Deacon's Bike

**fairracing31** · #71 (**permalink**) 04-22-2008, 01:54 PM

Quote:

Originally Posted by deacon

Does anyone know of a china engine kit for rear mount friction drive. I guess there is no reason you couldn't mount the kit engine with a friction drive. Now that would be something to see lol.

but seriously let me know if you have any info on one.

Deacon, when I built my first double suspension bike, I mounted the china motor on the rear. Altough I planned on using a chain and not a friction drive.
I did not like it for what I was trying to do. It was to top heavy and the center of gravity was all screwd up. I think it would have worked great for the pavement, but not for the trail.

I might still have the bracket's that I made, weather it will work on your bike I dont know. I will dig threw my scrap pile when I have time and hopefully I did not use them on something else. If I find it I will post pic so you can see if it will work.

deacon · #72 (**permalink**) 04-22-2008, 02:02 PM

Its an interesting idea for sure. I can't imagine how that would look lol.

I suppose all you would have to do would be to weld a drive wheel into the chain gear to make the friction drive. You would still have your clutch which is a really good thing. Nothing else would really be effected.

Ah the gas tank would be a problem since it is gravity fed.

**fairracing31** · #73 (**permalink**) 04-22-2008, 09:26 PM

I just finished looking in my big pile of scrap metal, sorry Deacon I must have used it on another project. But I dont remember using it, if I'm lucky maybe I will run across it.
Yeah, it was a ugly looking thing, very strange to look at something you just dont see everyday.
I remember why I did it that way, I had trouble keeping the chain to stay on. I was trying to get the motor to go up and down with the rear suspension. I went with a spring loaded tensioner instead that I made from a Nissan timing chain tensioner.
I'm glad I sold that bike, it wasnt my best work.

The next one will be better

deacon · #74 (**permalink**) 04-22-2008, 09:31 PM

Quote:

Originally Posted by fairracing31

I just finished looking in my big pile of scrap metal, sorry Deacon I must have used it on another project. But I dont remember using it, if I'm lucky maybe I will run across it.
Yeah, it was a ugly looking thing, very strange to look at something you just dont see everyday.
I remember why I did it that way, I had trouble keeping the chain to stay on. I was trying to get the motor to go up and down with the rear suspension. I went with a spring loaded tensioner instead that I made from a Nissan timing chain tensioner.
I'm glad I sold that bike, it wasnt my best work.

The next one will be better

Ah chain problems I know them well....

deacon · #75 (**permalink**) 04-23-2008, 07:57 AM

My next move is to locate a twenty inch bike with smoothish tires. I need the crank set and the front wheel to match up with one I have to make the trailer.

So here is a question for all you bike guys. I need the crank set for the short pedal throw with the rear 20" wheel, but what chainring would be best. the 20" chain ring is smaller and would amount to a lower gear, and be easier to move, but the larger ring from the 3speed would be larger and get more movement from the rear wheel per revolution. What say you guys large or small.

Remember I will only be pedaling to start the bike moving and to climb the big hills. If memory serves, I can engage the larger chain ring sooner when I'm going up hill. So I could keep the speed up and prevent wheel grind maybe. Or I could use the smaller ring and expend less energy maybe. I don't know which is better.

You know that three speed hub might not have been a bad idea with the friction drive bike. Too bad they didn't make one in a twenty inch size.

**Ilikeabikea** · #76 (**permalink**) 04-23-2008, 09:17 AM

I bet a good bike shop could lace that 3 speed hub into a 20" wheel..................

deacon · #77 (**permalink**) 04-23-2008, 09:24 AM

Quote:

Originally Posted by Ilikeabikea

I bet a good bike shop could lace that 3 speed hub into a 20" wheel..................

I spoke to one and they would do it the price wasn't all that good but heck if I really wanted one i would go there. I guess it is one of those, if i found one it would be peachy, but to pay fifty bucks to have it done, isn't going to happen.

deacon · #78 (**permalink**) 04-26-2008, 01:01 PM

clown bike is almost complete. It has a 300 watt friction drive engine with 2 lawn batteries for power.

There are only two minor things to do yet. I have to find a 20" CRANK SET and change the tire on the trailer. I have another of those multicolored tires I want to put on the trailer.

By the way the axle and nuts for the trailer were about four bucks. I had the battery box so it was just junk before. The wheels for the trailer are both front wheels from junk bikes I picked up.

The five dollar bikes have donated lots of parts so were a good deal. The tongue on the trailer is a piece of tubing from a fertilizer spreader I bought for the wheels.

I tested the bike it pulls the trailer perfectly I think. It goes up the steepest hill i found without pedal power but it is very slow.

This is the prefect bike to get just a little exercise and to really enjoy the enviornment you are in. I think I'm going to slip it on the bike trail tomorrow. It is quiet enough that I'll have to put a bell on it before I take it out for a ride on the bike trail.

deacon · #79 (**permalink**) 04-26-2008, 04:45 PM

My wife got bored so we took a ride. I found a 20" kids bike for ten bucks so I bought it. The crank set now happily resides in the clown bike. I also changed that one white tire to the multi colored one so my entry for the trash bike build is ready. I'll do the final shot tomorrow I think. I think I have built my final bike. I have one more 100% ready for an engine of some kind, so I don't have to build on it. Well it does have a 16" jury rigged crank set but I'm not going to pedal it a lot so I think I'm going to leave it.

I have an extra set of wheels for another trailer so I might build one of those one day. The one I built was just for the battery box. I think I want a general utility trailer now. I really think i need a sidecar lol....

**fairracing31** · #80 (**permalink**) 04-28-2008, 12:32 PM

Deacon, have you seen these videos? It's a three step video of a guy mounting a friction drive.

Vid 1
YouTube - How to build a motorized bicycle - Video 1 of 3

vid2
YouTube - How to build a motorized bicycle - Video 2 of 3

vid 3
YouTube - How to build a motorized bicycle - Video 3 of 3