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| An Electric Bicycle |
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| vtsteam:
The part I want to see is you riding off into the sunset aboard your electric bike! |
| S. Heslop:
Ain't it typical. I had the bike apart ready to paint it and then the long over-due rain arrives. I've been making the throttle lever instead. Couldn't find any good designs to rip-off on Google, so I ended up taking apart an old RC transmitter to see how that was built inside. It didn't give me any good ideas but it did contain some limited-arc potentiometers, so I quickly drew up this mess and built it. It's ugly, and I probably could've done better, but I didn't want to spend too much time on it. |
| vtsteam:
Looks good to me. Did you consider more of a motorcycle style throttle (rotating the grip)? Seems like it would be a natural match for a potentiometer. |
| S. Heslop:
Just took the bike for another short ride to try record some (the final!) footage. I forgot to put a spanner in the back and the goofy camera mount i'd made started to droop (i've put a huge weight on the front of it, to hopefully dampen the camera from wobbling, since I hate seeing that jiggly footage that most people get in vehicle videos!), and so I couldn't tighten the nuts down. So I started heading back and then the nut on the drive roller came loose! Had to push the bike back up the hill home. The camera mount also interferes with the rear brake cable and was lightly applying the brakes so that was no fun. I said i'd loctite the nut on but forgot to do it before taking the bike for that earlier successful test ride, and assumed that maybe I had gotten the thread handedness correct. I was wrong! Anyways it's getting late, its nearly 8:30 and the sun is setting. I guess i'll have to wait till tomorrow to really test it. And hopefully regular retaining compound (loctite 641) will work with the threads. Oh, in fact, I should probably put a second nut on and jam them together. Dunno why I didn't think of that earlier... |
| S. Heslop:
--- Quote from: vtsteam on August 02, 2014, 01:54:13 PM ---Looks good to me. Did you consider more of a motorcycle style throttle (rotating the grip)? Seems like it would be a natural match for a potentiometer. --- End quote --- I did, but there's not enough space on the handlebars with the grip shifts for the sprockets. |
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