Eagler's Nest

Airframes => Single Seaters => XL => Topic started by: Bob Wood on December 09, 2013, 10:21:03 AM

Title: XL Motor Mount bolts length and torque..
Post by: Bob Wood on December 09, 2013, 10:21:03 AM

For the top motor mount bolts, how do you know when they are torqued tight enough? Sort of scratching my head on bolt length and how tight to torque against the rubber mounts..

Same on bottom I guess, just need to be sure bolts do not bottom out in case.....

Is it a real low torque...like 8- 10???

Thanks,
Bob

Title: Re: XL Motor Mount bolts length and torque..
Post by: Steve on December 09, 2013, 10:33:10 AM

Bob:

I watch the rubber bushing and compress them 1/8"... Then I grab the prop extension and rack the engine around to see that I get the same movement on all 4 bolts...

Joe Engelman makes special purpose stainless bottom bolts - the shop drawings for them are in his File folder over on the Yahoo group... I buy the grade 5 metric bolt from Napa...

Steve

Title: Re: XL Motor Mount bolts length and torque..
Post by: Bob Wood on December 09, 2013, 02:28:10 PM

Great, thanks Steve. Will check out Joe's bolts.

Bob