-1 tooth on the front is essentially equal to adding three teeth on the rear. The -1/+2 combo with a 520 conversion will give you a very noticable difference in acceleration, with a noticeable decrease in top speed as well. If you dont go 160 anywhere though, the tradeoff is pretty acceptable (and a hell of a lot more fun).
yeah i know most go for -1 and +2 but i was just wondering if anyone was running just a 15 front to get an opinion.
as for the 520, what is the pro's and cons of this mod? and why do people not just run there standard chain with the new gearing?.
thanks for any advice given, Rich
I just installed a -1 +1 setup on my 04, and I love it. The power delivery is so much better, and so far It seems to not affect gas to much. I seem to be getting 8 miles less to a tank of gas. The power is just better all around. The only thing I don't like is the rpm's run higher, but so far it has been worth it. The 520 chain is lighter than a stock chain. Most people get it because of that and because 520 is the easiest size sprockets to get a hold of I guess. You cant use 520 sprockets with a chain that does not have a pitch of 520.
for track its not too bad, but not great either. but for street i am thinking bout going up 1 or 2 moe in the rear (i have -1 +2). my old Zx6R was -1 +5 and it was awesome for the street, keep in mind i'm not one of those exsessive speeders. i still got it up to 125mph and that was more than enough for me.
I run a 15 tooth sprocket up front on the street with the 520 chain. The combination of the lighter chain and smaller sprocket will make a difference. If you stick with the stock chain you might not notice as big of difference because you are not taking the weight off the drive train.
It made a difference on the street and did not raise the rpms to much but helped some on the low end. I change the gears on the rear depending on the track I am riding but leave a 45 tooth rear on for the streets.
Mojo is right. Any time you can take weight off of the drive train, especially reciprocating weight, it is an advantage. First, it lightens your bike. Second, sprockets are easier to get. Third, a 520 chain is often cheaper than larger sized chains. There are other added benefits too. Lighter drivetrain translates into less parasitic drag. Less parasitic drag can offer better throttle response. It also takes less of the engine hp to turn the wheel, making it seem like you have added power when you have not. It can even transfer into minimal gains in fuel economy.
The only cons I can see would be increased rate of chain wear, slightly less tire wear, and if coupled with a -1/+2 sprocket combo, a handful of tickets or a night in the pokey....:toocool: