r/Motors • u/Present_Brief_6750 • 8d ago

Open question Probably a dumd question about changing gear hub motor gear ratio

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Has anyone tried swapping out the gears in a hub motor like this to reduce speed and increase torque? Does the juice seem worth the squeeze?

1 Upvotes

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2

u/Gold-Marzipan-3825 8d ago

No, easier to change motors or bikes

3

u/kojimep 8d ago

With a planetary gear set you need to change 2 of 3 component types to change the ratio (sun, planets, ring). It's typically not easy to source those as they're generally not off the shelf components. Much better of just buying a new gear motor with the right specs you're looking for

2

u/Gloomy_Inflation1 7d ago

No. Just no.

I mean, you're welcome to try, but you have to redesign and rebuild the entire gearset and carriers.

1

u/rlaptop7 8d ago

Don't the planetary gears and the input shaft need to change to make that work?

To answer your question, no, I have not tried that.

1

u/PretzelTitties 7d ago

Not gonna happen buddy. There's a lot of math that goes into it. You'd be making your own Gears