I see no reason not to move to Lipo's once they are 100% idiot-proof, I'm looking forward to using them purely because of the lighter weight. Quicker acceleration/direction change, less wear on things; including tires, whats not to like? They will make the cars handle differently but thats nothing a change in setup won't fix, less pack and softer springs would be all thats needed. Adding weight to a car to make it handle properly is wrong if you ask me, if you're at the weight limit and you are having to add weight to the car either your setup or the cars design isn't right.
The extra voltage is a bit of a problem and would mean it wouldn't really be fair to run Lipo's and NIMH's togeather. Though there's nothing stopping us making the cars a bit of a handful to drive with NIMH's and brushless currently, especially in 2wd.
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