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Tar 
PostPosted: Mon Jan 04, 2010 2:07 am Reply with quote
Slavia
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So most of us know that tar type products are available for quieting a twangy spring. Does anybody know about making your own?

A while back I read on the Mexican forum (mexicoarmado.com) where a guy was melting roofing tar into a grease base. He tested it by putting some between his thumb and index finger, and if it formed strings when he pulled the fingers apart, it was ready.

Today I was waxing my old wooden cross-country skis, where you have to melt in a pine tar base to get the wax to stick. I got to wondering what would happen if I melted a bit into a synthetic grease. You can get either the pine tar that needs to be melted in with a torch, or a liquid form where the pine tar is dissolved in a volatile solvent. They also sell pine tar for adding "grip" to baseball bats.

Any information, experience, links, or ideas?

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PostPosted: Mon Jan 04, 2010 2:48 am Reply with quote
AirGunEric
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I personally have never been too comfortable with the idea of adding what is effectively sludge to the spring/guides of a springer to eliminate twang. And of course, a different sludge, er, tar, needs to be used depending on ambient whether conditions. In Mexico or Southern California, not necessarily a big deal with a temp spread of maybe 40-50*- but in the snow belt where the difference between summer and winter temperatures can be 100+ degrees, this becomes more relevant.

An idea that I saw awhile back that was interesting (on a Russian or Polish forum I believe) where the spring was surrounded by a plastic liner- made out of PET plastic. Of course the plastic and petroleum lube likely didn't go well together over time- but I found the idea somewhat interesting and it insulated the spring enough to virtually eliminate twang- even more so than a tar. Perhaps an acetylate tube could be machined to surround the spring when compressed and thereby avoid any petroleum-lube/plastic disintegration issues (?)

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PostPosted: Mon Jan 04, 2010 10:48 am Reply with quote
Slavia
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Quote:
I personally have never been too comfortable with the idea of adding what is effectively sludge to the spring/guides of a springer to eliminate twang.

I understand your point. It does seem counter-intuitive to take something that should slide freely and then add something to gum it up.

Quote:
but in the snow belt where the difference between summer and winter temperatures can be 100+ degrees, this becomes more relevant.

Also a good point. The other night I went out to the garage and with a temperature of -27 Deg. F. the drill press just didn't want to get up to speed. BTW - thanks, rsterne, for sending that our way.

Quote:
the spring was surrounded by a plastic liner

What, a precisely engineered solution when I could re-purpose something totally unrelated? I never thought of that.

Anyway, while I suspected all of the above to be true, I just wanted to see if anyone had anything to support or reject the notion.

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PostPosted: Mon Jan 04, 2010 11:31 am Reply with quote
rsterne
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Quote:
thanks, rsterne, for sending that our way.

Not a problem, there is another one here right now you can have as well.... Mr. Green

Bob

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