Hub Drive Installation
There are thousands upon thousands of different bikes out there, so there is no list to guarantee that it will, however almost all bikes, whether they are mountain bikes, road bikes, cruisers, choppers, BMX or whatever else, have a very standard axle slot width (approx. 10mm), standard front and rear fork dropout widths (approx. 100mm and 135mm respectively) which our kits are universally compatible with. The front-on profile of the motor wheel is also very similar to that of a normal wheel, so clearance on the fork section is also not a drama. If you dropout dimensions are within 5mm of this then that is generally acceptable. To use the pedal assist sensor your bike must have the standard internal bottom bracket bearings and about 4mm clearance on the crank axle on the non-drive side of the bike. If this isn't practical, you can easily use the kit without the pedal assist sensor, or change your bottom bracket.
All our hub drive conversion kits are compatible with standard disk brakes. The hubs have a standard 6 bolt hole pattern, so a standard disk can be bolted straight on. The width of the rim is 25mm (outer width) and can take from a 38C up to a 3" tyre.
The rear wheel kits require a threaded, screw-on type freewheel, and can take up to a 10 speed.
We highly recommend the use of a torque arm with the hub drive kits, especially when they're installed on suspension forks. Torque arms help to protect the dropouts and to keep the motor in place.
What Size Conversion Kit Do I Need?
The information you need to know will be written on the tyre of the bike you’re converting. It’s not the diameter of the rim alone, it’s a complicated measurement that is annoying to work out from measurements of the wheel, rim and tyre. The easiest, most straightforward way to know what size you need is to look at the info on the tyre. It should read 20, 24, 26, 28 or 700C somewhere on the sidewall.
What’s The Difference Between 700C, 28″ And 29er?
It’s a complicated measurement and there is often confusion around this question. If you own a 29er, 28″ or 700C wheel bike, you need to order a 700C kit which will be the correct kit for your bike. The 29ers can have wider rims and hubs, so check the dropout clearance prior to ordering. We have not yet had a 700C, 28″ or 29er that has been incompatible. So long as you select the 700C listing and use the tyre that was on your wheel, your 29er will make a great electric bike.
Mid Drive Installation
In general there should be only one measurement that you need to complete; measuring to see if the bottom bracket is within 68mm-73mm. The internal diameter of the bottom bracket needs to be a standard threaded BSA; 33.6 - 33.9mm. Also check your bottom bracket for anything that can be in the way of the motor (such as cable gutters that are sticking out or any abnormalities). If your bottom bracket does not look like a smooth cylinder or you're not sure, please send us some photos so we can have a look.
The final thing that you will need to check is if the battery will fit on your bicycle. The mid drive installation can be more time consuming than our hub motor conversion kits. We suggest purchasing our conversion kit toolkit because it contains a commonly used spline bottom bracket tool which and a crank puller (both essential). If the bottom bracket has any small defects like a bur or foreign particle in the way, you may need to use a file to smooth these out. The mid drive kit requires a very good fit and this can make it quite stiff to install, but it will fit!