I am going up on the Teflon and spacer thickness to 3/8 inch from 1/4 inch.
Too hard to fasten the 10-32 throttle cable to the button.
It makes a marginal connection to a button only 1/4 inch thick.
If you use the 3/8 Teflon then McMaster Carr has off the shelf steel spacers
that will work as buttons. Much, much, much easier than making your own.
You would need a lathe anyway. I spent four hours today fooling
around trying to make a good button.
McMaster Carr 3/4 inch OD 3/8th inch long 5/16th ID steel spacer part
number 92415A455 $3.32 well worth it.
Also buy the precision ground blanks in Teflon. McMaster Carr
part number 9711K2 for 3/8 thick 4 inches wide and 12 inches long.
Expensive but well worth it. +-.005
I got some 1/4 Teflon sheet and the thickness was all over the place.
Too wavy. Sure to lead to problem. +.038 - .019 in 3/8 thickness.
I thought a lot about this and this is still the best way to
go. It is way over kill but you don't want the throttle cable
to become disconnected from the slide. One of those things
you don't want to fool around with.
Paul Lamar
Here is the 3/8th thick on the left and the 1/4 inch thick on the right.
Much more robust connection between the throttle cable and the slide.
Paul Lamar
Paul, the part number for the Button is not a "Nut" its a spacer which is not what we
are looking for. We need a nut threaded for 3/16" rod or 10-32. T.W.
Yes you do a nut but nuts are not shaped right.
You need to drill a hole in the side of the spacer and tap it for
10-32. Unless of course there is something already out there in the proper shape
I don't know about. The round button distributes the stress in the
Teflon better than anything that might be rectangular.
Here is what rev 11 looks like on the engine.
There needs to be belt shield in case the water pump belt comes
off and takes out the throttle cable. Been know to happen with
wires.
Paul Lamar
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