Original Posted By: "Chris Rusch"
To: ReplyTo: pietenpol-list(at)matronics.com Subject: Pietenpol-List: Powder Coat Supplier A few weeks ago someone mentioned a powder coat = supplier. I couldn=99t find in the archive. Could you share = again? Thanks, Jack DSM==========>http://www.matronics.com/Navigator?Piet ... ========== http://www.matronics.com/Navigator?Piet ... ntribution ________________________________________________________________________________Subject: Pietenpol-List: Riblet 612 cg range?
Pietenpol-List: Riblet 612 cg range?
Original Posted By: johnwoods(at)westnet.com.au
I am finishing up my pre cover w/b and it is working out real nice, should be ableto keep the cabanes vertical. Does anyone have the published cg range forthe Riblett airfoil? i was going to use 15-20" aft of the leading edge. Has anyoneelse other than Lowel flown the Riblett yet?Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 5 Jan 2012 01:27:22 +0800 (WST)
I am finishing up my pre cover w/b and it is working out real nice, should be ableto keep the cabanes vertical. Does anyone have the published cg range forthe Riblett airfoil? i was going to use 15-20" aft of the leading edge. Has anyoneelse other than Lowel flown the Riblett yet?Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 5 Jan 2012 01:27:22 +0800 (WST)
Pietenpol-List: Re: Riblet 612 cg range?
Original Posted By: "Don Emch"
I have brass bushing in my Piet. I just changed the Bungee cords on a friendsPiet and she has the plastic automotive Kingpin bushings in hers. The plane wasbuilt in the 70's and the bushings still look new. Seems like a great alternativeto me.--------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: Riblet 612 cg range?
I have brass bushing in my Piet. I just changed the Bungee cords on a friendsPiet and she has the plastic automotive Kingpin bushings in hers. The plane wasbuilt in the 70's and the bushings still look new. Seems like a great alternativeto me.--------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: Riblet 612 cg range?
Original Posted By: Jim Ash
I hope for the sake of safety that all of the Riblett wing builders are aware ofthat statement from Mr. Riblett. That range could prove to be difficult toobtain on the Pietenpol.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 4 Jan 2012 17:53:26 -0500 (GMT-05:00)
I hope for the sake of safety that all of the Riblett wing builders are aware ofthat statement from Mr. Riblett. That range could prove to be difficult toobtain on the Pietenpol.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Wed, 4 Jan 2012 17:53:26 -0500 (GMT-05:00)
Pietenpol-List: Re: Riblet 612 cg range?
Original Posted By: "Chris Rusch"
If you do the math, the BH airfoil has a range of 25-40% MAC (mean aerodynamicchord). The Riblett recommendation is for 18-28% MAC. For reference, Beech hasa CG range of 21-37% MAC for the Bonanza, slightly more restrictive than BHbut wider than Riblett. The Beech 18 is unstable with a CG aft of 30.5 whichis in line with the Riblett. The swept wing aircraft I've flown have run inthe 16-35% range.The point of all this is that there is no good rule of thumb for CG limits butthey need to be determined by flight testing in an organized, scientific mannerif you're flying serial number 1. Sounds like fun!!!For those who are close to flying the Riblett, this would be an excellent use ofthe 25/40 hour fly off rather than boring holes in the sky.Dave AldrichRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Riblet 612 cg range?
If you do the math, the BH airfoil has a range of 25-40% MAC (mean aerodynamicchord). The Riblett recommendation is for 18-28% MAC. For reference, Beech hasa CG range of 21-37% MAC for the Bonanza, slightly more restrictive than BHbut wider than Riblett. The Beech 18 is unstable with a CG aft of 30.5 whichis in line with the Riblett. The swept wing aircraft I've flown have run inthe 16-35% range.The point of all this is that there is no good rule of thumb for CG limits butthey need to be determined by flight testing in an organized, scientific mannerif you're flying serial number 1. Sounds like fun!!!For those who are close to flying the Riblett, this would be an excellent use ofthe 25/40 hour fly off rather than boring holes in the sky.Dave AldrichRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Riblet 612 cg range?
