Original Posted By: BScott116(at)aol.com
Hey Dan,I've been stewing over the same thing with my ford hub.While there is not much room behind the hub, if there's enough to run about half and inch of the bolt through the back and then drill that end and run some safety wire around the backside of the hub.Something to bear in mind Dan. Before I went with the Ford, I interviewed everybody I could track down who had ever actually flown behind one. This amounted to about ten or twelve guys. In all these interviews, and all my reading, I've never heard of the four bolt hub coming off. A prop was completely lost from a Ford, but he was just bolting the prop to the four bolt hub directly, plus the FAA report stated that two of the bolts were found to be rusty where they had broken, leading to the conclusion that this plane had been flying around on two bolts for a while before the other two gave up the ghost.Douwe________________________________________________________________________________
Pietenpol-List: Ford hub
Pietenpol-List: Ford hub
Original Posted By: jeff wilson
I keep looking at the model T hub in the plans and wondering why it's even there..I can't see the purpose unless its just to have the center of the prop "filledin" . the bolts and the crush plate hold the prop against the hub which onlyseems to be a spacer to me.... am i missing something ?it sure looks to me like a prop bolted to the crank flange is just the same asadding a hub between the prop and the flange..any thoughts ?jeff20 ribs donefuselage wood rippedengine about to go outcool gauges on the shelfRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 15 Nov 2010 15:48:36 -0800 (PST)
I keep looking at the model T hub in the plans and wondering why it's even there..I can't see the purpose unless its just to have the center of the prop "filledin" . the bolts and the crush plate hold the prop against the hub which onlyseems to be a spacer to me.... am i missing something ?it sure looks to me like a prop bolted to the crank flange is just the same asadding a hub between the prop and the flange..any thoughts ?jeff20 ribs donefuselage wood rippedengine about to go outcool gauges on the shelfRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 15 Nov 2010 15:48:36 -0800 (PST)
Re: Pietenpol-List: Ford hub
Original Posted By: bender
Jeff,The crank flange on the Model A is small, too small to bolt a prop to and expect it to stay on and stay tracking properly. I bought a prop hub that Ken Perkins sells that fits the Continental 6-bolt spacing and crush plates that are available from him or ACS. Said hub, attaches on to the Model A crank flange with four cap screws. I used blue Locktite to insure those cap screws stay in there, because there is not enough room to fit a nut behind the crank flange. You can see the stuff that Perkins sells if you go to Mykitplane.com and look him up. His current email is KenandVernaperkins@sbcglobal.netAny other questions let me know. Dan HelsperPoplar Grove, IL. -----Original Message-----
Jeff,The crank flange on the Model A is small, too small to bolt a prop to and expect it to stay on and stay tracking properly. I bought a prop hub that Ken Perkins sells that fits the Continental 6-bolt spacing and crush plates that are available from him or ACS. Said hub, attaches on to the Model A crank flange with four cap screws. I used blue Locktite to insure those cap screws stay in there, because there is not enough room to fit a nut behind the crank flange. You can see the stuff that Perkins sells if you go to Mykitplane.com and look him up. His current email is KenandVernaperkins@sbcglobal.netAny other questions let me know. Dan HelsperPoplar Grove, IL. -----Original Message-----
Pietenpol-List: Re: Ford hub
Original Posted By: "bender"
I just finished a EAA gas welding class and would to start making some of my fittingsover the holidays. How much 4130 should I order for the piet?I tried to search the achieves but had no luck.Thanks,--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Ford hub
I just finished a EAA gas welding class and would to start making some of my fittingsover the holidays. How much 4130 should I order for the piet?I tried to search the achieves but had no luck.Thanks,--------JohnRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Ford hub
Re: Pietenpol-List: Fuel Starvation
Original Posted By: hvandervoo(at)aol.com
I've seen the hubs that Ken makes.. they look great..but the 4 bolt hub he makesis like the one Mr Pietenpol used... four bolts, well four studs..that holdthe T hub to the crank flange with 7/16 bolts right into the original holes...so the diameter is the same as the crank flangeDan your prop does not have a hole in the middle.. one of the things i was thinking..was the original idea with the T hub to center the prop on the shaft withthe wood turned spacerhere is Ken's 4 bolt hubjeffRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/prop ... ___Subject: Re: Pietenpol-List: Fuel Starvation
I've seen the hubs that Ken makes.. they look great..but the 4 bolt hub he makesis like the one Mr Pietenpol used... four bolts, well four studs..that holdthe T hub to the crank flange with 7/16 bolts right into the original holes...so the diameter is the same as the crank flangeDan your prop does not have a hole in the middle.. one of the things i was thinking..was the original idea with the T hub to center the prop on the shaft withthe wood turned spacerhere is Ken's 4 bolt hubjeffRead this topic online here:http://forums.matronics.com/viewtopic.p ... ttachments: http://forums.matronics.com//files/prop ... ___Subject: Re: Pietenpol-List: Fuel Starvation
Original Posted By: jeff wilson
Jeff,My tech counsler advised when test running the engine on the airframe.To roll your tailwheel in a ditch, giving the airplane a extreme nose up pitch (at least more than the expected Stall position)And see if the engine will run full throttle for at least 5 minutes.5 min climb will give you enough altitude to safetyHe considered this test mandatory before first flight!I tested this with 1/2 hour fuel in nose tank (2 1/2 gallons)Nose tank only has 9 inch head at level flight and this fuel quantity.I am using a Piper J 3 nose tank, No pump, Corvair engine with a up draft Zenith carburator.HansNX15KV-----Original Message-----
Jeff,My tech counsler advised when test running the engine on the airframe.To roll your tailwheel in a ditch, giving the airplane a extreme nose up pitch (at least more than the expected Stall position)And see if the engine will run full throttle for at least 5 minutes.5 min climb will give you enough altitude to safetyHe considered this test mandatory before first flight!I tested this with 1/2 hour fuel in nose tank (2 1/2 gallons)Nose tank only has 9 inch head at level flight and this fuel quantity.I am using a Piper J 3 nose tank, No pump, Corvair engine with a up draft Zenith carburator.HansNX15KV-----Original Message-----
Pietenpol-List: Fuel Starvation
Original Posted By: Dan Yocum