Original Posted By: Michael Brusilow
Subject: Pietenpol-List: Re: PROP SIZEHi Michael, good to see you on the list today. Let me know what Hegycharges you for the prop, I may need one eventually. I flew about 30minutes last night, had lots of fun. I flew in formation with Dr. Carper,who was flying his 1942 paint scheme Stearman.Take Care!Robert Hensarling GN-1 N83887>Thanks David for the input. The gear on the GN-1>is regular Piper Cub gear on 6:00 wheels. I know>I could probably go with a 72 but do you think a 74>would work too.>>I could get Ray Hegy in Marfa, Texas to build a wooden>72x40.......according to what you are saying that should be>better than what is on there now.>>Again thanks David for the help.>>Mike>GN-1>77MK>Dallas>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>and you should see an improvement in climb and cruise. If climb is your>>primary concern and your gear legs are long enough, try a 76X34 prop>>(seaplane prop for an airknocker). I would also recommend changing to a>>wood prop. The wood prop will save between 11 and 13 pounds on your>>empty weight. Weight decreases performance.>>>>Michael King wrote:>>>>> Say Gang,>>>>>> While we are on the subject of prop size, any>>> experience from those using an A-80?>>>>>> I have a 1940 A-80 and currently using a 69x39>>> metal prop. Would like better climb performance>>> on a hot Texas day with two people onboard.>>>>>> Thanks.....>>>>>> Mike King>>> GN-1>>> 77MK>>> Dallas>>>>>>>>-->>***>>>>David B.Schober, CPE>>Instructor, Aviation Maintenance>>Fairmont State College>>National Aerospace Education Center>>Rt. 3 Box 13>>Bridgeport, WV 26330-9503>>(304) 842-8300>>>>>>>>>________________________________________________________________________________
Pietenpol-List: PROP SIZE
>> Re: PROP SIZE
Original Posted By: John Greenlee
Subject: Pietenpol-List: Re: PROP SIZE>Robert,>>Good to see you had fun last night....I'm on my>to the airport this afternoon to take her up.>>The last time I talked to Hegy, the price was $500>which included shipping and a guarantee. Not>bad considering what the big boys get.>>Nice guy......loves to talk and is VERY informative.>>Will let you know tomorrow if I go up today. May>take the Cherokee up first for a little air work.>>Best regards,>>Mike>>>>>>-----Original Message----->>From: Michael King >>To: Pietenpol Discussion >>Date: Tuesday, May 25, 1999 3:56 PM>>Subject: Re: PROP SIZE>>>>Hi Michael, good to see you on the list today. Let me know what Hegy>>charges you for the prop, I may need one eventually. I flew about 30>>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>>who was flying his 1942 paint scheme Stearman.>>>>Take Care!>>Robert Hensarling GN-1 N83887>>>>>>>Thanks David for the input. The gear on the GN-1>>>is regular Piper Cub gear on 6:00 wheels. I know>>>I could probably go with a 72 but do you think a 74>>>would work too.>>>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>>72x40.......according to what you are saying that should be>>>better than what is on there now.>>>>>>Again thanks David for the help.>>>>>>Mike>>>GN-1>>>77MK>>>Dallas>>>>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>>and you should see an improvement in climb and cruise. If climb is your>>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>>empty weight. Weight decreases performance.>>>>>>>>Michael King wrote:>>>>>>>>> Say Gang,>>>>>>>>>> While we are on the subject of prop size, any>>>>> experience from those using an A-80?>>>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>>> metal prop. Would like better climb performance>>>>> on a hot Texas day with two people onboard.>>>>>>>>>> Thanks.....>>>>>>>>>> Mike King>>>>> GN-1>>>>> 77MK>>>>> Dallas>>>>>>>>>>>>>>>>-->>>>**>>***>>>>>>>>David B.Schober, CPE>>>>Instructor, Aviation Maintenance>>>>Fairmont State College>>>>National Aerospace Education Center>>>>Rt. 3 Box 13>>>>Bridgeport, WV 26330-9503>>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>________________________________________________________________________________
Subject: Pietenpol-List: Re: PROP SIZE>Robert,>>Good to see you had fun last night....I'm on my>to the airport this afternoon to take her up.>>The last time I talked to Hegy, the price was $500>which included shipping and a guarantee. Not>bad considering what the big boys get.>>Nice guy......loves to talk and is VERY informative.>>Will let you know tomorrow if I go up today. May>take the Cherokee up first for a little air work.>>Best regards,>>Mike>>>>>>-----Original Message----->>From: Michael King >>To: Pietenpol Discussion >>Date: Tuesday, May 25, 1999 3:56 PM>>Subject: Re: PROP SIZE>>>>Hi Michael, good to see you on the list today. Let me know what Hegy>>charges you for the prop, I may need one eventually. I flew about 30>>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>>who was flying his 1942 paint scheme Stearman.>>>>Take Care!>>Robert Hensarling GN-1 N83887>>>>>>>Thanks David for the input. The gear on the GN-1>>>is regular Piper Cub gear on 6:00 wheels. I know>>>I could probably go with a 72 but do you think a 74>>>would work too.>>>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>>72x40.......according to what you are saying that should be>>>better than what is on there now.>>>>>>Again thanks David for the help.>>>>>>Mike>>>GN-1>>>77MK>>>Dallas>>>>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>>and you should see an improvement in climb and cruise. If climb is your>>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>>empty weight. Weight decreases performance.>>>>>>>>Michael King wrote:>>>>>>>>> Say Gang,>>>>>>>>>> While we are on the subject of prop size, any>>>>> experience from those using an A-80?>>>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>>> metal prop. Would like better climb performance>>>>> on a hot Texas day with two people onboard.>>>>>>>>>> Thanks.....>>>>>>>>>> Mike King>>>>> GN-1>>>>> 77MK>>>>> Dallas>>>>>>>>>>>>>>>>-->>>>**>>***>>>>>>>>David B.Schober, CPE>>>>Instructor, Aviation Maintenance>>>>Fairmont State College>>>>National Aerospace Education Center>>>>Rt. 3 Box 13>>>>Bridgeport, WV 26330-9503>>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>________________________________________________________________________________
Pietenpol-List: PROP SIZE
Original Posted By: Michael D Cuy
Say Gang,While we are on the subject of prop size, any experience from those using an A-80?I have a 1940 A-80 and currently using a 69x39metal prop. Would like better climb performance on a hot Texas day with two people onboard.Thanks.....Mike KingGN-177MKDallas________________________________________________________________________________
Say Gang,While we are on the subject of prop size, any experience from those using an A-80?I have a 1940 A-80 and currently using a 69x39metal prop. Would like better climb performance on a hot Texas day with two people onboard.Thanks.....Mike KingGN-177MKDallas________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: "BELLISSIMO, DOMENIC"
Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 onand you should see an improvement in climb and cruise. If climb is yourprimary concern and your gear legs are long enough, try a 76X34 prop(seaplane prop for an airknocker). I would also recommend changing to awood prop. The wood prop will save between 11 and 13 pounds on yourempty weight. Weight decreases performance.Michael King wrote:> Say Gang,>> While we are on the subject of prop size, any> experience from those using an A-80?>> I have a 1940 A-80 and currently using a 69x39> metal prop. Would like better climb performance> on a hot Texas day with two people onboard.>> Thanks.....>> Mike King> GN-1> 77MK> Dallas--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education CenterRt. 3 Box 13Bridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 onand you should see an improvement in climb and cruise. If climb is yourprimary concern and your gear legs are long enough, try a 76X34 prop(seaplane prop for an airknocker). I would also recommend changing to awood prop. The wood prop will save between 11 and 13 pounds on yourempty weight. Weight decreases performance.Michael King wrote:> Say Gang,>> While we are on the subject of prop size, any> experience from those using an A-80?>> I have a 1940 A-80 and currently using a 69x39> metal prop. Would like better climb performance> on a hot Texas day with two people onboard.>> Thanks.....>> Mike King> GN-1> 77MK> Dallas--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education CenterRt. 3 Box 13Bridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: robert hensarling
Thanks David for the input. The gear on the GN-1is regular Piper Cub gear on 6:00 wheels. I knowI could probably go with a 72 but do you think a 74would work too. I could get Ray Hegy in Marfa, Texas to build a wooden72x40.......according to what you are saying that should be better than what is on there now.Again thanks David for the help.MikeGN-177MKDallas>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>and you should see an improvement in climb and cruise. If climb is your>primary concern and your gear legs are long enough, try a 76X34 prop>(seaplane prop for an airknocker). I would also recommend changing to a>wood prop. The wood prop will save between 11 and 13 pounds on your>empty weight. Weight decreases performance.>>Michael King wrote:>>> Say Gang,>>>> While we are on the subject of prop size, any>> experience from those using an A-80?>>>> I have a 1940 A-80 and currently using a 69x39>> metal prop. Would like better climb performance>> on a hot Texas day with two people onboard.>>>> Thanks.....>>>> Mike King>> GN-1>> 77MK>> Dallas>>>-->>>David B.Schober, CPE>Instructor, Aviation Maintenance>Fairmont State College>National Aerospace Education Center>Rt. 3 Box 13>Bridgeport, WV 26330-9503>(304) 842-8300>>________________________________________________________________________________
Thanks David for the input. The gear on the GN-1is regular Piper Cub gear on 6:00 wheels. I knowI could probably go with a 72 but do you think a 74would work too. I could get Ray Hegy in Marfa, Texas to build a wooden72x40.......according to what you are saying that should be better than what is on there now.Again thanks David for the help.MikeGN-177MKDallas>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>and you should see an improvement in climb and cruise. If climb is your>primary concern and your gear legs are long enough, try a 76X34 prop>(seaplane prop for an airknocker). I would also recommend changing to a>wood prop. The wood prop will save between 11 and 13 pounds on your>empty weight. Weight decreases performance.>>Michael King wrote:>>> Say Gang,>>>> While we are on the subject of prop size, any>> experience from those using an A-80?>>>> I have a 1940 A-80 and currently using a 69x39>> metal prop. Would like better climb performance>> on a hot Texas day with two people onboard.>>>> Thanks.....>>>> Mike King>> GN-1>> 77MK>> Dallas>>>-->>>David B.Schober, CPE>Instructor, Aviation Maintenance>Fairmont State College>National Aerospace Education Center>Rt. 3 Box 13>Bridgeport, WV 26330-9503>(304) 842-8300>>________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: Michael King
-----Original Message-----
-----Original Message-----
> Re: PROP SIZE
Original Posted By: bowdler(at)juno.com
Robert,Good to see you had fun last night....I'm on myto the airport this afternoon to take her up.The last time I talked to Hegy, the price was $500which included shipping and a guarantee. Not bad considering what the big boys get.Nice guy......loves to talk and is VERY informative.Will let you know tomorrow if I go up today. Maytake the Cherokee up first for a little air work.Best regards,Mike>>-----Original Message----->From: Michael King >To: Pietenpol Discussion >Date: Tuesday, May 25, 1999 3:56 PM>Subject: Re: PROP SIZE>>Hi Michael, good to see you on the list today. Let me know what Hegy>charges you for the prop, I may need one eventually. I flew about 30>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>who was flying his 1942 paint scheme Stearman.>>Take Care!>Robert Hensarling GN-1 N83887>>>>Thanks David for the input. The gear on the GN-1>>is regular Piper Cub gear on 6:00 wheels. I know>>I could probably go with a 72 but do you think a 74>>would work too.>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>72x40.......according to what you are saying that should be>>better than what is on there now.>>>>Again thanks David for the help.>>>>Mike>>GN-1>>77MK>>Dallas>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>and you should see an improvement in climb and cruise. If climb is your>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>empty weight. Weight decreases performance.>>>>>>Michael King wrote:>>>>>>> Say Gang,>>>>>>>> While we are on the subject of prop size, any>>>> experience from those using an A-80?>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>> metal prop. Would like better climb performance>>>> on a hot Texas day with two people onboard.>>>>>>>> Thanks.....>>>>>>>> Mike King>>>> GN-1>>>> 77MK>>>> Dallas>>>>>>>>>>>>-->>>>***>>>>>>David B.Schober, CPE>>>Instructor, Aviation Maintenance>>>Fairmont State College>>>National Aerospace Education Center>>>Rt. 3 Box 13>>>Bridgeport, WV 26330-9503>>>(304) 842-8300>>>>>>>>>>>>>>>________________________________________________________________________________
Robert,Good to see you had fun last night....I'm on myto the airport this afternoon to take her up.The last time I talked to Hegy, the price was $500which included shipping and a guarantee. Not bad considering what the big boys get.Nice guy......loves to talk and is VERY informative.Will let you know tomorrow if I go up today. Maytake the Cherokee up first for a little air work.Best regards,Mike>>-----Original Message----->From: Michael King >To: Pietenpol Discussion >Date: Tuesday, May 25, 1999 3:56 PM>Subject: Re: PROP SIZE>>Hi Michael, good to see you on the list today. Let me know what Hegy>charges you for the prop, I may need one eventually. I flew about 30>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>who was flying his 1942 paint scheme Stearman.>>Take Care!>Robert Hensarling GN-1 N83887>>>>Thanks David for the input. The gear on the GN-1>>is regular Piper Cub gear on 6:00 wheels. I know>>I could probably go with a 72 but do you think a 74>>would work too.>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>72x40.......according to what you are saying that should be>>better than what is on there now.>>>>Again thanks David for the help.>>>>Mike>>GN-1>>77MK>>Dallas>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>and you should see an improvement in climb and cruise. If climb is your>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>empty weight. Weight decreases performance.>>>>>>Michael King wrote:>>>>>>> Say Gang,>>>>>>>> While we are on the subject of prop size, any>>>> experience from those using an A-80?>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>> metal prop. Would like better climb performance>>>> on a hot Texas day with two people onboard.>>>>>>>> Thanks.....>>>>>>>> Mike King>>>> GN-1>>>> 77MK>>>> Dallas>>>>>>>>>>>>-->>>>***>>>>>>David B.Schober, CPE>>>Instructor, Aviation Maintenance>>>Fairmont State College>>>National Aerospace Education Center>>>Rt. 3 Box 13>>>Bridgeport, WV 26330-9503>>>(304) 842-8300>>>>>>>>>>>>>>>________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By:>> Michael King
Subject: Pietenpol-List: Re: PROP SIZE>ia Mercury MTS v1.44 (NDS)) (via Mercury MTS v1.44 (NDS)) (via Mercury MTSv1.44 (NDS))>Message-ID: >>John Greenlee wrote:>>>> If y'all built airplanes, you should consider carving your own props.They>> are not difficult -- just time consuming.>>>> John>>>> -----Original Message-----
Subject: Pietenpol-List: Re: PROP SIZE>ia Mercury MTS v1.44 (NDS)) (via Mercury MTS v1.44 (NDS)) (via Mercury MTSv1.44 (NDS))>Message-ID: >>John Greenlee wrote:>>>> If y'all built airplanes, you should consider carving your own props.They>> are not difficult -- just time consuming.>>>> John>>>> -----Original Message-----
Pietenpol-List: Re: PROP SIZE
Original Posted By: John Greenlee
If possible, before you spend your money, see if anyone around the airport withaChamp, Cub, T'craft, Stinson 10A or 105 or any other airplane with a 65-90 hpCont. will let you borrow their prop or has a spare in the hangar that you canborrow for performance testing. I have a Sensenich72CK44 here in my office andaMcCauley metal prop in the hanger that I think is a 42" pitch. If you were in thearea I'd let you try them out. It's amazing what some people have laying around.Afriend borrowed the McCauley a few months back for his Champ. Just wanted to seethe difference between a cruise and climb prop. As I said, dig around before youspend your money.Michael King wrote:> Thanks David for the input. The gear on the GN-1> is regular Piper Cub gear on 6:00 wheels. I know> I could probably go with a 72 but do you think a 74> would work too.>> I could get Ray Hegy in Marfa, Texas to build a wooden> 72x40.......according to what you are saying that should be> better than what is on there now.>> Again thanks David for the help.>> Mike> GN-1> 77MK> Dallas>> >Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on> >and you should see an improvement in climb and cruise. If climb is your> >primary concern and your gear legs are long enough, try a 76X34 prop> >(seaplane prop for an airknocker). I would also recommend changing to a> >wood prop. The wood prop will save between 11 and 13 pounds on your> >empty weight. Weight decreases performance.> >> >Michael King wrote:> >> >> Say Gang,> >>> >> While we are on the subject of prop size, any> >> experience from those using an A-80?> >>> >> I have a 1940 A-80 and currently using a 69x39> >> metal prop. Would like better climb performance> >> on a hot Texas day with two people onboard.> >>> >> Thanks.....> >>> >> Mike King> >> GN-1> >> 77MK> >> Dallas> >> >> >> >--> >> >> >David B.Schober, CPE> >Instructor, Aviation Maintenance> >Fairmont State College> >National Aerospace Education Center> >Rt. 3 Box 13> >Bridgeport, WV 26330-9503> >(304) 842-8300> >> >> >> >--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education CenterRt. 3 Box 13Bridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
