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"A POSSIBLE TRACK CLEANING SOLUTION"

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Posted by Overmod on Tuesday, April 6, 2021 9:58 AM

Interesting that the link as posted is invisible -- that may be some ad blocker at work.  There appear to be several redirects through information-harvesting sites before the information actually resolves.  The actual link is to this:

https://www.canadiantire.ca/en/pdp/crc-electronic-cleaner-128-g-0381712p.0381712.html

Anazing the amount of tracking data presumably about Wayne and his preferences that I had to remove even from the final page URL to be able to post it 'non-doxxingly'... Angel

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Posted by doctorwayne on Tuesday, April 6, 2021 12:36 PM

Overmod
Interesting that the link as posted is invisible -- that may be some ad blocker at work.

Perhaps, but it's visible to me and does work, too.  I wonder if the "upgrade" of this forum will address issues like this?

Wayne

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Posted by Lastspikemike on Tuesday, April 6, 2021 2:33 PM

SeeYou190

 

 
Overmod
Technically, heptane is almost like an anti-gasoline; it is the substance that is the reference for zero octane in fuel rating 

 

I always thought Propane was the reference for zero Octane, oh well. I don't miss trying to explain how the Methane Number is different for natural gas than the Octane Number for gasoline.

 

 
Lastspikemike
For when the duck tape runs out of stick. Which it does in sunlight and enough rain.

 

You need to buy better quality duct tape. Compromise elsewhere.

-Kevin

 

Heptane is zero octane. It is the reference fuel found in all gasolines as far as I know. Literally, heptane has zero anti knock enhancement (duh) because it has no anti knock additives. It can still be used as fuel in a spark ignition engine, just not at very high compression ratios. Ironically, anti knock additives reduce power that is only regained by raising the compression ratio.

Iso octane is added to yield the AKI (RON + MON / 2) posted on fuel pumps in North America. The index refers to the percentage of iso octane added to heptane to get the desired number. The percentage is the anti knock number.

Propane AKI is over 100, just btw. The AKI exceeds 100% because the actual fuel measured for octane numbers  isn't constituted just from heptane and iso octane. The reference fuel yielding the index is heptane and  octane.

And all brands of duck tape degrade in sunlight and rain/snow. At least it does at 1000 m elevation where I live.

Alyth Yard

Canada

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Posted by TrainsRMe1 on Tuesday, April 6, 2021 9:11 PM

Cool My RailFriends                                                                                                  Here is the news, I'm happy to say that the CRC 2-26 is a suscess!!! I sprayed some on folded sheet on paper towels, wipe it on the track and vioa!! perfect connection!!!!!

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Posted by Mark R. on Tuesday, April 6, 2021 9:41 PM

Is the CRC product in the Canadian Tire link the same stuff ? There is no mention of the 2-26 aspect on the can. I'm assuming it probably is, but we all know what can happen when we assume ....

Mark.

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

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Posted by SeeYou190 on Tuesday, April 6, 2021 10:40 PM

Lastspikemike
Literally, heptane has zero anti knock enhancement (duh) because it has no anti knock additives.

This is another one of the topics where you are talking like an expert when you obviously are not.

-Kevin

Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

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Posted by Lastspikemike on Wednesday, April 7, 2021 8:49 AM

SeeYou190

 

 
Lastspikemike
Literally, heptane has zero anti knock enhancement (duh) because it has no anti knock additives.

 

This is another one of the topics where you are talking like an expert when you obviously are not.

-Kevin

 

???

Heptane is a component of gasoline. The anti knock characteristics of any gasoline formulation are as compared to a standard test (two tests actually which are averaged for North American pump postings). The standard test is derived from testing knock characteristics of Heptane modified by adding iso octane. For fuels with knock resistance above 100 the additional anti knock characteristics  would have to be extrapolated. The octane rating is expressed as the percentage of iso octane required to achieve a measured level of resistance to knocking. Actual anti knock additives include many other chemicals, the most famous of which is "lead" which is if course not literally lead (quite poisonous tetra ethyl lead). The actual anti knock performance of these additives is compared to that of the actually tested heptane/iso octane scale.

Now I didn't start the debate about heptane...somebody suggested heptane was not "gasoline" but it is of course almost by definition. For the octane rating test gasoline is assumed to be 100% heptane with an anti knock rating of zero. 

The actual discussion was about electrical contact cleaning fluids beginning with the ubiquitous WD40.

