How to check the compatibility of your bike with a wheel motor kit or a crank motor kit?
The first thing to know when buying an electric kit is which motor is compatible with your bike.
Can I install a wheel motor kit on my bike?
The rear wheel motor
Butterfly frame | There are two things to remember for a rear wheel motor. First the type of attachment of the original wheel to the frame, then the wheel center distance (internal width of the frame) There are two major standards in the world of cycling today for the fixing system. The first one is called the “butterfly” quick release attachment. Easily recognizable because the frame fixing spouts are open (U-shaped) as in the photo below. |
Then you have to measure the center distance of the frame at the level of the rear wheel, to do so you have to remove the wheel and measure the center distance of the frame as in the photos below. The European standard is 135mm, however some bikes may have a greater center distance (fat bike for example) and in this case, not all motors will be compatible. To summarize, if your bike has a 135mm center distance and a quick coupler, it will be compatible with the majority of our rear wheel motors, such as the Touring, Road, Enduro, Freeride, speed, MAC ... |
Measuring the center distance of a butterfly frame |
Special case of through-axle mountain bikes:
The majority of “full suspension” mountain bikes after 2013 have a so-called “through” rear wheel axle. The axle passes through the hub of the wheel and screws directly into the frame (like on motorcycles). This system is distinguished by completely closed frame clips as in the photos below. |
|
Closed frame rear base
Measurement of the center distance of a frame with through axis | If you have this type of frame, the center distance is certainly 142mm or 148mm (Standard BOOST). In this case, only the “thru axle” rear wheel motor kit will be compatible with your bike. |
The front wheel motor
Traditional fork and fork measurement | Si vous souhaitez installer un moteur roue avant sur votre vélo, il faudra mesurer l’entraxe de fourche. Le standard Européen est de 100mm. Il vous faut donc mesurer 100mm de largeur intérieure entre les becs de fourche comme sur la photo ci-dessous. Si votre vélo est équipé d’une fourche traditionnelle, tous nos kits moteurs roues avants seront compatibles. |
WARNINGIf your fork is a thru-axle MTB fork as in the photo (10x110mm, 15x110mm, 20x110mm axle…) No front wheel motor will be compatible with your fork and you will therefore have to choose a rear wheel motor or a crankset motor.. | Thru axle fork |
Can I install a crankset motor kit on my bike?
To find out if you can install a crankset motor kit on your bike, you must first measure the length of your bike's bottom bracket.
To do this, turn your bike over and measure the length of the bottom bracket of the frame with a ruler, without taking into account any external bearings (see photos below.
There are several standard bottom bracket lengths, some will fit any engine from our range and other standards will limit the choice to a single engine.
 | ||
Measurement of a bottom bracket with external bearings type 68 / 73mm Hollowtech. In this case, you only measure the frame cylinder (in black in the photo above). Do not take into account the external bearings (in gray in the photo). If you are between 68mm and 73mm in length, all of our crank motors will be compatible with your bike. Be careful, however, to also check the outer diameter of the case. | Measurement of a Pressfit type bottom bracket. In this case, the bearings are inside the frame, so you measure the cylinder of the housing (in white in the photo) | Measurement of a Fat bike bottom bracket. Some bikes, like Fat bikes, have bottom brackets longer than 73mm and in this case only the BBSHD crank motor will be compatible. |
Depending on the size of your bottom bracket, your bike will be compatible with certain bottom bracket motors:
-68 / 73mm case: compatible with all our bottom bracket motors
-case greater than 73mm: compatible only with the BBSHD crankset motor
Another measurement is necessary in order to determine the compatibility of a crankset motor. This measurement relates to the distance between the center of the bottom bracket and the lower stay of the rear triangle of the frame.
This should especially be done for bikes originally fitted with wide tires larger than 2.6 ". On these bikes, the seatstays may come in contact with the engine. This may prevent installation of the crankset motor or limit the diameter of the primary transmission chainring.
The distance between A and B (on the diagram above) must be greater than 64mm if you want to be able to install a BBS01 or BBS02 crankset motor. For the installation of a BBSHD crankset motor, the distance AB must be greater than 69mm.
Note, however, that if the distance A-B is slightly greater than the values mentioned above, it will be possible to add one or two gearbox spacers in order to slightly offset the motor outwards so that it no longer touches the shroud. |
|
In the photo above, the case diameter is 63.42mm. Installation of the crankset motor will not be possible. | Outside diameter of the bottom bracket (Case of carbon bikes): If your bicycle frame is carbon, the outside diameter of the bottom bracket may be too large to allow insertion of the crank motor. The outer diameter of the bottom bracket should not be more than 61mm. |
ISCG tab to remove | ISCG legs: On many freeride and Enduro mountain bikes, you will find dropouts welded to the frame. These are ISCG bindings for a possible anti derailleur. If your ATV has these dropouts, you will need to remove one by cutting or filing it. Note that the use of an anti-derailment plate will replace the anti-derailleur wisely. |
