Quote:
Originally Posted by rockie
Tell me why. I see where people modify 50ccs to go 50 or so, but I am told that My 150cc modified to the bone can only go 50-55. I can already go 60 without any mods. Don't make sense to me. I will try the tire first, that sounds reasonable and the kind of answer I was looking for.
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Because the non-BBk'ed 50's DON'T go 50mph! Hell, even a fully modded BBK'ed to 83cc doesn't do 50mph. People serious have no idea. Many times I have seen other 150ccs, and EVERY rider says they "easily do 75-80mph" because they take what their speedo says as fact.
My bike has FULL mods save for a BBK, and it does 65mph on the flats as per GPS. Lighter bikes (mine is a type-23 style) may go 1 to5 mph faster with mods, but no stock gy6 can even touch me.
One of my club members swears his type-04 (handsome boy) 50cc with BBK and full mods does 70 mph (like SWEARS!) and even our old beater type-04 150cc smokes his bike.
Most mods WILL NOT increase your top speed, they just increase acceleration to THE SAME top speed it had stock.
A stock 150cc gy6 w 13" wheels goes 50 to 55mph top speed. You can tune it out to about 60mph with careful mods.
As for what to do; read my sig, and do those mods, you'll get the same results. Don't listen to people about bigger carbs, as bigger than 24mm are simply over-carbed and aren't making more power, just running rich and wasting fuel. A gy6 157qmj likes 24mm w 105 to 115 main jet, any more is way too much.