HRK 159.94 7%OFF | Ratio 3.6: 1 / 4.25: 1 planetary reducer 56mm Round input flange for DC motor with motor shaft diameter 6mm or 6.35mm or 8mm
https://a.aliexpress.com/_m0rdtCR
Its very difficult to say whether changing the bearings would work for you. Its not optimal in any case. I would recommend to use a flexible coupler, such as a dual disk coupler and then use two bearings to support the output shaft. One of them should be able to take axial loads. Maybe use a tapered roller bearing + normal deep groove ball bearing. That should provide a mechanically robust setup.
Are you seeing 18000 RPMs using the VESC tool or is that a calculated max RPM?
What types of RPM’s are people seeing on their setup? Mine is nowhere that high.
I dont have VSEC…
18000 is caclulated value, no load.
Woho.
Im lucky.
I had this coupler im my stash, but wasn’t shure what shaft bore was.
Im lucky it is 12mm fits perfect.
It is steel :).
Just need to replace srews…
Did you end up using this gearbox? Did you go with another? I am looking into a build and am hoping you can share your experience.
Thank you,
Switch
Hello.
Sorry my bulid was a little bit postponed. Corona and all that stuff.
Yes i am still planing to use that gearbox for my setup, and cant give you any opinion coz i didnt do any real test with it. Motor and propeller are spinning fine without no load.
I dont know if that informtion helps you in any way…
I ended up getting the gearbox and it works fine
Hy.
Thanks for update.
I didnt test mine still.
Did you finished your foil and done some tests in water?
Got the same gearbox as a backup setup, going to test it soon.
I had to separately buy " 1M 15t " 8mm bore spur gear for everything to sit flush.
Marked and drilled the cover plate by hand
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Hi, and what are you going to drive with this system? Thanks
You don’t remember the old e-foil geared setup? with the alu tube? The gear is for torque and it drops your KV to about 100kv in my case, I plan on using it on my efoil or my inflatable boat, I’ll put everything in aluminum tube, 3D printed prop, then test it in the swimming pool under load a couple times check temperature/wear/tear etc…
Sorry, I forgot. But I’ll look it up later.
Nice.
Will you olace propeller directly to gearbox shaft?
Please give me update when you thest this setup, im realy curiouse how it works.
My bord will be ready to test in 2 month.
Hello.
Did you test your setup?
I didnt have time to test mine.
Price is only 1/10th of Neugart. Curious if it will hold. Keep us updated!
I hope it will. all gearbox looks nice and robust.
Hi, once you’ve modelled the propeller in 3D CAD, I can help you refine the hydrodynamic shape. This will either increase speed, or increase battery life, or increase thrust, or trade-offs thereof.
I made few models with this software, can you help making this better? I will send you my models.
Hi, I can’t promise anything. It is ideal to optimise the propeller at the very end, when the motor system is complete, functional and reliable (e.g. thrust bearing in gearbox, watertight …).