However, the installation of the torque sensors is considerably more involved than the split disk PAS sensor, involving a replacement of your bottom bracket and (in the case of the ERider device) your crank arms. This allows the Cycle Analyst to regulate the motor power in proportion to your pedal effort. The torque sensor takes this up a notch by sensing not just cadence, but also the force that you are applying to the pedals.
#Electric mini bike kit manual#
You then configure the Cycle Analyst to put out a baseline power whenever you pedal, and use the throttle for when you want to override that with manual control. The 12 Magnet PAS sensor installs on the left crank and simply senses when you are pedaling. Both the simple PAS sensor and the more elaborate torque sensors can reduce thumb fatigue while riding and lead to a pleasant automatic assistance. If you opt for a V3 Cycle Analyst display, then you have the option to add pedalec control of the Brompton without needing to use the throttle for power. It's also more ammenable to running at high system voltages with Statorade cooling, as we demonstrated here.įull performance under different load conditions is available from our motor simulator, by choosing the Clyte SAW2013 or Brompton SOFP options from the drop-down list, and creating a 16.7" custom wheel size. Being a direct drive motor it is totally silent when running and can also do regen braking, which is a great feature on bikes like the Brompton that only have rim brakes available. The Crystalyte SAW20 motor is ideal when you want the fastest and most powerful setup and aren't quite as concerned about motor weight. It offers decent power levels (upwards of 500 watts) and can climb hills pretty well, but being a geared motor it also some audible buzz and it can't do regenerative braking. The geared motor is recommended when you want the most discrete package, when weight is a top priority, or when you want a motor that freewheels with zero drag when pedaling without assistance. Of course it is your right to do what you like with a product that you purchased and own, and we're here to help you have fun with that. Please note of course that Brompton does not endorse any 3rd party modifications to their bike and will be quick to point out that electrifying your Brompton bike will void your Brompton warranty, as is their right.
We’re happy to offer purpose built conversion kit packages tailored for this bike for the discerning enthusiast, with 2 motor sizes and a range of control options. Portable, compact, easy to travel with, and a delight to ride.
But once properly outfitted, they make excellent electric bikes. The front fork uses tiny 8mm dropout slots and a narrow 75mm hub width, the rear tire folds into the bottom bracket eliminating most mid-drive options, and the triple fold adds challenges to the cable routing and component location. Brompton's are among the most exquisite of compact folding bicycles, but also among the more challenging to convert cleanly into electric assist.
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