By John1000 on Sunday, January 05, 2003 - 12:58 pm:

Interesting piece in Performance Bike about changing sprockets, gets a RSV 2.45 seconds quicker to 150mph than a stock bike. Worth a flick next time your in the news agents. 

By Tokas on Monday, January 06, 2003 - 10:35 am:

Interesting. But what relative times does this translate to? Before - After?  

By John1000 on Monday, January 06, 2003 - 04:51 pm:

Have left the mag at the girlfriends, will get it tonight and let you know. 

By Dave on Monday, January 06, 2003 - 05:00 pm:

Used Falco test in RiDE this month, and this one IS accurate. Plus my mug-shot's in it but don't let that put you off its a small un so not too scary

btw plenty of stuff on sprockets in older threads too... 

By John1000 on Tuesday, January 07, 2003 - 08:56 pm:

Here is a part of the write up��

But the bike that responds best to gearing changes is the RSV Mille.
First thing we do is fit a smaller front sprocket, but far from reducing top speed, it increases it by 0.5mph. the bike�s ability to accelerate is also improved, and gets better the faster it goes.
Up to 60mph, the RSV is 0.17 seconds quicker, although this increases to a saving of nearly two seconds to 160mph.
Raising the gearing further finds more performance. Another 0.33 seconds drop from the 0-60mph time and the bike reaches 150mph in 2.43 seconds less than the stock bike.
 

By John1000 on Tuesday, January 07, 2003 - 09:01 pm:

By Geo on Tuesday, January 07, 2003 - 09:18 pm:

Argghh.......I'm going blind!
Can't see a thing, wazzat one tooth down from that oversized 17th front they used in Europe?
If that is what I think (I already have a 16) then the 44 rear would only save .43 sec to in 0-150...not that much especially if you say that .33 was under 60mph that leaves only a 0.1 sec improvement in 60-150?
That doesn't sound right.
Now I'm blind and confused both....  

By John1000 on Wednesday, January 08, 2003 - 07:55 am:

Oh dear that didn�t work did it.
Tried to reduce it to get it to the right file size and cocked it up.
Don�t seem to have a program that can do this and still keep it so it can be read sorry. As for the article that�s what they claim.
 

By John1000 on Wednesday, January 08, 2003 - 08:06 am:

Geo check your post. 

By Geo on Wednesday, January 08, 2003 - 01:46 pm:

Got it, thanks John!
It shows that accel curve nicely but it does point out that changing both sprockets gave 6th the same ratio as 5th had originally.
It didn't mention what size sprockets they were on that page.
By mistake I ended up with a 15/44 (stock was 16/42) on my VTR for a week and I HATED it around town. In lower gears instead of riding 1st-2nd-3rd-4th etc ratios felt like 1/2, 1st, 1st and 1/2, 2nd 1/2, 3 1/2, 5th.  

By Tokas on Wednesday, January 08, 2003 - 05:27 pm:

John, could you send the pic to my mail as well?

If it's OK by you I can also make the diagram readable AND smaller in filesize.  

By Tokas on Wednesday, January 08, 2003 - 05:31 pm:

...Oh, I just thought about it, John.
If you have the whole article scanned and mail it, I would off course appreciate that even more...