MattsAwesomeStuff
10 W
- Joined
- Mar 25, 2012
- Messages
- 78
Progress:
[youtube]sc0HNuTwcBg[/youtube]
Notes:
- Bent second pair of seat stays down to top of motor.
- Drilled and tapped upper motor housing for top mount.
- Cut and welded top mount, welded to upper seat stays.
- Assembled most of the rear end of the bike.
The clanging sound is the chain rubbing/bouncing off the edge of the motor. It needs a pulley to redirect it (knew that already).
I screwed up the top mount alignment, so it pulled the gearbox off its mounts (which it's floating on still, they need to be bolted to the frame). Since I started with the gearbox mounts, they're my crappiest design and welds, I'll probably just cut them better to size and replace them anyway.
My hose coupler is far too weak. If the tire isn't lifted, the motor shaft just slips rather than turning the gearbox. I already cut some slots into the end of the shaft for grip, no effect. I might put heavier/more/tighter wireclamps on it, or just replace it with a proper hose clamp if necessary. In the mean time, having it slip when non-trivial torque is required is kinda beneficial, for safety.
I'm sick of working on the back end, so next up I'll try to figure out the front end geometries and get that made.
[youtube]sc0HNuTwcBg[/youtube]
Notes:
- Bent second pair of seat stays down to top of motor.
- Drilled and tapped upper motor housing for top mount.
- Cut and welded top mount, welded to upper seat stays.
- Assembled most of the rear end of the bike.
The clanging sound is the chain rubbing/bouncing off the edge of the motor. It needs a pulley to redirect it (knew that already).
I screwed up the top mount alignment, so it pulled the gearbox off its mounts (which it's floating on still, they need to be bolted to the frame). Since I started with the gearbox mounts, they're my crappiest design and welds, I'll probably just cut them better to size and replace them anyway.
My hose coupler is far too weak. If the tire isn't lifted, the motor shaft just slips rather than turning the gearbox. I already cut some slots into the end of the shaft for grip, no effect. I might put heavier/more/tighter wireclamps on it, or just replace it with a proper hose clamp if necessary. In the mean time, having it slip when non-trivial torque is required is kinda beneficial, for safety.
I'm sick of working on the back end, so next up I'll try to figure out the front end geometries and get that made.