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tc3_racer_001
RC-Monster Carbon FIBRE NOT FIBER!
 
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Posts: 701
Join Date: Apr 2008
Location: Brisbane, Australia
09.21.2008, 06:40 PM

well im not the greatest driver, decided to stick myself in with the lowest (C's) 1/8 nitro buggys and came 3rd once and 4th three times. not bad considering it was the first time on that track.

thenm plenty of people were having issues with their engines HAHAHA and left.

by the time the final round came around we decided a 15 minute A and B buggy race would be fun (usually 6 minutes). i decided i may as well try and see if i could strech 15 minutes from it, and charged the battery once again. when i looked at the printout, i was starting in first place. then another electric guy was annoyed cause he couldnt race the 20minute A final let alone the 15 minute one, so when he was put into last place in the B final he wasnt happy. 45 minutes later, they sorted it out and thankfully my battery could finish charging!!!

he was running a novak and his esc came off the track @ 75C, batteries were cheap ebay ones, and were 58C and his motor with aftermarket heatsinks (plural) and fans (plural) were at 75C after a 6 minute race. haha he managed to thermal it in the last qualifier 5 minutes in.

in the shade under a shelter shed/open garage it was 33C and in the sun it was over 50C. with a nice gentle breeze cooling us off.

anyway, the buggy performed reasonably well, i was running a 13t/46 combo and never really hit top speed. loved it how i overtook the vspecs and navarossis down the straight!! (they were not impressed :P)

after 6 minutes i came in to check motor temp, and it was hot but still within spec so i kept going. 2 laps later (long track, record is 48 seconds, i was running 55's) i came in and it was only a few degrees hotter (66C) so i took it out again, next temp was 76C!!!*%$( i let it rest for 20 seconds then took off again, took it a bit easy around the track but not exactly slow! came in again and it was 65C? weird. anyway i was a bit comfused but continued racing and the temp after that was 68C. so i finished the race and it was at 65C.

can anyone expain this fluctuation in temps, and yes they are HOT but how can i fix it? i driled out holes and cut the side window and folded it out to create a scoop thingy.

im pretty confident it didnt go over 80C = 176F which is top of recommended temp range, and 200 (93C) is max before damage right?

i will drop down to a 12t and see if that makes a difference. im probably on 1/4 -1/3 thottle the entire way around the track and WOT down the straight. When driving around my place in 20 minutes (in the shade though?) it never got above 145F (which is good) the only difference is that im ALWAYS (90% of the time) on the throttle, whereas in my yard its lots of juice then coast then juice then coast) probably a 50% duty cycle....


any suggestions? i was running (as an experiment) 3-30-5 in the diffs (F-C-R) and it was suprisingly good, i need more steering on power though. ( at slower speeds)


long post!!


hyper 8.5 pro SOLD!
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