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"Steve Tyng" <SteveT44-at-comcast.net>
RE: Track limits [TANKS]
Tue, 21 Mar 2006 06:59:54 -0500
> I have a tricky question for you all. Will any sprocket
> driven track hold up to 900rpm? seems at that speed the
> track would be pushing some sort of limits. Also will a
> scale track (made well) stand up to the 900rpm abuse?
At 900rpm your talking about twice the speed of the Cromwell. At full scale
that would be close to 90mph. I'm sure the TTS design (built well) could
hold up, not sure about a scale reproduction. Two other factors to consider
with high speed are suspension and controllability. At these speeds an
unsuspended tank will beat itself to death. For control you WILL NEED
proportional speed control.
> I guess the ideal vehicle to do this with would be a t-34
> or a t-80, but I can't bring myself to build russian
In my opinion you are correct. Designs derivative of the original Christie
design (large well spaced road wheels, no return idlers) are better suited
for high speeds. The closely spaced interlocking road wheels of the German
designs would be prone to damage if a rock gets wedged in there at speed.
> but I do want to beat Steve's T040, "fastest tank in the hobby".
A worthy goal!
PS: For those that haven't built a tank yet. Please don't start something
as complicated as the Cromwell for your first try. It would be very easy to
get bogged down in the many details of such a design and eventually just
give up on the project. A basic design is challenge enough and besides, you
can always sell it later and build your Cromwell killer with the experience