If possible, before you spend your money, see if anyone around the airport withaChamp, Cub, T'craft, Stinson 10A or 105 or any other airplane with a 65-90 hpCont. will let you borrow their prop or has a spare in the hangar that you canborrow for performance testing. I have a Sensenich72CK44 here in my office andaMcCauley metal prop in the hanger that I think is a 42" pitch. If you were in thearea I'd let you try them out. It's amazing what some people have laying around.Afriend borrowed the McCauley a few months back for his Champ. Just wanted to seethe difference between a cruise and climb prop. As I said, dig around before youspend your money.Michael King wrote:> Thanks David for the input. The gear on the GN-1> is regular Piper Cub gear on 6:00 wheels. I know> I could probably go with a 72 but do you think a 74> would work too.>> I could get Ray Hegy in Marfa, Texas to build a wooden> 72x40.......according to what you are saying that should be> better than what is on there now.>> Again thanks David for the help.>> Mike> GN-1> 77MK> Dallas>> >Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on> >and you should see an improvement in climb and cruise. If climb is your> >primary concern and your gear legs are long enough, try a 76X34 prop> >(seaplane prop for an airknocker). I would also recommend changing to a> >wood prop. The wood prop will save between 11 and 13 pounds on your> >empty weight. Weight decreases performance.> >> >Michael King wrote:> >> >> Say Gang,> >>> >> While we are on the subject of prop size, any> >> experience from those using an A-80?> >>> >> I have a 1940 A-80 and currently using a 69x39> >> metal prop. Would like better climb performance> >> on a hot Texas day with two people onboard.> >>> >> Thanks.....> >>> >> Mike King> >> GN-1> >> 77MK> >> Dallas> >> >> >> >--> >> >> >David B.Schober, CPE> >Instructor, Aviation Maintenance> >Fairmont State College> >National Aerospace Education Center> >Rt. 3 Box 13> >Bridgeport, WV 26330-9503> >(304) 842-8300> >> >> >> >--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education CenterRt. 3 Box 13Bridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: Michael King
If y'all built airplanes, you should consider carving your own props. Theyare not difficult -- just time consuming.John-----Original Message-----
If y'all built airplanes, you should consider carving your own props. Theyare not difficult -- just time consuming.John-----Original Message-----
>>> Re: PROP SIZE
Original Posted By: Richard DeCosta
I have never thought about it before. Between my brotherwho has a 1939 Taylorcraft and my GN-1, there may somethought to doing just that. Robert in Uvalde, who is one ofthe best skilled custom wood furniture builder might be interested too. Between the three of us, we could get somegood use from making our own props for various configurations...cruise and speed applications.Is there a wooden prop machine available?Thanks......Mike>If y'all built airplanes, you should consider carving your own props. They>are not difficult -- just time consuming.>>John>>-----Original Message----->From: Michael King >To: Pietenpol Discussion >Date: Tuesday, May 25, 1999 3:57 PM>Subject: Re: PROP SIZE>>>>Robert,>>>>Good to see you had fun last night....I'm on my>>to the airport this afternoon to take her up.>>>>The last time I talked to Hegy, the price was $500>>which included shipping and a guarantee. Not>>bad considering what the big boys get.>>>>Nice guy......loves to talk and is VERY informative.>>>>Will let you know tomorrow if I go up today. May>>take the Cherokee up first for a little air work.>>>>Best regards,>>>>Mike>>>>>>>>>>>>>>>>-----Original Message----->>>From: Michael King >>>To: Pietenpol Discussion >>>Date: Tuesday, May 25, 1999 3:56 PM>>>Subject: Re: PROP SIZE>>>>>>Hi Michael, good to see you on the list today. Let me know what Hegy>>>charges you for the prop, I may need one eventually. I flew about 30>>>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>>>who was flying his 1942 paint scheme Stearman.>>>>>>Take Care!>>>Robert Hensarling GN-1 N83887>>>>>>>>>>Thanks David for the input. The gear on the GN-1>>>>is regular Piper Cub gear on 6:00 wheels. I know>>>>I could probably go with a 72 but do you think a 74>>>>would work too.>>>>>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>>>72x40.......according to what you are saying that should be>>>>better than what is on there now.>>>>>>>>Again thanks David for the help.>>>>>>>>Mike>>>>GN-1>>>>77MK>>>>Dallas>>>>>>>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>>>and you should see an improvement in climb and cruise. If climb is your>>>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>>>empty weight. Weight decreases performance.>>>>>>>>>>Michael King wrote:>>>>>>>>>>> Say Gang,>>>>>>>>>>>> While we are on the subject of prop size, any>>>>>> experience from those using an A-80?>>>>>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>>>> metal prop. Would like better climb performance>>>>>> on a hot Texas day with two people onboard.>>>>>>>>>>>> Thanks.....>>>>>>>>>>>> Mike King>>>>>> GN-1>>>>>> 77MK>>>>>> Dallas>>>>>>>>>>>>>>>>>>>>-->>>>>>**>>>***>>>>>>>>>>David B.Schober, CPE>>>>>Instructor, Aviation Maintenance>>>>>Fairmont State College>>>>>National Aerospace Education Center>>>>>Rt. 3 Box 13>>>>>Bridgeport, WV 26330-9503>>>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>________________________________________________________________________________
