litespeed
100 kW
That bike looks just crazy excellent!
I need to do one of your drives one of these days......
Tom
I need to do one of your drives one of these days......
Tom
tangentdave said:This drive is easily removed from the frame in only a few minutes, turning the bike into a 34lb enduro beast. A custom mounting bracket matches the lines of the frame and shows no flex under a full 8kW load. The freewheel crankset can remain in place or is quickly swapped with a standard crank arm for another 1lb of weight savings. The CA remains tucked behind the handlebars, the Domino is exchanged for a normal lock-on grip.
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Why a removable motor unit? So I can race Cascadia enduro events one weekend, plug the motor in, race Lost Sierra the next, pull the motor and ride the Downieville DH course same day. This bike is capable of competing in absolutely punishing Enduro World Series events and hang with the motos in OHV areas. One bike, any trail.
cr0m08 said:Hey Mugenski,
tangentdave said:Drive unit weight: 7.5lbs
Dimensions: 100mm diameter, 120mm length
Engine: Neutronics 3215, 225kV
Controller: Castle Talon 120, custom mount/heatsink, QS-8 main battery connect
Performance (calculated w/ 120A phase):
135ft-lbs crankset torque
400RPM crankset
48t cog: 216ft-lbs wheel torque, 21mph
42t cog: 189ft-lbs wheel torque, 24mph
32t cog: 144ft-lbs wheel torque, 31mph (straight chainline)
24t cog: 108ft-lbs wheel torque, 41mph
18t cog: 81ft-lbs wheel torque, 56mph
cr0m08 said:Whilst on gearing, I did an excel calc for gearing with the tangent kits I have (screenshot and excel attached). The formulas can easily be changed to suit others if wanted (description of formula at top). I know its not much, but thought some of the newer guys may like it. Of course its only calculated and doesn't consider loading or drag. The motor revs or RPM calculation is based on 12S LiPo at 50% charge, either a 3turn 3220 or 7turn 3210 so just change the figures in the formula to suit others. Hope it helps someone.
That GT Fury is one nice looking rig and should be a hoot with a Tangent! Post updates
pedal cadence of over 300 I wasn't sure if it had a place since we cant pedal that fast anyways