liveforphysics wrote:AussieJester wrote:I wonder if Thuds 2 speed dog box would
be able to handle the power of this puppy?
If so it would make a good combo for a full blown
light weight drag bike i think
If the situation is 60kv and 60v (3600rpm) Then with 12kw at peak RPM, it should be around 26ft-lbs of torque. At 1,800rpm and 12kw, it should be about 52ft-lbs of torque. For #25 chain in the gear-box with small diameter sprockets, that would pretty quickly be a fail. If he stepped it up to #219 sprockets and chain, it should be able to take it.
But the question becomes, do you really need a gear box with this motor? If the efficiency curve climbs up from 0% at 0rpm quickly enough, I don't think a tranny would be needed at all. Maybe a wheelie bar though.
markobetti wrote:okay guys , heres the deal. The motors will be shipped directly from China ,since my friend Boris (work with him for 4 years ) has an export company there and he ll take care each order and make one big . Also , he is the only reason why i got these motors . He is checking today to get better shipment prices . The factory says she needs 14-20 days to produce the motors . Also when you pay in China , it needs almost 2 days for money to get there . So after payment needs three weeks to make them , then Boris will inspect if every motor looks okay , and he will need one or two days to send the motors since the manufacturer is not in Guangzhou. If you have your own shipment that you want to use , send me info on pm. everybody who wants the motor needs to send me their e mail on pm or here ; and then i will send the list of people with emails to Boris . He or his secretary will contact everybody with payment details. You can ask him if he can use paypal ( i dont think it is possible in China to use paypal , am i right ?)or whatever u use. Anyway , if we take more than 60 pieces , we ll get the price of 220 bucks . we need to have 30 pieces for 240 bucks. I ll take 2 motors more .
LETS WAIT FOR TEST TODAY ....AND HOPE THEY ARE WORTHY
Also , because we are making a big order together , lets make a deadline 5 days from today for everybody who wants to join in . What do you think ?
nieles wrote:because the motors are not made yet, can we make a request that the shaft will exit the motor from the other side?
it is a bit hard for me to explain what i am trying to say, but i hope you understand.
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