Original Posted By: "wayne(at)taildraggersinc.com"
I know there are a number of builders who've opted for a 4 foot center section in order to use locally available 12'-0" long lumber for the outer wing panels. Thing I don't get is=2C wouldn't those outer panels be 12'-6" for the 29' wingspan? Also=2C looking for more info on the 4 foot center section if it's available. I'm pretty sure I had read that Steve Eldridge did this among others but I can't seem to find any info in a search.Tom B.________________________________________________________________________________Date: Sun, 23 Aug 2009 12:32:33 -0400
Pietenpol-List: 4 foot center section
Re: Pietenpol-List: Re: Slow list day.........How about this idea?
Original Posted By: helspersew(at)aol.com
So here's my version of a 4 foot center section. This should allow for a lot more fuel to burn once my Corvair crankshaft snaps. I haven't figured out the actual volume yet - the design is kinda evolving. I had some ideas about it that as I put them together=2C "it was revealed" that my ideas were not going to work. I have quite a bit more work to do=2C but I thought I'd share a couple pics as this stage.I just realized that if my plans fall together (financial plans) by mid summer=2C I should have all the major airframe and engine components to put this aircraft together. If you notice though=2C I didn't mention which summer : ) Should be ordering my spars soon - the stuff I got from McKormicks just didn't pan out like I thought so I'll use the wood elsewhere. If you think about it=2C for spar material (the stuff that really counts) Aircraft spruce price isn't really that expensive - even if you include the shipping. They estimated $130 shipping to Minneapolis area - hope that's close. That should leave me with about $400 or so worth in spar material (4 pieces at 12'-6" each). Put those together and that's about hoe much wood I've got into this thing in the fuse=2C tail=2C ply etc. - maybe a little more but not much. Thought about going to Youngblood lumber and getting some fir for spars but I just don't feel like taking another risk since my last one didn't turn out. Really=2C I got enough for (2) spars which is what I planned - the pieces are just not as "perfect" as I'd like. This isn't a slam on Mckormicks at all - It's just once I got the boards home and planed=2C it uncovered some stuff I wansn't happy with. I could make it work but I'd rather just have the peace of mind of having those critical members be certified materials. Call me paranoid I guess.Anyway=2C if anyone is interested in following the 4 foot center construction let me know. I can keep posting pics and progress reports. I intend to support it with laminated spruce / ply / spruce cabanes which I just laminated not too long ago.Later=2CTom B.-Fuse framed-End spinach framed-wing ribs completed-working on wing=2C center section and struts =0A4 foot center section=0Ahttp://cid-49bf7cf4860ada21.skydrive.live.com/redir.aspx?page=browse&resid=49BF7CF4860ADA21!149&type=5&Bpub=SDX.Photos&Bsrc=Photomail&authkey=E7ex1FbU7rA%24=0A________________________________________________________________________________Subject: Re: Pietenpol-List: Re: Slow list day.........How about this idea?
So here's my version of a 4 foot center section. This should allow for a lot more fuel to burn once my Corvair crankshaft snaps. I haven't figured out the actual volume yet - the design is kinda evolving. I had some ideas about it that as I put them together=2C "it was revealed" that my ideas were not going to work. I have quite a bit more work to do=2C but I thought I'd share a couple pics as this stage.I just realized that if my plans fall together (financial plans) by mid summer=2C I should have all the major airframe and engine components to put this aircraft together. If you notice though=2C I didn't mention which summer : ) Should be ordering my spars soon - the stuff I got from McKormicks just didn't pan out like I thought so I'll use the wood elsewhere. If you think about it=2C for spar material (the stuff that really counts) Aircraft spruce price isn't really that expensive - even if you include the shipping. They estimated $130 shipping to Minneapolis area - hope that's close. That should leave me with about $400 or so worth in spar material (4 pieces at 12'-6" each). Put those together and that's about hoe much wood I've got into this thing in the fuse=2C tail=2C ply etc. - maybe a little more but not much. Thought about going to Youngblood lumber and getting some fir for spars but I just don't feel like taking another risk since my last one didn't turn out. Really=2C I got enough for (2) spars which is what I planned - the pieces are just not as "perfect" as I'd like. This isn't a slam on Mckormicks at all - It's just once I got the boards home and planed=2C it uncovered some stuff I wansn't happy with. I could make it work but I'd rather just have the peace of mind of having those critical members be certified materials. Call me paranoid I guess.Anyway=2C if anyone is interested in following the 4 foot center construction let me know. I can keep posting pics and progress reports. I intend to support it with laminated spruce / ply / spruce cabanes which I just laminated not too long ago.Later=2CTom B.-Fuse framed-End spinach framed-wing ribs completed-working on wing=2C center section and struts =0A4 foot center section=0Ahttp://cid-49bf7cf4860ada21.skydrive.live.com/redir.aspx?page=browse&resid=49BF7CF4860ADA21!149&type=5&Bpub=SDX.Photos&Bsrc=Photomail&authkey=E7ex1FbU7rA%24=0A________________________________________________________________________________Subject: Re: Pietenpol-List: Re: Slow list day.........How about this idea?
Original Posted By: bender
Hi Jeff,I hope you are right about the current draw. Maybe if it proves to discharge during flight, I can use it as a back-up like you said, only for T-off and landing, or other mag failure. Yes the spark advance is wired in place. I already have the Slick mag with the impulse for starting purposes. Bernard didn't used this set-up (or maybe, I better check the "lost" BHP Papers to make sure) but at least it is unique and might be a topic of curiosity at Brodhead. Dan HelsperPoplar Grove, IL. (I'm back)PS Boy wouldn't that be something if I get better performance than the mag?.....nawwww-----Original Message-----
Hi Jeff,I hope you are right about the current draw. Maybe if it proves to discharge during flight, I can use it as a back-up like you said, only for T-off and landing, or other mag failure. Yes the spark advance is wired in place. I already have the Slick mag with the impulse for starting purposes. Bernard didn't used this set-up (or maybe, I better check the "lost" BHP Papers to make sure) but at least it is unique and might be a topic of curiosity at Brodhead. Dan HelsperPoplar Grove, IL. (I'm back)PS Boy wouldn't that be something if I get better performance than the mag?.....nawwww-----Original Message-----