Is the 36 tooth sprocket really worth it?

[duivendyk]

If you know the internal reduction in the engine 4-5:1 ? and the front sprocket size (teeth) I can give your speed at 5k. for instance.Off hand I'd say it might be a bit on the low side (high revs) but not excessively.

 

[mtd91]

Internal reduction is 4-1 and front sprocket is 12 teeth it think. So if you could do that for me i would appreciate it. Thanks.

 

[duivendyk]

OK ,we have: S=0.075x N/R ,my handy formula ! ,say N= 5000 rpm, R=4x44/12 or
R=14.67 and we get S= 0.075x 5000/14.67 ,S=25.56 mph.Seems about right maybe a tad on the low side if you're on the flats.At other speeds just multiply by the rpm ratio.I would not push these HT engines too hard in the rpm dept

 

[mtd91]

Thats about right. I am topping out at about 26mph..But i basicaly wanted to know how much i was pushing my motor and now i know. Thanks man.

 

[cabinfever1977]

i am now hitting 35mph with my 44t.
the wind does not slow my bike down much,i have plenty of power.

 

[duivendyk]

That is close to 7000 rpm,not a exactly a healthy speed,if it is a HT engine.(bearings)

 

[cabinfever1977]

i usually ride around 20-25mph and i can hit 35mph but i only do so for a short distance.

 

[radrob]

Thats about right. I am topping out at about 26mph..But i basicaly wanted to know how much i was pushing my motor and now i know. Thanks man.

i thought mine was topping out at 26mph thats where it starts cutting out a little. until i pedaled past to like 28mph and it will take off and run up to 37mph. on the stock 44 tooth. at about 30 it stops sounding like a chainsaw and starts sounding like a weedeater!! wow