P4 Motor
$350aud and $80aud freight

 Small Diameter Brushless Geared Motor


Motor has one continuous axle through motor making it suitable riders of various weights/loads. Some smaller diameters motors have axles on each side of the
motor and are a risk for heavier weight people/loads.


 

Internals: Planetary geared reduction ratio 5:1.
Note motors come from factory with 3 nylon planet gears ( #5 below), will supply with one additional metal planet gear,
customer will need to instal the metal gear if they wish to use. Using one metal gear saves wear to nylon gears but keeps noise of motor
quiet.


Picture above from esforum will replace with my own pics shortly

 

Two kits can be supplied: one for front use and one for rear use ( note aluminium forks are generally not suitable for hub motors)

1. Front 24volt or 36volt system: ( can be overvolted to 36v if metal gear installed)


 

 

Front Motor please check that it will clear your front forks using diagram below

2. For Rear Use:

Motor can be overvolted quite significantly for higher top speeds but one metal gear should be installed. Over-volting requires controller to run on that
specific voltage required, suggest if wanting to go over 48v that three metal gears be used in the motor).

 

Torque graph : 24volt 15amp controller

Original graph shown below, torque testing machines cut off testing before stall torque is reached so its necesarry to exprapolate the graphs as above..

Note: Kit contains:
Motor ( rpm to suit rim size)
Spokes to suit rim size/
controller ( depends on voltage customer will run on)
throttle ( thumb or twist type)/brake handles with cut off switches
torque arms/torque washers

Note if want already installed in a rim it will increase freight and small charge for rim.
Additional metal gears $20aud each.

Suggest front motor is suitable for lower power use its quite close to 200watt limit in Australia. Only motor on this website that is close to the 200watt peak power
limit.
Rear Motor suitable for higher power via overvolting ( overheating no issue). For rear use suggest 48v 18amp controller and 24volt lower rpm motor, that way you get good torque at low speeds, and quite good top speeds are achieved. But is somewhat dependent on rim size, contact me on solarbbq@hotmail.com if want further info.

eg 1: rear motor 24v 160rpm version running on 48v 18amp controller in 26" rim, hill climbing ability good, some pedal assist required on steeper hills, top speed
on flat approx. 40km/hr.

eg 2: front motor 24v 160rpm version running on 24v 15amp controller in 26" rim, hill climbing requires pedal assist, top speed approx 25km/hr.

Factory pics: visit end 2007
The unknown heroes and heroines of the ebike revolution



 

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Copyright 1998-2006 by Brett White on all images/text/information and graphical materials on this website.