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Old 12-28-2012, 03:31 PM   #8296
KamperBob
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Chain stretch

As some may recall in late August @24k miles I replaced the rear sprocket and chain on my 2006 XT225. (The sprocket was 45T stock size but aftermarket brand.)

Instead of another O-ring chain I bought two standard (unsealed) chains. Chain #1 was replaced in late October @26k miles. It measured 60.375" long. Chain #2 new measured 60" long. So it stretched 0.375" or 0.63% in 2k miles. Chain #2 was replaced today (late December) @28k miles. It measured 60.25" so stretch was 0.25" or 0.42% in 2k miles.

Caveats:
* While mileage was similar between these two intervals road/trail conditions were very different. So this isn't really a "fair" comparison. Still some might be interested in these measurements anyway.
* In both cases the "other" chain gets washed in gas (kerosene not readily available). Then after drying soaked in 30W oil for at least a week. Then drip dried before reinstallation.

The experiment continues. Going forward I'll keep a close eye on chain and sprocket wear during round #2 for both chains. I can swap sooner (ie, every 1k miles) if needed. Meanwhile, Plan A is to keep playing leap-frog between both chains every 2k miles.

Cheers
Bob
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Old 12-28-2012, 05:15 PM   #8297
kewlbyme
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Quote:
Originally Posted by KamperBob View Post

The experiment continues. Going forward I'll keep a close eye on chain and sprocket wear during round #2 for both chains. I can swap sooner (ie, every 1k miles) if needed. Meanwhile, Plan A is to keep playing leap-frog between both chains every 2k miles.

Cheers
Bob
Interesting. I missed the set up.

Any surface cleaning or lube between swaps?

Any sign of sprocket wear?

I will look for updates.



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Old 12-28-2012, 05:52 PM   #8298
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Quote:
Originally Posted by KamperBob View Post
As some may recall in late August @24k miles I replaced the rear sprocket and chain on my 2006 XT225. (The sprocket was 45T stock size but aftermarket brand.)

Instead of another O-ring chain I bought two standard (unsealed) chains. Chain #1 was replaced in late October @26k miles. It measured 60.375" long. Chain #2 new measured 60" long. So it stretched 0.375" or 0.63% in 2k miles. Chain #2 was replaced today (late December) @28k miles. It measured 60.25" so stretch was 0.25" or 0.42% in 2k miles.

Caveats:
* While mileage was similar between these two intervals road/trail conditions were very different. So this isn't really a "fair" comparison. Still some might be interested in these measurements anyway.
* In both cases the "other" chain gets washed in gas (kerosene not readily available). Then after drying soaked in 30W oil for at least a week. Then drip dried before reinstallation.

The experiment continues. Going forward I'll keep a close eye on chain and sprocket wear during round #2 for both chains. I can swap sooner (ie, every 1k miles) if needed. Meanwhile, Plan A is to keep playing leap-frog between both chains every 2k miles.

Cheers
Bob
Cool Stuff, KamperBob, interestingly, I have the same maintenance routine on my commuter bicycle. I swap chains (but not sprockets) approximately every 6 months or 2200km's, and after 2 years, or two rotations on both, I replace the whole drive train.
I know this'll make me sound like a know it all, but chains don't actually stretch, they develop play between the rivets and the plates.
Now, if only we could turn the rear sprocket over, think of the tooth life!
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Old 12-28-2012, 10:59 PM   #8299
Tom S
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Quote:
Originally Posted by KamperBob View Post
... chain gets washed in gas (kerosene not readily available).
Bob, I may be wrong but I think that the point of cleaning the chain with kerosene is for O-ring chains as other stuff, including WD-40, is supposed to be hard on the O-rings.
If you really want kerosene, as chain makers recommend, I believe that you could substitute diesel fuel. Diesel is at most any gas station & nearly the same thing as kerosene.
I read that one main difference between kerosene & diesel is that kerosene does not have the lubrication properties that diesel does. Kerosene is added to diesel fuel to winterize the diesel.
Last time I cleaned an O-ring chain real good I had a small amount of cleaning solvent in a gallon jug. I mixed some diesel in with it to have enough to submerge the chain & shake it around & so on.

As for soaking the chain in oil....
Years ago before they made O-ring chains I would put the chain in a pan of oil & heat it on the stove. Must have read that method in a MC magazine.
(X-)Wives love it too.
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Old 12-29-2012, 06:15 AM   #8300
inroads
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WD 40 has changed its formula somewhat thru the years.You use to be able to spray it into the intake almost like some diluted ether and have the bike fire off.
Today's stuff is more tame.My point is: I use wd 40 extensively as a cleaner to keep my o-ring chain clean as to not ever get to a build up.I believe the problem with most chain lubes is they are not wiped clean after application and then tend to attract dirt.
So I have gotten to the point since I ride off road often to just use wd-40 liberally and wipe clean after use.
Many bikes and many years of WD-40 o-ring use with good results.But you do have to apply twice as often as chain lube.
I do not believe todays WD-40 hurts O-ring chains.
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Old 12-29-2012, 07:28 AM   #8301
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Quote:
Originally Posted by kewlbyme View Post
Interesting. I missed the set up.

Any surface cleaning or lube between swaps?

