New sprockets needed?? - Page 2

Red-Duc · 21-Sep-2006, 01:07

Been out for a ride tonight, Rpm is 5500 at 100 mph with a 37 rear sprocket, Looks like i should go with the 39t rear.

opps forgot to mention, test was done on a private road

Iconic944ss · 21-Sep-2006, 16:45

Interesting - tried it the other day 100mph = 5600rpm on a 41T rear

I told the officer I had to try this test out for DSC purposes!

Cheers - Frank

Red-Duc · 21-Sep-2006, 16:58

Frank what front sprocket you using?

psychlist · 21-Sep-2006, 17:09

When you're comparing speed/revs on bikes, make sure you really are comparing like for like. Quite a few changes were made to primary drive ratios through each models life.

Red-Duc · 21-Sep-2006, 17:44

Not sure what the other bikes are but ive got

97 SL MK5 15 front 37 rear and at 100 mph pulling 5500 revs

ziggi · 21-Sep-2006, 18:48

Ah! Now I've also got a 170/60 section rear tyre (newish Pirelli Diablo). I reckon a 180/55 section rear tyre would affect it somewhat also.

Interesting all the same

Iconic944ss · 21-Sep-2006, 20:33

Paul has a very valid point about final gearbox ratio's

Red-Duc, front sprocket is a std 15T I believe.

Frank

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21-Sep-2006, 01:07	#11
Red-Duc Registered Forum User Mille Posts: 389 Join Date: May 2006 Location: Oxford Been out for a ride tonight, Rpm is 5500 at 100 mph with a 37 rear sprocket, Looks like i should go with the 39t rear. opps forgot to mention, test was done on a private road Reply

21-Sep-2006, 16:45	#12
Iconic944ss Registered Forum User WSB Hero Bikes: 1993 - 944SS & Aprilia Falco Posts: 7,796 Join Date: Oct 2002 Location: north east Interesting - tried it the other day 100mph = 5600rpm on a 41T rear I told the officer I had to try this test out for DSC purposes! Cheers - Frank Reply

21-Sep-2006, 16:58	#13
Red-Duc Registered Forum User Mille Posts: 389 Join Date: May 2006 Location: Oxford Frank what front sprocket you using? Reply

21-Sep-2006, 17:09	#14
psychlist Registered Forum User Ducati in my Blood Bikes: Diavel, very non-std black & white ;) Posts: 4,701 Join Date: Aug 2002 Location: Over there Mood: Lucky? For some, maybe! When you're comparing speed/revs on bikes, make sure you really are comparing like for like. Quite a few changes were made to primary drive ratios through each models life. Reply

21-Sep-2006, 17:44	#15
Red-Duc Registered Forum User Mille Posts: 389 Join Date: May 2006 Location: Oxford Not sure what the other bikes are but ive got 97 SL MK5 15 front 37 rear and at 100 mph pulling 5500 revs Reply

21-Sep-2006, 18:48	#16
ziggi Registered Forum User 888 at Last !!! Posts: 957 Join Date: Jan 2002 Location: Horsham, West Sussex Ah! Now I've also got a 170/60 section rear tyre (newish Pirelli Diablo). I reckon a 180/55 section rear tyre would affect it somewhat also. Interesting all the same Reply

21-Sep-2006, 20:33	#17
Iconic944ss Registered Forum User WSB Hero Bikes: 1993 - 944SS & Aprilia Falco Posts: 7,796 Join Date: Oct 2002 Location: north east Paul has a very valid point about final gearbox ratio's Red-Duc, front sprocket is a std 15T I believe. Frank Reply