Electric Bike Conversion Kit

Karl Gesslein / August 18, 2015 Your BBS02 will give you years of service and love if it is treated properly.  The BBS02 loves to eat Watts, but not too many and not too fast. The Pedal Assist system even at its highest setting will only put out around 750 Watts which the BBS02 can eat all day long without overheating or causing problems. The real problems happen when using the throttle at higher power levels. Always hungry for more watts, your brand new baby BBS02. Be careful, this beast has bite.   The throttle on the BBS02 when set to the...

Karl Gesslein / August 24, 2015 Makes me hungry just looking at it. It took several years for BMC to realize that Nylon planetary gears in their larger geared hubs like the Mac motors could not take the kind of loads that people were dumping into them. Eventually they learned their lesson and switched to using composite gears, but with the BBS02 Bafang still haven’t wised up and made the primary reduction gear out of composite materials or metal. The primary reduction gear feeds against the metal helical gear on the motor and takes a tremendous load when the motor is started under load from a standstill....

Karl Gesslein / November 22, 2015 In the past, I’ve told people when they replace the nylon gear (instructions are here) to use heavy axle grease on it as the Lithium grease that it ships with is incredibly light and tends to just spin-off the primary reduction gears when they are spinning at around thousands of RPM. After 5 minutes of Internet research, I’ve found that doing this is a terrible idea and can actually CAUSE your nylon gear to soften and fail prematurely (it was really a ploy to help sell more nylon gears for Bafang). This takes me back to my original...

Karl Gesslein / December 23, 2015 There has been a near-mutiny of BBS02 owners (rioting in the streets) who have been disgruntled that their BBS02 units have shipped either without any grease in the secondary reduction gears or with the ill-suited white lithium grease in the secondary reduction gears. Both setups are not appropriate and will cause premature secondary pinion destruction and wear as well as making your drive unit much louder than it should be. A properly greased BBS02 running at full tilt should sound as loud as a large handheld drill and no louder. “What did you say?” *yelling* – “I...

Karl Gesslein / December 23, 2015 There has been a near-mutiny of BBS02 owners (rioting in the streets) who have been disgruntled that their BBS02 units have shipped either without any grease in the secondary reduction gears or with the ill-suited white lithium grease in the secondary reduction gears. Both setups are not appropriate and will cause premature secondary pinion destruction and wear as well as making your drive unit much louder than it should be. A properly greased BBS02 running at full tilt should sound as loud as a large handheld drill and no louder. “What did you say?” *yelling* – “I...