Pietenpol-List: Re: Quotes--Redford to Axel

matronics · Post by **matronics** » Tue Feb 12, 2008 7:16 pm

Original Posted By: "MikeD"
Am now fitting compression struts & drag cables.to wing Using drawingsfor the PFA approved mods to wing spar.Both spars have the same depth 4 3/4 inches, both compression stuts 3/4square ,the top is flush with the top of the spar & the lower is spacedup 1/2 inch from the bottom of the spar, suggest don't champfer the thecompression struts in any way to follow lower rib surface, they need tobe full strength.When measuring for drag/Anti drag cables, suggest get wing all square &trammeled, before measuring cables, I found that the turnbuckles sometimes need adjusting & it is easy to exceed the max of 3 threads showingon the adjustment.if the cable is a bit short, fitting a shackle to the fitting fixesthis.Cheers Graham from Oz12/02/2008 3:20 PM________________________________________________________________________________Subject: Pietenpol-List: Re: Quotes--Redford to Axel

matronics · Post by **matronics** » Thu Feb 14, 2008 4:27 pm

Original Posted By: "MikeD"
Many thanks to Jack Phillips for the post on alum trailing edge. I bought some at SNF fly mart and havent felt good about using it. I will go with Douglas fir again.Dick N.----- Original Message -----

matronics · Post by **matronics** » Thu Feb 14, 2008 5:31 pm

Original Posted By: "Oscar Zuniga"
Usually I think the a75 has a 70 x 38 prop----- Original Message -----

matronics · Post by **matronics** » Thu Feb 14, 2008 5:51 pm

Original Posted By: "Rick Holland"

matronics · Post by **matronics** » Thu Feb 14, 2008 6:16 pm

Original Posted By: "Jim Malley"
taildrags(at)hotmail.com wrote:> Did someone have a tabulation of which props are being used with which engines?I'm running a 72x42 Hegy prop on the A65 but I've heard that a 72x38 or 40is indicated for the A75 to allow it to turn up to full rated RPM (and HP). I'd also be interested if anyone has such a prop available.> > Thanks.> > Oscar Zuniga> San Antonio, TX> mailto: taildrags(at)hotmail.com> website at http://www.flysquirrel.netYes that is true - if you load the 75 as you would the 65, you will not realizeall the power available. At 65 cruise rpm the 75 produces about the same horsepower,therefore logically it will spin it about the same rpm. You need to reduceload with pitch, diameter, or both. I am also in the market for those sameprops, my first choice being the 38 pitch.Mike--------Piet-builder-who-hopes-to-be-flying-next-summerRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________

matronics · Post by **matronics** » Thu Feb 14, 2008 9:31 pm

Original Posted By: Clif Dawson

matronics · Post by **matronics** » Thu Feb 14, 2008 9:45 pm

Original Posted By: Rick Holland
RickI am now working on a Volmer VJ 22 amphib, also all wood, 22 of 34 wing ribs done. We will be assembling wings at SNF this spring.Dick ----- Original Message -----

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