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Our Answer

The stock SC10 RTR with a brushed motor is going to be a little slow. Most people are running brushless motor with LiPo battery packs, which will get your SC10 over 30 MPH. If you are running against people with a brushless/LiPo setup, you will be a big disadvantage if you have the stock brushed motor and NiMh packs.

For more info, check out these posts...

SC10 Brushless Motor Setups

LiPo Battery and Charger Setup for SC10

SC10 Motor Gearing