Knuckles wrote:Sh*t Happens
I DEMAND ALLOY GEARS FOM CHINA!
email your local Chinese Consulate
mickk wrote:How were you riding at the times it busted. was it like up a 70 degree mountain no pedaling or just cruising?
Miles wrote:voicecoils wrote:"Aluminium anodised before gear cutting"
Miles wrote:What would be the point of creating a protective coating on the gears and then machining it off?
If you want to use aluminium gears they will need to be hard-anodised or treated with the Keronite process. The surface created by both these treatments is porous and can be impregnated/sealed with PTFE.
It might also be worth investigating the possibility of reinforced plastic gears - the new BMC motors seem to be using them.
voicecoils wrote:Got it. What would reinforced plastic mean?
One thing I thought of was having the gear pattern laser cut out of thin steel , shaving down the thickness of the nylon gears and putting the steel cut outs as inserts on either side...
dazzassj6 wrote:hey voicecoil i have the exact same problem as you.
You know how i overvolted my greenewheels with the bafang motor on it. Well the 2nd day i used it it started to stuff up liek urs.
I emailed keywin for spare gears, he asks for the model no and i dont know what it is. What model number is urs? and how do u find out?????
I overvolted mine to 60v, the reason why the gears strip is because the higher the voltage, the more heat it has. Especially if ur motor is rated for 200w or so, the bigger then watts the less heat you are going to get. Which means it will limit your distance if you dont want to damage your motor by overheating it.
The other reason why they dont use metal is because of thermo expansion, they dont want the gears to expand under heat.
If you use it at what its rated, the plastic gears will never strip and motor wont even be warm at all.
whats the drop out width of the motor? whats that?
voicecoils wrote:It's basically the inside width of the frame where the motor sits. So the drop out width of the motor (or any bicycle hub) is the width that corresponds to it just fitting in a frame.
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