Aaron:
Call me slow Aaron, but I am missing something here. You stated
that the tube shock bracket was deflecting rearward as the suspension
compressed.
How do you explain that? Is the shock not aligned with the
compressive forces (not coaxial with the load)? Isn't the shock
vertical?
The lever shock has a linkage to the trailing arm that the tube
shock lacks. Is this somehow keeping the load coaxial with the lever?
Hmmm. Guess I need to go look at my suspension to visualize this.
Previously I had heard that if you adjusted your bump stops so
that the tube shock did not bottom out then you were probably safe from
frame cracking. Now I am hearing that even if the shock does not bottom
out, the mounting bracket can deflect and place a twisting load on the
diff mount and crack it anyway.
Is a tubular brace a fix, or would it merely shift the twisting
moment somewhere else that would crack?
Hey! Maybe those TR6 engineers knew what they were doing when
they retained the "obsolete" lever shock technology. Now isn't that a
thought?
Those photos are very scary. Your frame could literally fall
apart while you were driving if you did not respond to the strange
sounds coming from the car.
Vance
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
Behalf Of acekraut11@aol.com
Sent: September 22, 2006 10:48 AM
To: triumphs@autox.team.net; 6pack@autox.team.net
Subject: Rear Shock Conversion Frame Problems Part 2
Continued from Part 1....(pictures at triumphowners.com/108)
After discussing and brainstorming Rick suggested a length of 3/4
square inch metal tubing could be welded high up on the shock mount and
angled down and bolted to the frame, effectively stopping any backward
movement of the shock mount. Since I am planning on rebuilding a spare
frame I have and transferring the body over hopefully next year we plan
to leave the repair as is for right now, keep and eye on it, and make
the modifications to the new frame.
<snip>
My suggestion would be that if you have this conversion, check to see
if you have any damage, and have someone push down on the bumper while
you watch for movement of the shock mount. If you are considering buying
this conversion, or have bought it but not installed it, carefully
inspect the condition of the frame on your car and consider boxing in
the bottom of the differential bracket and/or adding a brace to the
bracket for additional support.
Aaron
Aaron Cropley
71 TR6 (Throttle Body Injection!)
http://www.triumphowners.com/108
Topsham, Maine
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