Motorized bicycles

What's you guys' opinion on these things? I got a 70cc motorized bike in my living room right now. Can't wait to give it a spin as it's almost done.

Re: Motorized bicycles

HAW....about HAW, it's my replacement for LOL. Anyway, yeah your right. My wife might be a little upset about that. One thing I'm wanting to do to it, is to lace a moped hub to the rear wheel. I got a bike shop here in town willing to give it a shot for me. I figure if I did this, it'd beef up the rear wheel, since I'd need thicker spokes and it'd give me a chance to actually stop when I need to. I don't have much faith in the coaster brake.

Re: Motorized bicycles

I've been riding a 22 cc Tanaka Bike Bug bolted on to a Schwinn Breeze bicycle for the past 20 or so years.

Not bad. Goes about 17 or 18 MPH maximum, downhill with a following wind. They tell me it's a near approximation of a Velo Solex. No springs, no shocks, tough on the tailbone, but a fair amount of fun.

Two stroke weed whacker engine needs very little maintenance, just goes and goes and goes and ...

Re: Motorized bicycles

I've been having a love/hate affair with motorized bicycles for several years. I currently have one that I have taken apart for painting and customizing. It has a 49cc Tecumseh engine mounted over the rear wheel, with friction roller drive. Except for the motor itself, I have fabricated most of the parts for it. It is built on an old Trek rigid cromoly mountain bike frame. Peace, Jerry.

Re: Motorized bicycles

here's some pics of my bike

1216232670_meanbike.jpg

Re: Motorized bicycles

one more

1216232816_bike.jpg

Re: Motorized bicycles

Dude you need to tighten that chain

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yeah, I was wondering why the engine kept revving but I wasn't going anywhere.

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And those pedals are dangerously close to the ground.

Re: Motorized bicycles

Yeah they are too close. I gotta be real careful how I keep my feet. But, I'm not even sure I'm going to keep those forks. The bend in the forks totally change the physics of the bike. It looks cool, but it may just suck so bad, I'll change them out. Speaking of which, do you think that a moped crank and pedals would fit on my bike?

Re: Motorized bicycles

http://www.aztlanbicycle.com/lowrider-crank.html

4" crank, a hell of alot safer

Re: Motorized bicycles

Edward Richardson /

The rake and trail of the bike are pretty extreme, the projection of the forks is what has lowered the pedals.If you put some mountainbike suspension forks on you would see the pedals rise to normal. That said, the extension of the forks makes for smoother more controlled ride at speed. The snappy turnability of the mountain bike fork makes for a twitchy and potentially dangerous manueuverability at high speed.

Re: Motorized bicycles

BryAn eurism /

Say hello to several weeks in the hospital and a 5-digit Dr's bill. Now if you were a hot punk/emo/indie chick you'd be up to 9 grand on your dropcash by then

That's JMO on pseudo-peds

Re: Motorized bicycles

Pseudo ped?

Re: Motorized bicycles

Someone on CL in western Mass is selling cheap Chinese kits. Bolt on 80cc jobs, not even legal as a moped. Anyways, it's created a whole cottage industry of people who are bolting them to old bikes, and selling them on CL.

Re: Motorized bicycles

my buddy has a beach cruiser type Wizzer, doesn't ride it much he says it gets the wobbles.

Re: Motorized bicycles

Motorized bicycles CAN be safe if they are built right. But being built right usually means expensive, sometimes more expensive than a brand new moped. Putting a motor on a Walmart bike is just asking for it, and in this case, you will usually get what you ask for. Peace, Jerry.

Re: Motorized bicycles

here's mine:

Re: Motorized bicycles

dirtyD that thing is sick!

Re: Motorized bicycles

Bruce Edwards /

That thing is awesome! Just bend that exhaust to a better angle. Very cool looking bike...

Re: Motorized bicycles

BryAn eurism /

Donde estan los estoperos? 'course you need the motor chain connected to even need the brakes. Dustin you plan on using that On The Job?

Re: Motorized bicycles

Hey where did you get your hands on those forks? I really dig your bike. Also, with these engines having 6v output, where the hell can I find bulbs or lights?

Re: Motorized bicycles

thanks.

yeah, the exhaust is going, that's easily the ugliest part of these motors.

bryan, i've tossed around the idea of going black and white with it.

the forks are stock, i'm going to mock up a fake leaf spring suspension like the old 1912 excelsior board trackers using those tubes that are just sitting on there now. those tubes are part of the frame that i cut off to put on the horizontal top bar. also, i don't know about the lights... i'm thinking about using a rechargeable cordless drill battery to power my lights. i'm sure that the motor could power some 6v bulbs, but i'm not interested in relying on the piece of shit motor for anything.

this thing was an old schwinn beach cruiser. i don't know anything about bicycles, but i was told by someone that it was probably 60's.

i wanted to use a moped engine, but i couldn't find anything that looked aesthetically pleasing. if i could get hold of a rizatto califfo engine, i'd probably make a bsa bantam knock-off. i can't think of any other vertical or semi vertical cyclinder moped engines that would adequately fill the space.

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toe fur threadkiller /

i'm not a fan of the position of hte seat, but other than that, nice jorb.

Re: Motorized bicycles

the seat is just sitting on there. this was really early on in the project, and i just kinda laid everything into place to get an idea of what i still need to cobble together. thanks topher, i know that nice jorb is the highest compliment i can ever get from you. how's the beard?

Re: Motorized bicycles

Hey,

I've got the whizzer, too. #1, don't like the hard tail. Get a lot of "pinch" flats. But what this picture shows is the re-inforcement ring around the back wheel. If you don't have it, your wheel will go out-of-true quickly & wobble.

1216445228_december_07_047.jpg

Re: Motorized bicycles

BryAn eurism /

Hey yah Dustin he's right about the hub load. Shaun's got a few Moby hubs he'll let out to extra special people, & you'll appreciate the drum stopper a whole lot more

Re: Motorized bicycles

I met someone with a Rex

Have fun

Missouri calls mopeds, for that matter any 2- or 3-wheeled, <50cc, <30mph, <2bhp vehicle a "motorized bicycle".

Re: Motorized bicycles

Dirty D. I was thinking of getting a uhhh, power wheels battery and running my lights off of that. I think they can be found in a 12v and are easily rechargable. I like the idea of using some power drill batteries too. Like you, I don't trust the engine for any voltage output other than the kill switch. I'm planning to get a rear moped hub, as soon as I can get some extra dough together. There's a guy down here who can lace one to my rim with some thicker spokes. While that's going on I was thinking about using a solid inner tube for the rear.

Re: Motorized bicycles

Those solid tubes are only equivilent to about 25 lbs. pressure, I like to run mine at about 3 times that. I just use puncture resistant tubes, and carry a spare one, or two, and a pump. A good bike shop can build a wheel as strong as you want it, if you have the money. Peace, Jerry.

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