Gearing help

What pinion should I run with the tekin RX8 and 2050kv buggy motor? I am running a 48t spur on a losi 8ight,running 4s. Right now I am running a 16t pinion and the motor is getting waay to hot (185F). Am I under or over geared?

What pinoin should I run? I cant change Motor timing because I don't have the hotwire.

[TekinTeamMgr]

You're a bit tall for a 2050. Try the 15.

[Bondonutz]

Use this to calculate your max top speed and will help determin proper gearing.
http://www.scriptasylum.com/rc_speed/index.html

[SpEEdyBL]

Well it probably is the timing that is the problem, but try lower gearing first. Even a 14 tooth w/ the 1900 is still as fast as the nitros and a 2050 will be even faster. A note on timing... Using 0 timing with my 1900, I can use ANY size pinion gear up to a 20t in my 8ight and temps will always be less than 140 at the end of the run on 4s lipo.

ran 4s 15t pinion for 7 mins with holes in body and 185F, Ran 17t pinion for 7 min and temp was 190F. Timing is zero

[whitrzac]

Originally Posted by Brushless Moose

ran 4s 15t pinion for 7 mins with holes in body and 185F, Ran 17t pinion for 7 min and temp was 190F. Timing is zero

check for binding, and make sure the gear mesh is right...

no binding, mesh is fine!

[FG101C]

That motor is awesome in the Losi 8ight buggy, if you replace the buggy 40/13 ring and pinions with the truggy 43/10 gearing. The 40/13 just makes the gearing to tall, imo. This is from experience, on a TRACK in RACING conditions.

[Metallover]

Driving style could be the issue. Are you sliding around in loose dirt, powering through grass, or never letting the throttle trigger breathe? And to make sure, you aren't running a big heavy monster 8000mah+ lipo are you?

no, I am driving the buggy easy around a track. I am running 2 4s 3000mah 30c packs in parallel. I ran that with the MMM 2200 combo for 45 mins continuous with no problem, and now I cant run it with the tekin for 7 mins without overheating!

[E-Revonut]

What are you running in your center diff for fluid? I had been running straight 10k and temps where a touch higher than I liked, I changed the fluid and put a little bit of 50k in with the 10k and my temps are about 10* cooler. Although I didn't think I was unloading the front a lot apparentlly it was enough to raise the motor temps.

[bdebde]

If the MMM combo worked fine, why switch?

because the mmm burned up. I am running 15k in the center

[TekinTeamMgr]

Originally Posted by Brushless Moose

no, I am driving the buggy easy around a track. I am running 2 4s 3000mah 30c packs in parallel. I ran that with the MMM 2200 combo for 45 mins continuous with no problem, and now I cant run it with the tekin for 7 mins without overheating!

Something sounds off here. 6000mah should not get your 45 minutes with either of these setups.

2200kv motor at best would see 20 minutes on a buggy I bet at least.

The temps say you're geared a bit tall. Do you have a hotwire?

yep, I have a hotwire, and the 45 mins I speak of was running back to back. even doing that temps were under 150, but now with the tekin, I cant go 7 mins without it overheating!