I get similar temps with my XL's 5.9. Around 270-280. Runs really strong and still has a nice smoke trail so I'm thinking this is just a good temp for these motors.
Well you could dip them in paint... or maybe some of that plasti-dip type stuff? A plastic or rubberized coating would probably last much longer than paint.
Exactly. For the little bit more money for the XL you get the 3-speed, bigger motor, bigger truck, etc! I'm really happy with my XL. Though as mentioned above, the standard sized Savages seem to handle better (stock for stock).
I found the specs, I figured I'd post them here in case anyone else is interested.
HPI SF-5
Torque: 8.9kg/cm @ 6.0v
Speed: .20 sec/60 degree @ 6.0v
Hitec HS-5625MG
Torque: 9.4kg/cm @ 6.0v
Speed: .14 sec/60 degree @ 6.0v
So it looks like the 5625 is a decent upgrade, slightly more...
OK actually I just noticed the specs for the HS-5625MG are actually 7.9 kg/cm at 4.8v and 9.4 kg/cm at 6v. I'm guessing HPI is quoting the spec for the SF-5 at 6v, right?