Honda CG Chain and Sprockets

[BikeNewbie]

Hello,

Does anyone know how many links are on the chain and how many teeth are on the sprockets for a Honda CG 125 07.

Also what is the max and min links and teeth I can have on both?

Thanks.

[BikeNewbie]

Bump.

[tomh]

https://www.jtsprockets.com/catalogue/model/136

Front: 14t
Rear: 45t

Chain length: 116 links

Search eBay for CG125 ES Chain and Sprocket

[tahrey]

But I've just seen a supposed CG ES 14/45 kit that's got a 120 link chain?



Have they made a balls-up, or is there a chance that there's some structural difference between certain generations of the bike design that means one year needs 120 when another needs 116?

I've seen it with some of the others too... presuming all else is equal, what matters most is the number of teeth on the roughly one-half of each sprocket the chain goes around, right?

But there's a 14/45 with 116, and another 120 links... and a 14/41 with 110, and with 114. (Any significance to these both being 4 links different, despite the sets being 6 links different overall?)

Then we have:
14/45 (= 7+22.5 = 29.5 = 30) with 116 or 120
15/44 (= 7.5 + 22 = 29.5...) with 116
14/44 (= 7+22 = 29) with 116
14/43 (= 7+21.5 = 28.5) with 116
14/41 (= 7+20.5 = 27.5) with either 110 or 114. Should be approx 2 less than 14/45, both as it's 4 teeth less and seeing as chains only seem to come in even numbers for some strange reason... so, 114 or 118, not 110 or 114?
15/36 (= 7.5 + 18 = 25.5) with 112
15/34 (= 7.5 + 17 = 24.5) with 100... yes 100, not 110.

Errrrrrr?

Going by the chain length calculator linked in another thread, and assuming no slack in the thing at all, that gives...

14/45 with 21.5 or 22.5 inches between sprocket centres
15/44 with 21.5 inches
14/44 with 21.625 inches (?!)
14/43 with 21.75 inches
14/41 with with 20.5 or 21.5 inches
15/36 with 21.5625 inches (no seriously)
15/34 with 18.8125 inches (...)

So I can follow 14/45 with 116 down to 14/43 with 116 and 14/41 with 114, along with the 15/36, as those differences are only about 6mm max, the equivalent of half of one link... but what's going on with the longer, shorter, and much shorter ones?

And which one should I believe if I'm going to alter the gearing on mine a bit? Probably to one of the above, at least... but I've never had a problem so far making it pretty tight when adjusting, then having to slacken off; should I count how many links I already have then add two?

Plus, does this all include the split link? And is there such a thing as an endless chain any more? Cuz my currently fitted one doesn't appear to have a splittable link anywhere. Getting the rear wheel on and off involves undoing the spacers and brake, pushing the wheel as far forwards as possible in the frame, and lifting the chain off the sprocket to hang all folded up on the floor.

[tahrey]

Long term re-bump, as I'm finding very little else on this topic here when searching ahead of making a new, vaguely related thread:

Finally at the point of trying to fit my 44t rear sprocket, with 15t front and new 120-link chain.

Chain is decidedly slack even without comparing to the old one, after pulling it through and doing a test-fit with the 15t front and old 45t rear. It's pretty much hanging off the bike, and drags/bangs/makes a variety of scrapey noises when I turn the wheel by hand. Way, way too long.

I think 116t is probably about spot-on for 14/45, but I'm still going to cut it down one (two?) link/s at a time just to be sure. Assuming the new sprocket will even go on, and my horrendously cheap chain breaker proves up to the task. I can see myself having to use the included springlink rather than the optional rivet-link I bought at the same time.

[Mark65]

116 link is right, cut it down, 14-45 sprockets for my 07, grind pin to remove links, they send chains out with more links to cover more makes and models of bikes, probably cheaper than to cut and mess about with them at factory, mine was around 120 as well from DID.
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[tahrey]

Yep, I used my shit-ass little Lidl dremel to grind the rivet heads off the old one, but found the breaker pin started to bend before pushing it all the way out. This might therefore be suboptimal for shortening a chain I want to use, rather than just separating one that's going in the bin once it's pulled through... :/

[Mark65]

When I ground the heads off I put the link in a vice between wooden blocks and used a thin drift to knock it out.
____________________
07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[tahrey]

That's good advice, sadly I possess no more than 50% of those things, possibly less.

[Mark65]

You can pick up old drifts and many good tools ( not Chinese crap) from car boot sales and egay.
____________________
07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650