Original Posted By: "coxwelljon"
That's awsome... your replies give me a nice warm fozzy. ..will see how she handlesafter the annual. I thought about cracking out the oxy-acetyline torch and tossing together a newset of tailfeathers using 4130, but this should do the trick...or atleast dojust that little vertical stab out of 4130 and keep the rest wood.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: GN-1 progress
Pietenpol-List: GN-1 progress
Original Posted By:
Well, my corvair engine is almost buttoned up. I have installed the breather portsfrom the valve cover and have my Bosch starter & bracket of my own designon and ready to go. I am planning on bringing the engine to CC24 to run on atest stand. I also finished building my air/oil separator yesterday out of a couple of beancans. It is similar to the Tony Bingelis design. It turned out great, lightweight, very cheap (under $10) and looks much like the A.S. $250 dollar model.I had a great conversation with William Wynn last evening and I think I have allbases covered. Now the biggest problem is getting it into the back of my DodgeCaliber for the trip to SC and resetting the head lights to compensate forthe extra weight.I am getting excited about the possibility of running the engine. This will bemy second Corvair College and they are great. I highly recommend them to anyonewho is building a corvair engine or serious about doing so. There is somuch to be gained from WW, his staff or volunteers, and other builders.When I return from CC24 the engine will go on the airframe to check weight andbalance, then off again so I can begin covering. I have the fuselage and onewing yet to cover.Jon Coxwell, (100 hp - GN-1 Aircamper, really a Pietenpol)Remsen, NYcoxwelljon(at)frontiernet.net--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Well, my corvair engine is almost buttoned up. I have installed the breather portsfrom the valve cover and have my Bosch starter & bracket of my own designon and ready to go. I am planning on bringing the engine to CC24 to run on atest stand. I also finished building my air/oil separator yesterday out of a couple of beancans. It is similar to the Tony Bingelis design. It turned out great, lightweight, very cheap (under $10) and looks much like the A.S. $250 dollar model.I had a great conversation with William Wynn last evening and I think I have allbases covered. Now the biggest problem is getting it into the back of my DodgeCaliber for the trip to SC and resetting the head lights to compensate forthe extra weight.I am getting excited about the possibility of running the engine. This will bemy second Corvair College and they are great. I highly recommend them to anyonewho is building a corvair engine or serious about doing so. There is somuch to be gained from WW, his staff or volunteers, and other builders.When I return from CC24 the engine will go on the airframe to check weight andbalance, then off again so I can begin covering. I have the fuselage and onewing yet to cover.Jon Coxwell, (100 hp - GN-1 Aircamper, really a Pietenpol)Remsen, NYcoxwelljon(at)frontiernet.net--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: GN-1 progress
Original Posted By: coxwelljon
Now listen to this guy (he is thinking of all the other drivers on the pike ( He is )resetting the head lights to compensate for the extra weight.he gets a star in my book one of my bigest bug at night is the bright lights on cars as they blind youTHANKS JOHN73 w8zrz-----Original Message-----
Now listen to this guy (he is thinking of all the other drivers on the pike ( He is )resetting the head lights to compensate for the extra weight.he gets a star in my book one of my bigest bug at night is the bright lights on cars as they blind youTHANKS JOHN73 w8zrz-----Original Message-----
Pietenpol-List: GN-1 progress
Original Posted By: Jim Boyer
Pietenpol-List: Re: Vert-Offset
Original Posted By: "coxwelljon"
Michael,I will take some pictures and post them when I get a chance. The air oil separatoris a pretty straight forward adaptation from a Tony Bengelis sketch thatI found on the net. I just used the materials I had on hand, literally 2 Goyablack bean cans (the ones with the rounded bottoms so they stack), a 12" pieceof 1/2" rigid copper tubing, a piece of 3/8" soft copper tubing, a 1/4" fenderwasher and a scrap 1/4" carriage bolt. I had to buy an assortment of largeo-rings for $2 and cut one down to size. The inside element is window screenand 2 copper Chore Girls. I have to admit that it took several hours of scratchingmy head and looking on the internet to figure it out and then I had tolearn how to use some silver solder I had on very thin material. Time will tellif it is an effective design but unless there is something very different insidethe Aircraft Spruce model this should work the same.My starter was the result of purchasing a used VW geared starter that had the rightsize pinion gear and turned counter clockwise. Again I just used materialout of my scrap bin. The whole assembly is a little heavier than WW's. I thinkhis starter weight is about 8 lbs and I would guess his aluminum bracketsare about 8 to 10 oz. My completed assemble is 10.25 lbs and has a base made3/16" bent steel plate. It is quite rigid and easily adjusted with shims underthe anchor bolts. I did use a lighter top cover which gains me back a 1/2lb. I used the lighter cover only because it came with my project. When I getthe pictures It will tell what the story.--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Vert-Offset
