Shopping

I realized that there were many things that I still needed in order to do much more work on my bike. I really couldn't to to much more without buying anything, I couldn't do any motor work cause i needed a flywheel puller. and i couldn't do any frame or bike work cause I needed to make and mock up other stuff first.

(sorry this picture is sideways)

So I went to princess auto to get some more parts, bits and pieces mostly. First I got some small wire brush wheels for a dremil. I am going to use these to do fine rust removal in small tight or awkward spaces, such as the gas tank or flywheel cover.

I also needed some clamps so that I can clamp the gas tank down. My plan with the two that I got is to weld the gas tank to them so that it can be easily mounted to the frame. the clamps that I got are for 1.25 In. piping which is the size of my frame tube.

I found these odd looking hose connecters, they are meant for air hose. But in my case I am going to custom fit one of them to the bottom of my gas tank, to allow fuel to flow from the tank to the carburetor. My problem with my tank is that I stole it off of an old lawn mower that had the carburetor built into the top of it. So there was no bottom feed for it. I now have to drill a hole in the tank and custom mount one of these to the bottom making my own bottom fed hose attachment.

These bolts I bought at home depot these are going to be used for the seat. For the bike I am going to be making my own seat, because it will be more comfy and I cur out the old seat post unintentionally. These bolts will be used to fasten the seat pad to the frame, and the seat frame to the bike.

This is a gear puller, not that I will be using it to pull gears though. My intentions for it are to use it to pull the flywheel off. This my sound very weird but frankly flywheel pullers are more expensive, and they aren't very different from one another. This one happens to be a 6 In. puller, I'm not sure how they measure it though because it is larger than 6 In. in just about every way. 

Finally I started to get down and do some more work on the bike. This is the flywheel cover, it basically guards the flywheel and directs the air flow, created by the fins on it, towards the motor for cooling purposes. As you can tell it was very rusty so I started sanding it with an angle grinder with a wire brush head. when I finish sanding it will be painted the same gloss black as the rest of the bike.

If you can't tell the rust left permanent damage on the flywheel cover in the form of pitting. although it doesn't look great the pitting has no real affect on the cover after paint besides it might look more like it was powder coated, with all of the ripples.

Pictures of What I've done

As you can see I had to make some pretty serious frame modifications to be able fit the 75cc engine in it. I had to cut the frame at the pedals and make it longer, I used the front fork off of another bike to make the frame ling enough to handle the engine the fork also made a extension because it offered a great spot to mount the motor to. I beefed up the top frame rail with a heavier stronger steel tube, and the back frame had to be reworked to make clearance for the motor. 

You will also notice that the engine also sits to one side. i did this to balance the bike side to side so it doesn't pull to one side or the other. The problem was that the flywheel was so heavy that I had to move the engine over so much in order to balance it that it sticks out the side. This lead to another problem when lining up the drive system. 

 

Because the engine was so far to one side there was no way of running a chain to the rear sprocket. What I did to solve this was add a gear casing thing to the side of the frame it has an axle that leads to another gear that lines up with the rear sprocket. this setup is a little awkward hanging out the side but it was the only way around the problem.

 

What I've done so far

Hello everybody, and welcome to my blog. For my blog I will be going to  build a motorized bike. This past summer I started it and made good progress but didn't finish and since there is still a lot of work to do to get it done, I will be blogging about the rest of the build. So far I took a small bike, cut the frame, extended it using a front fork from another bike in order to make a spot to mount the engine I have selected to use. I also have beefed up many of the other frame components making it much more rigid in order to support the weight of a heavier than intended rider, and the motor/torque and chain drive. So most of the framework is pretty much done, there are still a few things like the seat that have to be custom fabricated, but other than that it will be sanding, painting and working out the drive system, clutching, braking and fuel delivery. Some pictures of how far I am will soon be up.