Let's see, If I pull with 100 lbs force on a 10 foot wrench... Nope, still not enough. Bet the plane will move, though!
> Are you sure you havn't got too many zero's or should they be > inch pounds > at those values? They seem incredibly high. These are bridge > bolt numbers. > > At 15:58 12/11/99 , you wrote: > >According to the Standard Aircraft Handbook, 4th Edition, > the torque for a > >5/8-18 Standard, Fine Thread bolt and nut (AN310, AN 315) is > >1,100-1,300(ft.lbs.). The 5/8-18 Fine Thread, Shear Nut > (AN320, 316, AN23 > >thru AN31) is 660-740. > >The 5/8-11 Coarse Thread Standard is 700-900, and Coarse > Thread Shear is > >425-540. The "AN" numbers is the same for coarse and fine thread. > > > >Rick > > > > > >----- Original Message ----- > >From: <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Cc: <[EMAIL PROTECTED]> > >Sent: Thursday, November 11, 1999 9:30 PM > >Subject: Re: Torque Values for Wing Bolts on Mooney M-10 > > > > > >> Tom, > >> > >> According to an A&P friend of mine who takes the wings off > his plane every > >> winter, there are no torque values published by Erco or > Alon for these > >bolts > >> (He didn't mention Mooney. Maybe they published a value.) > According to > >him > >> you use the specs for the size bolt as published in the > standard aircraft > >> hardware manuals. I THINK (as in - don't bet your life > on it!!) that the > >> torque for the big 5/8 inch bolts is about 100 ft lbs. > Not sure about the > >> smaller ones. > >> > >> I had a discussion about these bolts with a mechanical > engineer friend of > >> mine, and he explained to me that the strength in the wing > attach joint on > >> the Coupe comes from the friction developed between the spar attach > >fittings > >> when the wing bolts are torqued. According to him (and > his text books), > >the > >> wing attach bolts are actually loaded in tension, not in > shear. (I would > >> have bet money that those bolts were loaded in shear!! Shows what > >happens > >> when I bet money on something that I really don't know > anything about!!) > >> > >> That's more than you asked, I know. Point is, make sure > you get the > >correct > >> value and torque them properly. They're not supposed to > be loose at all. > >> You should be able to borrow a handbook from any A&P and > look up the > >values > >> in it. > >> > >> As always, this info is offered for entertainment purposes > only... I'm not > >an > >> aeronautical engineer and am not offering professional > advice. Consult an > >> aviation professional. Your mileage may vary. Rates > subject to change. > >> One size probably won't fit all. Etc... > >> > >> Wayne DelRossi > >> Alon N5618F > >> > > > Regards, > > Brian Garrett > ************************************************************** > **************** > Manager-Projects & Systems > Environmental Systems & Services Pty Ltd e-mail: > [EMAIL PROTECTED] > 405 Tooronga Rd Ph +61 3 9864 5300 > Hawthorn East 3123 Fax +61 3 9822 8028 > Australia > ************************************************************** > **************** >
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