B4 gearing help?

[Speeed Freak:)]

Have a new, well 2nd hand B4, I've put a 9T in her but doesn't seem to fast on a 21 pinion so changed it to a 23 and better but still not great, had a look at the spur and it's an 87! Interestingly the car popped the front wheels up with the 23 pinion and not the 21? I would of thought it would of been the other way round?

Would totally changing the gearing around have a better result? I.e quicker?

Or do I chuck a 6.5 or 5.5 in?

[Richard Lowe]

Originally Posted by Speeed Freak:)

Have a new, well 2nd hand B4, I've put a 9T in her but doesn't seem to fast on a 21 pinion so changed it to a 23 and better but still not great, had a look at the spur and it's an 87! Interestingly the car popped the front wheels up with the 23 pinion and not the 21? I would of thought it would of been the other way round?

Would totally changing the gearing around have a better result? I.e quicker?

Or do I chuck a 6.5 or 5.5 in?

9.5 in a B4 you should be somewhere around 24/78 really possibly higher, depends on the brand of motor.

In my experience with brushless you just get more power in general the higher you gear it (up to a point obviously)

[lardy37]

hi,as far as i am aware the 87t spur is kit standard on the T4 so it looks like who ever you got it from may have damaged the proper one which i think standard is 81t for b4.1 so they fitted the 87 just to get it going as the kit comes with both so get a smaller spur that should sort it

[Dudders]

Andy,

In my old B4 I have a 6.5t and 21/84.

I'd stick with the motor and put a 78 spur on and a 23 pinion

Neil

[Speeed Freak:)]

Thanks guys!

[alex97]

i have a 10 turn 81/22 that is fast with 7.4 lipo