> The traditional standby has been the Hobbytown
> universals, now sold by MicroMark.
> Stan Stokrocki
Personally, I like the Hobbytown U-joints because the nylon cup is thick and
tough.
On one loco, I drilled and tapped a hole in the side of the cup and inserted a
set screw. The set screw snugged up against a flat on the metal shaft. Then a
slightly larger hole was drilled so that the cup could slip onto the shaft with
a very minimal press fit -- not quite a slip fit, but close. End result: no
slippage and no stress on the plastic and no cracks. Works great.
After all these years, I am still amazed that loco makers still press fit
plastic parts onto metal parts and expect them to last. Most give out after
several years which should not be a surprise to anyone. Why is it so difficult
to learn from past mistakes and make improvements? I am baffled.
Ed L.
www.sscale.org
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