Originally Posted by glassdoctor
I ran my 4600 in the 22/81 to 24/81 range even on small indoor tracks....
As different as brushless motors are to brushed motors, castle systems are as equally different when compared to other brushless systems. The Mamba Max puts out so much power that if geared right, the 4600 can even make a 4 wheel drive rip! I've been running one in my D4 for about a month. Definitely a great start is the punch control but if that's not taking a chunk out of the speed like you're looking for, you're going to have to gear down.
What's the issue you're having with the castle link?