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Old 02-23-2015, 04:03 PM
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bluegoatwoods bluegoatwoods is offline
Motorized Bicycle Elite Member
Join Date: Jul 2012
Location: Central Illinois
Posts: 1,576
Default Re: I'm gonna build a new bike, part 2

Here's something that might be useful.

Just a small addition to the choke lever. It ought to help to find that lever when riding with gloves on. I don't have a lot of trouble with that. But I've always wanted something that's just a bit more certain.

It's not hard to center a 3/32 inch hole in that lever. Grind off the edge of a small coin and drill. Then open those holes to 1/8 inch. "Wallow" out the holes just a bit and a #6 machine screw will fit.

I've also been having a bit of trouble getting my driveline just right. I haven't mentioned it before because, in the various configurations, I've been feeling as though I've almost 'got it' and only small adjustments would be needed. But it's been a bit more troublesome than that.

When I first cut my chain I chose a length that would put my axle out at the front of my dropouts. That would've been fine, but the axle was so far forward that the lug was only barely holding onto the derailleur. While building I figured that would be acceptable, if only barely.

But it worried me. So I added a half-link. This gave so much slack that it was almost, but not quite, tight enough at the limit of my adjustment. I might have lived with that but I also discovered that something about that half-link changed the 'pitch' of the chain. The link just after the half-link would not seat on the output sprocket properly. Instead the chain bound up under the cover.

So I pulled the half-link and added one complete link. That made the chain far too slack, of course.

So I had no choice but to add in the kit chain tensioner. This is less than ideal. I dislike a bottom chain run that has such a bend in it. I also am not very trusting of those cheap tensioners. Perhaps I'll work on a mount that grabs onto both the chainstay and the seatstay. I'd feel more confident in that.

There is one advantage to this setup, though. I can partly tension the chain using the plastic wheel. Then I can fine tune the tension using my home-made axle adjuster.

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