In a message dated 97-09-14 11:14:04 EDT, macy@bblmail.psycha.upenn.edu
writes:
> Good point. I guess if you tighten them down tight, does it really make a
> differerce?
It's all a matter of leverage, Larry. If you put the load out on the end of
the bolt, there is a strong bending force. If the bolt is hard (read
brittle), it will try to bend, but will break first. If it is soft (less that
grade 5) it will just bend. If you put the chain close to the block/head, the
moment arm is reduced, and the bolt will see only shear force, which the
bolts can handle much better than bending forces. By tightening the bolts
down, you are effectively increasing the diameter of the bolt by the diameter
of the nuts, which greatly increases resistance to bending, in addition to
reducing the lentgh of the lever arm.
Dan Masters,
Alcoa, TN
'71 TR6---------3000mile/year driver, fully restored
'71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion - see:
http://www.sky.net/~boballen/mg/Masters/
'74 MGBGT---3000mile/year driver, original condition
'68 MGBGT---organ donor for the '74
|