RC-Monster Forums - temp problems,help pls

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temp problems,help pls

hi guys.i was running my cen arena truggy with MMM 4s 9xl 47/14 gearing with no temp problems,was so happy with that i needed to get a neu 1515.the only one i could find was a used 1515 1y on ebay so i did get it.with the heat here in socal(97d) i couldnt stop myself from testing it yesterday.very satisfied with speed/power.ran it for 8-10 mins.the checked temps 115batts,140MMM,187neu!!my 9xl never got that high!do i have to gear the 1y differently?or did i get a bum motor?

but factors are i was so amazed with the neu power that i was going full throtle a lot on grass n dirt(baseball field),donuts and everything,never ran the 9xl with these outside temps.

any opinions would be greatly appreciated.thanks

Quote:

Originally Posted by cornolio (Post 184356)

it could be the outside temps here in Phoenix we are getting temps pushing 115 during the day and during the summer I will only run my Revo early in the morning...at that time it is already pushing 90 degs...because your ESC and batts temps were a little elevated...try running yout truggie when its cooler out and see if there is a difference

Try a 13T pinion. The Neu 1515/1Y has a Kv of 2200 and the 9XL is at 1660 or so. You could also try different timing on the MMM. A 2 pole Feigao likes the low timing or 0 degrees in other controllers. Go with normal and see if that helps.

thanks for the tips.ill try that today

Quote:

Originally Posted by cornolio (Post 184430)

thanks for the tips.ill try that today

One rule that I try to use depending on motor of course is if I go with a higher Kv, I will always go with a smaller pinion to match the speed and keeping AMP draws about the same. If you are really into speeds over 50mph then it's a different story.

with my setup I tried gearing a little higher to help keep the front end on the ground...:-)

i already adjusted the gearing.i used 46/13,wabash 23mm mulcher with the 9xl.
im now using 14/47,LPR bowties NEU 1515 1y .thats a lot already

i gotta say,the difference between 9xl and neu is night and day though