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Author Topic: Rear Sprocket Sources  (Read 3705 times)
stopintime
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S2R 800 '07


« Reply #15 on: April 03, 2020, 11:46:12 AM »

Don't trust a site, or the results given within, which lists 107 links as an option. (links are sold in pairs)

Check Gearingcommander for exact numbers (even though they also, occasionally, talk about strange link numbers)

From 42 to 45 is larger, but only on one half of the sprocket. 1.5 tooth longer. Plus the 0.5 change from 14 to 15. Two links longer chain (tell me if I'm wrong)
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237,000 km/sixteen years - loving it
TJR178
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2004 Monster S4R, 2010 HD FLHRC


« Reply #16 on: April 03, 2020, 11:55:58 AM »

OK, thanks.  I knew links come in pairs (forgot to mention that), but was just noting the calculator.

Rechecking Gearingcommander...
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stopintime
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S2R 800 '07


« Reply #17 on: April 03, 2020, 12:01:51 PM »

.... damn, now I don't trust my own numbers. Checking too.  Undecided



EDIT: no, I'm good  waytogo
« Last Edit: April 03, 2020, 12:07:44 PM by stopintime » Logged

237,000 km/sixteen years - loving it
Speeddog
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RIP Nicky


« Reply #18 on: April 03, 2020, 01:17:59 PM »

IMO
For most riders
If you snuck in their garage one night and changed their bike up/down one tooth on the back
They'd never notice
Typical freeway cruise, one tooth is a 100 rpm difference
1 needle width on the tach
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stopintime
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S2R 800 '07


« Reply #19 on: April 03, 2020, 01:45:26 PM »

I agree, but also have another spin on how this can feel..... add one more tooth, up four now, and you're VERY close to the total difference between fifth and sixth / having 'lost' sixth all together  Grin
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S21FOLGORE
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« Reply #20 on: April 03, 2020, 02:50:36 PM »

Ok, I did some research on hunting tooth and found this calculator: https://www.blocklayer.com/chain-sprocket.aspx

According to this, I'd be good with a 15T front and a 45T rear (gets me the same ratio I have now, which I like).  Now, the optimal wear rate is at 100% as long as I don't go over 107 links on the chain.  Stock is 104 links  I'm not exactly sure how many links I would need to add if I went to this setup, though...

Thoughts?

Don't use those calculators.
Don't try to order the chain cut "exactly what I'd need" length.
I wrote this many years ago

http://www.ducatimonsterforum.org/index.php?topic=71572.msg1321563#msg1321563
(Although all photos are gone, Youtube videos are still there.)



Just buy full length chain, and put it over a set of new sprockets.
No need to calculate anything, and most importantly, you won't get "too short" chain this way.

So, stop messing around with calculators and stop wondering how many links you'd need.

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TJR178
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2004 Monster S4R, 2010 HD FLHRC


« Reply #21 on: April 04, 2020, 04:17:10 AM »

Thanks, all!  I think I'm good to go now.  I appreciate everyone's help.  Good to be back on the board after a 7 year hiatus.
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