WilliamT
Active Member
So after 2 front hub builds, I decided to do my first mid-drive build on a Specialized Rockhopper. The kit I purchased from Luna Cycles with a 48v 13.6 ah dolphin battery that I can swap with my RadWagon commuter.
Things to consider before doing the build.
1) Get yourself come tools for the bottom bracket. I purchased the small toolkit from Performance Bikes and it had almost everything I needed. The only other tool I purchased was the Luna Wrench but I think the Spin Doctor kit (~$50) had the same tool
2) The kit comes with 2 hex bolts (M6 1.0 x 10 mm) used to attach the motor to the frame. On this bike, it was too short so I had to go to home depot to get longer ones. Luna supplies some additional washers and 2 (M6 1.0 x 25 mm). I needed 15 mm length bolts along with the washers. Cost was an additional $0.80-$1.20 I think for 2 (M6 1.0 x 15 mm)
3) Because I have a small frame and the battery went into the bag, I had to get an extension cable to connect to the battery. I got a 12 gauge 2 ft cable for $9.
https://powerwerx.com/powerpole-connector-extension-cable
BBS02 kits use Anderson power pole connectors.
4) If you want to keep your existing chain, count the number of teeth on your current chain wheel so you can order the same teeth size for the Lekkie chain ring. Mine was a 42 tooth.
Overall, the build was very easy to do with the tools. On this bike the front derailleur guide couldn't be opened to slide out the chain but luckily the chain had a link to easily pull apart and re-attach.
The build was originally for a bike with manual disc brakes so I ordered the standard override brake levers. That didn't work out so I put the kit on this bike with hydraulic brakes. From my past experience with the hydraulic brake sensors, they are a pain to align. Luna sells a hydraulic cable set with motor override features for I'm not ready to shell out another $120.
This time around, I hooked up one of the manual brake levers with the override below my left brake to control shutting off the motor. This allow me to cut off the motor when braking and also cut off the motor when shifting. It serving as my "clutch" because I'm too lazy to install the Gearsensor that I purchased lol.
Things to consider before doing the build.
1) Get yourself come tools for the bottom bracket. I purchased the small toolkit from Performance Bikes and it had almost everything I needed. The only other tool I purchased was the Luna Wrench but I think the Spin Doctor kit (~$50) had the same tool
2) The kit comes with 2 hex bolts (M6 1.0 x 10 mm) used to attach the motor to the frame. On this bike, it was too short so I had to go to home depot to get longer ones. Luna supplies some additional washers and 2 (M6 1.0 x 25 mm). I needed 15 mm length bolts along with the washers. Cost was an additional $0.80-$1.20 I think for 2 (M6 1.0 x 15 mm)
3) Because I have a small frame and the battery went into the bag, I had to get an extension cable to connect to the battery. I got a 12 gauge 2 ft cable for $9.
https://powerwerx.com/powerpole-connector-extension-cable
BBS02 kits use Anderson power pole connectors.
4) If you want to keep your existing chain, count the number of teeth on your current chain wheel so you can order the same teeth size for the Lekkie chain ring. Mine was a 42 tooth.
Overall, the build was very easy to do with the tools. On this bike the front derailleur guide couldn't be opened to slide out the chain but luckily the chain had a link to easily pull apart and re-attach.
The build was originally for a bike with manual disc brakes so I ordered the standard override brake levers. That didn't work out so I put the kit on this bike with hydraulic brakes. From my past experience with the hydraulic brake sensors, they are a pain to align. Luna sells a hydraulic cable set with motor override features for I'm not ready to shell out another $120.
This time around, I hooked up one of the manual brake levers with the override below my left brake to control shutting off the motor. This allow me to cut off the motor when braking and also cut off the motor when shifting. It serving as my "clutch" because I'm too lazy to install the Gearsensor that I purchased lol.
