Measurement
This hubmotor is built for standard sized bike dropouts, ~100mm front or ~135mm rear. For measuring your dropouts see this link.
Motor type and wheel size
Matching the right wheel size and "turn count" is an important part of building with this product. While all other hubmotors Luna sells balance torque and top speed, the Mac options are built for extremes. 6T vs 12T turn count: 6T is best paired with a small rim (this is a fast wind) 12T is best with larger rim sizes (this is a slower wind but much more torque). It is your responsibility to pick an appropriate combination, choose wisely and ask the community for advice if you are unsure.
Below are basic estimates and as such can vary but this will give an idea of what to expect.
52v
| Turn count | Wheel size | Max speed | Torque | Recommended? |
|---|---|---|---|---|
| 12T | 700C | 23 MPH | HIGH | Yes |
| 12T | 26" | 22 MPH | VERY HIGH | Yes (Low max speed though) |
| 12T | 20" | 18 MPH | HIGHEST | Maybe (Highest torque but lowest speed) |
| 6T | 700C | N/A** | LOWEST | NO |
| 6T | 26" | 38** | LOW | Maybe (Only for advanced user ) |
| 6T | 20" | 32 MPH | MEDIUM | Yes |
| Turn count | Wheel size | Max speed | Torque | Recommended? |
|---|---|---|---|---|
| 12T | 700C | 22 MPH | HIGH | Yes |
| 12T | 26" | 21 MPH | VERY HIGH | Yes (Low max speed though) |
| 12T | 20" | 17 MPH | HIGHEST | Maybe (Highest torque but lowest speed) |
| 6T | 700C | N/A** | LOWEST | NO |
| 6T | 26" | 38** | LOW | Maybe (Only for advanced user ) |
| 6T | 20" | 31 MPH | MEDIUM | Yes |
**Over 38mph theoretically : Top speed will depend on your bike (weight, tire pressure, tire width, position on the ebike, surface wind speed ...) and the controller will probably cut the power before you reach that speed because you will have reached the thermal rolldown of the motor!
The speeds are simulated loaded speeds under no wind and 0% grade on a regular bike with regular tires (unloaded max speed not shown)
Basically:
12T: Good for trikes, pedicabs, heavy cargo bikes, or if a high torque motor is what you are looking for!
6T: You want as small a wheel as possible, and know your torque will be half as much as a 12T
Front vs. Rear
For 95 percent of users we recommend a rear motor rather than a front motor. The front 12T motors are high turn high torque, and were designed for pedicab and other users with high load, high torque applications (low top speed with 12 turn motor). Front or rear, always use the torque arms on both sides and do your research about proper installation. Every bike is different and fitting a hub motor to a bike is always a custom installation. Motors like this can put a lot of strain on the drop outs, and precautions must be taken that you do not snap your drop outs which can be catastrophic on a front wheel drive. Never install a high power hub motor on the front wheel with a front suspension fork, the torque of these motors will snap it.
Warning: We only recommend front wheel motors for advanced users, and only with steel (non suspension forks). Incorrectly mounting a powerful hub motor like this can be dangerous. Only take this on if you are familiar with the risks. Likely you want a torque arm on both sides.
SPECS
- The Mac motor uses a 32 magnet, 16 pair pole motor, 120 degree.
- An internal 5:1 planetary gear with clutch is implemented.
- New stronger Composite Gears are now standard
- 6 turn high speed motor - 520rpm loaded at 48V
- 12 turn low speed extra torque motor - 250rpm loaded at 48V
Options
Throttle Options
Click each picture to see the full description of each throttle type available including the varying features.
Controller
The controller for this kit is a custom programmed sinewave controller with specially built wiring harness. Sinewave means:
- Highest possible efficiency
- Very smooth power ramping
- Much more quiet motor operation compared to standard controllers
Click picture for full description of controller. This kit is only sold with ASI as this controller is needed for throttle compatibility.
However we do see the bare Mac motor here if you prefer.
Lacing Options
Typically we offer this built in several wheel sizes. This is a custom hand-built lacing job using DT Swiss Champion II spokes, high quality spoke nipples, spoke prep and Alex Rims. See our recommendations above for good combinations of size and motor type. We also have an option with no lacing if you would like to build wheel yourself or have this done by your local bike shop.
Add a battery
Currently this listing features a couple shark packs. Many other batteries are also available in the battery section that are compatible, including 48v, 52v and 60v.
Charger options
If the charger is bought on same listing with battery any adapter needed to connect will be included. Click the pictures below to visit the listing and see featuresets for each charger type. There are essentially three types: Standard (very basic and durable), Mini (good features at a good price), and Advanced (lots of features)
Solder Sleeves
These are a simple tool for wiring from battery to controller, very easy to use. Alternately you could crimp or solder, though it may take more time/money.
Batt-Man Display
This kit works perfectly with no display needed, and can also use something simple like the readout on the throttles we offer. This display is a high end optional addon for those that want an in-depth easy to use interface that is programmable, shows speed, accurate battery gauge and much more. Click the picture for description.
Assorted info
- Limiting temp (foldback): Starting temp 100*C, ending temp 120*C
- This motor does not work with cassettes and you need to install a screw-on freewheel instead.
Disclaimers
This is programmed for 1700w, and you need to make sure your battery can handle the amperage.
Theoretically this kit could also use a 36v pack but it is unlikely any commercial pack will handle that amount of current required to produce 1700W.
Controller support: Luna only supports the controller for the settings we provide
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