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05-31-2007, 01:31 AM | #1 |
Join Date: Dec 2006
Location: Sweden
Posts: 61
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some help on sprockets please
Hi!
I have driven my new TMS (QingQI) 200cc for around 1000km now and i am thinking of regearing it a little. but how? I have 15/48 on now. 15/48 = 3,2 STOCK 15/45 = 3,0 15/42 = 2,8 16/48 = 3,0 16/45 = 2,8 16/42 = 2,6 a little question, does it matter if i go two tooths down back or 1 up front? Now since it is hard to get a rearsprocket for my bike (dr200's are not common in sweden and my bike is a copy of that) i am thinking of buying a 16tooth front. I have these speeds today with 15/48 (the rpm's are not exact but somewhere around that), what will my new rpm be if go for gearratio 3.0 instead of 3.2? anyone care to take a guess? or must I have a gear ratio of 2.8 for it to go smooth in 90/kmh my goal is to get 90km/h around 4000-5000 rpms. 100km/h = 7000rpm 90km/h = 6500rpm 70km/h = 5500rpm 50km/h = 4500rpm sorry for the long post and for spelling/grammar.
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Driving right now: Yamaha TT600S -93 Yamaha TZR 125 -87 (requires new cylinder) have own TMS (qingqi) Offroad 200cc -07 (died after 6000km) Yamaha XS 400 -82 Suzuki TS50X -94 |
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05-31-2007, 02:38 AM | #2 |
Join Date: Sep 2006
Location: North East England
Posts: 313
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I believe that most people with 200cc go for a 17:44 combination, my 223cc which has more torque at lower rpm runs 17:42 and it is very happy at 100kph.
Here's a list of alternative sprockets: All information courtesy of JT Sprockets, (so if it's wrong don't blame me). Front Reference no. 264-**. 17 Yam DT 125 Tenere '89, Honda CD 175 A/A4/K5 '71-'78, Derbi Senda 125 SM/R '04-'05 16 Gilera Cougar 125 '01, Honda CB 175 K3/4/5/7, Yam DT 125 LC/Z '88-'93 15 Honda EZ90 Cub '93-'96, Kymco 125 Pulsar Rear Reference no. 269-** 40 Honda CB 100 K1/2 41 Kymco Zing '97-'98, Honda CG 125 (Brazil) 42 Honda CB 125 Superdream '82-'88, Honda CB 125 Benly '82-'85 43 Honda XL 125 K2/3 '78-'79 44 Honda XL 100 SA/SZ '78-'80 45 Honda XL 100 S '79-'80 46 Kymco Stryker '99-'03 (** no. of teeth) |
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05-31-2007, 04:08 AM | #3 |
Join Date: Dec 2006
Location: Sweden
Posts: 61
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hi
thanks, but isn't those for honda clones? mine is a Suzuki DR200 clone (but might have the same sprockets anyway ) although that JTsprocket page is great!
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Driving right now: Yamaha TT600S -93 Yamaha TZR 125 -87 (requires new cylinder) have own TMS (qingqi) Offroad 200cc -07 (died after 6000km) Yamaha XS 400 -82 Suzuki TS50X -94 |
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05-31-2007, 09:08 AM | #4 | |
Join Date: Sep 2006
Location: COLUMBIA, SC
Posts: 973
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This would be how I would go about choosing new sprockets
Quote:
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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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05-31-2007, 09:18 AM | #5 |
Join Date: Dec 2006
Location: Sweden
Posts: 61
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that is great fatboy
i will calculate and try
__________________
Driving right now: Yamaha TT600S -93 Yamaha TZR 125 -87 (requires new cylinder) have own TMS (qingqi) Offroad 200cc -07 (died after 6000km) Yamaha XS 400 -82 Suzuki TS50X -94 |
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