03-24-2008, 08:01 PM
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#1 |
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Join Date: Jan 2008
Posts: 147
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Need help with sprocket choice
I need to get a sprocket for my bike....
I wanna be able to ride it to work... This means I would have to at times maintain a 50mph stretch for some time...Right now I would be pushing too many RPM's So what should I get?...Keep in mind that I doubt I will do any offloading.. My choices are 40, 42, 45, & 46 
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03-24-2008, 08:47 PM
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#4 |
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Join Date: Apr 2007
Location: Show Low Arizona
Posts: 2,889
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Well my first gear was still fairly useless, But my bike was a differant bike also. I had a ton of low end on it. Yours might have a differant ratio. Also my bike seemed to post lower top speeds than others with the Lifans and the Roketas on the site....Hope this helps. :?
1st gear 2.759 2nd gear 1.882 3rd gear 1.400 4th gear 1.130 5th gear .960. These were my ratios, I found it on a sales site so I can't say how accurate they really are. But I bet they are pretty close.
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<br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90 |
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03-24-2008, 10:05 PM
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#5 |
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,035
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When my bike ran, I had a 46 rear and could maintain 55-60 mph without hearing any screaming like I heard with the 56 stocker. Contact Bruce at EJ, and order a 44 tooth Lifan (the stock one for the most streetable stock Chinese enduro (IMO), the Lifan GY-5)
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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03-24-2008, 10:21 PM
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#7 | |
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Join Date: Jan 2008
Posts: 147
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Quote:
1st gear 2.769 2nd gear 1.882 3rd gear 1.400 4th gear 1.130 5th gear .960. Very close to yours....ecept for the 2.759 and 2.769 |
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03-24-2008, 10:47 PM
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#8 |
Join Date: Oct 2006
Location: 11481 State Route 44 Mantua, Ohio 44255
Posts: 1,112
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KW4TX
The ones I gave options on are only the sprockets I have in stock. The 43, 44 & 46 are not available aftermarket. The 46's I have are from A. Lifan. I have ordered smaller but only for one person and that was a 38. A 40t or 42t rear sprocket will do OK for what you are looking to do.
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Thanks, Bruce @ Endless Journey Cycles "Phone Calls Only" ~330-274-0098~ Hours: Tue.-Fri. 10:00-6:00 Sat. 10:00-4:00 EST. Dealer for: Lifan, Crossrunner ATVs. http://www.endlessjourneycycles.net |
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03-25-2008, 10:40 AM
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#9 |
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Join Date: Sep 2006
Location: COLUMBIA, SC
Posts: 973
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KW4TX,
A word of advise. Do your mods, air filter, carb, exhaust, tires if you plan to... (with the exception of the sprocket). Determine what RPM/vibration amount you can comfortably cruise at and note the corresponding speed on your speedo (lets say it's 40mph) Then use this equation. 40(56)=50(x) and solve for x. In this example, it would be 44.8 or a 45 tooth sprocket. This is assuming that you want the desired rpm/vibration amount at a cruising speed of 50mph as you mentioned. This will get you a lot closer than just guessing. Jason
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2008 Jonway MC-70-150 2007 Roketa DB-07B (RSM-200E) 2006 Roketa DB-07A (RSX-200E) 1995 Kawasaki Concours (ZG1000) |
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03-25-2008, 12:02 PM
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#10 |
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Join Date: Aug 2007
Location: Tomball, TX
Posts: 382
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my two cents.
My old sprocket was 56T and the bike would SCREAM with HIGH rpm's when driven at 55 MPH's. I have since changed it to a 46T and It runs a lot smoother. I can comfortably cruise at speeds of 55-60mph's without the bike's RPM's getting too high. and I still do ok off road on trails. and in the grass...
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-2005 Sierra SR200- |
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