----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- After a long discussion on the list about this, Stefan wrote this :
REgards, Harry Subj: Wing Bolt Torque Values - Final Results Date: 11/22/1999 1:25:16 AM Eastern Standard Time From: [EMAIL PROTECTED] (Stefan Fanselow) Sender: [EMAIL PROTECTED] To: [EMAIL PROTECTED] 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 ==^================================================================ EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Sid.bAhN69 Or send an email To: [EMAIL PROTECTED] This email was sent to: [EMAIL PROTECTED] T O P I C A -- Register now to manage your mail! http://www.topica.com/partner/tag02/register ==^================================================================
<<attachment: winmail.dat>>
