520 chain conversion

1. ## 520 chain conversion

I am looking into doing the chain conversion for my 954 .. what would be the best setup if I am looking for more mid to top end power .. i dont wanna lose too much top speed .

stock is 16 T and 43 T rear

most ppl do 15T front and 45 T rear .. but isn't that going give me more low end and less top end ?...

I am think of keeping the 16T front or go down to 15 T front and then have 42T at the back ...

any suggestions? I made up this theory based on my bicycle experience .. since the sprocket and chain pretty much works the same

or should i go 15T front and 44T rear ?

2.

3. Take the rear sprocket teeth divide by the front one
43/16= 2.68=stock
Any numbers higher than that will make you slower but quicker, lower numbers will make you faster (top speed).
44/15=2.93=slower
42/16=2.62=faster
45/15=3.00=even slower (good for wheelies)

4. if ya do long rides as well as cruisin stuff then just go up a couple in the rear or 1 down in the front(1 in front is roughly 2.5 in rear).

5. try i down in front, you can usually go up 1-2 teeth in the back later without changing your chain....on my F4 I was 1 down in front and up 3 on the back for the street, I was able to go up 3 more (+6) for the track without changing the chain .....

It's only changing your overall gear ratios and not affecting only one area. It doesn't just affect the mid and upper range like you think. It'll give you more apparent torque coming off the line and for passing in any given gear but it will make your gears run out of revs sooner and force the shifts at a lower speed as a result and SLIGHTLY lower your top speed (and who uses their top speed that often anyway?) by maybe 5 to 15 kph depending on your gearing change and if it was hitting redline in top gear before. If, like most bikes, the air drag held you under the redline at top speed the gearing change may either have no effect on top speed or it may even slightly raise it by a couple of kph if your bike can now hit the redline. It will also make your highway cruise speed revs higher so the bike will seem "busy" at those speeds. But it does make top gear passes more effortless and let you pull wheelies easier.

7. okok ... i need more suggestions .. I want more power to do highway pass and i don't wanna lose too much top speed . so one down in the front is good enough ?

8. one down in front is a good start, on a 954 you already have more power than most of us anyway.....

9. Originally Posted by polarpreza
okok ... i need more suggestions .. I want more power to do highway pass and i don't wanna lose too much top speed . so one down in the front is good enough ?
I just swapped my stock 16/43 sprockets out for 15/45 on my 750 and I don't like it yet, shift shift shift, feels more like a 600 now. 1 down front or a couple up at the rear would probably been wiser or left it alone, I prefer the taller gearing.

10. Originally Posted by polarpreza
okok ... i need more suggestions .. I want more power to do highway pass and i don't wanna lose too much top speed . so one down in the front is good enough ?
Why not just take a second to shift down a couple before you set up the pass? Going to fourth will let you damn near WHEELIE past the people. More power after that is really immaterial. That way your highway cruising revs don't go up. One down is basically going to add 400 to 500 rpm to your revs at 120 (assuming 5500 rpm now)

And frankly why all the concern over top speed anyway? Like you ever have a place to do this for long? If you're seeing the top end of 6th very often then I'm a bit concerned for you.

11. But can you even get near redline in sixth gear with it stock set up, other then going downhill? I don't think you can. I think down one or plus four on the back is the ultimate street gearing.

12. Always try to go up in the back,
going down in the front isin't the best for the chain, smaller turning radius.

13. Originally Posted by J1k
if ya do long rides as well as cruisin stuff then just go up a couple in the rear or 1 down in the front(1 in front is roughly 2.5 in rear).

I did the 520 on mine (same stock as 954) and I wish I had gone 16/47. The 520 front makes more noise then stock too, thats either good or bad.

14. I dropped a tooth on my old 929 and on my 750. Its more than enough. However, I really don't like how buzzy the bike feels on a highway with the smaller tooth.

I wouldn't go to a 520 chain on a 954 unless you plan on changing it soon. The 750 ate the stock 525 chain when I dropped a tooth and I ended up getting an X-linked 525 chain

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