Author Topic: Coefficient of Friction Comparison Tests, Continued  (Read 2225 times)

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Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #15 on: October 19, 2018, 01:33:34 PM »
"In my defense there were a few weeks of French and German drinking, I mean work"

Here's to ya, huskerlrrp, Cheers!

For the time being, CZ Forum Folk, my offer to huskerlrrp is open to anyone who'd like to send me a small sample of their favorite world-beater gun lube for EP friction coefficient testing. I apply the lube to the 3 ball bearings using a thoroughly-soaked "Q-tip" type gun cleaning swab, so just a dab (or ~0.1cc) is needed. Just send me a PM for shipping address, and figure out how to send a well-sealed quantity with correct/accurate labeling so it can be properly represented.
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Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #16 on: October 23, 2018, 12:49:15 PM »
Break Free CLP (dry) now tops the heap of "oily" (non-grease-type) lubes thus far tested on my homegrown 20 lbf on (3) 3/8" ball bearings Extreme Pressure friction test.
https://drive.google.com/open?id=1ZmJsIg9hxDvXQHvzIW97w8SwOCx94HaF
Thanks a lot, huskerlrrp: now I've gotta go back and do "after drying" retests of other contenders like Lucas Gun Lube!
Stay tuned...
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Offline huskerlrrp

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #17 on: October 25, 2018, 06:50:47 PM »
The pleasure is mine, thanks for doing this...besides CLP practically runs through my veins from contact exposure over 20 years ago.  O0

Offline Scarlett Pistol

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #18 on: October 30, 2018, 01:21:06 AM »
I?ve had some pure moly powder I ordered a few years ago sitting in my bin of lube and cleaning supplies. I?ve mixed it with other lubes in small amounts. Science supports moly but whatever you mix it with needs to be good as well. So I ordered some of the Amsoil sever gear.... I mixed it with some moly so it created a paste.

I have moly grease from CGW and this is a different viscosity. It really is like a super slick paste. I cleaned a few of my pistols as tried it out. I only use a drop on a toothpick and that spreads on most of a barrel where it contacts the slide. I don?t have any way to measure the effect, but it is freaking fantastic! It?s like ball bearings. Very nice like the CGW moly grease, but not as viscous or thick. It helped smooth out my actions as well.
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Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #19 on: October 31, 2018, 04:38:20 PM »
I?ve had some pure moly powder I ordered a few years ago sitting in my bin of lube and cleaning supplies. I?ve mixed it with other lubes in small amounts. Science supports moly but whatever you mix it with needs to be good as well. So I ordered some of the Amsoil sever gear.... I mixed it with some moly so it created a paste.

I have moly grease from CGW and this is a different viscosity. It really is like a super slick paste. I cleaned a few of my pistols as tried it out. I only use a drop on a toothpick and that spreads on most of a barrel where it contacts the slide. I don?t have any way to measure the effect, but it is freaking fantastic! It?s like ball bearings. Very nice like the CGW moly grease, but not as viscous or thick. It helped smooth out my actions as well.
Be happy to mix a bit of your moly powder with Severe Gear and run the test if you'd like to PM and send me a bit, Scarlett. Or send me a small sample of your optimized recipe of the two.

Meanwhile, the improvement from wet to dry of Break Free CLP motivated a retest of Lucas Gun Oil to see if the evaporation of vehicle might similarly improve its EP friction performance. The Break Free CLP had actually dried, to a "P" state but the Lucas Gun Oil didn't. The best you could say is that it could be rubbed "nearly" dry. Undaunted, I ran the test anyhoo and Lo- a new non-greasy champ, albeit not by a lot.
https://drive.google.com/open?id=1F3D865fKLe87GLkanA49uq0vuzTlB9vV
« Last Edit: October 31, 2018, 04:46:12 PM by PappaWheelie »
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Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #20 on: November 15, 2018, 01:43:11 PM »
https://drive.google.com/open?id=1VvttehQ1nxgEQFerSikWK7Iunb1hcofJ
EEZOX improves with drying, from CoF 0.17 to 0.16.
Amsoil Severe Gear (like Lucas Gun Oil), doesn't really dry, but can be wiped to near-dry, in which state (against bone-dry ball bearings at start of test in this case because one became dislodged and had to be cleaned to re-Superglue) its CoF lost a bit of ground from 0.13 (wet) to 0.14 ("dry").
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Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #21 on: June 10, 2019, 10:01:18 AM »
UPDATE 6/10/2019:
http://www.czforum.com/forum/index.php?topic=5566.msg24113#msg24113
Amsoil Dominator 15W-50 easily bests their V-Twin 15W-50 offering for Extreme Pressure Coefficient of Friction.
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Offline Hemiscorpius lepturus

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #22 on: June 11, 2019, 03:20:53 AM »
Motorcycle oils typically need to be wet clutch compatible, and thus are free of friction reducing agents or any EP compounds that can cause clutch slippage, it relies mainly on hydrodynamic lubrication to do its job, hence the high viscosity

Offline PappaWheelie

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Re: Coefficient of Friction Comparison Tests, Continued
« Reply #23 on: June 12, 2019, 12:15:03 PM »
Motorcycle oils typically need to be wet clutch compatible, and thus are free of friction reducing agents or any EP compounds that can cause clutch slippage, it relies mainly on hydrodynamic lubrication to do its job, hence the high viscosity
I hear ya Hemiscorpius lepturus, but a motorcycle's wet clutch is the farthest thing from extreme pressure! Spring pressure is carried by lots of friction pad area. But you seemingly agree with my hypothesis that V-Twin oil is seemingly targeted to Heavy Duty road bikes of Milwaukee origin. Dominator is also targeted for wet clutch bikes, however, where again, EP is incurred in many locations BUT the clutch, so I now question my hypothesis, especially in that (seemingly, on further reflection) these big Heavy Duty designs run separate primary drive lube, unlike many/most(?) "racing" platforms that start out as street bikes, having primary drive and clutch not isolated from gearbox, etc.
Whatever, I've topped up my SR500G with ~1/3 qt as of last night, and will be the Guinea pig for straight Dominator 15W-50 as of next oil change. Not that such a placid cruiser is a tough test...
UPDATE: ...and re. "hydrodynamic lubrication," isn't this term related to plain bearings, and don't the iconic Heavy Duty machines in question feature roller bearing / anti-friction bearing bottom ends (with Siamese or so-called "split rods" sharing common plane)?
« Last Edit: June 12, 2019, 08:58:06 PM by PappaWheelie, Reason: Added UPDATE re. "hydrodynamic lubrication" »
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