The Novak fits fine. The picture attached is how I set up my ZX-5 with the GTB. No room for the fan, but it doesn't matter. The system shuts down at 127°C, and I've never seen temperatures above 68°C on the heatsink... even after running for 10 minutes straight!
I'm looking forward to seeing how the LRP sphere comp. runs with the latest motors. I know everyone sez they are fast, but the Novak is fast too. I'd just like to see one in person so that I can compare it to the speed of the Novak. I do like it though how the LRP motors are the same size as the brushed motors. Novak's motors are longer and they have the sensor wire hard-wired into the motor. I believe LRP's are plugged in? Nice feature. Also, I've noticed the LRP motors have the hash marks on them for timing changes? Have any of you changed your timing yet on your LRP motors? Is it really noticable? What about temperature changes to your speedo (since the motor really doesn't heat up). Anyways, I've been running the Novak 6.5 motor in my ZX-5 as of late. It's really strong. More than enough torque, but top end lacks a little bit for my liking. I'm sure though that I've got some room to play with on my pinion since the speed control is not getting hot. My opinion (and others I race with) is the 6.5 looks like a very strong 12 turn. The 5.5 looks like a strong 10 turn. I'm assuming the 4.5 would just look like a 9 or 8. I don't know the speeds of the LRP motors or how many they have released. What are your opinions on their speeds?