ELECTRIC BIKE KITS
you along at speed. The ideal companion then, was that rare thing, a folding mountain bike. In this case I used the Montague Paratrooper (as reviewed in Velo Vision 25). The kit came ready-fitted and featured the very practical ‘rucksack battery’ option (rack mount also available). It attached and detaches using Electric Mountain Bike’s very own ‘emergency bail out’ connector, which can snap free without damage. It would probably have been the simplest kit to install anyway – fit the motor wheel into the forks, mount the on/off/Eco switch onto the bars along with the twist grip throttle, attach the controller under the rear of the seat then connect up and cable-tie your cable runs. Playing around with the bike on the grassy 1-in-3 banking of the local park I remembered my youth spent messing about on trials bikes – this bike really does have a similar feeling of being able to climb mean and rough gradients from a standing start. The skill is in the rider’s front to rear bal
HEINZMANN The Heinzmann undoubtedly vies with the Sunstar for the highest quality kit out there. An initial inspection of the parts confirms it – from the ‘twist and click’ style battery plug to the high quality cabling, it reinforces the idea that German-made equals quality and durability. Although the Heinzmann has been around for many years it has only recently seen the introduction of a digital controller – an excellent addition allowing for the provision of an accurate handlebar-mounted battery meter, an effective battery-saving ‘Eco’ mode and more powerful standing starts. I specified the high torque version of Heinzmann’s 200 W rear hub motor complete with eight speed freewheel and the larger capacity battery option as I wanted to test out the most varied potential uses of retrofit kits. Torque means immediate power – ideal for the steepest, roughest climbs – rather than an ability to push
VELOVISION ISSUE 32 DECEMBER 2008
For off-roading it makes sense to carry the heavy battery in a rucksack. This means a break-away connector (ABOVE RIGHT) is needed. The Heinzmann digital controller fits neatly under the saddle (RIGHT).