Ecyclist said:
My reducer is already strong enough for 80mm motor, but I'm planning on a couple changes to make it better. At this point the ratio is 19:1. I machined it all excluding bearings and pins. I built other one that is 16:1.
You can visit my thread for details.
Yes, my reducer is based on the same principle, but is much better.
My reducer at no load is using about 100 W of power.
Tangent is using $700 Astro Flight ,very efficient motor, and is using at no load about 350 W.
This is a clear sign that something is wrong with Tangent. Can you guess what?
Obviously, you have technical skills and you should have no problems with building high quality and compact belt reducer.
The most important part for you will be to make it structurally rigid and running true.
I reworked GNG belt drive kit and have it still running strong on my wife's e-bike.
I'm looking forward to seeing your build developing.
Good luck.
Very interesting Ecyclist.
I plan to have the lowest possible losses for my project.
Rewound Maxon EC 90 flat + 12:1 Neugart reducer + 36/17 chain reducer draw only 600mA at 24V or about 15W with no load.
I wanna use the motor only to help in high slopes.
That will allow me to bring safe low weight battery packs.
Motor + reducers + ESC + Battery Weight = about 2.5kg.
Thierry
