Original Posted By: Jack
Just a short note to say that I got my crankshaft back from Moldex Crankshaft inMichigan today. What a Beeeauty!! I know this may not be forum worthy, butI am excited to get my first converted engine part in my hands. The heart ofmy power plant. It is nice and clean and shiny... nitride coated, perfect radiuson the journals and mirror smooth polishing work. This looks like a totallydifferent crank from the one I sent in, but I know it is the same... I digit. 8)Old crusty, nasty, broken crank on the bottom. Nice, clean, fresh and polishedcrank on the top.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/pc12 ... __________
Pietenpol-List: Corvair Crankshaft
Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: "K5YAC"
Question. Did they remove the crankgear prior to nitriding? Are you pressingon a new gear or using the original?Dan WilsonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Corvair Crankshaft
Question. Did they remove the crankgear prior to nitriding? Are you pressingon a new gear or using the original?Dan WilsonRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Corvair Crankshaft
Re: Pietenpol-List: Corvair Crankshaft
Original Posted By: Ryan Mueller
The gear was removed when I acquired this crankshaft. I have the original parts,which I plan to reuse (I think). They will be pressed back on with a hydraulicpress and held in place with the safety shaft. The reason I say "I think" is because I can't remember if reusing the cam drivegear is recommended. I know that I will need to use a new one on the actualcam shaft, but it may be acceptable to use the original on the crankshaft. Can'tremember right now. As for the flange (the part right in front of the camdrive gear), yes, I will be reusing that for sure. All of these will be pressedback on and secured with a WW safety shaft and prop hub assembly.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 08:20:39 -0600Subject: Re: Pietenpol-List: Corvair Crankshaft
The gear was removed when I acquired this crankshaft. I have the original parts,which I plan to reuse (I think). They will be pressed back on with a hydraulicpress and held in place with the safety shaft. The reason I say "I think" is because I can't remember if reusing the cam drivegear is recommended. I know that I will need to use a new one on the actualcam shaft, but it may be acceptable to use the original on the crankshaft. Can'tremember right now. As for the flange (the part right in front of the camdrive gear), yes, I will be reusing that for sure. All of these will be pressedback on and secured with a WW safety shaft and prop hub assembly.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 08:20:39 -0600Subject: Re: Pietenpol-List: Corvair Crankshaft
Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: "K5YAC"
Unlike the dads talked about by some here, my dad hated to fly. But he knewI loved it.He got a friend to give me my first ride in a J-3 on my 8th birthday, butdid not go up himself. He helped finance my first airplane, a 7AC, but onlyflew in it once, and he listened to my flying stories for years, alwaysasking for more. After he left military service, Dad never flew unless I was the PIC. Itwasn't because he thought I was particularly good; it was because he wouldrather have white knuckles and short breath than have me to think he didn'thave faith in me. I guess dads do that sort of thing.Mike Hardaway________________________________________________________________________________Subject: Pietenpol-List: Re: Corvair Crankshaft
Unlike the dads talked about by some here, my dad hated to fly. But he knewI loved it.He got a friend to give me my first ride in a J-3 on my 8th birthday, butdid not go up himself. He helped finance my first airplane, a 7AC, but onlyflew in it once, and he listened to my flying stories for years, alwaysasking for more. After he left military service, Dad never flew unless I was the PIC. Itwasn't because he thought I was particularly good; it was because he wouldrather have white knuckles and short breath than have me to think he didn'thave faith in me. I guess dads do that sort of thing.Mike Hardaway________________________________________________________________________________Subject: Pietenpol-List: Re: Corvair Crankshaft
Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: "K5YAC"
I didn't remove the gear... it was removed before I received it. One of the localEAA members had this as a spare. He already had it magnafluxed and threadedfor a safety shaft, but it needed the rest of the WW treatment. I'm not surewhy he took it off, but I have it and the flange. This generous fellow also gave me a spare set of good heads, case, distributor,safety shaft set, hybrid stud set, connecting rod set, accessory housing, OT-10camshaft, Marvel Schebler MA-3A carb and a few other "nice to have" items...so I'm not complaining.
