Having built my first MB out of a Trek 820 mountain bike, I've learned a few things, and applied them to my new machine, a bright orange Moon Dog that's been sitting in the garage screaming "Motorize Me!" for about 2 months.
I used the old engine from the Trek. It's a BoyGoFast "80" cc engine, 44 tooth sprocket. All of the hardware such as the throttle twist grip and the locking clutch lever broken when installing it on the Trek, so I've used old bicycle brake handles for the clutch and throttle. I like the brake handle throttle better. The engine was cast in such a way that I could fit it around the frame member, so there was no need to drill the frame - I like that, I worry that drilling the frame could make it weak. I had to remove the chain guard, since the motor sits so low. I think I could cut it around with the tin snips. I cut out part of the rear fender with tin snips, for my chain to go through. I also got some small angle iron, and drilled it for fender mounts.
For lighting, I have a flashing red LED light under the seat, which is actually very bright and visible. The front light is interesting as you can see from the pics - it's a rechargeable spotlight, it has a halogen 1,000,000 candlepower spotlight, and a smaller LED spotlight built into it. The LED part will allegedly work for 80 hours on one charge, no info on how long the halogen will stay lit. I've been using it like the "bright" or "dim" feature on a car or motorcycle. The on switch for the light can be locked back, and there is a switch at the back that can be operated with gloves and frozen fingers to change from one to the other. Cost me $19 at wal-mart.
Here are the pics... Comments? Tips? Constructive Criticism?
-Mark
I used the old engine from the Trek. It's a BoyGoFast "80" cc engine, 44 tooth sprocket. All of the hardware such as the throttle twist grip and the locking clutch lever broken when installing it on the Trek, so I've used old bicycle brake handles for the clutch and throttle. I like the brake handle throttle better. The engine was cast in such a way that I could fit it around the frame member, so there was no need to drill the frame - I like that, I worry that drilling the frame could make it weak. I had to remove the chain guard, since the motor sits so low. I think I could cut it around with the tin snips. I cut out part of the rear fender with tin snips, for my chain to go through. I also got some small angle iron, and drilled it for fender mounts.
For lighting, I have a flashing red LED light under the seat, which is actually very bright and visible. The front light is interesting as you can see from the pics - it's a rechargeable spotlight, it has a halogen 1,000,000 candlepower spotlight, and a smaller LED spotlight built into it. The LED part will allegedly work for 80 hours on one charge, no info on how long the halogen will stay lit. I've been using it like the "bright" or "dim" feature on a car or motorcycle. The on switch for the light can be locked back, and there is a switch at the back that can be operated with gloves and frozen fingers to change from one to the other. Cost me $19 at wal-mart.
Here are the pics... Comments? Tips? Constructive Criticism?
-Mark
