Blown 4.5
 

Hi
I just ran my 4.5 for the first time at a big meeting, it went really well. The next day it ran it, it stopped towards the end of the straight. I pulled it apart and it seems that the kevlar wrapping started to unwrap it self and part of the magnet has blown apart. This has also happened to a fellow racer at my club. What could I do to stop this from happening? and is the replacment rotor any stronger??.
Thanks for any help, Drew.

Over heating casued by improper gearing most likely. Send it back to Novak for repair/replacement.

My gearing was 10.2 and the motor never went over 70 degrees C. (159 degrees F) The operating temp for the system is 160 to 180 degrees F.

Seems like a correct gearing and op temp.

Just sent an email to novak informing them about this, and send your 4.5 back for a replacement. They have the best customer service I've seen. :nod:

Maybe a bad crash, a bad jolt perhapes ?


I`v seen a few blow that way...

No I haven't crashed with my 4.5 before.

I have just sent Charlie an email.
Thanks for your help, Drew.

I'd lay my money on shoddy workmanship. Par for the course with Novak.