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Shaun Sullivan wrote:
> That's another good point. Based on your observation at high speeds
> even a differential won't be truly accurate; in fact, it could be
> much worse! If the inner wheels lose contact altogether, then an
> averaging differential will give a value between "fast" and "stop" -
> which would correspond to a much smaller distance than even the inner
> rail alone would produce.
A differential might have other problems. I seem to recall that use of
differentials was explored in geared locomotives (such as Shay, Climax, and
Heisler), and was abandoned because the differential caused power loss in
curves. (reference here: http://climaxlocomotives.com/history/ ). Not sure
if that would translate in reverse to an issue.
Frank
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Message has 1 Reply:
 | | Re: LEGOdometer
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| (...) Well, if a real train hits curves in any manner similar to how a LEGO train does, then the inside wheel will probably lift up enough to at least slip on the rail, which would result in that very effect. On the plus side, as it loses power, it (...) (16 years ago, 7-Aug-08, to lugnet.technic, lugnet.trains)
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Message is in Reply To:
| | Re: LEGOdometer
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| (...) That's something I hadn't considered. Fortunately, unless it's run backwards for a long time, it probably won't be an issue. It takes a good while to take up the lash in all of the gears in the opposite direction; the overall gear reduction is (...) (16 years ago, 6-Aug-08, to lugnet.technic, lugnet.trains, FTX)
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