Friction Drive system

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If that's like the band brakes I use, they have no grab rolling backwards. I think the knobbies work well with your spoke drive.
I've never really appreciated the band brake, they squall and braking not as good as disc brakes, but this one is working very well, I'm thinking with this set up the brakes have better leverage of the wheel than normal.
 
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I'm also thinking that I should of used an electric hub motor, would of been simpler to work with, also considering a 72 volt system, definitely would be a very very fast bike lol.

 
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New update with friction drive, with the pedal drive working it's time to add the motor drive. ;)
 

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Well I hate to say but fail again. The friction drive works great. The fail is the tire itself, with no room for a air valve forced me fill the tire with a poly foam didn't work, the second ride test was going good then the friction drive started slipping a to a point where it no longer was able to make a good connection. The foam in the tire began flattening out.

So another brain fart happened, what if the tire was lined with three layers of fiberglass ;)

I'll find out this week end...

There are solid rubber tires available, but where's the fun in that lol, I'll let you all know, opinions welcomed...
 
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With certain parts working I thought I would add attention to the 48 vdc motor.
The motor I'm using is a brushless type, with a dual d-bore shaft and getting the tooth count I want doesnt seem to exist, so now I'm a gear maker, so here it is...
 

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I have been busy working on this bike, along with other bikes.

The friction drive is really cool to watch it operate, there will be a video link on the friction drive in action and when I can do a test ride with an experimental fiberglass tire, I'll have a video on how it was made and test its ability, hmmm.
Here is a sneak preview of the fiberglassing going on.
Also to make it work it will need a split rim, can't wait to figure that out, lol ;)
 

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The thought of a fiberglass tire for the friction drive;

It solves the problem of no room for a valve stem.
I can install electronics inside the tire.
Better pressure resistant against the friction hub.

It's pretty much unlimited possibilities.
Using epoxy resin mixed with fiberglass matte can make stuff like a fuel cell, in this case it also has additives that can be added, something like a flex agent. With that in mind then add the rubber overlay on the tire form.
Will it work? We will see.

 
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I have been working on the drive system which the rear wheel is also a part of. The fiberglass tire is about ready for testing...
 

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Tallbikeman

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It may be that your knobby tire and the spoked hub act like two gears that mesh. I wonder how it will work on a street tire with no knobs? I always look forward to these posts about your project. Cool idea.
 

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Such an interesting idea. Looks like the hub and knobby mesh somewhat like gears would but in a slightly less precise way. Not sure the traction would be as strong with a smooth street tire. Keep posting, I'm loving this project.
 
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Two reasons why the knobby tires, as a hubless bike I wanted an aggressive look and later it became obvious that the knobby tire would provide a gear like connection.

For a short period before the foam filled tires flattened, the traction gear was working perfectly, as the tire flattened it started slipping till it didn't have enough traction to move itself.

Of course a solid rubber tire is the answer, but I like trying new ideals, outside of the box is my way of thinking.
 
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