Re: Pietenpol-List: Classic Aviation footage
Original Posted By: Greg Bacon
My estimates put the cg at 18" the way i have it rigged now.....i did some archivesearching and pieti lowell says the cg range is real similar to the originalpiet airfoil. I was really hoping some more people would be flying the riblettsby now, i dont want to be first!!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 5 Jan 2012 07:57:10 -0600Subject: Re: Pietenpol-List: Classic Aviation footage
My estimates put the cg at 18" the way i have it rigged now.....i did some archivesearching and pieti lowell says the cg range is real similar to the originalpiet airfoil. I was really hoping some more people would be flying the riblettsby now, i dont want to be first!!Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Thu, 5 Jan 2012 07:57:10 -0600Subject: Re: Pietenpol-List: Classic Aviation footage
Re: Pietenpol-List: Re: Riblet 612 cg range?
Original Posted By: Ryan Mueller
Subject: Re: Pietenpol-List: Re: Riblet 612 cg range?
Subject: Re: Pietenpol-List: Re: Riblet 612 cg range?
Pietenpol-List: Re: Riblet 612 cg range?
Original Posted By: "Chris Rusch"
Hello good people!Seems like my mention of SE-5 type sidepipes sparked some discussion. Sofar I agree with all the comments I"ve read.Yes, they will add some weight, yes they will make entrance and egress a bitmore challenging if hot. My calculations however, show that the weight of two thin sidepipes willcertainly not be more than one long "swiss" muffler down the bottom. As forscalding oneself, (or passenger) I plan on wrapping the pipes next to each"pit" on the left side (the proper side to mount a steed don't you know!)with exhaust wrap. So yeah, definitely not as efficient as short stacks, but I'm succumbing tothe "coolness factor".And, if it is too heavy or doesn't work out in some way, I can eliminatethem and add a little downtube to the muffler and "Bob's your uncle!!"Might make a nice hand warmer too. That's a plus!Douwe________________________________________________________________________________Subject: Pietenpol-List: Re: Riblet 612 cg range?
Hello good people!Seems like my mention of SE-5 type sidepipes sparked some discussion. Sofar I agree with all the comments I"ve read.Yes, they will add some weight, yes they will make entrance and egress a bitmore challenging if hot. My calculations however, show that the weight of two thin sidepipes willcertainly not be more than one long "swiss" muffler down the bottom. As forscalding oneself, (or passenger) I plan on wrapping the pipes next to each"pit" on the left side (the proper side to mount a steed don't you know!)with exhaust wrap. So yeah, definitely not as efficient as short stacks, but I'm succumbing tothe "coolness factor".And, if it is too heavy or doesn't work out in some way, I can eliminatethem and add a little downtube to the muffler and "Bob's your uncle!!"Might make a nice hand warmer too. That's a plus!Douwe________________________________________________________________________________Subject: Pietenpol-List: Re: Riblet 612 cg range?
Original Posted By: "Cuy, Michael D. (GRC-RXD0)[ASRC AEROSPACE CORP]"
Hi Rich,If you look through the archives, there is a ton of debate about the Riblett airfoils.....Ikind of got trapped in the hype reading the possible advantages overthe Piet airfoil, and thats what i settled on. I dont know yet if i made amistake or not seeing there is only one Piet with a Riblett flying.I did call a aircraft engineer friend of mine and he ran both the numbers for thePiet and the Riblett and his results were comforting saying the Riblett doesshow better all around characteristics that the Piet, but yet to be proven inthe real world. (other than Lowell)And to answer my original reason for this post is the optiimum cg for the riblettis around 16" aft and maxed out at 18" The calculation stated the plane willfly much more stable with a FWD cgRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Hi Rich,If you look through the archives, there is a ton of debate about the Riblett airfoils.....Ikind of got trapped in the hype reading the possible advantages overthe Piet airfoil, and thats what i settled on. I dont know yet if i made amistake or not seeing there is only one Piet with a Riblett flying.I did call a aircraft engineer friend of mine and he ran both the numbers for thePiet and the Riblett and his results were comforting saying the Riblett doesshow better all around characteristics that the Piet, but yet to be proven inthe real world. (other than Lowell)And to answer my original reason for this post is the optiimum cg for the riblettis around 16" aft and maxed out at 18" The calculation stated the plane willfly much more stable with a FWD cgRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________