I have never thought about it before. Between my brotherwho has a 1939 Taylorcraft and my GN-1, there may somethought to doing just that. Robert in Uvalde, who is one ofthe best skilled custom wood furniture builder might be interested too. Between the three of us, we could get somegood use from making our own props for various configurations...cruise and speed applications.Is there a wooden prop machine available?Thanks......Mike>If y'all built airplanes, you should consider carving your own props. They>are not difficult -- just time consuming.>>John>>-----Original Message----->From: Michael King >To: Pietenpol Discussion >Date: Tuesday, May 25, 1999 3:57 PM>Subject: Re: PROP SIZE>>>>Robert,>>>>Good to see you had fun last night....I'm on my>>to the airport this afternoon to take her up.>>>>The last time I talked to Hegy, the price was $500>>which included shipping and a guarantee. Not>>bad considering what the big boys get.>>>>Nice guy......loves to talk and is VERY informative.>>>>Will let you know tomorrow if I go up today. May>>take the Cherokee up first for a little air work.>>>>Best regards,>>>>Mike>>>>>>>>>>>>>>>>-----Original Message----->>>From: Michael King >>>To: Pietenpol Discussion >>>Date: Tuesday, May 25, 1999 3:56 PM>>>Subject: Re: PROP SIZE>>>>>>Hi Michael, good to see you on the list today. Let me know what Hegy>>>charges you for the prop, I may need one eventually. I flew about 30>>>minutes last night, had lots of fun. I flew in formation with Dr. Carper,>>>who was flying his 1942 paint scheme Stearman.>>>>>>Take Care!>>>Robert Hensarling GN-1 N83887>>>>>>>>>>Thanks David for the input. The gear on the GN-1>>>>is regular Piper Cub gear on 6:00 wheels. I know>>>>I could probably go with a 72 but do you think a 74>>>>would work too.>>>>>>>>I could get Ray Hegy in Marfa, Texas to build a wooden>>>>72x40.......according to what you are saying that should be>>>>better than what is on there now.>>>>>>>>Again thanks David for the help.>>>>>>>>Mike>>>>GN-1>>>>77MK>>>>Dallas>>>>>>>>>>>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42 on>>>>>and you should see an improvement in climb and cruise. If climb is your>>>>>primary concern and your gear legs are long enough, try a 76X34 prop>>>>>(seaplane prop for an airknocker). I would also recommend changing to a>>>>>wood prop. The wood prop will save between 11 and 13 pounds on your>>>>>empty weight. Weight decreases performance.>>>>>>>>>>Michael King wrote:>>>>>>>>>>> Say Gang,>>>>>>>>>>>> While we are on the subject of prop size, any>>>>>> experience from those using an A-80?>>>>>>>>>>>> I have a 1940 A-80 and currently using a 69x39>>>>>> metal prop. Would like better climb performance>>>>>> on a hot Texas day with two people onboard.>>>>>>>>>>>> Thanks.....>>>>>>>>>>>> Mike King>>>>>> GN-1>>>>>> 77MK>>>>>> Dallas>>>>>>>>>>>>>>>>>>>>-->>>>>>**>>>***>>>>>>>>>>David B.Schober, CPE>>>>>Instructor, Aviation Maintenance>>>>>Fairmont State College>>>>>National Aerospace Education Center>>>>>Rt. 3 Box 13>>>>>Bridgeport, WV 26330-9503>>>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: Richard DeCosta
I am now on my 4th prop and can do all of the carving in one 8 hour day, the layout takes alot longer but I guess that that is the way it usually goes. My last prop with the Suburu was 76X50 and still let the engine run a little fast so I am carving a real wide blade 76X52. I should have it on the plane next week so I will let you know how it goes.Duane NX6398________________________________________________________________________________
I am now on my 4th prop and can do all of the carving in one 8 hour day, the layout takes alot longer but I guess that that is the way it usually goes. My last prop with the Suburu was 76X50 and still let the engine run a little fast so I am carving a real wide blade 76X52. I should have it on the plane next week so I will let you know how it goes.Duane NX6398________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: Dlwoolsey(at)aol.com
Anyone have any pics of the carving process? I'm putting a new page upon AirCamper.org for prop carving.--- Dlwoolsey(at)aol.com wrote:> I am now on my 4th prop and can do all of the carving in one 8 hour> day, the > layout takes alot longer but I guess that that is the way it usually> goes. > My last prop with the Suburu was 76X50 and still let the engine run a> little > fast so I am carving a real wide blade 76X52. I should have it on> the plane > next week so I will let you know how it goes.> > Duane NX6398> ==="Lady, you want me to answer you if this old airplane is safe to fly? Just howin the world do you think it got to be this old?" - Jim Tavenner---------------------------------------------------------Visit www.AirCamper.org - A Low 'n Slow Online Community!---------------------------------------------------------My homepage: http://www.AirCamper.org/w3builder_____ ... __________
