Adrian's solution to the child-sitting problem... (11/2003)
Note the interesting method of attaching the steering tube on this bike. Cool, eh? Also, unlike 'Woody' and 'Treebike', The steering arrangement eliminates the tiller effect (lateral swinging of handlebars). Nice job, overall on this bike! ss
"I contemplated this bike for about a month and built it in about a week and a half. The frame is laminated poplar. I chose laminated wood because of the problem you had with warping. The other parts were scavenged from two mountain bikes, a ten speed, a child's bike and a scooter. I only have about $150.00 invested, and that's with new road tires and new chains. The bike weighs about 58 pounds, but I did build it for exercise. I will eventually paint and varnish it but I can't live with out it long enough to do it. I regularly ride it on a 26 mile trip form my house to my mom's place on Sunday morning."
I asked about the little gizmo on the front of the bike, and
"To answer your first question, that is an LED light. I think it is called a bill-lite (see picture below). It was made to fit on the brim of your hat. It works pretty well, but the batteries are expensive. I have considered retro-fitting AAs, or a wind powered generator. Second answer, Ten. The middle sprocket was a three sprocket set, the front chain is on the small sprocket and the rear chain can shift between the two larger sprockets. The clearance is tight but it works. the rear sprocket shifts normally through 5 sprockets.
The main issues that I have had with this bike were with the front chain and the length of the brake cables. The front chain was so long that it would swing back an forth on the bottom and come off. To stop this I made a tensioner from an old derailleur as shown in the old picture. This tensioner was mounted solid and did move with the chain. After 20 or thirty miles it would work its way loose and the chain would come off. I later came up with the idea to add an external spring to the derailleur, which would cause the tensioner to follow and keep pressure on the chain (see
photo). This configuration has worked flawlessly for months now. The brake cable issue mostly applies to the rear break The length of this cable is somewhere between 7 and 9 feet with a splice in it. I just recycled cables from the old bikes I was using. This causes allot stretch so that not much force gets to the wheel. I replaced the front caliper with one of a better design (see photo) to compensate. This works well, plus if all else fails there is always the Flintstone Braking System not available on regular bikes."
You can reach Adrian at: firstname.lastname@example.org
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