Original Posted By: Mark Roberts
Congrats and also a nice looking airplane! Many happy returns.JoeRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 18 Jun 2012 12:37:55 -0700Subject: Pietenpol-List: What welding rod did you use for 4130?
Pietenpol-List: What welding rod did you use for 4130?
Pietenpol-List: What welding rod did you use for 4130?
Original Posted By: John Franklin
Subject: Pietenpol-List: What welding rod did you use for 4130?________________________________________________________________________________Date: Mon, 18 Jun 2012 15:21:24 -0500 (GMT-05:00)
Subject: Pietenpol-List: What welding rod did you use for 4130?________________________________________________________________________________Date: Mon, 18 Jun 2012 15:21:24 -0500 (GMT-05:00)
Re: Pietenpol-List: What welding rod did you use for 4130?
Original Posted By: mike Hardaway
Did they mention vacuum bagging? What the heck is the world coming to?--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 18 Jun 2012 13:14:00 -0700Subject: Re: Pietenpol-List: What welding rod did you use for 4130?
Did they mention vacuum bagging? What the heck is the world coming to?--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 18 Jun 2012 13:14:00 -0700Subject: Re: Pietenpol-List: What welding rod did you use for 4130?
Re: Pietenpol-List: What welding rod did you use for 4130?
Original Posted By: Mark Roberts
Subject: Re: Pietenpol-List: What welding rod did you use for 4130?I was trained to use my oxy torch by some Canadian Recreational Aircraft Associationfolks who recommended mild steel welding rod for filler rod with 4130. My entire control system was welded with mild steel rod from Princess Auto (yourHarbour Frieght I would guess). Scott Knowlton Burlington ON -----Original Message-----
Subject: Re: Pietenpol-List: What welding rod did you use for 4130?I was trained to use my oxy torch by some Canadian Recreational Aircraft Associationfolks who recommended mild steel welding rod for filler rod with 4130. My entire control system was welded with mild steel rod from Princess Auto (yourHarbour Frieght I would guess). Scott Knowlton Burlington ON -----Original Message-----
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "Gary Boothe"
Funny that Jeff should mention that... I was just looking for that video. http://www.eaavideo.org/video.aspx?v=15 ... ------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Funny that Jeff should mention that... I was just looking for that video. http://www.eaavideo.org/video.aspx?v=15 ... ------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
RE: Pietenpol-List: What welding rod did you use for 4130?
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Mark,Thanks for the welcomed distraction from work! Gave me a chance to thumbthru ALL those receipts..but, anything for you, buddy!I am looking at a receipt from 2006, from a local welding supply, for 10 lbsof 3/32" 4130 welding rod.$8.832/lb!!! Curious, I just called them and wasquoted $20.52/lb. I originally bought 10lbs, and have wood gear, and I thinkI may have used about 3lbs.Gary BootheNX308MB
Mark,Thanks for the welcomed distraction from work! Gave me a chance to thumbthru ALL those receipts..but, anything for you, buddy!I am looking at a receipt from 2006, from a local welding supply, for 10 lbsof 3/32" 4130 welding rod.$8.832/lb!!! Curious, I just called them and wasquoted $20.52/lb. I originally bought 10lbs, and have wood gear, and I thinkI may have used about 3lbs.Gary BootheNX308MB
RE: Pietenpol-List: What welding rod did you use for 4130?
