Shock roll bar bolt angle for Elan ( and Plus 2)
Posted: Mon Sep 27, 2021 1:27 am
Put my Elan on the hoist for a check over prior to my next race meeting in November (hopefully ).
I discovered that the 3/8 unf threaded section of one of the shock lower bolts that secure the roll bar has broken off.
It appears easy enough to machine up and weld on a new bolt but I need to know the "correct" angle versus the shock axis. I cant find any references to this angle anywhere
I measured 15 degrees for the TTR shocks on my Elan. From the front suspension drawing in the workshop manual, I calculated 14.8 degrees with the lower wishbones horizontal. If anyone has ever seen any more "official" number for this angle it would be good to know. The Plus 2 has a larger angle and I would be interested in knowing this also if anyone has it.
The "bolt" welded onto to the bottom eye of the shock appears to be a 7/16 inch bolt with its end machined down with a 3/8 unf thread. It appears to be identical to the "bolt" welded on the top of the shock strut that mounts in the chassis. At this point I see no reason why the lower 'bolt" could not remain the full 7/16 unf diameter and not be machined down as this would reduce the risk of failure that I experienced when using larger roll bars like I do at 22mm diameter
cheers
Rohan
I discovered that the 3/8 unf threaded section of one of the shock lower bolts that secure the roll bar has broken off.
It appears easy enough to machine up and weld on a new bolt but I need to know the "correct" angle versus the shock axis. I cant find any references to this angle anywhere
I measured 15 degrees for the TTR shocks on my Elan. From the front suspension drawing in the workshop manual, I calculated 14.8 degrees with the lower wishbones horizontal. If anyone has ever seen any more "official" number for this angle it would be good to know. The Plus 2 has a larger angle and I would be interested in knowing this also if anyone has it.
The "bolt" welded onto to the bottom eye of the shock appears to be a 7/16 inch bolt with its end machined down with a 3/8 unf thread. It appears to be identical to the "bolt" welded on the top of the shock strut that mounts in the chassis. At this point I see no reason why the lower 'bolt" could not remain the full 7/16 unf diameter and not be machined down as this would reduce the risk of failure that I experienced when using larger roll bars like I do at 22mm diameter
cheers
Rohan