14 tooth sprocket

Message

blinkey501 · #1 Post by **blinkey501** » Fri Feb 10, 2012 5:51 pm

Any idea's where i can get one

fatboy · #2 Post by **fatboy** » Fri Feb 10, 2012 8:16 pm

Try Wemoto, they have an amazing stock and offer a lot of sprockets with plus or minus teeth numbers from standard !
Ive alwas had good rapid service from them,easy to use site

D-Rider · #3 Post by **D-Rider** » Fri Feb 10, 2012 9:02 pm

Are you sure?

I have no qualms about dropping to a 15t but a 14 may be a step too far in terms of dropping the chain run towards the swingarm. I'd advise going up a few teeth at the rear.

fatboy · #4 Post by **fatboy** » Fri Feb 10, 2012 9:35 pm

Fairly sure the old rule is 1 tooth at the front equates to 3 teeth at the rear?

anzacinexile · #5 Post by **anzacinexile** » Fri Feb 10, 2012 10:04 pm

D-Rider wrote:Are you sure?

I have no qualms about dropping to a 15t but a 14 may be a step too far in terms of dropping the chain run towards the swingarm. I'd advise going up a few teeth at the rear.

I wouldn't like to go lower then 15 on the front. That's what I've got and the chain guide gets a rough time of it. I'm with D, if you really want to go lower then what a 15 gives you I would crank up the rear sproket

blinkey501 · #6 Post by **blinkey501** » Sat Feb 11, 2012 7:48 am

I have recently just purchased a set if brembo wheels of a lad who used his gen 1 mille for track days...
His set up was 14/42.
Fair enough the bike was on the limiter at 155 mph but who needs to do 155 anyway.
I am setting up the spare wheels i have with racing tyres and a 42 rear.
15/42 might be ok but i was thinking of experimenting with a 14 front.

The chain must clear the swinger andy with this arrangement, but maybe not with a 41 rear

D-Rider · #7 Post by **D-Rider** » Sat Feb 11, 2012 10:33 am

The size of the rear sprocket will have minimal effect at the part of the chain run close to the swinger. I didn't say it wouldn't clear the swinger with a 14 but the gap will be reduced by another 2.5 mm (5mm over stock) so with a bit of chain flappage it might be an issue.

I'd not go there myself - adding at the rear would be the best way forward

#8 Post by **mangocrazy** » Sat Feb 11, 2012 11:12 am

I'd side with all the nay-sayers on this, Blinkey. I'm uneasy with the idea of a 15t front, although most folks are fine with it. Even with a 15t front you're reducing the amount of clearance Aprilia designed in, and if you're (for instance) extending rear ride height, as people often do for race/track bikes, then chain clearance on the top of the swingarm will be even more compromised with a 14t sprocket.

It's not as if there isn't a wide range of rear sprockets made for Falco/Mille - the choice goes up to 47t at least. Pair a 47t with a 15t front (if you must) and you'll have a top speed of just 132 mph and the front wheel off the deck all over the sodding place...

For road use with my OZ wheels I'm sticking with 16t front and going with a 44t rear. Gearing Commander (http://www.gearingcommander.com/) reckons this will give me a top speed of 153 mph with a 190/55 rear tyre, which sounds about perfect. But I will need a 108 link chain (which I've already bought) instead of the standard 106.

blinkey501 · #9 Post by **blinkey501** » Sat Feb 11, 2012 11:13 am

I will listen to your recomendation andy thankyou

randomsquid · #10 Post by **randomsquid** » Sat Feb 11, 2012 8:20 pm

mangocrazy wrote:Pair a 47t with a 15t front (if you must) and you'll have a top speed of just 132 mph and the front wheel off the deck all over the sodding place...

Ex-cel-ent.