Original Posted By: owner-pietenpol-list-server(at)matronics.com
what model welder and type?Barry _____
what model welder and type?Barry _____
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "John Francis"
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________________________________________________________________________________Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
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________________________________________________________________________________Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: airlion
Miller recommendsFiller Material ER70S-2 or ER80S-D2.3 lbs. $27.70. Free frightCyberweld--------John FrancisRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 18 Jun 2012 16:26:32 -0700 (PDT)
Miller recommendsFiller Material ER70S-2 or ER80S-D2.3 lbs. $27.70. Free frightCyberweld--------John FrancisRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 18 Jun 2012 16:26:32 -0700 (PDT)
Re: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: Mark Roberts
Mark,Actually I found TIG to be much easier. The hand coordination is very similar to gas welding. The advantage is no pre-heating needed, it is quicker, and I believe easier to control the heat. Very clean- no soot/sparks etc. Also I can do some aluminum welding with TIG whereas as hard as I tried, I could never gas weld aluminum. The disadvantage is the cost of the equipment. After you start TIG you would never go back to gas.Dan HelsperPuryear, TN-----Original Message-----
Mark,Actually I found TIG to be much easier. The hand coordination is very similar to gas welding. The advantage is no pre-heating needed, it is quicker, and I believe easier to control the heat. Very clean- no soot/sparks etc. Also I can do some aluminum welding with TIG whereas as hard as I tried, I could never gas weld aluminum. The disadvantage is the cost of the equipment. After you start TIG you would never go back to gas.Dan HelsperPuryear, TN-----Original Message-----
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "K5YAC"
I picked up some old Gerdes A-049 brake master cylinders that are of the toe braketype that need to sit fairly close to vertical. I am thinking of using these,but as a heel brake with the cylinders mounted upright under the front seat.I am just starting mock-up the geometry of the brake pedal and there area few complicating factors that I am trying to work through.Has anyone tried this set-up? An archive search did not turn anything up.Thanks,--------David GallagherZodiac 601 XL-B: flying, 200+ hours nowNext project under construction: AircamperRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
I picked up some old Gerdes A-049 brake master cylinders that are of the toe braketype that need to sit fairly close to vertical. I am thinking of using these,but as a heel brake with the cylinders mounted upright under the front seat.I am just starting mock-up the geometry of the brake pedal and there area few complicating factors that I am trying to work through.Has anyone tried this set-up? An archive search did not turn anything up.Thanks,--------David GallagherZodiac 601 XL-B: flying, 200+ hours nowNext project under construction: AircamperRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Re: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: helspersew(at)aol.com
The only other difficulty with TIG (so I've heard and read) is the fact that you'llneed to normalize after welding. I'm not saying that TIG is the wrong wayto go... heck, I'd like to try it sometime... but the heat effected zone isso small compared to gas that much of the stress is concentrated in a small area,requiring heat treating or normalizing to reduce or disburse the potentialfor damage or failure. This could be as simple as breaking out the ol rosebudand heating the cluster or part to a dark cherry red and letting it air cool...but none the less, you are right back to your ol buddy, the oxy/acetylenetorch. Not an expert, just relaying what I've been told.--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: What welding rod did you use for 4130?
The only other difficulty with TIG (so I've heard and read) is the fact that you'llneed to normalize after welding. I'm not saying that TIG is the wrong wayto go... heck, I'd like to try it sometime... but the heat effected zone isso small compared to gas that much of the stress is concentrated in a small area,requiring heat treating or normalizing to reduce or disburse the potentialfor damage or failure. This could be as simple as breaking out the ol rosebudand heating the cluster or part to a dark cherry red and letting it air cool...but none the less, you are right back to your ol buddy, the oxy/acetylenetorch. Not an expert, just relaying what I've been told.--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: K5YAC
