Bartech

Hi everybody, i'm an italian guy and i'm sorry for my incorrect english, i hope that it is understandable.
I have an EDAM ESpirit VDS 200mm, but i don't know hot to calculate the gear ratio, on the manual i haven't found anything, only the pulley dimension.
Can i calculate the final gear ratio with only those info?
On that car i use enneti foam Tyres for "superbarchetta" i will buy a lathe, do you know how many foam can i remove from the tyre?

Help me please!!!!

PAPOSWING

iTrader: (18)

There's a site called gearchart.com

You can use that..
Or you can calculate your ratio.. Example:

98t spur devided by 38t pinion time the internal ratio of you Rc car..
In other words:
98÷38x1.94= final drive... ( 1.94 is the internal of my Tamiya car.),