Originally Posted by hotcar
Been reading a lot of the posts on your guys thread and haven't posted anything on it. I am an owner of a 415 MSX car and have a question. I have a 13.5 motor and a 4300 motor. I am currently running a 100 tooth spur and a 36 pinion. What I would like to know...am I way off on my gear ratio? The car seems to be pretty decent in speed and power. I am running the nitrite arm because of heat, and it only runs around 109 degrees. Keep in mind where I race in MI I am the only 415 car in a group of T2s and 007 cars. I am holding my own but I am not sure I am geared right. If anybody can tell me what I should gear either of the motors I would appreciate it. The Novak website has been no help. The gear ratios for this motor must be a big secret! So any help would be appreciated...thank you.
Hotcar
I am running Rubber Tires on a large indoor carpet track approx 48 x 96 running a Novak GTB and 13.5 with a sintered rotor (runs about 20 degrees cooler than the stock nitrate arm)
I'm Geared 91 x 44 and this thing SCREEEEEM's. Almost as fast as my 4300.
That's a 42.55mm or a1.675 inch roll-out. (4.65 gear ratio) Temps out @ 144 degree's