Mark,I took one of those SportAir workshops (TIG welding) sponsored by EAA. According to the instructor (he was from Lincoln Welders) and all the written info that they provided, normalizing is not needed on the thinner metals such as we use on aircraft. I would highly recommend attendance at any of the Sportair workshops. Went to the fabric covering one also.BTW I met Gary Bell there for the first time. Dan HelsperPuryear, TN-----Original Message-----
Mark,I took one of those SportAir workshops (TIG welding) sponsored by EAA. According to the instructor (he was from Lincoln Welders) and all the written info that they provided, normalizing is not needed on the thinner metals such as we use on aircraft. I would highly recommend attendance at any of the Sportair workshops. Went to the fabric covering one also.BTW I met Gary Bell there for the first time. Dan HelsperPuryear, TN-----Original Message-----
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "tools"
I wish that was my hanger. We can all dream. That one is in San Diego at SEE.Went to an antique show there a few years ago. Just think how good we will look in a tight / loose formation at mach 0.00001 and500 AGL. Just thinking about it lowers my blood pressure. What a great feeling.--------Scott LiefeldFlying N11MS since March 1972Steel TubeC-85-12Wire WheelsBrodhead in 1996Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
I wish that was my hanger. We can all dream. That one is in San Diego at SEE.Went to an antique show there a few years ago. Just think how good we will look in a tight / loose formation at mach 0.00001 and500 AGL. Just thinking about it lowers my blood pressure. What a great feeling.--------Scott LiefeldFlying N11MS since March 1972Steel TubeC-85-12Wire WheelsBrodhead in 1996Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "Bill Church"
I work with the guys at EAA's Week's hangar where they do all sorts of weldingon their aircraft with TIG and don't normalize either.Furthermore, doing a LOT of reading on the matter, the process of normalizing israther complicated, requiring close temp control, times and cool down ratesfor it to be effective, none which can be done without rather weird equipmentand know how.Like usual, ask one question from three guys and get a dozen answers! It's thekind of thing that keeps me awake at nights...I'm finally firmly in the camp (mostly after having seen it in person a lot) thatTIG is fine, easier for me, no normalizing is required. With that said, do some reading on the subject of brazing 4130... You'll get twicethe number of theories still! Something like two dozen ideas from threeguys. Still, an oxy/acet rig is REALLY handy. If you can oxy/acet to aircraft standards,going TIG later is going to be a piece of cake. I agree the sportair workshopsare great. Dr. Joe (can't remember his last name) who does a lot of teachingof them is really a good instructor. I've sat through a lot of this lecturingduring Air Venture (Oshkosh). I also have sat through his gas weldingaluminum seminars, which are really really good. There's a short video of his on oxy/acet and 4130 on the EAA website (or there'sa link). It's short and really really really (that's THREE reallys) a goodplace to start. Explains a simple rule of thumb procedure (1/8", 45 degrees and90 degrees) for oxy/acet of 4130. This whole welding thing is very cumulative. It's a matter of burning some gas,rods and metal. Like lead poisoning, your brain just collects the info andone day it'll seem a lot easier than before, for no good reason.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
I work with the guys at EAA's Week's hangar where they do all sorts of weldingon their aircraft with TIG and don't normalize either.Furthermore, doing a LOT of reading on the matter, the process of normalizing israther complicated, requiring close temp control, times and cool down ratesfor it to be effective, none which can be done without rather weird equipmentand know how.Like usual, ask one question from three guys and get a dozen answers! It's thekind of thing that keeps me awake at nights...I'm finally firmly in the camp (mostly after having seen it in person a lot) thatTIG is fine, easier for me, no normalizing is required. With that said, do some reading on the subject of brazing 4130... You'll get twicethe number of theories still! Something like two dozen ideas from threeguys. Still, an oxy/acet rig is REALLY handy. If you can oxy/acet to aircraft standards,going TIG later is going to be a piece of cake. I agree the sportair workshopsare great. Dr. Joe (can't remember his last name) who does a lot of teachingof them is really a good instructor. I've sat through a lot of this lecturingduring Air Venture (Oshkosh). I also have sat through his gas weldingaluminum seminars, which are really really good. There's a short video of his on oxy/acet and 4130 on the EAA website (or there'sa link). It's short and really really really (that's THREE reallys) a goodplace to start. Explains a simple rule of thumb procedure (1/8", 45 degrees and90 degrees) for oxy/acet of 4130. This whole welding thing is very cumulative. It's a matter of burning some gas,rods and metal. Like lead poisoning, your brain just collects the info andone day it'll seem a lot easier than before, for no good reason.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Pietenpol-List: Re: String Theory (Crankcase)
