Brushless Gearing! Help!

[tc2k]

Ive bought a 6.5 motor that isnt quite here but not sure If I can run the stockm spur (81 teeth) with a 17 tooth pinion, does anyone have this combo or does it not quite reach?

[LEGEND]

josh, when i race my lrp 5.5 at the club i normally race an 81 spur with either a 18/19 depending on the track, But i turn my throttle curve to about 30-40 so it doesnt get to warm:D

[tc2k]

Does the 18 fit well. Im thinkiing 17 is a bit low and 18 would be about right. Does the 18 tooth get far forwrd enough to mesh good?

[LEGEND]

What i found is that the lowest you can go with an 81 spur is a 17 tooth pinion. A 16 just wont move far enough:)

[tc2k]

Cheers, think Ill go with the 18. LRP/Nosram say 12.4 for a 6.5 in 2wd and with the 17t it would be 12.39. But lookign up people are using 20t pinions on 5.5s! So i think a 18 would be about right for me. Speed wont be an issue if you saw my car at Bury, I need some! :D

[craigosh]

I've got a 6.5 with a 19tooth pinion on the 81 spur.. no problems. But i am running lipo so it's got the power to push it..

[DNC]

just got a LRP 7.5 wot pinion should i run wiv that??????

[tc2k]

in a b4, Id say 20/81

[Rob]

Yep about 20/21.

[Chris Doughty]

LRP 6.5 - 20/84 (if I had to use an 81 spur I would use a 19 pinion)
LRP 7.5 - 21/84 (tooth lower with the 81 spur)

I like the 84 spur because it allows the motor to be in a more 'normal' position compared to brushed setups.

[Christer Rasmussen]

I just got a LRP 7.5 and had to put in a 23/81 on the B4 to keep track with the 12x1 Brushed motors.
I'm going to the Belgien Grand Prix in two weeks time. And think I bette get an 6.5 for it to be fast enought on the high grip track.

[b4rs]

slow is fast mate. take it easy with your setup as it is, and you wont crash as often as those 12x1 loonies :):D

[Col]

...12x1 loonies...

I run a 10x1 in my B4 and I'm as sane as....





Northy!;)