yea they are warrantied for life so its a good thing about it

I realize this is an older thread, but I recently cracked a (new replacement) rotor in my Velineon after only 2 packs (3s, 5000mah). I'm rather puzzled how this could happen running it within spec (temps, rpms). It was in a stampede geared 21/86 with mashers.

I noticed the balance epoxy had come off one end of the rotor and smeared inside the can. Could that have jammed and caused the crack ?

Honestly?

The velinion is basically a feigao 540s there rotors are well put it nicely not as precisely made as more expensive motors and thus sometimes you get a rotor that will do 50k rpm without grenading sometimes one will go when not even going over 40k rpm.

Someone mentioned it wasn't worth putting a neu in a rustler but honestly i consider that to be a snobbish comment as in my opinion investing in a high quality motor is just that an investment assuming you look after it.

I still have a hacker c40 8s that i got back in 2002 and its as good as the day i got it because being a high quality motor i could always make sure it wasnt overheating and it could take the rpms they stated it could.

Yeah, it was rather shocking to say the least, esp since I've tons of runs on mambas and velineons before. This was the first time to replace a rotor rather than just getting the whole motor. The inside of the can was smeared in a colored power, the same color as the "stuff" (epoxy ?) put on the end of the rotor for balancing. The stampede has mashers on and with loading, geared at 21/86, I don't think I was much past 30K in rpms.

This was on a dirt & and thin grass surface, so not even talking speed runs per se' . I have since put in a new velineon (while this other is into traxxas), running the same config, same area and it's holding up fine (10 runs - crack just happened saturday). I am interested in getting an alum tranny so I can stop reading temps every 4 minutes and put my mind at ease. Kinda paranoid now. LOL

hey on the medusa motors, I was testing out my new kokam h5 4000mah 3s pack after 20 minutes i was getting bored so i was pushing it hard trying to make the pack dump lol i pulled the car up there was a twig in my motor cooling fan i was like crap better check the motor and to touch it was just warm.

I have to say that also the efficiency of this medusa 3300kv motor is great as well i was getting 18 minutes out of my 4s a123 whereas my plettenberg extreme was only getting about 14 minutes geared for the same top speed and bashed the same.

Yeah, I'm quite happy with Medusa motors as well. It's really hard to beat the price to performance ratio.

Definitely. You pay $30 or so more for a MedUsa rather than a Feigao and you get a significantly better motor. I ran my 50mm 3300KV motor in my Rustler for a little while and it was all the motor you could need for bashing and it would satisfy some serious speed requirements as well. I'm looking forward to Mike's new clamps that will be able to plug the cooling holes but every MedUsa I've ever owned has been simply amazing for the money. I like to show off my Muggy to the guys running Neu motors in their Revos, they're surprised it's only $140.