Original Posted By: "Jerry Dotson"
The research that I've done on TIG welding 4130 indicates that post weld normalizingis only needed for metal thicknesses over 1/8". Therefore, for the metalparts on a Pietenpol, very few welds (if any) would require normalizing. Justbe sure to allow the welds to cool slowly, in still air.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: String Theory (Crankcase)
The research that I've done on TIG welding 4130 indicates that post weld normalizingis only needed for metal thicknesses over 1/8". Therefore, for the metalparts on a Pietenpol, very few welds (if any) would require normalizing. Justbe sure to allow the welds to cool slowly, in still air.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: String Theory (Crankcase)
Original Posted By: Jim Boyer
Michael I used LOCTITE-515 on my Lycoming. They came out with a service bulletinthat says you can use this as well as General Electric Companys RTV-102. I onlyhave 3 hours on my O-235 but so far it is dusty dry.--------Jerry Dotson59 Daniel Johnson RdBaker, FL 32531First flight June 16,2012Started building July, 200921" wheelsLycoming O-235 C2CJay Anderson CloudCars prop 76 X 44Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/lyco ... ______Date: Tue, 19 Jun 2012 20:13:15 +0000 (UTC)
Michael I used LOCTITE-515 on my Lycoming. They came out with a service bulletinthat says you can use this as well as General Electric Companys RTV-102. I onlyhave 3 hours on my O-235 but so far it is dusty dry.--------Jerry Dotson59 Daniel Johnson RdBaker, FL 32531First flight June 16,2012Started building July, 200921" wheelsLycoming O-235 C2CJay Anderson CloudCars prop 76 X 44Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/lyco ... ______Date: Tue, 19 Jun 2012 20:13:15 +0000 (UTC)
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "K5YAC"
Found this picture posted some time ago by Clif Dawson--------John FrancisRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/copy ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Found this picture posted some time ago by Clif Dawson--------John FrancisRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/copy ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "Jack Phillips"
I'll be darned! Thanks for the info gents!--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
I'll be darned! Thanks for the info gents!--------Mark ChouinardWings, Center Section and Empannage and Fuse framed up - Working on Landing GearRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
RE: Pietenpol-List: String Theory (Crankcase)
Original Posted By: owner-pietenpol-list-server(at)matronics.com
I used the string. No leaks after 7 years and 260 hours.Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
I used the string. No leaks after 7 years and 260 hours.Jack PhillipsNX899JPSmith Mountain Lake, Virginia _____
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "scudrun"
I have over (100) AN140-16S turnbuckles for sale. They are used and have (2) cableeyes. I used motorcycle chain sideplates/links to create a "fork" and usedthese throughout my Air Camper. $8ea plus $5 shipping via USPS Priority smallflat rate box. Please PM me with orders. Check, MO or PayPal all work fine.Thanx.......Mike--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/img_ ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
I have over (100) AN140-16S turnbuckles for sale. They are used and have (2) cableeyes. I used motorcycle chain sideplates/links to create a "fork" and usedthese throughout my Air Camper. $8ea plus $5 shipping via USPS Priority smallflat rate box. Please PM me with orders. Check, MO or PayPal all work fine.Thanx.......Mike--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/img_ ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: Michael Perez
