Hi,

I have nabbed a little old Yamaha Chappy from the late '70's as far as I can muster.

It has NO oil tank/pump and instead is running on oil/gas mix.

In theory, I can see how this will work OK, but I am unsure of what mix ratio (oil/Gas) should be used.

Can anybody give a good guess?

Thanks,

Ozarkkdrb

Fixing up a little bike for the nieces!

Hi

20:1 is usually a good ratio for standard 2 stroke engines.

Do you have a picture of the bike ?

Hi

20:1 is usually a good ratio for standard 2 stroke engines.

Do you have a picture of the bike ?

Not yet!

I sure can take a couple this weekend.

Poor old Chappy actually feels like it has decent compression and such. I have a new battery, airfilter (the old one was a chunk of nerf ball held in place by a rattlecan paint lid with holes drilled in it, gaskets for petcock that was bad leaky, new fuel line).

I love to get old bikes back into respectable shape and have a little fun. The poor baby just needs some TLC and common sense applied.

Ozarkdrb

Thanks for the info!

I have also nabbed 2 Yamaha Chappies. I'm guessing its late 70's maybe early 80's. 50cc motors. I have them running ok and they top out at about 22 mph. I know these bikes don't go very fast to begin with but is there any way to get them closer to 30? If all else fails I might end up taking them to a repair shop and have them tuned up but I would rather save so money and try and do it myself. Anyone have any thoughts or ideas?