how can I get more power to the wheels so my son whom wheighs about 100 lbs up the hill not a steep one about 40 or 45 degrees or so

 

A smaller front sprocket or larger rear sprocket would help...

 

should I go one size or two sizes biger on the rear

 

Id think you would need to go 2 or 3 larger in the rear, or 1 smaller in the front to notice much of a difference.

 

I ride in the mountains. Everything is uphill or downhill with flat areas being the exception. The gearing on the TaoTao 110cc was just too high 2.4 to 1. It was constantly bogging down. So I changed the front sprocket to 12T and the rear to 48T. Now with a 4 to 1 ratio it pulls nice all over. The top speed is still more than I need.

 

i had a thread about the same thing with a gio 50cc in the expert section, my son who is 6 and approx 60 pounds cant drive it up the trailer ramp without me pushing....a buddy suggested swapping the sprocket but i wondered if something was availabe to bolt right on and i wasnt sure if it would make much difference but im glad its tried and true! thanks

 

thks TimKel that is great news I'm going to try it and let you know how it works out

 

Finding the correct sprockets was the hard part, installing the sprockets, easy. Don't forget you will need a longer chain to complete the job. FYI, I had to cut off the lower rear sprocket guard to allow the larger diameter to fit.

 

This is a pic of a 48T sprocket.

 

Thanks for the info and the pics!!

Where did you get the sprockets? What was the stock sprocket sizes?