Brand new here. Building Fat Tire bike

[Joshua Hill]

So I purchased a mongoose dolomite 26 inch bike. I have a zeda 80cc Motor attached to it. Anybody know roughly how fast it will go?. I’m kind of a “Big football player guy” 6 foot 3 290 pounds.

Also the rear hub is 1.18 inches. I was told I needed a special hub adapter so the chain wouldn’t hit the fat tire. Anybody know which one?

 

[Greg58]

Welcome to the forum Joshua, I haven't built a big tire bike so I have no first hand knowledge. What a lot of people do is add a jackshaft kit to clear the tire. My son has rode my bikes and he's about your size, even the little 48cc engines pulled ok. Its all about gearing.

 

[Greg58]

As for the hub adapter some have modified the one inch with a die grinder or Dremel, a carbide rasp will remove aluminum fast. My 66cc no name eBay engine will do 35 with no problem, it is modified and I'm running a 38 tooth rear sprocket, I weigh 215 lbs.