Any sign of sprocket wear?
No visible sprocket wear. I don't clean the chain between swaps. I spray teflon/silicon lube into links and rollers whenever it seems prudent.
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Old 12-29-2012, 07:36 AM   #8302
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Quote:
Originally Posted by woofer2609 View Post
Cool Stuff, KamperBob, interestingly, I have the same maintenance routine on my commuter bicycle. I swap chains (but not sprockets) approximately every 6 months or 2200km's, and after 2 years, or two rotations on both, I replace the whole drive train.
I know this'll make me sound like a know it all, but chains don't actually stretch, they develop play between the rivets and the plates.
Now, if only we could turn the rear sprocket over, think of the tooth life!
Cool - thanks!

I'm skeptical about flipping sprockets over. Offset is an immediate obstacle.

Chuckle. I'm okay calling the increase in length of the whole chain stretch. It's measurable. That's the point. Marks on the wheel adjustor give another indication.

"If you cannot measure it, you cannot improve it." --Lord Kelvin
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Old 12-29-2012, 08:00 AM   #8303
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Quote:
Originally Posted by Tom S View Post
Bob, I may be wrong but I think that the point of cleaning the chain with kerosene is for O-ring chains as other stuff, including WD-40, is supposed to be hard on the O-rings.
If you really want kerosene, as chain makers recommend, I believe that you could substitute diesel fuel. Diesel is at most any gas station & nearly the same thing as kerosene.
I read that one main difference between kerosene & diesel is that kerosene does not have the lubrication properties that diesel does. Kerosene is added to diesel fuel to winterize the diesel.
Last time I cleaned an O-ring chain real good I had a small amount of cleaning solvent in a gallon jug. I mixed some diesel in with it to have enough to submerge the chain & shake it around & so on.

As for soaking the chain in oil....
Years ago before they made O-ring chains I would put the chain in a pan of oil & heat it on the stove. Must have read that method in a MC magazine.
(X-)Wives love it too.
You may be right.

I considered diesel but that would take another container. Whereas I have a gas can with (full time RVer) and I'm satisfied that's good enough. It's just solvent to break down gunky old oil so dirt particles can be swished out of the works and make way for fresh lube. Once dried gas residuals can't contaminate a bowl of clean oil too badly. That's my thinking anyway. Heck, my "clean room" these days is a picnic table...when dust isn't blowing. LOL
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Old 12-29-2012, 08:04 AM   #8304
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Posting pix

I'll try to post some pix today. I don't see an "attach" option and my website FTP is down (temporarily I hope). Maybe it's time to set up one of them thare web-pic-share account thingiemajiggers. What do members here prefer - flicker, photo bucket, smug mug, something else?

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Old 12-29-2012, 08:28 AM   #8305
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I guess they are all about the same, but I have been using Photobucket. It's simple enough for me.

What is "FTP"?
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Old 12-29-2012, 08:37 AM   #8306
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Quote:
Originally Posted by GlennR View Post
I guess they are all about the same, but I have been using Photobucket. It's simple enough for me.

What is "FTP"?
FTP is to websites sorta like the overhead door is to a garage. Much more appropriate for moving big things in and out. Whereas the pass-through door is sorta like browsing if I'm gonna flog that analogy. LOL (I think FTP is short for File Transfer Protocol.)

I started exploring Flickr this AM but I'll play with Photobucket too. Thanks!
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Old 12-29-2012, 08:38 AM   #8307
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Quote:
Originally Posted by KamperBob View Post
I'll try to post some pix today. I don't see an "attach" option and my website FTP is down (temporarily I hope). Maybe it's time to set up one of them thare web-pic-share account thingiemajiggers. What do members here prefer - flicker, photo bucket, smug mug, something else?

I have noticed the updated photobucket does not work with Opera which is my preferred browser. I understand the owner of this site owns smug mug??

Travis28715 screwed with this post 12-29-2012 at 08:43 AM Reason: more info
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Old 12-29-2012, 08:46 AM   #8308
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Pic test

Let's see if this works...


Woot - since that worked pretty well here's the caption. Left is late Oct 2012 hung from a sign post. Middle is late Dec 2012 hung from a tree. Right follows. Top is new length of Chain #2 (taken Oct). Middle is length after first 2k miles wear on Chain #2 (Oct). Bottom is same for Chain #1 (Dec).
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Old 12-29-2012, 09:17 AM   #8309
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Quote:
Originally Posted by KamperBob View Post
FTP is to websites sorta like the overhead door is to a garage. Much more appropriate for moving big things in and out. Whereas the pass-through door is sorta like browsing if I'm gonna flog that analogy. LOL (I think FTP is short for File Transfer Protocol.)

I started exploring Flickr this AM but I'll play with Photobucket too. Thanks!

My website is hosted on Weebly.com I don't think I have to use FTP with it, but maybe it's called something different there. It was the simplest DIY & free website host that I could find when I created my site. I didn't want to learn the HTML stuff or pay somebody, since I figured it would need ongoing revisions.
I did'nt have to use an image host, like Photobucket. But I did use a slideshow, which utilizes Flicker.
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Old 12-29-2012, 10:21 AM   #8310
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No image coming through for me, says "currently unavailable".
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