My mm is getting hot....I would like an opinion or 2

[magman]

It has been thermal-ing after only 10 min....however, I am running in very soft sand w/paddle tires on rear and 2.2 Gladiators on the front.

start power.....med.
punch control..10%
timing............ 2
lvc..................3.2 on a 3s batt.

mm esc w/ccbec
motor 1509 TeknoNeu 3300kv

stock spur w/a 17 pinion

I am not getting excessive wheel spin due to the paddles on the rear...so I am thinking it is a gearing issue..opinions?

[emaxxnitro]

do you have a fan on it?

[magman]

No fan...I would like to run w/out if I can, but, I know they do help

IMO....you are thermalling because you are running in sand, it will put more stress on the motor due to the loss of traction

[emaxxnitro]

yeah the motor is maxing out.
a fan really helps the mm work with bigger motors. imo

[jsr]

Try increasing the punch control (less initial punch). More punch (i.e. less punch control) requires more initial current.

[magman]

Yeah....in sandy areas I should mount a fan to help w/temps. I like to run in sand pits behind work where there are 25' piles to climb and jump over. So, I can see that the sand w/ wheel spin will cause the prob.

What fans will mount right on...any ideas?

[magman]

Originally Posted by jsr

Try increasing the punch control (less initial punch). More punch (i.e. less punch control) requires more initial current.

I will try that as well and see...thanks

[emaxxnitro]

this screws right into the fins. its just the right size
http://www3.towerhobbies.com/cgi-bin...?&I=LXKKN0&P=7

[magman]

Originally Posted by emaxxnitro

this screws right into the fins. its just the right size
http://www3.towerhobbies.com/cgi-bin...?&I=LXKKN0&P=7

many thanks!

[lincpimp]

I would try running the same size tire all the way around. I bet your center diff and motor are getting a workout with the mismatched tires...

I would also drop down a few teeth on the pinion...

[magman]

Originally Posted by lincpimp

I would try running the same size tire all the way around. I bet your center diff and motor are getting a workout with the mismatched tires...

I would also drop down a few teeth on the pinion...

I left the Glads. on the front for better turning..but, obviously, it its making things worse. This weekend, I will drop a tooth or 2 and try again

I am also going to try a little thicker center diff fluid to see if that helps as well

[blueb8llz]

what rc is this on? have you tried using rib tires for front? they are better than glads.