juman said:Very nice man, doing very similar with a CRF frame. Just finished cleaning/rebuilding stuff, did pinch my rear tube so ehhh but now basically just fitting the new motor/controller in and hopefully I measured right for the battery but eh, figure it out as I go.
10022021-ERF.jpg
cheapcookie said:What model Honda?
DanGT86 said:Nice bike. I have a 98 CR125 frame in the garage that looks exactly like that. Do you know what frame changes there were over the years? Looks like almost none.
Gifting said:I have read every post in this thread and learned a lot so thank you for that! I am very close to pushing the buy button for this motor and the EM200 controller. The plan is to mount this to a Yamaha YZ85 frame. But I´m stuck at what battery to buy for this build so if anyone could point me in the right direction that would be great! I would prefere to buy a premade pack but I´m also open to buildning my own. What kind of specifications for the battery are we talking about for this motor to run at it´s best? I have been looking at Lipo batteries and if i lived in the US I would probably buy one of the Lipo packs from Electro & CO but I don´t so that´s not an option. But Lipo, Liion or something else doesn´t really matter to me as long as the match with the motor is good.
Jordan325ic said:Where space is tight people normally go li-ion. You want a battery between 48-72v (this is the spec for ab em200 controller), which has enough capacity (ah or amp hours) to provide the power (kw-kilowatts) you’re looking for. So for example a 72v, 25AH battery that can has a ‘50A continuous / 100A peak’ BMS gets you 7.2kw (72v x 100a) peak power or ~10hp. In simple terms that’s what you’re looking for: 1. voltage, 2. capacity and 3. discharge rate. Then 4. ‘does it fit?’ and 5. ‘will it burn my house down?’.
An Off-the-shelf battery likely will not use the space too effectively, and you will have to get creative with mounting. Small motorcycle frames are often difficult to fit enough battery. I’ve used unit pack power batteries in China before for a custom sized battery, but it will not be in a case.
proy said:Does anyone know what weight of oil goes in the gearbox? Do you just fill it until it over flows like an outboard motor? Thank you
DEHiCKA said:I am thinking about making a custom shaft.
Is it possible to disassemble the gear from the output shaft and reassemble on the new one without damage?
QS3000GB_1.jpg