Chain length - Page 2 - Honda CBR250R Forum : Honda CBR 250 Forums
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post #11 of 18 Old 12-16-2015, 12:16 AM
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Quote:
Originally Posted by kiwi rider View Post
I'm going to fit a non-O'ring chain. which has less rolling resistance.
Not rocket science but an interesting mod all the same.
More maintenance though. That is the benefit of o/x/z ring changes. Less maintenance. Couldn't imagine having a non o-ring for my commuter.
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post #12 of 18 Old 12-16-2015, 02:32 AM
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Quote:
Originally Posted by Juzman View Post
More maintenance though. That is the benefit of o/x/z ring changes. Less maintenance. Couldn't imagine having a non o-ring for my commuter.
Yep, I agree, those chains are a great invention. However I don't commute, mainly sports riding and I was doing track days on it.
I was at the race track the other weekend and there was a guy there racing a Ninja 300, full on track bike, all the fruit etc.
He had a thin side plate, non-Oring chain on it that was so slim line I mistook it for a 428 conversion kit at first. He had it up on a paddock stand and spun the rear wheel for me. Well, it just kept going and going and going like the energizer bunny. Impressive.
I already have the chain in my garage so may as well bang it on, but sure it will require more regular tightening probably and wont last as long. Like most things, there's always trade offs.

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post #13 of 18 Old 01-05-2016, 04:39 AM
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Originally Posted by kiwi rider View Post
I didn't take links out of my chain because it was the original endless one and I wanted to keep it that way. ....
I got a 300R OEM chainset, today, for my 250R.
And I think, the chain-lenght is not really of concern.
Minimum for the first 10-15.000 km.

Here a picture to guess the diameter change compared to a 38T, that comes on top of the 36T's 2 links less on the sprocket



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post #14 of 18 Old 01-05-2016, 11:03 AM Thread Starter
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Originally Posted by kiwi rider View Post
Hey Lemmy, I ride a 300R and can tell you it has a 108 link chain standard. Ive dropped one tooth on my sprockets from standard and at 8K miles on the clock I'm nearly out of adjustment.

This is properly the answer I was looking for, if ordering a 14/36 set I would opt for the 106 chain length to allow for an optional 13T front without running out of adjustment.

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post #15 of 18 Old 01-05-2016, 12:07 PM
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Originally Posted by lemmy99 View Post
This is properly the answer I was looking for, if ordering a 14/36 set I would opt for the 106 chain length to allow for an optional 13T front without running out of adjustment.
For the 13/36 (custom), you need for 108 links (Check on gearingcommander.com ) just 4mm more! (to 14/36-108)
But with the 14/36 (current) but 106 links, you need almost 1 cm space, to the front. Direct after assembling it.





You have one more cm, from a new 108 link 14/38 combination, to the front?

I still have in mind, that I'll have to cut of 2 links in about 15000km . Maybe.
But till then, I do not see a problem with 14/36 and 108 links.

Ok, I just start seeing one:
108 links, 36 t = every chain link hit always the very same tooth on the rear sprocket
Now I remember, why I was usually looking for a 37t sprocket in steel.
Couldn't find one, all aluminium.
So106 links would be better!
But only 26 hp and a 520 chain
;-)
ok, will report later
Attached Images
File Type: jpg gearing.jpg (42.5 KB, 38 views)
File Type: jpg gearing-106.jpg (42.6 KB, 38 views)

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Last edited by CBR-250-R; 01-05-2016 at 12:55 PM.
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post #16 of 18 Old 07-06-2016, 07:34 AM Thread Starter
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Just to finish off this thread


Bought a new (CBR300) 14/36 combination, runs ok but not quite my style, so changed to 13/36 which is just under standard +2% and it works for me.


Pic below are for the 13/36 on 108 link chain (no adjustment left at all) and after I removed I link pair and fitted an VX heavy duty master link. (106 link chain).

Cant upload any pics at the moment, just lets say, 13/36 on 108 link chain is a max adjustment and 13/36 on 106 link chain is at minimum adjustment

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Last edited by lemmy99; 07-06-2016 at 04:25 PM. Reason: Amend sprocket sizes
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post #17 of 18 Old 07-06-2016, 09:28 AM
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Assuming you meant a 36 tooth rear (you wrote 46)?

Setting aside the chain length issue, and comparing the ratios of these sprocket combinations, there isn't much of a difference in final drive ratio after changing to the 13/36...

13/36 = 2.769

14/38 = 2.714 (stock)


Not much of a net change... dropping one tooth on the front and two on the rear basically cancelled each other out.

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post #18 of 18 Old 07-06-2016, 04:23 PM Thread Starter
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Mike,

I wanted to see what the 14/36 CBR300 was like, to tall for me personally and 13/38 was too low when i tried it last year, so i was left with with an as new 13T front after i returned the gearing to stock.

When the chain set wore out and i had to cut out a link from the std chain to gain some adjustment it was time for some new parts.

I managed to score a brand new endless 108 chain and 36T rear from a 0 mile breaker on ebay for 35 and a 14T front for 9.95. ( a full DID O-rng set n the uk is 98.0)

I tried the 14/36 and then went to the 13/36 as a compromise, i now have a as new 14T front in stock for the change back to 14/38 in 9-10 thousand miles time when the 13/36 wears out.

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