Anyone have a 48 or 66cc on a 20" bike?

[mapbike]

I have an 60's or early 70's 20" bike that has a springer front end I'm not sure what kind of bike it is but it has a tag saying it was made in Ohio, I have an extra 66cc engine that I was hoping to put on the bike , so I checked today and the engine will mount right up with just enough room, I want to put the best overall sprocket size on it but I am unsure what to use on the 20" wheel, I am thinking of going with a 32T since the wheel is so much smaller that my 26" bike, I have a 41T on it and it works great on the 26" mountain bike, I'm 5'10" and 200lbs I live in the country and have about 3.5 miles of dirt road before I get to pavement and a couple a pretty good hills on the way and the 41T on the 26" works fine, a little sluggish at the hill top but it still pulls them with out having to pedal.

Anyone know if the 32T on the 20" wheel will give me about equal pulling power and about equal speed on the 20" bike?

 

[the new ausped]

aim for 28t or smaller if you can find it

++writen by norman++ occ stingray wheel iss 24' +big tire wif 36t = same gear raatio as 26' bike wih 44t

for you.... you will get 76% speed with 20' wheel + 6.5mph from sprocket change

=top speed of your other bike-25%+6.5mph

 

[mapbike]

aim for 28t or smaller if you can find it

++writen by norman++ occ stingray wheel iss 24' +big tire wif 36t = same gear raatio as 26' bike wih 44t

for you.... you will get 76% speed with 20' wheel + 6.5mph from sprocket change

=top speed of your other bike-25%+6.5mph

THANK YOU THAT IS HELPFUL.

 

[the new ausped]

how fast does your other bike go? and will the speeds match up roughly?

 

[mapbike]

how fast does your other bike go? and will the speeds match up roughly?

I have not checked the speed on my 26" mountain bike, I would estimate the speed to be maybe close to 27-28mph +/- 2-3 mph flat out, I'm use to being low to the ground running 47 mph on a go kart I built so it's hard to tell, seems pretty slow compared to my kart, but moves along pretty good for a bike.