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Post by phill3006 on May 12, 2004 5:47:41 GMT -5
hello all
can anyone help with the answer to the gears being made of phos-bronze for a 1.5 scale shay.will they take the load.it will be a 3-truck.the load is spread over 6 sets of gears.also has anyone made there own gears for the shay.if they have i would like to hear from you about the tooling you used for cutting the teeth
regards phill3006
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Post by John Stewart on May 12, 2004 7:13:12 GMT -5
Random thoughts; I am slowly building a 3/4" scale model of
the first Kozo shay; and one of the full size locomotives I work
on is a Shay.
I would expect they'd be ok, but, remember, all the load could possibly be transmitted through ONE axle, so you can't just divide by 6.
If you are worried about shearing teeth, I'd think that the shafts and
methods of attaching gears would be the weak link.
A bigger concern is getting something in the teeth, and having them
deformed. Full size shays should have gear covers to stop this
kind of ingress.
Other than the fact that the colour will be wrong, why not? Then again,
why not just purchase them?
Also, you can do the calculations with Kozo's calcs in the Climax
book, but put an offset of "0".
John Stewart.
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Post by phill3006 on May 17, 2004 2:26:49 GMT -5
john i think you answered my question as for buying them i called a supplier who carry the gears and got a shock on the price $156.00 +G.S.T per set multiply that by six i think i will make them.the bronze was only for the maching asspect as it will be easier to mill i could use steel bit harder to machine but if it is needed so be it.so the question will bronze hold up or should i go with steel.
regards phill3006
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