I bought this TIG welder on E-Bay and it does everything as advertized and I thinkis a very good deal.http://www.ebay.ca/itm/ws/eBayISAPI.dll ... 41wt_952It was delivered in 3 days, and worked like a charm out of the box. I have donemostly stainless welding with it but did some aluminum for testing and it workedgreat with blunt zirconiated electrodes in AC pulsed mode. Nice cleaningaction. One other quick note which will be valuable for those welding thin materials. I learned to chemically sharpen my tungsten using sodium nitrite which is an inexpensivechemical salt available from chemical supplies (or you could buy aproduct called chemsharp which is the same thing sold in expensive jars!) Forthin metals in DC mode you can't beat the fine tip you get with this method andno arc wandering! Joetools wrote:> I'll second what Dan says about TIG. Also WAY easier for really thin metals,like a lot of the fittings on the Piet.> > Rigbt now, it seems there's lots of TIG welders being sold via ebay, craigslist,etc, for a really good deal. Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 20 Jun 2012 06:29:49 -0700 (PDT)
I bought this TIG welder on E-Bay and it does everything as advertized and I thinkis a very good deal.http://www.ebay.ca/itm/ws/eBayISAPI.dll ... 41wt_952It was delivered in 3 days, and worked like a charm out of the box. I have donemostly stainless welding with it but did some aluminum for testing and it workedgreat with blunt zirconiated electrodes in AC pulsed mode. Nice cleaningaction. One other quick note which will be valuable for those welding thin materials. I learned to chemically sharpen my tungsten using sodium nitrite which is an inexpensivechemical salt available from chemical supplies (or you could buy aproduct called chemsharp which is the same thing sold in expensive jars!) Forthin metals in DC mode you can't beat the fine tip you get with this method andno arc wandering! Joetools wrote:> I'll second what Dan says about TIG. Also WAY easier for really thin metals,like a lot of the fittings on the Piet.> > Rigbt now, it seems there's lots of TIG welders being sold via ebay, craigslist,etc, for a really good deal. Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 20 Jun 2012 06:29:49 -0700 (PDT)
Re: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: Michael Perez
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "Greg Cardinal"
Chemical sharpening:You get a jar of sodium nitrite. Hold your electrode in a pair of pliers and fireup a propane torch and just heat the tip of the tungsten until it glows redin the flame. Then quickly before it cools dip it in the sodium nitrite powder,moving it in small circles and up and down a little. A reaction takes placeas the oxydizing salt reacts with the hot tungsten and the tungsten is removedforming a beautiful smooth sharp tip. You quickly learn that you can controlthe angle of the sharpening by how far you dip the tungsten into the poolthat forms on the poweder as it melts and reacts. There are no grinding markson the electrode which is what makes the arc wander and difficult to controlon low power thin metal welding where you need fine control. Also grinding releasesfine dust which you don't want to breathe especially if you are using thoriatedtungsten which contains a few percent radioactive thorium. Here's aphoto of a 1/16" lanthanated electrode I chemically sharpened using this technique.Look at the fine tip on it!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/shar ... __________
Chemical sharpening:You get a jar of sodium nitrite. Hold your electrode in a pair of pliers and fireup a propane torch and just heat the tip of the tungsten until it glows redin the flame. Then quickly before it cools dip it in the sodium nitrite powder,moving it in small circles and up and down a little. A reaction takes placeas the oxydizing salt reacts with the hot tungsten and the tungsten is removedforming a beautiful smooth sharp tip. You quickly learn that you can controlthe angle of the sharpening by how far you dip the tungsten into the poolthat forms on the poweder as it melts and reacts. There are no grinding markson the electrode which is what makes the arc wander and difficult to controlon low power thin metal welding where you need fine control. Also grinding releasesfine dust which you don't want to breathe especially if you are using thoriatedtungsten which contains a few percent radioactive thorium. Here's aphoto of a 1/16" lanthanated electrode I chemically sharpened using this technique.Look at the fine tip on it!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/shar ... __________
Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "scudrun"
Ray,I will save you (20) and call you tonight with info. Thanx.--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Ray,I will save you (20) and call you tonight with info. Thanx.--------PAPA MIKERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: What welding rod did you use for 4130?
Original Posted By: "Gary Boothe"
There is also this advert for a product called chemsharp but it is just sodiumnitrite in an expensive bottle:http://www.youtube.com/watch?v=drgaJVKxJxwJoeRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
There is also this advert for a product called chemsharp but it is just sodiumnitrite in an expensive bottle:http://www.youtube.com/watch?v=drgaJVKxJxwJoeRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________