All things mtb

deacon · #1 07-26-2008, 01:07 PM

I finally used a mtb frame for a build. I have explained on another thread all I did but going to move the new stuff here.

OKay here are the pics of the bike before I go wreck it. It is a virgin configuration never ridden. Never even started yet.

the bike

engine gas tank kill switch and suicide clutch.

Engine and mount

New gas tank (goodwill 3bucks)

**Ilikeabikea** · #2 07-26-2008, 01:28 PM

Deacon, that fuel tank is just too cool.........................

deacon · #3 07-26-2008, 02:05 PM

I thought it was worth three bucks. It makes the bike look different for sure.

deacon · #4 07-26-2008, 02:06 PM

evaluation of the mtb

ILOVEIT...

Joe tried to tell me the engine in the front didn't effect the bike's performance but he was wrong. IT MAKES THE BIKE BETTER.

The bike runs like it is being chased by a Harley with rape on it's mind. I'm not kidding you I hardly had to pedal at all. The bike is loud as ****. I drilled holes in the muffler. To be honest I didn't have the nerve to open it up. Not so much the fear of speed it is the fear of that one hand brake on the rear.

I am going to have to get a coaster rear wheel so I can let it out and see what it will do. That 31cc engine hums on the front end. I don't know why but it rocks.

What do I really think of it, anybody wanna buy a china girl bike. Just kidding, I haven't tested this bike thoroughly yet, but it does seem to do good. I wish I had better brakes I would love to test this out hard today. I just don't trust myself with that one rinky dink hand brake. It will make a nice emergency brake so I'm going to keep it.

the small amount of pedaling I did was really easy since it is set up on pretty low gears. The middle of the front ring and the smallest of the rear ones.

THIS BIKE IS A KEEPER.

deacon · #5 07-26-2008, 02:24 PM

So what is the cost breakdown on this bike...

bolen weedwacker engine $75
mtb junked out $6 (Reused the cables as controls for the engine.
maybe $20 for hardware in the frame and bolts ect probably a little less.

Gas tank $3
gas lines to reroute $6 (I know I paid more for gas lines than the bike.)
The 24" wheel I used because I had it on the china bike and wanted to change it out anyway. $0

approx $110....

Now I'm satisfied that I can build a bike for about a hundred bucks that you can ride to work. I don't have to have the coaster wheel. I can get used to that brake but with this engine I don't know that I could stop without better brakes.

Jemma Hawtrey · #6 07-26-2008, 02:54 PM

Quote:

Originally Posted by deacon

evaluation of the mtb

ILOVEIT...

Joe tried to tell me the engine in the front didn't effect the bike's performance but he was wrong. IT MAKES THE BIKE BETTER.

The bike runs like it is being chased by a Harley with rape on it's mind. I'm not kidding you I hardly had to pedal at all. The bike is loud as ****. I drilled holes in the muffler. To be honest I didn't have the nerve to open it up. Not so much the fear of speed it is the fear of that one hand brake on the rear.

I am going to have to get a coaster rear wheel so I can let it out and see what it will do. That 31cc engine hums on the front end. I don't know why but it rocks.

What do I really think of it, anybody wanna buy a china girl bike. Just kidding, I haven't tested this bike thoroughly yet, but it does seem to do good. I wish I had better brakes I would love to test this out hard today. I just don't trust myself with that one rinky dink hand brake. It will make a nice emergency brake so I'm going to keep it.

the small amount of pedaling I did was really easy since it is set up on pretty low gears. The middle of the front ring and the smallest of the rear ones.

THIS BIKE IS A KEEPER.

Ok - I thought I was supposed to be the mad one around here

flat out a 31cc motor might be expected to hit anything upto 30-35 depending on gearing etc and output

pull is always better than push regarding motor vehicles - I am honestly not sure why but it seems to be that way all the time.

A cop in the UK would have kittens if he saw that gas tank! But its great - just make sure some homeless guy doesnt think he wants a drink - talk about firewater lol

Let us know how she goes

Jemma xx

PS. a run in HT would be great for a 'sasha's run' basis for the trike..

jasonh · #7 07-26-2008, 03:52 PM

Looks great deacon. I used to have a 'gas tank' that looked exactly like that when I was a kid, lol.

Is that a cantilever brake on the back? That's probably why it doesn't brake to well. I'd say upgrade the brake on the back, and add one to the front and you'll be good to go. No need for a coaster on this one.

Glad to hear it works well.

deacon · #8 07-26-2008, 04:33 PM

I have no idea what kind of brake it is except not very good. I probably am going to change it out for a ordinary old lever brake, but I dont have room for a front one the bike's engine took the bold on hold. I guess I could use a longer bolt but I am using the lever as a clutch lever.

I rode it again just before the rain. I LOVE THIS BIKE... It didn't try to kill me and it runs. I had to modify the mount back to my regular style but on the front it works just fine. The throttle works better now as well. I can throttle it down as long as I remember which way the throttle works.

I can't get it past half throttle... The wheel starts skipping on the terrain here. If I had a long flat I could run this thing like nobody's business. It climbed all the hills on my test track without any pedaling. The bike is terrific. I just need better grip on the drive wheel. I ran a smooth one this time.

I'm still going to try jb and fiberglass screen wire. I think I will ride up to the home depot and see if I can buy a foot of it.

Did I tell you I'm really pleased with this one.

deacon · #9 07-26-2008, 04:57 PM

One of the things that made this weed whacker better on the bike is that I drilled five holes in the muffler. I know there are differing opinions on whether this helps but it sure did a number on this bike. Of course it sounds awful. I'm sure one day the local constable is going to stop me. I can see the heads turning miles away.

I might need to get a set of those ear things that make me look like mickey mouse or a jet engine plane parker at the airport

jasonh · #10 07-26-2008, 06:35 PM

Deacon it's hard to tell from the pics..is your brake the type where the wire splits into 2 and each piece runs to it's own side? If yes, it is a cantilever brake and I can see why you don't like it (I am extremely prejudice against cantilever brakes.)

This may be a bit advanced or even a nutty idea, but here goes my brain working in overdrive again....for the drive wheel:

Basically what you would do is make your drive wheel have the reverse tread of the bike tire. So to do this you would need an identical spare tire that you can cut up...Put a clay like material on the drive peg, all the way around. Then take your spare tire piece and wrap it around the peg, imprinting the tread, only once. Then take it off and let it dry. Then, coat with a very strong resin - polyester resin (for fiberglass) would work, as would most any other epoxy product that's not too thick. You could just dip the peg a few times.

When it's dry, you would have a peg that "locks" in with the tread of the tire.

I guess another way would be to coat in the clay like previously stated, but then lower the engine to contact the tire, and slowly rotate the tire to imprint the tread on the peg.

dunno, just a crazy rambling thought. Excuse me if I'm a little too "mad scientist" for your thread