Anyone have any pics of the carving process? I'm putting a new page upon AirCamper.org for prop carving.--- Dlwoolsey(at)aol.com wrote:> I am now on my 4th prop and can do all of the carving in one 8 hour> day, the > layout takes alot longer but I guess that that is the way it usually> goes. > My last prop with the Suburu was 76X50 and still let the engine run a> little > fast so I am carving a real wide blade 76X52. I should have it on> the plane > next week so I will let you know how it goes.> > Duane NX6398> ==="Lady, you want me to answer you if this old airplane is safe to fly? Just howin the world do you think it got to be this old?" - Jim Tavenner---------------------------------------------------------Visit www.AirCamper.org - A Low 'n Slow Online Community!---------------------------------------------------------My homepage: http://www.AirCamper.org/w3builder_____ ... __________
Pietenpol-List: Re: PROP SIZE
Original Posted By: dannymac
Ok, here goes.Grant Maclaren did I nice write up on watching Howard Henderson carve a propfor 444MH. It is really detailed and a lot of help.My first attempt was a good lesson in how not to do it, or how to make awall hanger. I tried to use the duplicator to get too close a finishedproduct. My second attempt is much better. I left about a 1/4" on eachside to finish by hand. Get a sure-form rasp. Removes alot of material ifa lot of sweat is applied.If I do another one, I might do the whole thing by hand. Can't be that muchmore work.If you use the duplicator try this trick I saw in a photograph somewhere.Lengthen the center laminations 1 to 1 1/2". Drill them near the end on thecenter line and bolt the tip securely to the table with appropriate spacers.The sucker can't attempt to 'pivot' on you then. When finishing the tips,you can just cut the excess off.John-----Original Message-----
Ok, here goes.Grant Maclaren did I nice write up on watching Howard Henderson carve a propfor 444MH. It is really detailed and a lot of help.My first attempt was a good lesson in how not to do it, or how to make awall hanger. I tried to use the duplicator to get too close a finishedproduct. My second attempt is much better. I left about a 1/4" on eachside to finish by hand. Get a sure-form rasp. Removes alot of material ifa lot of sweat is applied.If I do another one, I might do the whole thing by hand. Can't be that muchmore work.If you use the duplicator try this trick I saw in a photograph somewhere.Lengthen the center laminations 1 to 1 1/2". Drill them near the end on thecenter line and bolt the tip securely to the table with appropriate spacers.The sucker can't attempt to 'pivot' on you then. When finishing the tips,you can just cut the excess off.John-----Original Message-----
>> >> Re: PROP SIZE
Original Posted By: John Greenlee
>> Subject: Re: PROP SIZE>>>> >Robert,>> >>> >Good to see you had fun last night....I'm on my>> >to the airport this afternoon to take her up.>> >>> >The last time I talked to Hegy, the price was $500>> >which included shipping and a guarantee. Not>> >bad considering what the big boys get.>> >>> >Nice guy......loves to talk and is VERY informative.>> >>> >Will let you know tomorrow if I go up today. May>> >take the Cherokee up first for a little air work.>> >>> >Best regards,>> >>> >Mike>> >>> >>> >>> >>> >>> >>>> >>-----Original Message----->> >>From: Michael King >> >>To: Pietenpol Discussion >> >>Date: Tuesday, May 25, 1999 3:56 PM>> >>Subject: Re: PROP SIZE>> >>>> >>Hi Michael, good to see you on the list today. Let me know what Hegy>> >>charges you for the prop, I may need one eventually. I flew about 30>> >>minutes last night, had lots of fun. I flew in formation with Dr.Carper,>> >>who was flying his 1942 paint scheme Stearman.>> >>>> >>Take Care!>> >>Robert Hensarling GN-1 N83887>> >>>> >>>> >>>Thanks David for the input. The gear on the GN-1>> >>>is regular Piper Cub gear on 6:00 wheels. I know>> >>>I could probably go with a 72 but do you think a 74>> >>>would work too.>> >>>>> >>>I could get Ray Hegy in Marfa, Texas to build a wooden>> >>>72x40.......according to what you are saying that should be>> >>>better than what is on there now.>> >>>>> >>>Again thanks David for the help.