Here is a copy of the message I put onto the Coupers forum some time back: QUOTE
As the one who initiated the discussion on the correct torque value for the wing bolts, I feel compelled to share with the group the final results of the discussion here on the forum and of my direct communication with Univair: 1.) The wing bolts need to be torqued properly, just "tightening them really well" is not sufficient. 2.) There are no recommended values by the manufacturer, so AC 43.13-16 is the appropriate source 3.) The large and the small bolts used for the main wing attachment are indeed shear bolts. The nuts are, however, tension type nuts. This had led to some confusion during the discussion about whether to use shear- or tension values. 4.) The proper torque values are 1100-1300 inch lbs for the large bolts/nuts at the leading edge and 100-140 inch lbs for the smaller bolts/nuts at the trailing edge. Both values are indeed shear values. I have (for obvious reasons) only confirmend these numbers for the Mooney M-10. I am assuming that they are the same for Ercoupes / Aircoupes, but I urge everybody referring to this information for their own assembly to check for themselves in case the type of airplane is different. Safe flying, and have fun. Stefan in Tokyo Mooney M-10 Cadet N9547V UNQUOTE -----Original Message----- From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> To: [email protected] <[email protected]> Date: Friday, June 30, 2000 5:14 AM Subject: [COUPERS] wing bolt torques again > I know this was discussed at length in the past but will somebody > remind me what the *outcome* (preferably correct) was... > > What is the proper torque setting for both sizes of wing attach bolts? > > Thanks! > > Joa > ever so close to being back in the air! > N94432 > N30HP > >_________________________________________________________________________ __ _____ >To unsubscribe from this list please send mailto:[EMAIL PROTECTED] >___________________________________________________________ >T O P I C A The Email You Want. http://www.topica.com/t/16 >Newsletters, Tips and Discussions on Your Favorite Topics > __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ___________________________________________________________ T O P I C A The Email You Want. http://www.topica.com/t/16 Newsletters, Tips and Discussions on Your Favorite Topics
<<attachment: winmail.dat>>
