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Thanks racerx, good point about the break-in, I'll give the 17 another try. Did some searching and it seems like 17/35 or 17/33 seem to be the most common setups.

Got the sprockets yesterday. I started with 35t wheel and 17t c/s, seemed pretty good almost 50mph. Tried the 16t and seems a little better, maybe its me but pulls thru the gears better, top speed right at 50mph.

Thanks old ct, you are right. Top speed is almost 40 mph which I thought was enough but now you have me thinking. I'll take a look and see whats available for somewhere around 35 teeth.

Before After

Well, finished it up this weekend. I had to do a little fab to get everything to fit around the motor - footpegs and engine guard needed custom brackets, also the old brake pedal wouldn't clear - welded up a new one. We will see how long the Lifan lasts, for now it's alot of fun just to blast...

T-bolt got back to me last night. Placed order for cdi and a few other things just now.

We have a roller - new tires, bearings, seals, bead blasted and painted rims, rebuilt front forks, new rear shocks.

Thanks racerx, I tried T-bolt but no answer - I went ahead and sent an email. In the meantime I started doing more research and fell down the rabbit hole, learned some about cdi but also more questions. Going to take a closer look today, determine if I need ac or dc.

So I've been focused on getting the chassis and wheels cleaned up and put back together. Today I took a look at the Lifan engine and it looks like I'm missing or lost the CDI unit. Did a little searching online but as usual seems like I find more questions than answers. The engine is a 125cc...

Thanks racerx, got everything cleaned up and back together. Haven't tested them yet, still need to get the wheels cleaned up and back on along with new brakes. Hopefully be able to get to it next weekend.

So I've decided to rebuild the front forks, everything is apart and I'm in the process of cleaning up and reassembling. I found a little bit on how to take apart but can't find anything on how much fork oil and what viscosity, anyone out there have details?

So I did tear down today, as usual a few surprises - All I can say is wtf? Pliers were inside the frame, sitting below the gas tank on the engine. Maybe used to crank that sheet metal screw into the engine. Ready for sandblast Will finish breakdown tomorrow and give her a little shineup.

Thanks, yes I saw a couple of places have harnesses, sounds like the best way to go. I'm thinking about an aftermarket front end and rear shocks. Also have a carb with the 125 but no idea what size it is, I'll take a closer look. Any suggestions for the exhaust?

Yes the paint is overall pretty good, planning on breaking it down and polishing it up - should clean up just fine.

So I came across this on CL and couldn't pass it up, CT70 with Lifan motor, owner bought the parts but never put it together. From what I can see it's a 72 CT70HK1, the Lifan motor appears to be an older 125cc but I'm not 100% sure. Current plan is to put it together with the Lifan and have some...

Picked up these two off of CL the other day, rougher than a stucco bathtub but I think I got a pretty good deal. I'm going to try and dig in a little deeper and see how bad off they are in the next few days. My original thought was make one good beater bike out of the two and sell off the other...

You're right red, I should have listened when you suggested it. It tested ok with a multimeter but that obviously isn't a good test. I'm with you, had to learn it the hard way but I'm not forgetting this one. Probably will never own anything else with a condenser but I'm still not forgetting.

Well per racerx's advise I focused on the ignition system. I have replaced points in the past and the bike ran well for a short period of time. I had previously tested the condensor with a multimeter and it tested ok. I went ahead and replaced the condensor and wow what a difference. Before I...

Sorry for the absence, been tied up at work. I ordered new points and condensor, plan on going thru the bike today. I've checked the spark several times and it seems ok not sure how to tell if it's weak.

Yes I have grease on the cam and the wiper material. I checked the condenser with a multimeter and it seems to be ok. Thanks for the suggestions, any thoughts on why the sparkplug keeps getting sooted up? Carb has a #60 jet and I've checked the clip that holds the needle in place, it's solid...