Anyone done a 14/40 sprocket combo? - Kawasaki Versys Forum
 
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post #1 of 12 (permalink) Old 04-29-2011, 12:08 AM Thread Starter
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Anyone done a 14/40 sprocket combo?

I am posting on behalf of the fella, a new member here (HalfmyLife), who bought my 2007 V. He has to wait 48 hours to post again, and is chomping at the bit.

He contacted me with a few questions about maintenance history and we got talking about sprockets. I mentioned that I had put a 14 tooth on the front, but that he might prefer a 15, or even a 16 as he commutes on the highway. I had told him that the next maintenance item would likely be the rear sprocket, which could be changed with the next chain.

Anyways, long story short, he has asked for the collective wisedom of keeping the 14 tooth front, and putting a 40 tooth on the rear. That gives him basically the same ratio as a 16/46 IIRC. I suggested that he would likely have to remove a link or two from the chain for that combo, and didn't think anyone had done such a combo before. I would think the bigger gears would be better for chain life as well, but what does the collective think?

Can you get away with running a 14/40?



.

2007 Versys Black, V35 Bags, H&B Bars, Skidmarx Hugger.Fender Ex., Avon Distanzia, Braided Lines, Hella 65W bulbs Arrow Can, DNA Air filter, GIVI tall screen (for winter), PCIII, Baldwin Saddle. **SOLD**

2011 KTM SM-T. Crash bars, E55 Top Box, Fender extender front and rear.

Last edited by Red Herring; 04-29-2011 at 12:13 AM.
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post #2 of 12 (permalink) Old 04-29-2011, 03:22 AM
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How many Kms on the sprockets and chain? I'd suggest 14/41 (0.341463) instead, resulting in a tad taller than 15/44 (0.341)... 14/40 (0.350) is a bit taller still than 16/46 (0.347826).
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post #3 of 12 (permalink) Old 04-29-2011, 07:46 AM
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I have no calculations to back it up, but by going so small on both sprockets you might need to shorten the chain.
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post #4 of 12 (permalink) Old 04-29-2011, 07:50 AM
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Yes, probably one link (2 pins) shorter.
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post #5 of 12 (permalink) Old 05-01-2011, 12:29 PM
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Finally

I thought that I need to remove a couple of links, im looking foward to seeing how the Bike runs with the new sprock. thanks for you replies

Last edited by Halfmylife; 05-01-2011 at 12:56 PM.
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post #6 of 12 (permalink) Old 05-01-2011, 09:24 PM
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With 14/41 sprockets, about 3 pins (1.5 link) shorter would keep your rear axle at the same place. So, either 1 or 2 links shorter would work.
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post #7 of 12 (permalink) Old 05-01-2011, 10:45 PM
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thanks, I'll take 2. my chain has 10 000 kms. should i replace it, it looks fine?

Last edited by Halfmylife; 05-01-2011 at 10:52 PM.
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post #8 of 12 (permalink) Old 05-01-2011, 10:51 PM
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I'd replace both sprockets and the chain... Can you just put the original 15T back on until you're due for a new set?
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post #9 of 12 (permalink) Old 05-02-2011, 12:00 AM
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Quote:
Originally Posted by Halfmylife View Post
thanks, I'll take 2. my chain has 10 000 kms. should i replace it, it looks fine?
I must be missing something. If the chain and sprockets look fine, why are you going to replace them? If you want taller gearing, replacing the rear (43T) or the front (16T) will give you the same overall final ratio. In general, for better chain longevity, the larger the sprockets the "happier" your chain will be.

By most accounts, the Versys chain will go ~20K miles with minimal care and some have been going to almost 30K miles.


Gustavo


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post #10 of 12 (permalink) Old 05-02-2011, 10:04 AM
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The rear sprocket is original and the front is newish, I figured why replace the front when its has already been changed out. I will be doing alot of hwy km's on her and would like taller gearing because right know I am getting 34-36 mpg due to the shorter gearing, rich power commander setting's and my riding style. I'm just trying to keep my cost's down (wife is wondering when this will be cheaper then the car, and its not at the current mpg).
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post #11 of 12 (permalink) Old 05-02-2011, 10:22 AM Thread Starter
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Then buy a 16T front sprocket for $25 and change out the works with the next chain in 10 or so thousand KM. That's your cheapest and best alternative, The rear sprocket is still fine.

2007 Versys Black, V35 Bags, H&B Bars, Skidmarx Hugger.Fender Ex., Avon Distanzia, Braided Lines, Hella 65W bulbs Arrow Can, DNA Air filter, GIVI tall screen (for winter), PCIII, Baldwin Saddle. **SOLD**

2011 KTM SM-T. Crash bars, E55 Top Box, Fender extender front and rear.
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post #12 of 12 (permalink) Old 05-04-2011, 10:58 PM
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I just completed the 14/40 mod on my bike and it works really well, yes it did end up costing me more to change out the rear sprocket vs the front but I thought it would be easier to change the back, my speedo is now correct as well. Also, ended up removing 2 links, which ended up being and interesting process (my 10year olds small hands really helped). thanks everyone for the outstanding advice!
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