hi, i will start to race with r6 and i read that i should replace the stock sprocket and chain to a 520 chain and the relation 15-50, is that right? what you sugest?

Well the idea behind swithcing to the 520 is that it is a narrower chain and therefor much lighter. Lighter chain and sprockets = quicker acceleration (even at same gear ratio).

Without a doubt I would drop a tooth on the front and go with a 15t. There is no reason this bike comes with a 16t except to keep the revs low so it passes noise regulations. I recommend a tooth down to everybody that comes through my shop.

As far as the rear... I would recommend getting a few. Get at least a 48t (stock) and a 50t. This will give you the ability to raise or lowering your gearing depending on the track.

Example, I run at Summit Point in WV. They have like a 1/3 mile straight after a nice wide 100mph turn. PLus it's downhill. So I might run a 49t or even 48t if it's cold and I'm making good power. This way I have lots of top speed. But when I'm at home at BeaveRun (which is a much smaller track) I'll run a 50t or even a 51t if I've got no power. This way I can exploit the power and the situation.

http://www.alojarfotos.com/images/MoDaFoCa/braga2.jpg

this is the track i will race

Area: 35 ha

Track Length: 3 021 m

Width: 11.00 m ó 14.00 m

Width at start-finish line: 11.00 m

Width at turns 1, 7 14.00 m

Width at turns 2, 3, 4, 5, 6, 8 11.00 m

Width at turns 9, 10, 11, 12, 13 11.00 m

Turns: 13

Left 8

Right 5

Straights: 6

Longest 898,121 (Start/Finish)

Drivers paddock 6 835 m²

Support paddock 19 255 m²

the straigh has 898 m

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4543155685&category=35600

is this kit good?

Personally I try to stay away from the "kits". There is sooo much mark-up, you get cheesy vortex sprockets (that look cool but wear out really fast), plus you're only getting an o-ring chain.

Check out Kneedraggers (http://www.kneedraggers.com), they generally have x-ring chains for like $85-$100. Which are far superior to an o-ring chain.

Next do some shopping on sprockets. I run Sprocket Specialist SS series. They are Stainless I think, although they might be aluminum. And I run the regualr material front. When you get the aluminum fronts they wear out in like 1k miles.

Also they are gonna whack you $20 flat shipping. The stuff I order from kneedraggers usually comes 2 day and I pay less in shipping.

And the B.S. about the gearing to save people from looping the bike. That's all crap. Yamaha, as well as all other bike manufacturers, gearing their bikes low so at cruising speed the bike is low in the rpm range for fuel efficiency and noise regulations. Manufacturers don't give a damn if you wad your bike up. They'd probably be happier because that would lead to a higher turn around on parts :wink: .

Oh, I forgot to mention about the track....Wow that place is big.

I'm thinking you'd probably be happy running 15/49 or even 15/48. That straightaway is too long to run 15/50. You'll be at your rev limiter in 6th halfway down and blow your motor by the time you get to you break markers.

The idea behind gearing is at the end of the straight you want to be just topped out or even a hair under you max power. Not at times and certain tracks you give up straight-away prowess to kill in the tights, but thats a starting point in philosophy. :twisted:

i saw rear sets 17$ at knee draggers wtf is this true?

renthal sprockets are good? the rear sprocket in alumium will wear a lot? tks

http://www.kneedraggers.com/details/501290

and.. what is the chain tool that you recomend? i dont have much money lol..
i puted shell semi-sintetic oil. is that ok? do you use full sintetic?
i am from Portugal and knee draggers dont send to here.. dont you know another shop that sends to here?

Wow, portugal huh. That's going to be difficult to find. Let me makes some calls and do some searching from my connections and see if I can find somebody in Europe for you.

I use a Dremel tool to cut the old chain off. Then I use this tool (http://www.kneedraggers.com/details/56-MP-6), it is very nice but it's a little bit small and hard to work with. If I had this to do again I would buy this tool (http://www.kneedraggers.com/details/56-MP-3), my friend has one and it is so much nicer to work with but it's twice the price.

Renthal makes nice sprockets. They make a lot of dirt bike stuff. That's what they are popular for here in the states. As far as chains go, I run a D.I.D. VM series chain (http://www.kneedraggers.com/details/13-DID-VMX).

ok.. when you know it tell me please.. anyway i added you on the msn..
tks

dont you have news? the race is next weekend.. tks

I am sorry that I have not posted a reply yet.

I was waiting to hear from the techs at TOBY. They make the steering damper is used on my 929rr. They are in Belgium. But Mike has replied so I don't have any other contact info for you in Europe. sorry.

You can try to email them @ secr@toby.be