Cliff Hansen wrote:
> I spent this last week chasing down material to make a
> front spring compressor for my TR4A. Essentially I got a
> piece of grade 5 equivalent 5/8" threaded rod, a steel
> plate to push up against the spring pan, and some grade
> 5 hex nuts and washers. Cost about $15 total, modeled
> after TRF's tool.
>
> I have just about destroyed this tool removing one spring.
> Too many threads on the rod are chewed to make me feel
> confident about using this thing to remove the other spring,
> let alone install them. I can just see it, I get the other spring
> pan loose, its coming down, and the nut strips its threads.
> Now I have to cut a piece of grade 5 steel rod with a 400 lb/inch
> spring holding the rod in tension.
>
You could try acme threads. Acme threads are square threads used in
clamps and vises. The down side is the pitch is much steeper, less
threads per inch. You'll need more torque to tighten them but you'll
need less turns.
You won't find acme thread in the average hardware stores, you'll have
to look in the Yellow Pages under Steel.
Peter J. Thomas
1966 TR4A IRS
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