What is the chain length of a standard Falco chain ??

[D-Rider]

At these prices, the value of a scottoiler becomes even more apparent

[HowardQ]

The best setting for the chain is probably 1 down on the front and 1 up on the back, 15/41. The chain would then be standard length again, but this is probably a bit too low for most people.

Sorry to be picky Howard but do you mean 15/42 here ?

As it happens that's what I will end up with due to B and C not having a 41.

Yes you are right Paul, I meant 15/42, (Mea Culpa), I was online at work as my AOL internet at home only works on days without a "Y" in them, so just doing it from memory (not a good choice at my age), without checking my facts!
It's just that 1 up at back and 1 down at front should put the chain back to the same length as standard gearing.
Both times I have lowered the gearing so far, by changes to just the rear or front sprocket, the adjusters have always ended up part way out on a new chain.
As I said though I think 15/42 might be just a bit too low for me, but be interested to see how you find it.
I think one of my problems is that I have had my bike with either standard gearing or just 1 tooth up at the back for more than 4 1/2 years and 20K miles, so I have got used to it like that, and also not using 6th gear much!
I am still getting used to a 15 front, which I fitted in April, and on my regular weekend route my head says I should be in a certain gear, and more often than not now I need to be one gear up! I also use 6th a lot more now.
Certainly the acceleration feels stronger and it is much easier to use in traffic at slower speeds.
So in general I would agree with most people that this seems a very good mod.

[moggyvan]

Well i've just tried to fit a 15T/42T and 106L Renthal chain kit to my bike which has an RSV swingarm....No chance can't get the axle through the rear wheel as there's no chain slack.
The only way round it is a 108L chain or fit another 41T rear sprocket, which is the only option i have now as the new chain is riveted. £19.99 for sprocket from intobikes.co.uk.
The moral of the story is- If you have an RSV swingarm fitted you'll require a 108 link chain with 15/42 sprockets. I dropped the front to a 15T as soon as i got the bike (new) so kept the original 41T rear and therefore kept the 106L chain.
Hope this is of some help.

[Aladinsaneuk]

Fairly sure I have a 43 tooth rear lying around I must try one day...

[Fausto]

OK then.

It's all fitted and fits perfectly.

So to recap that's a 15 and 42 Renthal sprockets with a 106 Tsubaki chain and a standard Falco swingarm. After an initial bedding in ride and adjustment the chain adjusters are showing 3 marks which is just about ideal I think.

Thanks for everyone's help especially Howard.