Hello All,
I have probaly a simple question.
When they say a Gearbox D what is the ratio?
Or is it a Gear Size D?
Thanks,
Cole

Hi Cole -

The definition of a "D" gearbox ratio depends on the gearbox model.

For example, just within the GWS gearboxes, you have:

GWS IPS "D" gearbox = 9.66:1
GWS EPS "D" gearbox = 6.60:1
GWS EPS-400C "D" gearbox = 3.00:1

So it depends on which line of gearbox you are referring to, even among a single manufacturer. Some gearbox makers don't use a lettering system at all; they just list the ratio.

- Jeff

Also the letter is molded on the large gear, so you can go to the chart and find the ratio of the box
Happy Flying
Bob

the reason i ask is because im following an diagram for i guess what they call a Nasty and it sugest a 350 motor wiht an d gearbox so i just looked up stuff for the motor and couldnt find anything that said D they are all 1:4 and stuff like that and i didnt know the ratio and stuff.
Thanks,
Cole