808 gearing on 4s

[auto2]

im up to a 19 pinion and want more. (on 4s)

i put a 5s in it for fun and THAT was ( with the 19)a little too fast.lol

using a 1512/1.5y

[TDC57]

Wow that 1512 1.5y is rated for 3s and your running 4 & 5s on it, how the motor temp (?)

Your running approx:
45mph on 4s and 53 mph on 5s what speed are your looking for 49 mph (??)



P.S.
I know you (?) your on the Teamxray forum as well right (?)..

[auto2]

i have no motor temp. not even enough to want to temp it.
last race ( we have a long long sraight) the nitros were catching me .

i didnt know it was rated for 3s?
on 5s i couldnt control it on the straight. wheel spin the whole time LOL.:-)
so im gona
run over to mikes house and try a 20t and see how it goes..

yes auto2 is me on xray site.

[Patrick]

TDC57 must be thinking of the 1512 1.5d (3300kv), because the 1512 1.5y (1850kv) would still be in spec on 8s (rpm anyway).

What size spur do you use?

[jhautz]

Use the BrianG speed caluculator and target 40mph. That should be plenty for the track. Not many nitros actually getting to those speeds.

I typically shoot for right around 38mph and that seems just about perfect to me.

with 4s on that motor in a buggy 20T should get you to about 38mph and 21T should get you to 40mph. Sounds like you are on the right track to me.