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12-29-2014, 11:42 AM
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Join Date: Jul 2011
Location: Cypress, TX
Posts: 414
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Pro Seal working temperature
Well I had planned on assembling my fuel tanks this week but temps in the 40s and 100% humidity I'm not sure that is acceptable for the pro seal. I looked at the product sheet and it doesn't really specify a working range, just affects from standard of 77 and 50%.
If any experienced Pro Seal experts can comment on my conditions and if acceptable to proceed I'd appreciate it. This is one job I'd rather wait than redo.
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RV14A #140083
Flying! 8/12/19
2019 Donation
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12-29-2014, 11:50 AM
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Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,189
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Quote:
Originally Posted by Tom023
Well I had planned on assembling my fuel tanks this week but temps in the 40s and 100% humidity I'm not sure that is acceptable for the pro seal. I looked at the product sheet and it doesn't really specify a working range, just affects from standard of 77 and 50%.
If any experienced Pro Seal experts can comment on my conditions and if acceptable to proceed I'd appreciate it. This is one job I'd rather wait than redo.
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I'm no expert but my experience has been that pro-seal takes longer to cure in colder temps. In fact, when I worked at Gulfstream, they pre-mixed the stuff and put it in the freezer until needed. Given 30 minutes to warm up, it worked normally.
I would go ahead with the job but use a heat gun to help the curing process and lower the humidity at the same time. If no heat is available, wait for warmer wx.
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Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
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12-29-2014, 12:25 PM
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Join Date: Jul 2011
Location: Cypress, TX
Posts: 414
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Thanks Ray. If you used at Gulfstream you are in expert in my book.
I called Flame Master. They indicated if you can mix it and spread it, there are no issues with curing. Problem is he said is I won't be able to hand mix in the 40s or 50s. He really recommended 77 to 80 as the working temp.
I guess I'll wait until the spring and move on to the control surfaces. One of the issues building in a unheated hangar, even in Texas.
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RV14A #140083
Flying! 8/12/19
2019 Donation
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12-29-2014, 01:57 PM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,947
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Proseal
Is there any possibility you can move the parts closer to a heated area like a home garage? I kept my Proseal cold and brought it inside the night before. Working it in my shop at 50-60 gave me working times of about 1.5 hours. After assembly, parts came inside to cure a couple days before the next step. After tanks were done, they cured inside my heater furnace room for a week before testing.
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Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/03/2019, plus a little extra.
RV-7A #73391, N511RV reserved (2,000+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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