could you post a vid though? depends on what brushed motor you run...there are brushed pletts that would give some brushless motors a run for their money...depends on a zillion and one things, and mine at least still needs quite a bit of fine tuning. I think the graupner silver bullet was intended to be run on a 540 Dr. Speed brushed motor, or a small outrunner (that'd be interesting to see!), so my guess is you could still get that hull cracking with a brushed setup (assuming NQD copied the silver bullet well that is, and allowing for the obvious differences between GRP and plastic)...