>> >>>>> >>>Mike>> >>>GN-1>> >>>77MK>> >>>Dallas>> >>>>> >>>>> >>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42on>> >>>>and you should see an improvement in climb and cruise. If climb isyour>> >>>>primary concern and your gear legs are long enough, try a 76X34 prop>> >>>>(seaplane prop for an airknocker). I would also recommend changing toa>> >>>>wood prop. The wood prop will save between 11 and 13 pounds on your>> >>>>empty weight. Weight decreases performance.>> >>>>>> >>>>Michael King wrote:>> >>>>>> >>>>> Say Gang,>> >>>>>>> >>>>> While we are on the subject of prop size, any>> >>>>> experience from those using an A-80?>> >>>>>>> >>>>> I have a 1940 A-80 and currently using a 69x39>> >>>>> metal prop. Would like better climb performance>> >>>>> on a hot Texas day with two people onboard.>> >>>>>>> >>>>> Thanks.....>> >>>>>>> >>>>> Mike King>> >>>>> GN-1>> >>>>> 77MK>> >>>>> Dallas>> >>>>>> >>>>>> >>>>>> >>>>-->> >>>>>>>> **>> >>***>> >>>>>> >>>>David B.Schober, CPE>> >>>>Instructor, Aviation Maintenance>> >>>>Fairmont State College>> >>>>National Aerospace Education Center>> >>>>Rt. 3 Box 13>> >>>>Bridgeport, WV 26330-9503>> >>>>(304) 842-8300>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>> >>Ok John,>>How can I learn how to carve one? How many more power tools will I have>to buy? How MUCH time are you talking about. I need to start thinking>about this now.>________________________________________________________________________________
>> Subject: Re: PROP SIZE>>>> >Robert,>> >>> >Good to see you had fun last night....I'm on my>> >to the airport this afternoon to take her up.>> >>> >The last time I talked to Hegy, the price was $500>> >which included shipping and a guarantee. Not>> >bad considering what the big boys get.>> >>> >Nice guy......loves to talk and is VERY informative.>> >>> >Will let you know tomorrow if I go up today. May>> >take the Cherokee up first for a little air work.>> >>> >Best regards,>> >>> >Mike>> >>> >>> >>> >>> >>> >>>> >>-----Original Message----->> >>From: Michael King >> >>To: Pietenpol Discussion >> >>Date: Tuesday, May 25, 1999 3:56 PM>> >>Subject: Re: PROP SIZE>> >>>> >>Hi Michael, good to see you on the list today. Let me know what Hegy>> >>charges you for the prop, I may need one eventually. I flew about 30>> >>minutes last night, had lots of fun. I flew in formation with Dr.Carper,>> >>who was flying his 1942 paint scheme Stearman.>> >>>> >>Take Care!>> >>Robert Hensarling GN-1 N83887>> >>>> >>>> >>>Thanks David for the input. The gear on the GN-1>> >>>is regular Piper Cub gear on 6:00 wheels. I know>> >>>I could probably go with a 72 but do you think a 74>> >>>would work too.>> >>>>> >>>I could get Ray Hegy in Marfa, Texas to build a wooden>> >>>72x40.......according to what you are saying that should be>> >>>better than what is on there now.>> >>>>> >>>Again thanks David for the help.>> >>>>> >>>Mike>> >>>GN-1>> >>>77MK>> >>>Dallas>> >>>>> >>>>> >>>>Your 69X39 prop is way to short to be efficient. Put a 74X40 or 74X42on>> >>>>and you should see an improvement in climb and cruise. If climb isyour>> >>>>primary concern and your gear legs are long enough, try a 76X34 prop>> >>>>(seaplane prop for an airknocker). I would also recommend changing toa>> >>>>wood prop. The wood prop will save between 11 and 13 pounds on your>> >>>>empty weight. Weight decreases performance.>> >>>>>> >>>>Michael King wrote:>> >>>>>> >>>>> Say Gang,>> >>>>>>> >>>>> While we are on the subject of prop size, any>> >>>>> experience from those using an A-80?>> >>>>>>> >>>>> I have a 1940 A-80 and currently using a 69x39>> >>>>> metal prop. Would like better climb performance>> >>>>> on a hot Texas day with two people onboard.>> >>>>>>> >>>>> Thanks.....>> >>>>>>> >>>>> Mike King>> >>>>> GN-1>> >>>>> 77MK>> >>>>> Dallas>> >>>>>> >>>>>> >>>>>> >>>>-->> >>>>>>>> **>> >>***>> >>>>>> >>>>David B.Schober, CPE>> >>>>Instructor, Aviation Maintenance>> >>>>Fairmont State College>> >>>>National Aerospace Education Center>> >>>>Rt. 3 Box 13>> >>>>Bridgeport, WV 26330-9503>> >>>>(304) 842-8300>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>> >>Ok John,>>How can I learn how to carve one? How many more power tools will I have>to buy? How MUCH time are you talking about. I need to start thinking>about this now.>________________________________________________________________________________
Pietenpol-List: Re: PROP SIZE
Original Posted By: robert hensarling
Anyone have any pics of the carving process? I'm putting a new page upon AirCamper.org for prop carving.________________________________________________________________________________
Anyone have any pics of the carving process? I'm putting a new page upon AirCamper.org for prop carving.________________________________________________________________________________