brushless 1/5 4wd conversion about to begin! couple questions. - RC-Monster Forums

Ryu James · **will know shortly -** 09.29.2009, 03:34 PM

i am heading out to the garage at this moment to get everything hooked up and do isolated tests. i will report my findings shortly. over and out.

Ryu James · 09.29.2009, 08:19 PM

so it took me a bit to get everything wired up but just tested it RTR with the 12t pinion and i was totally surprised. i thought because i have the esc in that enclosed box that there was no way the temp would stay low. plus i have wires galore in there, my rx and my 2s battery mounted on top of the box all contributing to heat. i do have 2 fans mounted to the box. one on each side of the esc aluminum pipes for direct cooling. but only one of the fans was working. so i ran it anyway. after 5 minutes all the temps were the same: 85* for motor, batts, esc, and bec. i ran another 5 and motor was 95* batts 90* and esc 87*. i ran another 10 minutes and motor was 100*, batts 90* and esc 90*. after that i was pretty convinced that things are gonna work out. i am now gonna try the 15t and see how things hold up cuz i like the 15t performance much better. based on what happened last time i think its gonna work but i really think a 14t pinion would be the sweet spot. with the 15t i expect the motor temps to go down about 5* and esc to go up 10-15*. we'll see.

aqwut · 09.29.2009, 11:21 PM

Quote:

Originally Posted by Ryu James

so it took me a bit to get everything wired up but just tested it RTR with the 12t pinion and i was totally surprised. i thought because i have the esc in that enclosed box that there was no way the temp would stay low. plus i have wires galore in there, my rx and my 2s battery mounted on top of the box all contributing to heat. i do have 2 fans mounted to the box. one on each side of the esc aluminum pipes for direct cooling. but only one of the fans was working. so i ran it anyway. after 5 minutes all the temps were the same: 85* for motor, batts, esc, and bec. i ran another 5 and motor was 95* batts 90* and esc 87*. i ran another 10 minutes and motor was 100*, batts 90* and esc 90*. after that i was pretty convinced that things are gonna work out. i am now gonna try the 15t and see how things hold up cuz i like the 15t performance much better. based on what happened last time i think its gonna work but i really think a 14t pinion would be the sweet spot. with the 15t i expect the motor temps to go down about 5* and esc to go up 10-15*. we'll see.

why not run 12S with the 12T... ? or would that ruin your whole battery configurations...

Ryu James · 11:28 PM

as before the 15t just performs so much better. it is so much quieter than the longshank 12t pinion, has more punch off the line and more top end of course. it is super smooth. it was a balmy 70* today and temps with the 15t were great. again, after moderate running the esc hadnt broke 95* so i rallied it pretty good for about 7 minutes doing donuts and drifting and taking through the grass at high speeds. i checked temps and esc was 105*, motor was 114* and batts and bec were 85*. i am gonna stick with the 15t and although i know i can get the temps higher when i get out and run it hard when i have brakes i am confident things will stay in the ideal temperature range. i am very happy. for the most part it performs like my truggies in just about every way but the steering servo has hardly any throw at all. it sucks. i think i am gonna rig a way to just use my JR9100HVT for steering. it has way more torque than the hpi large servo and a lot more throw also.