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Gearbox Question?

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Old 05-02-2007, 09:19 PM
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Cole_lol
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Default Gearbox Question?

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
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Old 05-02-2007, 11:13 PM
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jdetray
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Default RE: Gearbox Question?

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
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Old 05-03-2007, 08:28 AM
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soarhead-RCU
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Default RE: Gearbox Question?

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
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Old 05-03-2007, 05:33 PM
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Cole_lol
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Default RE: Gearbox Question?

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.
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Cole
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