Michael,I will take some pictures and post them when I get a chance. The air oil separatoris a pretty straight forward adaptation from a Tony Bengelis sketch thatI found on the net. I just used the materials I had on hand, literally 2 Goyablack bean cans (the ones with the rounded bottoms so they stack), a 12" pieceof 1/2" rigid copper tubing, a piece of 3/8" soft copper tubing, a 1/4" fenderwasher and a scrap 1/4" carriage bolt. I had to buy an assortment of largeo-rings for $2 and cut one down to size. The inside element is window screenand 2 copper Chore Girls. I have to admit that it took several hours of scratchingmy head and looking on the internet to figure it out and then I had tolearn how to use some silver solder I had on very thin material. Time will tellif it is an effective design but unless there is something very different insidethe Aircraft Spruce model this should work the same.My starter was the result of purchasing a used VW geared starter that had the rightsize pinion gear and turned counter clockwise. Again I just used materialout of my scrap bin. The whole assembly is a little heavier than WW's. I thinkhis starter weight is about 8 lbs and I would guess his aluminum bracketsare about 8 to 10 oz. My completed assemble is 10.25 lbs and has a base made3/16" bent steel plate. It is quite rigid and easily adjusted with shims underthe anchor bolts. I did use a lighter top cover which gains me back a 1/2lb. I used the lighter cover only because it came with my project. When I getthe pictures It will tell what the story.--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Vert-Offset
Original Posted By: "Cuy, Michael D. (GRC-RXD0)[Vantage Partners, LLC]"
The DAR in this area told me that as a rule of thumb if you sight along the axisof the vert stab the line should hit about 25% in from the longeron at the firewall.Right or left depending on whether you are using a clockwise or counterclock wise turning engine. This guy works a lot on cubs and short wing pipers,but remember this is just a rule of thumb and a place to start. The vert. stab on the GN-1 is well braced close to the hinge post. I suspect itwill take a lot more horizontal force than you think.Jon CoxwellCorvair powered GN-1--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
The DAR in this area told me that as a rule of thumb if you sight along the axisof the vert stab the line should hit about 25% in from the longeron at the firewall.Right or left depending on whether you are using a clockwise or counterclock wise turning engine. This guy works a lot on cubs and short wing pipers,but remember this is just a rule of thumb and a place to start. The vert. stab on the GN-1 is well braced close to the hinge post. I suspect itwill take a lot more horizontal force than you think.Jon CoxwellCorvair powered GN-1--------Jon Coxwell GN-1 BuilderRecycle and preserve the planetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Re: Vert-Offset
Original Posted By: "TriScout"
Subject: Pietenpol-List: self-commencersWow, you guys with planes that have self-commencers are something else. Starters,batteries, man. You mean you can actually sit IN your cockpit and start your engines? Whew...whatthe heck will theythink of next? ! Used to hand prop a Kinner on a friend's Fleet like this Ryan has...those impulsemags were NICE!http://www.youtube.com/watch?v=6Xobamf7 ... ___Subject: Pietenpol-List: Re: Vert-Offset
Subject: Pietenpol-List: self-commencersWow, you guys with planes that have self-commencers are something else. Starters,batteries, man. You mean you can actually sit IN your cockpit and start your engines? Whew...whatthe heck will theythink of next? ! Used to hand prop a Kinner on a friend's Fleet like this Ryan has...those impulsemags were NICE!http://www.youtube.com/watch?v=6Xobamf7 ... ___Subject: Pietenpol-List: Re: Vert-Offset
Original Posted By: Oscar Zuniga
Speedbrake- No engine mount offsetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Speedbrake- No engine mount offsetRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Pietenpol-List: Vert-Offset
Original Posted By: Oscar Zuniga
I'll pass along my experience with vertical stabilizer offset. Scout originally had an A65=2C no vertical stabilizer offset=2C and had a bent metal rudder trim tab on it. The airplane required feet on the rudder bar and a little pressure to keep it straight at all times=2C and would yaw in straight & level flight if feet were taken off the bar. The A75 made no detectable difference in rudder demand.First attempt at deleting the rudder trim tab was to offset the VS just about the amount most of the others are talking about... 1/2". It was about all the offset I felt comfortable putting in=2C because the rear spar remains fixed and you're essentially torquing the VS to move the leading edge of it over. Test-flew=2C it helped but still required rudder.Next attempt was to offset the engine thrustline. Offset was essentially zero when we started=2C and is now about 2 degrees right and I have no bent metal rudder trim tab anymore. The airplane is very nearly a feet-flat-on-the-floor flyer in cruise now. I could keep tweaking it with a tad more engine thrustline offset.Oscar ZunigaAir Camper NX41CC "Scout"A75 powerMedford=2C OR ________________________________________________________________________________
I'll pass along my experience with vertical stabilizer offset. Scout originally had an A65=2C no vertical stabilizer offset=2C and had a bent metal rudder trim tab on it. The airplane required feet on the rudder bar and a little pressure to keep it straight at all times=2C and would yaw in straight & level flight if feet were taken off the bar. The A75 made no detectable difference in rudder demand.First attempt at deleting the rudder trim tab was to offset the VS just about the amount most of the others are talking about... 1/2". It was about all the offset I felt comfortable putting in=2C because the rear spar remains fixed and you're essentially torquing the VS to move the leading edge of it over. Test-flew=2C it helped but still required rudder.Next attempt was to offset the engine thrustline. Offset was essentially zero when we started=2C and is now about 2 degrees right and I have no bent metal rudder trim tab anymore. The airplane is very nearly a feet-flat-on-the-floor flyer in cruise now. I could keep tweaking it with a tad more engine thrustline offset.Oscar ZunigaAir Camper NX41CC "Scout"A75 powerMedford=2C OR ________________________________________________________________________________
Re: Pietenpol-List: Re: GN-1 progress
Original Posted By: Michael Perez