Alyth Yard

Canada

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Posted by snjroy on Wednesday, April 7, 2021 8:59 AM

Overmod

 

 
SeeYou190
I spray the CRC onto a paper towel and wipe the track with that.

 

Be sure you're wearing gloves impervious to the solvents (probably at least 4mil nitrile or chloroprene) and be very careful not to breathe the overspray and spent propellant that the paper towel doesn't catch.  And wrap the "applicator" up in something like a plastic grocery bag afterwards to minimize 'human contact exposure' Smile...

 

 

That is precisely why I avoid these toxic products. My solution: keeping tracks accessible (a design issue), using rubbing alcohol and a rag to clean the track, and running trains daily to remove corrosion.  The last technique is my favorite Smile.

Simon

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Posted by Overmod on Wednesday, April 7, 2021 2:42 PM

Once again, goddamned Kalmbach is erasing post after post as they screw with something, and I have no more family-friendly tolerance today for their demonstrated incompetence.

The one thing correct in this farrago is that it was not right to 'correct' Mike for posting that a product containing a considerable proportion of straight-chain heptane would not behave like 'gasoline' as a solvent.  Most gasoline does, in fact, contain a significant percentage of n-heptane, and many of the associated characteristics (and health risks) will be common between heptane and 'gasoline'.

Most of the rest is just wrong in a variety of ways.

Heptane is arbitrarily ASSIGNED a 'knock index' of zero, as a pure reference, representing propensity to knock if it were the only fuel fed to an engine.  Likewise the iso-octane with IUPAC name 2,2,4 trimethylpentane is assigned an index of 100, representing its behavior if it were the only fuel in an engine.

This does not mean that 'gasoline' bought as a fuel is a proportional mixture of those specific hydrocarbons.

Straight-chain octane is NOT the material used as the upper-end reference in these tests.

As with the Centigrade temperature scale, there are plenty of prospective 'fuels to be burned in a combustion engine' with detonation propensity far greater than heptane, or far greater than 2,2,4 trimethylpentane.

Additives are often provided in motor fuel that affect its "octane number" however that number is calculated or determined.  These may include promoters or 'antiknock additives' such as tetraethyl lead.  These of course have nothing to do with either heptane or any eight-carbon hydrocarbon.

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Posted by SeeYou190 on Wednesday, April 7, 2021 2:46 PM

This thread was about track cleaning for our model trains.

Spraying contact cleaner, in small amounts, onto a paper towel and wiping the rails is a usual and effective way to do this.

TrainsRMe and CNR378 shared stories how this was successful.

All this chatter about heptane, gasoline, and anti-knock additives, has not been helpful.

-Kevin

Wink Happily modeling my STRATTON & GILLETTE RAILROAD. A Class A line located in a personal fantasy world of semi-plausible nonsense on Tuesday, August 3rd, 1954.

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Posted by Overmod on Wednesday, April 7, 2021 3:00 PM

SeeYou190
All this chatter about heptane, gasoline, and anti-knock additives, has not been helpful.

Says half of the mistaken 'experts' that got the dumb discussion going in the first place... Whistling

One thing helpful that came out of it is that you don't want to use a product containing substantial heptane as a cleaning solvent for model railroading!  As I recall that was being implicitly recommended -- in fact, I think actively advanced as a good choice -- at one point in the discussion... Angel

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Posted by Lastspikemike on Wednesday, April 7, 2021 3:54 PM

The "best" stuff we have found so far seems to be ACT 6006 sold as "Rail Cleaner". Aero car hobby lubricants is the brand. It claims to leave "a conductive film" and indeed it does. It appears to dissolve oxidation and leave an invisible film of oxide in the rails. You can see this if you wipe the dry rails with a white paper tower after the cleaner car goes by. 

Hmmmm. It undeniably works but it does not fully remove the black oxide.

Don't use a lot. It is quite volatile and who knows what all is actually in it. 

Alyth Yard

Canada

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Posted by selector on Wednesday, April 7, 2021 4:42 PM

Doc Wayne swears/used to swear by lacquer thinner, and that is what CMX recommends.  I have just acquired that car and used a PCM Y6-b to shove a Walthers track cleaning car ahead of the two around my entire system.  From looking at both pads (went through three with the CMX), they're doing 'something', and my train performance has never been better.  

What remains to be seen is how durable the effect will be.  My train room is a mess now as I am finishing the yard and pouring dirt and spraying adhesives into it. It's generally not a dusty room, but....we'll see over the summer how things go.

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