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Discussion Starter #1
yes i searched lol. saw a general consensus of 15/42 gearing, 55mm tall tire, 104-106 links.

i'm running a 180/55/17 tire, 16/43 gearing. dan kyle sent me 120 links. i was hoping that he would have sent me the correct # of links so i could just slap it on, but alas he didnt, so obviously i need some links removed.

how many links do i need for my set-up, with enough clearance between the front of the tire and the swingarm, as well as plenty of adjustment left to adjust chain slack as it wears?

thanks.
 

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Between 104 and 106 links. :D
SP1 or SP2 swingarm?

Best to just locate the axle somewhere near the middle of the adjustment range, or maybe a little closer to the front, and just put the chain on and size it to fit.
That DID chain ain't going to stretch very much over it's life if you keep good slack.
Remember to grind of the rivet head before attempting to push the rivet out with a chain tool.
 

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yes i searched lol. saw a general consensus of 15/42 gearing, 55mm tall tire, 104-106 links.

i'm running a 180/55/17 tire, 16/43 gearing. dan kyle sent me 120 links. i was hoping that he would have sent me the correct # of links so i could just slap it on, but alas he didnt, so obviously i need some links removed.

how many links do i need for my set-up, with enough clearance between the front of the tire and the swingarm, as well as plenty of adjustment left to adjust chain slack as it wears?

thanks.
Research is always great. ;)

Hopefully someone here can help more than what I have below.

From my research a 16/43 is the same as a 15/40. The 180 tire will give you some extra swingarm space. Are you installing yourself? Always start with a higher chain length and cut as needed.

Check this out. Interestingly the recommendation is different between SP1 and SP2. I guess since they have different swingarms....
http://www.fireblades.org/forums/honda-rc51/47839-rc51-sp1-520-gearing.html#post506873
 

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Discussion Starter #4
right, 15/40 16/43 might be similar gearing wise (although everywhere ive read says one tooth down on the front equals two up on the rear) but the 16/43 will need a longer chain.

right now i'm thinking either 108 or 110 links? i want to get this done tomorrow, so i'm either going to buy a tool or take it to the shop, so just want to cut it once.

thanks for that link.
 

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Discussion Starter #5
Between 104 and 106 links. :D
SP1 or SP2 swingarm?

Best to just locate the axle somewhere near the middle of the adjustment range, or maybe a little closer to the front, and just put the chain on and size it to fit.
That DID chain ain't going to stretch very much over it's life if you keep good slack.
Remember to grind of the rivet head before attempting to push the rivet out with a chain tool.
sp1 everything. you have 15/42 with 104-106 links, correct? wouldnt i need more links than that with 2 more sprocket teeth since im running a 16/43?aa

i'm leaning towards 108, just need assurance.
 

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Discussion Starter #6
Hmm well according to the online chain length calculators, with a 520 pitch, 16/43, and 23.5 in. From center of front to center of rear sprocket, 106 links should be the sweet spot. Sound good?
 

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Yes, 106 sounds good.
But I wouldn't cut it until you have fitted it on to make sure.

I have 106 links on my 15/42 with a 190/55.
Now the 190/55 is taller than your 180/55, but I really don't know by how much.
Your SP1 came stock with 16/40 and a 190/50 and 104 links. As an example, when I changed to 190/55 and 15/42, I was dangerously close to the swinger with the stock 104 links.



That's only abut 7mm of clearance, but a brand new tire. As it wore down, it was ok, but I soon converted to 106 links.
 

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Discussion Starter #8
Thanks guys. Ended up with 106 links with the axle in the center of the adjustment range. Now to go ride finally. Really looking forward to the lower gearing and 1/6 throttle!
 
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