so i went ahead and got myself a new chain and am about to order the sprockets... i was just wondering about changing the gearing.
i was talking to randy on the phone about it for a little while and he was telling me if im gonna do it i would be better off staying with the 15t front and changing the rear... i think the stock on my 2000 750 is 15/41 (as listed on ca cycleworks)
so what rear would i go with?
and how is will it effect riding?
right now im just on the street but id love to get in on some trackdays when i can.
i might just stay stock, im jsut considering options since im buying new ones anyways.
No expert here, but going up 3 teeth in the back is just about the same as going down 1 in the front.
There's several reasons stated for going up in the back being preferred to going down in front. (Still talking gears here people, FOCUS!)
Randy also mentioned to me that it more better to increase the number of teeth in 3's, for some reason...
If you invest in a 30 to 45 dollar 14 tooth front (for temporary use only), you can ride it awhile (a few hundred to a few thousand miles) and decide if that is too much or too little change for you. Then, if you are satisfied with the change, you can get a new lighter 15 (just bling) and a new lighter 44 tooth rear (assuming you are right that stock is 41) and use you new chain. If you want more, then get a 45 tooth or less get a 43 tooth. You can even go more radical I hear but only if you know exactly what you want.
Since you are changing your front and rear sprockets and chain anyway, this is a way which gets you to understand what happened and decide for yourself in what dierction you should go.
Alternatively, get a 15/45 set up and be done with it. You'll probably have a max speed of 110 MPH but get there quickly.
BTW, if you rear sprocket is stock, they typically stamp the number of teeth on the sprocket itself or you count do it the old fashion way and count.
Hope that helps.
cdc
One of the reasons I like down one in front is it gets the chain farther away from the case.
If the 1098 gets just a little looser than the loose side of specification and is run at top speed the chain WILL graze the case.
I know first hand! (no major damage done, but there are light marks!)
i had my 01 M750 at 14/41 and was happy with that...you do lose a little bit of top end, but you'll be much happier i think with all of that lower end.
and FWIW i've bought quite a bit from chris at ca-cycleworks.com, and am always happy with his service...he comes highly recommended. i picked up a DID chain from him, AFAM front 14T sprocket, and a Stealth rear sprocket (41T) and the stealth is quite nice...aluminium inner, with a steel outer ring riveted on. very nice quality.
(http://www.ca-cycleworks.com/shop/catalog/ducati/img/stealth.jpg)
my 900 SS is 15/42 now (up from 15/37)...and i'm pretty sure when i replace the chain/sprockets, i'm going to go back down a few teeth in the rear.
best advice would be to ride someone elses similarly-geared bike and see what you think [thumbsup]
Speaking of gears & chains...
Change 'em all at the same time. A worn out gear will ruin a new chain.
As long as you're changing... You can go to a 520 chain, with lightweight front & rear 520 gears. You will save a LOT of rotating mass [thumbsup]
yeah i actually picked up a did vm520 off ebay the other day and am ordering my sprockets from cacycleworks... was just thinking about the whole changing the gearing thing before i order.
i might like the idea of getting to speed faster and losing a little top end.. m750 isnt much for top speed anyways
thanks for the input
would going up to the 44t rear effect my gas mileage or wear on the engine or anything?
Quote from: rsoffar on June 25, 2008, 07:33:40 PM
would going up to the 44t rear effect my gas mileage or wear on the engine or anything?
i wouldn't worry about engine wear...as long as your chain is properly adjusted, you'll be fine [thumbsup] you'll be much happier with that setup i predict...randy can get you all set up
well i jsut finished my order.. went with a afam 15/44 set up.
now i get to wait for em to get here. [drink]
I just picked up a chain riveter/breaker tool the other day because
Gearing can be a very fine line I've recently realized. Here is my story:
Stock on an 03 ST4s 15/38 (2.53333)
Tried 14/38 (2.71428) HUGE improvement! Still needs a little more low end.
Installed a FAST throttle cam. AGAIN, HUGE improvement. Night and Day, yet still manageable. Moreso actually.
Tried 14/40 (2.857)(same chain length would work) WOW, talk about giddyup! Hard to keep the front wheel on the ground, BUT and it's a big BUT, VERY snatchy mid corner getting back on the throttle. Slightly unsettling.
Bought a 15/43 set up on ebay cheap. Turns out it was a 42t, but 43 was stamped on it somewhere, simple mistake really. Mounted it.
Perfection on the road, and I'm guessing soon it will also be perfection on the track.
Only problem is that the chain was stretched.
SO, new chain, sprockets (had a new 42 on the wall) called for a new chain tool. Picked up the Motion Pro. Not bad.
When the parts come in,let me know, I can do the chain for you if you wish.
Steve