3
Many electric bikes also come with a display console
so that you can view the performance of the ebike
whilst riding. At Grin Technologies we design and
manufacture the Cycle Analyst: it allows you to keep
track of the vehicle's battery usage and performance
characteristics, and with the more recent Version 3
model you can also monitor the throttle, the motor
temperature, control pedal assist systems and much
more. The Version 3 Cycle Analyst effectively
becomes the “brains” of the ebike, and is able to
control much of the electric bike ride behaviour.
Considerations when buying an electric bike conversion:
Will it fit?
Our goal at Grin is to make ebike conversion parts as compatible as possible with regular
bike standards. To that end all of our front hub motors have 100mm dropout width which is
the industry standard for front forks and they fit in the vast majority of bikes. The rear
wheels have 135mm axle spacing, which is standard for most bikes as well. Occasionally
if you want to fit a larger 7, 8 or 9 speed freewheel on a rear motor then you need to space
out the axle with some washers but most bike frames can be widened a few mms to
accommodate this. We have also taken the time to create complete engineering diagrams
for nearly all the hub motors we sell and these can help confirm the fit.
Our front motor axles are 12mm diameter machined to 10mm on the flats,
whilst the rears are 14mm diameter and 10mm on the flats. This means
they will fit in most bike dropouts but in about half the forks out there a
small amount of filing is required to make the dropout slot wide enough to
fit the axle. If you have lawyer lips you might also need a C washer so
that the motor nuts can be tightened flat against the dropout.
