rgbrown, on 03 May 2012 - 11:54 PM, said:
What I was thinking of is that the sliding friction should be less because the teeth are more parallel over the duration of contact.
ah, again! that makes sense. still, more contact surface.
you'd think a thing like friction would be more intuitive. just when i think i've got my head around a thing, reality deals me a slap.
I keep intending to do some proper measurements, but never quite manage to find the time!
keep us posted.
Mark Bellis, on 05 May 2012 - 03:52 PM, said:
Gearing up by 5:1 for a faster axle is best with these too, since TLG don't have a 4000rpm motor available in the current range.
you should think about acquiring the 5292 motors that came with the rc vehicles a few years ago:
they don't have quite the rpm's that the train motors do, but they've got double the torque. they're beasts!
and 5:1 brings up another gripe: the ratios which the bevels offer are irregular. 3:1 is the only straight ratio which they provide. i get that they're very useful for transmissions, where the range of the ratios is the critical factor, as opposed to specific specific ratios, but outside of that, who really has use for a 7:3 or 9:5 ratio?
It was a travesty when the crankshaft axle holes were removed from the 24T gear.
i believe they changed the design because the original was prone to structural failure. regardless, i ordered several from bricklink, just to make sure i have some on hand.
Edited by KEvron, 05 May 2012 - 06:37 PM.