My 2008 Hensim HS250CR Arrived - Page 4

TheRealWorld · 05-07-2010, 09:32 AM

Sounds about right! You are going to need a sprocket, good luck. I have to go to work, have a good day.

tdkrantz · 05-07-2010, 11:59 AM

Quote:

Originally Posted by TheRealWorld

Sounds about right! You are going to need a sprocket, good luck. I have to go to work, have a good day.

OK, the search is on. I have a 32t 520. I guess 5 or 6 teeth more would be good. I don't want to kill the low end where I have to burn out the clutch to take off and have to push it up steep hills. :wink:

Cal25 · 05-07-2010, 12:11 PM

You dont want more teeth in the rear. You want less to drop RPMs.

What is the red line on your bike? 4500@45mph does not sound terrible to me.

FastDoc · 05-07-2010, 12:13 PM

Fewer teeth on the rear sprocket is what you are looking for. And/or more on the front. A practical limitation on the reduction of rear sprocket teeth is swingarm interference so keep an eye out for that too.

tdkrantz · 05-07-2010, 03:56 PM

Quote:

Originally Posted by Cal25

You dont want more teeth in the rear. You want less to drop RPMs.

What is the red line on your bike? 4500@45mph does not sound terrible to me.

I'm not sure of the red line. I added the tach myself. The manual says the max output is 8500 rpm +/- 10%. Maybe its not that bad after all. I'm still in break in mode but I did take it up to 5500 today and and it felt like it hit a power band or something. Yeah, I'm looking @ the manual and it says that the max torque is @ 5000 +/- 10%.

TheRealWorld · 05-07-2010, 08:29 PM

If I was going to do it again I would not go smaller than a 27 tooth. These guys should be able to help you find one, but I never could. Be sure to look at increasing the front sprocket, but it would be tight. One tooth there is quite an improvement and it wont require a chain shortening.

05-07-2010, 12:13 PM	#49
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Fewer teeth on the rear sprocket is what you are looking for. And/or more on the front. A practical limitation on the reduction of rear sprocket teeth is swingarm interference so keep an eye out for that too. __________________ Happy to serve.
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05-07-2010, 09:32 AM	#46
TheRealWorld Join Date: Jun 2008 Posts: 817	Sounds about right! You are going to need a sprocket, good luck. I have to go to work, have a good day.
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05-07-2010, 12:11 PM	#48
Cal25 Join Date: Feb 2008 Location: Terrell and Grapevine Tx. Posts: 1,585	You dont want more teeth in the rear. You want less to drop RPMs. What is the red line on your bike? 4500@45mph does not sound terrible to me.
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05-07-2010, 08:29 PM	#51
TheRealWorld Join Date: Jun 2008 Posts: 817	If I was going to do it again I would not go smaller than a 27 tooth. These guys should be able to help you find one, but I never could. Be sure to look at increasing the front sprocket, but it would be tight. One tooth there is quite an improvement and it wont require a chain shortening.
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