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08-24-2016, 12:05 PM
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Join Date: Jul 2012
Location: n. wi
Posts: 776
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heatsleeve
soooooooooo i have a braided s.s. teflon line for my oil from sump to engine. firesleeve it?
thanks
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Bob Noffs
n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
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08-24-2016, 12:19 PM
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Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,183
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I'm sure others will chime in but the general rule (mine, at least) is to fire sleeve all lines in engine compartment (except MAP).
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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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08-24-2016, 12:29 PM
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Join Date: Oct 2008
Location: Hales Corners, WI
Posts: 981
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If you're talking about the oil lines from the pump to the cooler and back, I didn't sleeve mine. Probably going to fall out of the air as a result though. 
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Jesse Bentley
N229Z - RV-8 - Flying - Livin' the dream!
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08-24-2016, 02:22 PM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
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Because of the closeness of the exhaust to the cooler, and hoses, I'd sleeve them. It's pretty much SOP with us to sleeve FWF hoses.
Tom
__________________
Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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08-24-2016, 04:13 PM
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Join Date: Jul 2012
Location: n. wi
Posts: 776
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so to go one step further do you sleeve a rubber hose with coolant in it? in a blowtorch type fire i am sure a little of the external layer of hose burns. is that significant. yea , i know i have bigger problems, just wondering what other's take on this is.
__________________
Bob Noffs
n. wi.
dakota hawk/jab 3300 built and flying. sold 6/18.getting serious about the 12. in the hangar now as of 10/15/19
RV-12 kit as of 9/13
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08-24-2016, 04:56 PM
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Join Date: Jun 2008
Location: Kalamazoo, MI
Posts: 263
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I have a Rotax 914 which has the turbo and muffler mounted under the engine. The concern is the oil return line which is only a inch or two from the muffler and one of the pipes. I use Teflon hose with stainless steel braid. Is fire sleeve the product to use or is Thermosleeve? Thermosleeve is very good at reducing radiant heat. I'm not sure what fire sleeve is designed to do. For a number of years I've used Thermosleeve since that is what Rotax has on coolant hoses. What have others done for this hose?
Jim Butcher
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08-24-2016, 06:02 PM
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Join Date: Jul 2010
Location: NSW Australia
Posts: 298
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It was explained to me that another reason to use fire sleeve is leaks may become drips instead of sprays. Apparently a drip has far less danger attached to it than a spray. Also depends where the drip and spray are located.
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Pete
RV-9 "Cloud tinnie"
Registered VH-EAB
Flying Phase 2
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08-24-2016, 07:53 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,515
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Quote:
Originally Posted by bobnoffs
so to go one step further do you sleeve a rubber hose with coolant in it? in a blowtorch type fire i am sure a little of the external layer of hose burns. is that significant. yea , i know i have bigger problems, just wondering what other's take on this is.
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At high temperatures glycol will burn.
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Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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08-24-2016, 11:36 PM
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Join Date: Dec 2011
Location: Kirkland, WA
Posts: 886
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Seems to me, you should worry about 2 things:
1. Proximity to heat/exhaust
2. What's flowing in the hose
If the hose isn't close to the exhaust and what's flowing in it isn't worried too much about heat, then I don't see a reason to use fire sleeve. So fuel lines: certainly sleeve them. Oil and air (oil coolant, oil pressure, manifold pressure, crankcase ventilation, etc.): I'm not worried about them as long as they're not close to exhaust pipes.
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08-25-2016, 07:49 AM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
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Russ----in the case of RV12's with the water cooled Rotax engines, there is alot of plumbing in a small area, and near the muffler. Certainly the oil cooler hoses and fuel, but the water coolant hoses probably will be fine. Another note----those coolant hoses are pretty large, so firesleeving them will take some money out of the budget.
Tom
__________________
Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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