I'm thinking about changing to a 42 tooth rear sprocket on my 1260s. Has anyone tried it on a1260? Any thoughts or opinions as to what difference it makes would be appreciated. Cheers
I’ve tried 14f and 42r individually and together on my 1200DVT. Combined the bike was a little frantic. Separately, they give similar results: a far more useable bike, put simply the best mod you can make. Whilst I’ve only done 200 miles on my 1260, I changed the front to 14t from delivery. I’m really happy with it. Changing the front is a pain, particularly getting the 15t sprocket out, but without the chain issues of a bigger rear sprocket, it’s the one I’m happiest with.
Hi yes Ive fitted a 42 tooth rear sprocket as I did on the 1200 DVT. The drive of the corners is brilliant not say is was lacking but it has made a difference and your not loosing a lot of top speed Ive worked it out to be 7 mph.
Where can one purchase a 42T rear sprocket of good quality and how much should I look to pay? Does the standard chain still fit ok?
What do you want to achieve? I think that is the question. Gearing a bike up to produce higher top speed with less acceleration is done using a larger countershaft (gearbox) sprocket or a smaller rear sprocket. Gearing a bike down giving it more acceleration with lower top speed is done using a smallercountershaft (gearbox) sprocket or a larger rear sprocket.
What I am trying to achieve is better gearing. In my opinion it could be better. As it is I find the lower gears a little too long and top gear is too much like an overdrive. Knowing the effect changing to a larger rear sprocket will have, I am asking others on here who have tried it how they specifically find it on a Multi.
What is "better"? More acceleration? Less fussy engine at high speed in top? I just told you what effects the front and rear sprocket changes will have. What, in your opinion, is sub-optimal?
From my perspective I am not interested in going flat out anywhere, but I do like the sensation of being able to accelerate to say 100 mph a touch quicker, after that who cares, so my questions are, how many teeth is a standard rear sprocket and going to more would give me what I want yes?
Just about every Italian bike I’ve ridden has come out of the factory over geared. That is to say, too long in the way the OP describes. I don’t know if they do this to get past noise regs or something similar, but even going back to 2005 when I took delivery of my Tuono Factory, the first thing I did was change the rear sprocket. Luckily, the Italians prefer to run the speedo from something other than the gearbox, it’s almost like they know what a lot of owners are going to do! I can’t recommend it enough.
Standard is 15t front and 40 rear. Going down one tooth on the front or up two on the rear will give you a far more responsive bike. The gearbox, for me, makes a lot more sense with this mod. Worth pointing out that I’m no road captain. I prefer fairly spirited rides on twisty roads. Just saying!
I find in the lower gears on really tight twisty roads or in town, I find myself having to slip the clutch sometimes, or having to go down a gear to compensate when I don't really want to, and at motorway speeds the bike is much happier in 5th rather than 6th. I'm not bothered about losing a few mph on top end, I would much rather have it more useable at real world speeds. So from what you say it sounds like it will sort all that out!
Same sort of idea. As others have said, bikes can sometimes be a little over-geared but it depends how you want to ride and what you're used to.
Let’s just say ‘theoretically’ mine tops out around 155mph...... On a ‘closed road’ it’s gets up to 145mph fairly quickly and the last 10mph takes a ‘back straight’ longer than say....Donnington.
I believe the stock chain will fit but but it's near the maximum and apparently rises the ride height. On the sprocket calculator (see previous post) it states that you need three extra links for the 42 sprocket.
