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Old 07-25-2003, 01:55 AM   #1
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Default Performance drop!!

hi, my fren had a Xpress belt-driven... he felt that the car acceleration is drop compared to last time, the top speed still around the same... any1 know whats the problem will cause this happened?? it is only 2 weeks old...
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Old 07-25-2003, 03:22 AM   #2
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it may be the battery falty
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Old 07-25-2003, 03:53 AM   #3
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depending on what motor he was using it could be
the comm/brush wear.
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Old 07-25-2003, 04:05 AM   #4
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Quote:
Originally posted by Disney
it may be the battery falty
had tried on other battery... still the same...
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Old 07-25-2003, 04:09 AM   #5
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Quote:
Originally posted by Losi_runner
depending on what motor he was using it could be
the comm/brush wear.
everything r original... except the tyres... only 2 weeks old, motor brushes weared??
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Old 07-25-2003, 05:09 AM   #6
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Motors need maintenance to keep running at their best. Minimum is flushing through with motor sparay, and using a comm cleaning stick on the commutator and brushes. If the motor is rebuildable, a commutator skim on a lathe, with new brushes, will normalyy make the motor as good as new.

Other possibility is a mechanical problem, something may have got trapped in the drivetrain, come loose, or been damaged.
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Old 07-25-2003, 06:56 AM   #7
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could be any of:-

-motor needs maintenance
-oil in motor bushing?
-sticking brush in motor?
-car's bearings have gotten jammed, needs servicing
-something stuck in a belt
-connection/contact problem
-charger not charging your batteries fully
-batteries have gone to sleep (especially NiMH)
-bent axle?
...
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