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Posted: 12/27/2003 5:33:48 PM EDT
I was wondering if anyone makes a black or green gastube?

I don't think paint would stick to the standard silver one.
Link Posted: 12/27/2003 5:48:03 PM EDT
Won't stick because its "Stainless" steel.
Get a std. one or a few, they're cheap, then send them to Walter Birdsong and have them finished in any color he offers, but I don't know how well the finish will hold up to the heat.  Would be nice on a "concept rifle" though.

/S2
Link Posted: 12/27/2003 6:52:18 PM EDT
I have painted and KG'd tubes

Seems to hold up well enough
Link Posted: 12/27/2003 9:07:34 PM EDT
The KG is solid on the FA's KB?
Good to hear.  Have any idea, in theory or otherwise, if the KG holds up well how the Birdsong will do?

Thanks, /S2
Link Posted: 12/28/2003 5:52:51 AM EDT
How hot does the gas tube get? I was thinking heat shrink tubing might work. 3M makes a nice variety of the stuff.
Link Posted: 12/28/2003 6:33:24 AM EDT
At times, hot enough to "blue" stainless steel, I don't know what range of degrees that phenomenon coincides w/ though.
Link Posted: 12/28/2003 7:28:32 AM EDT
I'd just roughen up the surface with some sandpaper, clean it really well, then use high temp paint for exhausts/stoves.

[url=http://www.krylon.com/product/s_product_detail.asp?sgID=S02]Krylon High Temp Paint[/url]
Link Posted: 12/28/2003 1:11:43 PM EDT
[Last Edit: 12/29/2003 6:47:13 PM EDT by militarymoron]
Originally Posted By Beta_MO:
How hot does the gas tube get? I was thinking heat shrink tubing might work. 3M makes a nice variety of the stuff.
View Quote

most definitely too hot for heat shrink.  it'll melt/burn right off.  the hi-temp engine block/oven paint like u pointed out will work (as long as it's matte black).  a matte black paint finish should actually help dissipate heat faster than a stainless finish.
cheers,
MM
Link Posted: 12/28/2003 1:23:29 PM EDT
Close to 900 degrees and more like the barrel does on full auto.
Jack
Link Posted: 12/28/2003 4:30:35 PM EDT
[Last Edit: 12/28/2003 4:31:11 PM EDT by KevinB]
SULACO2,
I think that since it does not get bumped or banged while hot has a lot to do with that.  I have a KG'd 20" barrel on my MRS rifle and it has very visible scrathes and dings.


Kevin
Link Posted: 12/28/2003 4:47:36 PM EDT
"How hot does the gas tube get? I was thinking heat shrink tubing might work. 3M makes a nice variety of the stuff. "

They can get over 1000degrees and I really think painting is a bad idea (it may reduce cooling), If I were to paint one I would have it coated with a thermal dissipation coating (one of those coatings that helps speed cooling).
Link Posted: 12/28/2003 6:21:53 PM EDT
In theory anything that increases surface area will increase cooling.


As far as the paranoia people have with heat -- IF I am in a situation where I have to heat my carbine/rifle/LMG etc to a point where I am damaging things - odd are I am not doing so well either
and will be not so worried about suffering the effects of having to reimburse the crown (or in your case the US Gov't) for the effects of my wanton lead spilling.

Link Posted: 12/28/2003 7:49:49 PM EDT
Originally Posted By 3rdtk:
Close to 900 degrees and more like the barrel does on full auto.
Jack
View Quote


Thanks, Jack.

Originally Posted By KevinB:

...I think that since it does not get bumped or banged while hot has a lot to do with that.  I have a KG'd 20" barrel on my MRS rifle and it has very visible scrathes and dings...
View Quote


Ahh, good point, thanks Kevin.

Think the Birdsong will do well?  No experience with Birdsong and stainless or at high temp.s any ideas.

TIA, /S2
Link Posted: 12/28/2003 7:54:34 PM EDT
I have zero experience with the Birdsong for those applications (does fine on my BHP though...)
Link Posted: 12/29/2003 4:53:02 AM EDT
I have an HK91 finished in Birdsong's Green-T.  The barrel has turned a little brownish under the handguard, but no effect is visible on the forward portion of the barrel.  The finish is totally intact otherwise.  I think the black would hold up on a gas tube.
Link Posted: 12/29/2003 8:15:14 AM EDT
Use Dupli-Color Hi Temp engine enamel available from you local auto supply store at about $4. This stuff is good for 1500F and above. I have used it on mags. etc and it holds up great.
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