Coleman CT100 79cc engine in a Schwinn Stingray Chopper?

[MuayThaiJJ]

I am pretty much set on swapping my 2-stroke engine for a 4-stroke one in my Schwinn Chopper. I already have a 142F 49cc 4-stroke engine but am wondering if anyone has successfully used a 79cc in a Stingray frame while keeping the pedaling intact?

My BBR 49cc barely makes it uphill and I think I'd like more 4-stroke torque.

thanks!

 

[MuayThaiJJ]

I am looking at this one: https://www.gopowersports.com/98cc-engine-kit-coleman-ct100/

 

[Gordy]

I am pretty much set on swapping my 2-stroke engine for a 4-stroke one in my Schwinn Chopper. I already have a 142F 49cc 4-stroke engine but am wondering if anyone has successfully used a 79cc in a Stingray frame while keeping the pedaling intact?

My BBR 49cc barely makes it uphill and I think I'd like more 4-stroke torque.

thanks!

@michael whiteman has. It took alot of work, but he did a fantastic job

 

[michael whiteman]

Thanks Gordy. Go back to the General Discussion Forum and look for Building Michael's OCC with a 79cc Predator.
Yes it can be done if you're crazy like me. The problem being ......these larger 4 stroke engines are just too wide. The other thing is having two drive sprockets on an OCC rear wheel. I personally dislike rag joints. Hub adapters for the OCC wheel are expensive. $63 at BikeBerry. If you forgo the pedals you can make your own like I did. Continue reading and you'll see what you're up against regarding drive ratios. If I were to do it all over again I think I might go with a CVT (torq converter) rather than a jackshaft. I'm more than glad to help you with first hand information on your build. Due to the tire size you really have to consider how fast you want to go and how steep are the hills you will incounter. Adequate planning will save you a lot of money and frustration with a build like this.

 

[michael whiteman]

This thread reads Schwinn Stingray Chopper. We both missed it Gordy. It doesn't say OCC at all. It might not look like my bike. Maybe we can see a picture.

 

[cloakedvillain]

Stingray...

 

[michael whiteman]

Yea.........not the same frame as my OCC chopper but a lot of what I said still applies.

 

[MuayThaiJJ]

Sorry here is my 2-stroke Stingway I wanna convert to 4-stroke yet retain the pedaling

 

[michael whiteman]

We're back on the same page again. There's the Schwinn Stingray and then the Schwinn OCC Stingray. Big difference!
We have the same bikes and if you want to use the Predator read my post. I couldn't think of any other way to make the pedals work. Max pedal speed is six mph. My first bike has a HauSheng 142f and I think it might be easirer to fit. I can compare them if you'd like. It's a high rpm engine with a 20t to 100t belt drive. Save this: 22.38 inches is the circumferance of your tire. Use the calculator to choose a sprocket for the wheel.

If you choose the Predator I would recommend the CVT (torq converter). For low speed calculations insert 3 to 1 in the boxes and for high speed use 1 to 1. 56T sprocket is the largest one that bolts on easily. BTW, beautiful bike!

 

[MuayThaiJJ]

We're back on the same page again. There's the Schwinn Stingray and then the Schwinn OCC Stingray. Big difference!
We have the same bikes and if you want to use the Predator read my post. I couldn't think of any other way to make the pedals work. Max pedal speed is six mph. My first bike has a HauSheng 142f and I think it might be easirer to fit. I can compare them if you'd like. It's a high rpm engine with a 20t to 100t belt drive. Save this: 22.38 inches is the circumferance of your tire. Use the calculator to choose a sprocket for the wheel.

If you choose the Predator I would recommend the CVT (torq converter). For low speed calculations insert 3 to 1 in the boxes and for high speed use 1 to 1. 56T sprocket is the largest one that bolts on easily. BTW, beautiful bike!

Michael, I am going to go with the 142F on the OCC Stingray, I already have the sprocket that comes in all these kits (44T I think) and the 142F output shaft has a 10T sprocket. How does that sound? thanks man