|
|
Post by draven0914 on Mar 18, 2017 17:02:44 GMT -5
What are the pros and cons to going from the 80cc big bore to the 100cc big bore...I need as much info as possible.... Thank you everyone
|
|
phatmanxxl
Scoot Enthusiast
Posts: 484
Location: Missoura
|
Post by phatmanxxl on Mar 18, 2017 20:53:31 GMT -5
More prone to crank failure.
|
|
|
|
Post by 90GTVert on Mar 22, 2017 8:49:53 GMT -5
47mm bores seem to be easier on the bottom end bearings regardless of tuning, but probably won't make quite as much power as the 50mm+ bores.
50mm+ bores can make more power, but seem to be harder on the bottom end bearings unless they are somewhat de-tuned to keep RPM down.
My take is basically this... For max longevity, you stay with 49cc. The low power and small bore doesn't stress components as much. For improved performance with reduced longevity, 44-47mm bores work well. When you must have every last bit of power and longevity is not a great concern, the 50mm+ bores are the way to go.
Regardless of any bore size, the more RPM or output there is, the more it will stress parts. Simply put, basically any time you increase performance, you are increasing the risk of parts failure. There's almost always some sort of compromise.
|
|
|
|
Post by greggkinney on Mar 22, 2017 22:08:45 GMT -5
cons- piston weight and heat
|
|
