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Old 05-25-2008, 11:01 PM   #1
klm4755 OP
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Chain O-ring WD-40 exposure effects study and results

Enclosed is a study to examine the effects of Chain link O-ring exposure to various solvent, cleaners, and lubrications. Many “home grown” solutions exist as to the best method to clean and lube an O-ring type chain. Most popular is the usage of WD-40. The intent of this study is to determine if WD-40 and other commonly used chemicals are detrimental to the chains o-ring and it’s function. The study will consist of 4 parts:
1. Test set-up and controls
2. Short term continuous exposure results. Short term will be defined as 24 hours
3. Long term continuous exposure results. Long term evaluations will occur at regular intervals (monthly?) till a conclusion can be reached.
4. Study conclusion.

Part 1


Start all projects by reviewing relevant data related to the mod/topic


The source of the O-rings. DID master link from a 520 type chain.


extract the 8x O-rings for the study


set up an exam area. Did consider weighing the O-rings, but sold my gram scale when completed college......Hehehe Good times!


Evaluate, measure and record the dimensions. This case inner diameter with an adjustable ball gage. Dimensions are use to check for O-ring swelling.


check dia of ball gage. Inner dia = .227 inch


outer diameter =.356 inch


thickness = .073 inch


record dimensions


macro view of O-ring


O-ring side view


The 7x Fluids to evaluate


The container list: 1. WD-40, 2. Kerosine, 3. Gasoline, 4. LPS-3, 5. DOT 4 brake fluid, 6. PJ1 Chain lube, 7. Gumout carb cleaner


adding the fluids to the cavities


ready for O-ring insertion


Mark date and install O-rings


wrap-up container and store in garage.

Part 2
After 24 hours the O-rings were removed and examined visually for signs of distress. Quick comparison of all O-rings with the control O-ring some signs of swelling.
Each O-ring was squeezed and released to evaluate the elasticity and for signs of brittleness.


O-rings after 24 hours


removing the WD-40 exposed O-ring


WD-40 exposed O-ring ready to dry and evaluate


WD-40 exposed O-ring optical enhanced examination. Looks A-ok


measure thickness of WD-40 exposed O-ring


measure outer diameter of WD-40 exposed O-ring


WD-40 on left air exposed control on right


detail results of review on form


Repeat steps for Kerosene (Kerosene on left, air on right)


Repeat steps for Gasoline (Gasoline on left, air on right)


squeeze test for elasticity evaluation


Repeat steps for LPS-3 (LPS-3 on left, air on right)


Repeat steps for Brake Fluid (Brake fluid on left, air on right)


Repeat steps for PJ1chain lube (PJ1on left, air on right)


last sample....Grandama is still looking for her pill box....hehehe


Repeat steps for carb cleaner (carb cleaner on left, air on right)



Table of results
Conclusion of short term exposure:
1. Carb cleaner and Gasoline samples swelled to significant sizes. Definitely not recommended to use these fluids to clean an O-ring type chain. The carb cleaner exposed O-ring increased in diameter by 29%! The gasoline exposed O-ring increased in diameter by 11%.
2. WD-40, and Kerosene seem to have negligible to no effect on the O-rings (+/-1%)
3. Brake fluid, and PJ1 chain lube seem to have a negligible to small effect on the O-ring’s size.


Ready to ride
Keithm
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Old 05-26-2008, 12:46 AM   #2
Klay
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Interesting. I think I'll stick with kerosene for chain-cleaning.
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Old 05-26-2008, 03:16 AM   #3
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What's next? Going to determine once and for all which oil is best, putting an end to all those threads?

Nice work!
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Old 05-26-2008, 07:10 AM   #4
deaconjones
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Old 05-26-2008, 07:31 AM   #5
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Nice..

I'm surprised brake fluid didn't destroy the o-rings..
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Old 05-26-2008, 07:43 AM   #6
fallzboater
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You could actually test elasticity and/or tensile strength with some wire and weights. Might be intersting.

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Old 06-02-2008, 06:03 PM   #7
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Nice..

I'm surprised brake fluid didn't destroy the o-rings..
If it did all your brake system parts and hoses would be dead .
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Old 06-14-2008, 04:31 PM   #8
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Quote:
Originally Posted by klm4755
Holy crap. You know, it's a KLR, not a submarine.
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Old 06-14-2008, 09:18 PM   #9
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Quote:
Originally Posted by wyowillys46
Holy crap. You know, it's a KLR, not a submarine.
You gotta hide the porno stash somewhere you know she will NEVER look...
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Old 06-15-2008, 03:01 AM   #10
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Nice attempt at a "scientific" approach.

The only thing I used on my DR650s' (s- as I've owned a 91 and 97) was spray on silicone. Worked great as a cleaner and lube and since the o-rings are of a silicone compound it just always made sense to not mix compounds to me.
I'd clean/lube with the stuff every 1,000 miles and routinely get between 15 and 20,000 miles per chain/sprocket combo. Not bad factoring in all the water crossings and river grit.

Shame I didn't find what I was looking for here in regards to my chain wear search, though!

Good Job but, there's just sooo many variables to consider.
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Old 06-15-2008, 06:26 AM   #11
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Great report, this would end up some eternal debate on chain cleaning
Great work
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Old 06-19-2008, 11:35 AM   #12
klm4755 OP
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Quote:
Originally Posted by gboezio
Great report, this would end up some eternal debate on chain cleaning
Great work
Thanks! part II test results are shown here:
http://www.advrider.com/forums/showthread.php?t=350310

I consider a 20% reduction in O-ring strength, due to WD-40 usage, a concern. I'm considering a part III test to evaluate the degeradation of the O-ring OEM grease within the link it's self.
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Old 01-10-2012, 01:54 AM   #13
aryapradana
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whoa i just red about the test using wd-40. a lot of my friend told me that wd-40 is good for cleaning, but since it's a penetrant, they told me that is not good using it for lubricating chain. a chain lube is better
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Old 01-11-2012, 04:29 AM   #14
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interesting. Thanks for the experiment
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Old 04-17-2012, 12:46 AM   #15
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Thanks for taking the time.
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