Originally Posted by Mabuchi540
I was out of RC for 12 years but I remember those days too when mod would run 1700mah packs (showing my age) and I don't understand why 5 min should be any problem for a pro-stock either?
Just a guess... maybe the motor (esp stock motor) these days are VERY different to how the motors were designed 12 years ago?
Today's 27 stock motor are designed for 3300 batteries, run time is never an issue (when using 3300 batteries) so efficiency is probably NOT something they concern the most when designing the motor>
Anyway a few people have already tried and almost everyone can only get the car go for 3-4 mins before it dumps, so to make it last 5 mins, a lot has to be done. But then the 27T stock motor's timing is fixed and there is only so much we can do to improve the efficiency/run time probably softer spring may help or maybe 1-2 other tricks but all of these will DECREASE the speed...
so yes it maybe cheaper to switch to prostock but why do we want to move from stock (which is silver can for those who is not from NZ) to prostock (27T stock) if we have to limit the motor and result in speed similar to/same as silver can? the maintenance cost of racing in prostock class is much higher than stock (silver can). Speed is(was) probably the biggest/only reason why people want to move from stock -> prostock.... so if there is almost no speed difference between these two class because we have to "drive slowly", i personally don't know why someone would still want to race in prostock class.
i was going to race in prostock next year but it looks like i may have to stay in stock next year