deacon
minor bike philosopher
I am about to start a build with the broken 42cc chainsaw engine. I have welded a #25 sprocket on it. It was one I had laying around. I also have about a twelve inch scooter wheel and chain that was laying around. I bought another #25 chain so I would have enough to use the wheel and the engine together.
Tomorrow I guess I will start work on the engine drive combination.
What I wanted to mention is how much trouble it was to break that chain. Yes I got it done but it was a pain. Here is what I found. With a park chain breaker you can only get a small amount of the pin out. I just couldn't get the angle right or the drive rod is too large not sure which it was.
so with just a tiny bit out my vise grips wouldn't catch onto the pin. I used a #6 finishing nail to drive the pin a bit farther out. Just enough for the vise grip to grab on. I used a second pair to hold the chain while I pulled the pin out. With a little trial and error, I managed to get it out far enough to break the chain. Getting it back to together was a little clamping it with pliers. There was also a hammer it home component as well.
So it can be done, but it is a little harder than the bicycle chain with the bicycle tool.
drawing of proposed engine and drive train assembly
all this mounted on a home made luggage rack over the rear tire.
Tomorrow I guess I will start work on the engine drive combination.
What I wanted to mention is how much trouble it was to break that chain. Yes I got it done but it was a pain. Here is what I found. With a park chain breaker you can only get a small amount of the pin out. I just couldn't get the angle right or the drive rod is too large not sure which it was.
so with just a tiny bit out my vise grips wouldn't catch onto the pin. I used a #6 finishing nail to drive the pin a bit farther out. Just enough for the vise grip to grab on. I used a second pair to hold the chain while I pulled the pin out. With a little trial and error, I managed to get it out far enough to break the chain. Getting it back to together was a little clamping it with pliers. There was also a hammer it home component as well.
So it can be done, but it is a little harder than the bicycle chain with the bicycle tool.
drawing of proposed engine and drive train assembly

all this mounted on a home made luggage rack over the rear tire.
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