Georgia Trail Riders Forum

MEMBERS DISCUSSION AREA => General Discussion => Topic started by: lt99ls1 on March 30, 2015, 11:49:53 AM

Title: Depth on joints?
Post by: lt99ls1 on March 30, 2015, 11:49:53 AM

How far in fractions of inch/inchs or number of threads do you think a heim joint should be screwed in to be safe and durable?

Title: Re: Depth on joints?
Post by: DOUG on March 30, 2015, 11:55:59 AM

Half of what is available?

Title: Re: Depth on joints?
Post by: lt99ls1 on March 30, 2015, 12:03:03 PM

Does that include the jam nut?
If the available amount is 1/2 inch then a 1/4 inch of the thread is enough?
If the available amount is 2 inches then a 1 inch of the thread is enough or is that over kill?

Title: Re: Depth on joints?
Post by: DOUG on March 30, 2015, 12:22:54 PM

I'm speaking of a properly made joint and threaded stud.  The length should always be a factor of the diameter, so that half is always strong enough.  A 1/2" total should be small load and fine threads. 

More info please?

http://file.lasersaur.com/docs-thirdparty/Fastener_Design_Manual.pdf (http://file.lasersaur.com/docs-thirdparty/Fastener_Design_Manual.pdf)

http://www.portlandbolt.com/technical/faqs/recommendation-on-thread-engagement/ (http://www.portlandbolt.com/technical/faqs/recommendation-on-thread-engagement/)

Title: Re: Depth on joints?
Post by: DOUG on March 30, 2015, 12:24:03 PM

If you followed some of that link guidelines, it would be the length of the nut plus 2 threads on the inside.

Title: Re: Depth on joints?
Post by: 94xjsport94 on March 30, 2015, 12:25:34 PM

I've always heard 1" threaded in to a weld in bung before the jam nut. Now with my lowers I pushed the front a little bit more forward and I know I don't have 1" in the bung. It'll work until I can build new lowers later on.

1/2 the length of the threaded stud should be a good rule of thumb. What joint only has 1/2" of threads?!

Title: Re: Depth on joints?
Post by: lt99ls1 on March 30, 2015, 02:30:52 PM

7/8 diameter heim joints on the track bar. I have 13/16 of the 2 inch long shaft in the bung NOT including the jam nut.
http://www.ruffstuffspecialties.com/catalog/merchant.mvc?Screen=PROD&Product_Code=78x34RE&Store_Code=ruffstuff&search=heim&offset=&filter_cat=&PowerSearch_Begin_Only=&sort=&range_low=&range_high= (http://www.ruffstuffspecialties.com/catalog/merchant.mvc?Screen=PROD&Product_Code=78x34RE&Store_Code=ruffstuff&search=heim&offset=&filter_cat=&PowerSearch_Begin_Only=&sort=&range_low=&range_high=)

Title: Re: Depth on joints?
Post by: 94xjsport94 on March 30, 2015, 02:34:12 PM

I'd run it.

Title: Re: Depth on joints?
Post by: DOUG on March 30, 2015, 03:44:35 PM

On that size, me too.  Loctite on the jam nut?