Originally Posted by
Cpt.America
No way. Maybe the first gen 17.5s that came out 5 years ago or so, but not today.
Agreed!
Ive run a Reedy 17.5 in my B4 and it is a rocket with the right gearing.
Also, most 13.5t brushless motors are in the realm of 3000-3300 Kv. Looking at super stock classes, 13.5 brushless motors can run similar lap times to mod motors with a pile of boost.
Go brushless. Way less hassle. No more cutting brushes, lathing armatures, and dyno'ing.
Check again the rules for your track, because 17.5T is the most common off-road stock class. Several companies make really affordable stock brushless systems. You will have to drastically alter your gear ratio, because the brushless motors don't really come alive until they have a certain amount of load on them.
To give you an idea, I found the ideal gearing(for my local track) on my B4 to be 32 pinion, 69 spur. Running a reedy 17.5 on an LRP SPX esc.