BVM Ceramic Blanket questions
06-25-2007 | 03:22 AM
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From: Sydney, AUSTRALIA
BVM Ceramic Blanket questions
Hi
I just bought some BVM ceramic blanket to wrap around the single wall bifurcated tailpipe of my Avonds rafale.
It doesent have any instructions so Ive got a couple of questions if anyone could answer.
Which side should be against the tailpipe ?
Is one layer enough or should I give it 2?
Should I just wrap it around and hold it in place with aluminium tape?
Thanks in advance
I just bought some BVM ceramic blanket to wrap around the single wall bifurcated tailpipe of my Avonds rafale.
It doesent have any instructions so Ive got a couple of questions if anyone could answer.
Which side should be against the tailpipe ?
Is one layer enough or should I give it 2?
Should I just wrap it around and hold it in place with aluminium tape?
Thanks in advance
06-25-2007 | 07:37 AM
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RE: BVM Ceramic Blanket questions
Check this [link=http://www.rcuniverse.com/forum/m_5901529/anchors_5901529/mpage_1/key_thermal%252Cblanket/anchor/tm.htm#5901529]link[/link]
and this [link=http://www.rcuniverse.com/forum/m_5900909/anchors_5900909/mpage_1/key_heat%252Cshield/anchor/tm.htm#5900909]one[/link]
and this [link=http://www.rcuniverse.com/forum/m_5900909/anchors_5900909/mpage_1/key_heat%252Cshield/anchor/tm.htm#5900909]one[/link]
06-25-2007 | 10:03 AM
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From: Longwood ,
FL
RE: BVM Ceramic Blanket questions
If you wish to wrap the tailpipe with the ceramic material, laminate it with aluminum foil as shown in my thread that Edgar Perez was kind enough to link.
Place the rough side of the ceramic material against the pipe. One wrap is enough.
That was the way some of us used to do it back before double walled pipes. We also used a very thin aluminum foil outer tube rolled up in a fixture to create an (air spaced) outer pipe. The new style dual wall pipes are an improvement of that original BVM design.
The thermal blanket was also applied to the fuselage to keep it cool to the touch.
If you have a double walled pipe, you don't need to wrap it. The air space between the pipe inner and outer tubes carry the majority of the heat away. Apply the thermal blanket to the upper half of the fuselage diameter for the length of the pipe, as described in the linked thread.
Since you have a single walled pipe, it is a good idea to place the spot welded seam on the top....since the pipe is spot welded, and not seam welded, any fuel accidently spilled or pumped to the inside of the pipe could dribble between the spot welds into the fuselage interior....I know that this might seem to be impossible, but since you have the choice, put the seam on top. Just a "pennies worth of prevention"...........................
Harley Condra
BVM REP
JetCat REP
Place the rough side of the ceramic material against the pipe. One wrap is enough.
That was the way some of us used to do it back before double walled pipes. We also used a very thin aluminum foil outer tube rolled up in a fixture to create an (air spaced) outer pipe. The new style dual wall pipes are an improvement of that original BVM design.
The thermal blanket was also applied to the fuselage to keep it cool to the touch.
If you have a double walled pipe, you don't need to wrap it. The air space between the pipe inner and outer tubes carry the majority of the heat away. Apply the thermal blanket to the upper half of the fuselage diameter for the length of the pipe, as described in the linked thread.
Since you have a single walled pipe, it is a good idea to place the spot welded seam on the top....since the pipe is spot welded, and not seam welded, any fuel accidently spilled or pumped to the inside of the pipe could dribble between the spot welds into the fuselage interior....I know that this might seem to be impossible, but since you have the choice, put the seam on top. Just a "pennies worth of prevention"...........................
Harley Condra
BVM REP
JetCat REP
