I was just at the local Ace and was checking out thickness of metals measuring 12" x 12". I agree that 1/4 is way overkill. 1/8" will provide superior strength. 1/16" just did not sit well with me as I could see it bending under loads. I am going to use 1/8" x 9" x 36". There will be three rows of 3/4" holes. My drawing is on my computer at work but I think I placed 11 holes on the top row, 8 in the middle row with a space in the center row for the push rod attach point and 11 holes in the bottom row. I will pop rivet an aluminum piano hinge to the brake and attach it to the fuselage below the main spar. I have the manual Rand flap handle mounted to the front center of my main spar which will actuate the brake. Thanks for your inputs.
Mark Jones (N886MJ) Wales, WI USA E-mail me at flyk...@wi.rr.com Visit my KR-2S CorvAIRCRAFT web site at http://mywebpage.netscape.com/n886mj/homepage.html ----- Original Message ----- From: "Joseph H Horton" <joe.kr2s.buil...@juno.com> To: <kr...@mylist.net> Sent: Wednesday, May 12, 2004 8:13 PM Subject: Re: KR> Aluminum Speed Brake > Mark wrote: > On Wed, 12 May 2004 18:05:45 -0500 "Mark Jones" <flyk...@wi.rr.com> > writes: > > I have searched the archives on "aluminum speed brake" and only got > > eight results. I am going to install an aluminum speed brake with > > three rows of 3/4" diameter holes. I am planning on a 9" x 36" size. > > My question is...what thickness 6061-T6 aluminum should I use? The > > only reference I have found stated .060 but personally, I think that > > is way too thin. I was more inclined to 1/4". What do you guys > > think? Thanks > > Mark- No experience here, just a couple thoughts. The 1/4" is going to be > a pretty heavy piece of metal. The .060 doesn't sound all that > unresonable. (I used that as the instrument panel.) It could have hemed > edges for some stiffness and/or some formed or applied stiffners to the > face of the brake. > Joe Horton > Coopersburg, Pa. > joe.kr2s.buil...@juno.com > > > _______________________________________ > to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
