On 26/04/14 13:09, Dave Plowman (News) wrote:
In article ,
The Natural Philosopher wrote:
Oh yes it does.

You risk of course burning out the windings doing it, because you are
WELL over the peak current its rated for and it WILL get bloody hot of
left doing that for any period, but for an emergency stop, yes its
possible to do a lot more than normal peak torque. AND in the end you
are ONLY talking about torque up to tyre slippage. Once you lock the
wheels, the torque vanishes, and you end up in a partial slip mode.

The trains that use that system have the disc brakes there largely to
achieve the final stop, but not to absorb the bulk of the energy.

FFS, a train takes ages to stop. Lack of friction between the wheels and
track. Nothing like a vehicle on a road. Which can better 1G when braking.

straw man.


--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.