So I have this really nice 110cc engine that I bought for a couple months ago to put on a go kart.

Let's just say that plans fell through, for a huge variety of reasons.

Anyways, I don't want to sell this engine because my dad gave it to me as a gift, and I want to use it for something. I would feel guilty selling this. It's really nice, 4-speed, does about 55mph with the gearing it had on it from the other bike it came out of. The guy said that it still had some left to give when he hit the top speed.

With proper gearing, I'm sure it could reach 60. It's around 7.5hp. Honda made some 5hp engines that hit 50 with a three speed gearbox. Logic says it's possible to hit 60, or maybe even more in this.

Anyways, I decided to fuck the go kart idea and do this right, with a motorcycle. I really don't want to make my own frame, but pre-made frames are incredibly expensive. Well, not really, but more than I want to spend.

The one reason that I don't want to make my own frame is that I don't want to, nor do I know how to weld. I figured a way around this is to make a welded-less frame. I don't care that that's not a word.

I could use some pre-drilled metal (See: http://www.discountsteel.com/index.cfm/go/main.itemDisplay/itemID/7.htm)

Pretend that's hollow and pre-drilled.

If I could get these together in the proper shape using nuts and bolts, it would be a cheap, welded-less frame. The problem with making my own frame is that I would also have to assemble the wheels and brakes and everything, and that might be just as expensive as buying a shell without an engine.

The other reason that I don't want buy a shell is because one that was designed for a 110cc or similar is that it would be a children's frame. I don't want to be twice as big as the frame. I want it to fit me properly.

ANOTHER reason is that this engine is built for street-legal bikes. It's designed to use lights, gauges, and everything else, so using a custom frame would be good because I can build it with all of that.

So, as you can see, there's a lot of reasons to not buy one and just build my own.

Any suggestions from anyone? I'm open to criticism, suggestions, questions, anything else.

EDIT: I know I'm against buying a frame, but this is perfect:

http://minneapolis.craigslist.org/mcy/844439243.html

that frame is to heavy.

No. No. No.

That frame would break, guaranteed.,A chassis has to be able to flex etc.

The honda four frame is far too wide to mount a single cylinder engine in. Imagine what would happen when you tried lining up the gearbox sprocket with the sprocket on the rear wheel.

and also homie, you want to bolt together a motorcycle frame?

that motor will be vibrating like crazy, those bolts will come apart. If you are doing sixty miles an hour and your frame comes apart on you, you're in for a whole world of pain.

Yeah, I'll just clarify that the frame I was saying would break was the one made from solid, bolted bar. Everything about it is wrong.

yeah I see what you mean now. you are also right about the motorbike frame. it is to big and heavy to put an engine less then one fifth the size of the intended motor, let alone linging everything up.

A 7.5hp bike is not going to do 100km/hr either.

The Honda 5 speed 125cc bikes make 11/12bhp and will do 60. 65 REALLY pushing it.

The Honda 5 speed 125cc bikes make 11/12bhp and will do 60. 65 REALLY pushing it.
What Honda 125?

The only decent Honda 125 is the RS125 (http://www.rscycles.com/bikespecific/bike_pics/RS125.jpg) and it is an unregisterable, purpose-built racebike putting out around 60-70hp in GP spec.

Edit: Do you mean a CR125? They make more than double 12hp man, even an 80cc motocross bike makes around 21hp.

Cr125's make alot more than that, mine is pushing 40hp. Hell, even my kx60 is around 15hp. That frame you are looking at is a street bike. 110 is WAY to small for that frame.

Cr125's make alot more than that, mine is pushing 40hp. Hell, even my kx60 is around 15hp. That frame you are looking at is a street bike. 110 is WAY to small for that frame.
Were you talking to me? Because my exact point was that a CR125 makes more power than that, ahah. I even went so far as to state the approximate hp of an 80cc 2-stroke motocrosser. I don't know the horsepower the new 150cc four-strokes are pushing out and I don't care enough to alta-vista it.

No, just agreeing with what you said. 150 four strokes are like 15hp, but you don't get the powerband of a two-stroke.

What Honda 125?

Err all of the 4 stroke ones...

CG125
CLR125
XLR125
CBR125
CA125
CB125

etc.

Yo!

Check out this. (http://www.planetminis.com)

With the right frame, right forks and right swing arm, size will not be a problem. The bike will fit you fine and you'll be on a solid dependable ride. You don't wanna go building a frame until you understand how you want that shit to handle and how different geometry changes will affect that.

Yo!

Check out this. (http://www.planetminis.com)

With the right frame, right forks and right swing arm, size will not be a problem. The bike will fit you fine and you'll be on a solid dependable ride. You don't wanna go building a frame until you understand how you want that shit to handle and how different geometry changes will affect that.

Thanks for the site man, that's great.

This is what I was looking for :D