I don't think I'll have any problem finding an appropriate press around here...do you foresee any difficulty I might have in reinstalling these items? I knowWW states that the fit is a bit less strong than the original fit, but thatis the whole idea behind the safety shaft anyway, right?--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Corvair Crankshaft
I didn't remove the gear... it was removed before I received it. One of the localEAA members had this as a spare. He already had it magnafluxed and threadedfor a safety shaft, but it needed the rest of the WW treatment. I'm not surewhy he took it off, but I have it and the flange. This generous fellow also gave me a spare set of good heads, case, distributor,safety shaft set, hybrid stud set, connecting rod set, accessory housing, OT-10camshaft, Marvel Schebler MA-3A carb and a few other "nice to have" items...so I'm not complaining.
I don't think I'll have any problem finding an appropriate press around here...do you foresee any difficulty I might have in reinstalling these items? I knowWW states that the fit is a bit less strong than the original fit, but thatis the whole idea behind the safety shaft anyway, right?--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Corvair CrankshaftRe: Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: Ryan Mueller
You know, now that I take another look at things... I kept talking about the camgear and flange as two different pieces, but it is actually one. Also, it turnsout that I don't have the original gear... I will need to pull the gear offmy old crank and put it on the new one. Any problems with doing that?--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 11:20:39 -0600Subject: Re: Pietenpol-List: Re: Corvair Crankshaft
You know, now that I take another look at things... I kept talking about the camgear and flange as two different pieces, but it is actually one. Also, it turnsout that I don't have the original gear... I will need to pull the gear offmy old crank and put it on the new one. Any problems with doing that?--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 11:20:39 -0600Subject: Re: Pietenpol-List: Re: Corvair Crankshaft
Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: "Gary Boothe"
Great, I'm taking the difficult path yet again. Ha ha! Oh well, I'm glad that you brought this to my attention. I know that WW is infavor of people doing things themselves (and I am too), but given the somewhattechnical process and the fact that they are set up to do this, I wonder if hewould be willing to perform this task? I guess I could shoot him a note andask. While I do have access to a press, I'm not sure that I could get the gear heatedproperly and in place the way he describes without screwing something up. Inaddition to that, magnafluxing again after the install? I don't trust anyonelocal to do that properly. I suppose it could go back to Moldex. This is goingto be one high dollar crankshaft once I get done with it. --------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Great, I'm taking the difficult path yet again. Ha ha! Oh well, I'm glad that you brought this to my attention. I know that WW is infavor of people doing things themselves (and I am too), but given the somewhattechnical process and the fact that they are set up to do this, I wonder if hewould be willing to perform this task? I guess I could shoot him a note andask. While I do have access to a press, I'm not sure that I could get the gear heatedproperly and in place the way he describes without screwing something up. Inaddition to that, magnafluxing again after the install? I don't trust anyonelocal to do that properly. I suppose it could go back to Moldex. This is goingto be one high dollar crankshaft once I get done with it. --------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: Prop Making
Original Posted By: "K5YAC"
Temps in N. Calif. took a turn for the worse are sitting at a very chilly 48deg! So I moved the Propeller Shop indoors.Dan Helsper and PF Beck say that this will someday be a prop! I think I'm onthe right track because the glue mess looks a lot like pictures I have seenof similar processes! Wood is Hickory.Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(16 ribs down.)________________________________________________________________________________Subject: Pietenpol-List: Re: Prop Making
