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Old 04-12-2012
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LongRat LongRat is offline
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Join Date: Aug 2011
Location: Bristol, UK
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Quote:
Originally Posted by mark christopher View Post
More rubbish
Mardave class was allways 4 cell nicad,nimh before it went to gt. Not 6 cell which would be 2s.

I did a 2 day national on one 1s cell, no performance change. Full entries of 1s cars at nationals shows 1s is the class...
Sorry man but 4 cell NiMh does not equal 1S LiPo. There is a +30% nominal voltage difference (4.8V/3.7V), which is the cause of the problems on 1 cell systems. The voltage difference between 6 cell NiMh and 2S is nominally only +3% which isn't a problem at all. The huge current and therefore significant voltage sag seen in 1S only compounds the problem, as Mardaves ran low power motors that never asked much of the 4 cell NiCds this issue never arose there.

These issues will not kill the class, it is too much fun to race for that. But you'll end up with a fixed elite doing Nationals with much less penetration from club racers wishing to give it a go. None of us have the full picture on what systems are used nationwide in GT12 clubs, but for sure there are many, many people using 2 cell LiPos.
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