Don't know. My M26SS runs hot (average 250F-260F) in my aftershock and I hate hot engines... hard to start, run funny... but it has decent power.
So I thought I'd throw the axial in that's been sitting on shelf since I sold my mammoth. It seemed to run great in the mammoth. Plenty of power, lots of smoke and ran cool around 220-240. That was in a relatively low geared single speed mammoth (center diff). I put the stupid thing in the aftershock and figured I'd have a hard time getting the front wheels out of the sky... no joy. I had a hard time keeping the temps down (265F+, once at 290!) and power is non-existent.
I just read a post at another forum that made me think though. The mammoth had an in-tank stone filter. The AS doesn't and the big fat in-line filter that came with it had a torn seal out of the box. I replaced the in-line with a little in-line that I had from my t-maxx days (small block). The thread I read was talking about a small filter on a big engine possibly causing lean issues that the guy couldn't tune out. Makes me wonder if I'm having the same problem. The M26SS runs hot, but I don't care since it's a cheap RTR engine. The axial is in pieces on my bench as I had torn it down looking for torn seals and whatnot.
I found nothing that would cause my high temps and poor running. I had just replaced the front bearing and sealed it all up with RTV two days prior to running it just to prepare.
Maybe I should start a new thread... I feel a bit stupid since I've had so many different rigs and engines in my 6 years of being in the hobby to ask dumb questions though...