Temps in N. Calif. took a turn for the worse are sitting at a very chilly 48deg! So I moved the Propeller Shop indoors.Dan Helsper and PF Beck say that this will someday be a prop! I think I'm onthe right track because the glue mess looks a lot like pictures I have seenof similar processes! Wood is Hickory.Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(16 ribs down.)________________________________________________________________________________Subject: Pietenpol-List: Re: Prop Making
Re: Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: Ryan Mueller
Cool... can't wait to see how it turns out.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 12:45:30 -0600Subject: Re: Pietenpol-List: Re: Corvair Crankshaft
Cool... can't wait to see how it turns out.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 12:45:30 -0600Subject: Re: Pietenpol-List: Re: Corvair Crankshaft
Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: Jim
True, Aircraft Specialties is about a block from where I work, as is Rick Romansand other very reputable shops. Problem is, they won't touch any experimentalcranks, cams, connecting rods, etc. as far as I know. Perhaps one of themmay mag it... I'll need to call to find out. Aircraft Specialties used to grindexperimental cranks and such, but they no longer service any uncertified parts.Part of my skepticism stems from a local (reputable) machine shop that referredme to a "hot rod" shop with a magnaflux machine. He was supposed to be good.I described the sort of application to the hot rod guy, and also how criticalit was that I end up with the best part I possibly can. He slapped it on hismagnaflux machine for about 45 seconds and deemed it good. What did I know,I'm not a machinist or magnaflux expert, but after talking to Joe at Moldex,he told me that there was no way that guy could have checked it thoroughly inthat amount of time. I didn't tell him of this story until after they (Moldex)had discovered a crack that the hot rod guy had missed. I suppose that it'spossible for anyone to make a mistake, but needless to say, I am leery aboutletting the local shops (non aviation) slap my engine together.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 19:45:38 +0000 (GMT)
True, Aircraft Specialties is about a block from where I work, as is Rick Romansand other very reputable shops. Problem is, they won't touch any experimentalcranks, cams, connecting rods, etc. as far as I know. Perhaps one of themmay mag it... I'll need to call to find out. Aircraft Specialties used to grindexperimental cranks and such, but they no longer service any uncertified parts.Part of my skepticism stems from a local (reputable) machine shop that referredme to a "hot rod" shop with a magnaflux machine. He was supposed to be good.I described the sort of application to the hot rod guy, and also how criticalit was that I end up with the best part I possibly can. He slapped it on hismagnaflux machine for about 45 seconds and deemed it good. What did I know,I'm not a machinist or magnaflux expert, but after talking to Joe at Moldex,he told me that there was no way that guy could have checked it thoroughly inthat amount of time. I didn't tell him of this story until after they (Moldex)had discovered a crack that the hot rod guy had missed. I suppose that it'spossible for anyone to make a mistake, but needless to say, I am leery aboutletting the local shops (non aviation) slap my engine together.--------Mark - working on wingsRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Sat, 12 Dec 2009 19:45:38 +0000 (GMT)
RE: Pietenpol-List: Prop Making
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Jim,I purchased Dan Helsper's prop carving instructions, and also got PF Beck'sgreat advice, too. Both are valuable, and I am taking from each what I canunderstand. I'm not sure I have the guts to lay a chainsaw on my prop, but Ihave my Dad's drawknife and his spoke shave, that he used to build his loghouse...I'll think of him with every stroke!Merry Christmas,Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(16 ribs down)-----Original Message-----
Jim,I purchased Dan Helsper's prop carving instructions, and also got PF Beck'sgreat advice, too. Both are valuable, and I am taking from each what I canunderstand. I'm not sure I have the guts to lay a chainsaw on my prop, but Ihave my Dad's drawknife and his spoke shave, that he used to build his loghouse...I'll think of him with every stroke!Merry Christmas,Gary BootheCool, Ca.PietenpolWW Corvair Conversion, mountedTail done, Fuselage on gear(16 ribs down)-----Original Message-----
Re: Pietenpol-List: Prop Making
Original Posted By: helspersew(at)aol.com
Re: Pietenpol-List: Re: Corvair Crankshaft
Original Posted By: Ryan Mueller
Subject: Re: Pietenpol-List: Re: Corvair Crankshaft
Subject: Re: Pietenpol-List: Re: Corvair Crankshaft