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Tunnel Temps

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dav1111(at)cox.net
Guest

Posted: Sat Jul 29, 2006 5:13 pm Post subject: Tunnel Temps

Second flight today in N710RV.  Checked the  forward tunnel area for high temps.  Used the bare leg method.  Stuck  my bare left leg up against the tunnel wall and held it there for at least five  minutes.  No problem, even confirmed after landing that I still had hair on  my leg (just in case my 33 month build had killed the nerves in the leg and I  didn't feel the heat).

  

 After hearing all the tunnel heat issues raised in  the posts I did the following:

  

 1.    Bought a roll of engine gasket  material at NAPA and cut out gaskets to install between the firewall and the  heat vent boxes. (Don't remember for sure but I think this tip came from Tim  Olson as 90% of the my help tips have - Thanks Tim).

  

 2.    Installed an RTV gasket around  the inside of the heat vent doors after install by beading the RVT around the  opening, placing a piece of wax paper over the RTV and closing the door with the  cable.  After setup of the RTV I removed the wax paper and re-closed the  door. (Install tip from Jesse Saint - Thanks Jesse).

  

 3.   RTV'ed around the outside  of each heat vent box.

  

 4.    Installed foil faced  insulation on the bottom of the tunnel floor and over the inside of the  firewall (used this method on my RV-6A firewall after it was built and it  made a huge difference).  I did not build a false floor in the tunnel, only  put the insulation up to the edge of the fuel flow transducer and fuel  pump.

  

 5.    Installed sound proofing foam  insulation under the floor and on the sidewalls.

  

 Hope these tips help.

  

 By the way N710RV flies like a dream.  Working  on wheel pants and gear leg fairings between flights.

  

 Russ Daves

KiloPapa

Joined: 24 May 2006
Posts: 142
Location: Pearblossom, CA

Posted: Sat Jul 29, 2006 9:59 pm Post subject: Tunnel Temps

Russ, 

 What kind of foil faced insulation did  you use?  What was the actual insulating material?  Where did you buy  it?

  

 Thanks,

  

 Kevin

 40494

 [quote]   ---

_________________
Kevin
40494

do not archive

dav1111(at)cox.net
Guest

Posted: Sun Jul 30, 2006 1:21 am Post subject: Tunnel Temps

Used Super Soundproofing Thermal Aluminum faced  fire retardant foil one side insulator blanket from "The Super Soundproofing  Company"

  

  http://www.soundproofing.org/cgi-bin/cart.pl?

  

 I bought six feet and had enough.

  

 I also bought twelve feet of 1/2" soundproofing for  the floors and side panels from Wicks

  

 http://www.wicksaircraft.com/catalog/product_search_results.php/search=c3AtNTAw

  

 Russ Daves

 40044 - N710RV Flying

 [quote]   ---

LarryRosen

Joined: 16 Jan 2006
Posts: 415
Location: Medford, NJ

Posted: Sun Jul 30, 2006 2:50 am Post subject: Tunnel Temps

Any more details on the engine gasket material you used?

Larry Rosen

#356

N205EN - Doors



Russell Daves wrote:

 	  Quote: 	
		   Second flight today in N710RV.  Checked the forward tunnel area for 

 high temps.  Used the bare leg method.  Stuck my bare left leg up 

 against the tunnel wall and held it there for at least five minutes.  

 No problem, even confirmed after landing that I still had hair on my 

 leg (just in case my 33 month build had killed the nerves in the leg 

 and I didn't feel the heat).

  

 After hearing all the tunnel heat issues raised in the posts I did the 

 following:

  

 1.    Bought a roll of engine gasket material at NAPA and cut out 

 gaskets to install between the firewall and the heat vent boxes. 

 (Don't remember for sure but I think this tip came from Tim Olson as 

 90% of the my help tips have - Thanks Tim).

  

 2.    Installed an RTV gasket around the inside of the heat vent doors 

 after install by beading the RVT around the opening, placing a piece 

 of wax paper over the RTV and closing the door with the cable.  After 

 setup of the RTV I removed the wax paper and re-closed the door. 

 (Install tip from Jesse Saint - Thanks Jesse).

  

 3.   RTV'ed around the outside of each heat vent box.

  

 4.    Installed foil faced insulation on the bottom of the tunnel 

 floor and over the inside of the firewall (used this method on my 

 RV-6A firewall after it was built and it made a huge difference).  I 

 did not build a false floor in the tunnel, only put the insulation up 

 to the edge of the fuel flow transducer and fuel pump.

  

 5.    Installed sound proofing foam insulation under the floor and on 

 the sidewalls.

  

 Hope these tips help.

  

 By the way N710RV flies like a dream.  Working on wheel pants and gear 

 leg fairings between flights.

  

 Russ Daves

_________________
Larry Rosen
#40356
N205EN (reserved)
<http>

dav1111(at)cox.net
Guest

Posted: Sun Jul 30, 2006 5:32 am Post subject: Tunnel Temps

Just ask at any auto parts store for a roll of engine gasket material.  It 

comes in about 8 inch by 24 inch roll I think.



Russ Daves



---

effectus(at)rogers.com
Guest

Posted: Sun Jul 30, 2006 7:35 am Post subject: Tunnel Temps

Russ,

  

 What thickness of SuperSoundproofing did you use?

  

 Dave Hertner

  

 Do Not Archive

 [quote]   ---

dav1111(at)cox.net
Guest

Posted: Sun Jul 30, 2006 10:35 am Post subject: Tunnel Temps

1/2 inch

  

 Russ Daves

  

 do not archive

 [quote]   ---

dav1111(at)cox.net
Guest

Posted: Sun Jul 30, 2006 10:37 am Post subject: Tunnel Temps

Dave,

  

 Ignore my first response, I was half  asleep.

  

 The stuff I got from SuperSoundproofing.org  for the firewall and tunnel floor only came in one thickness, it was called  "Super Soundproofing Thermal Aluminum faced fire retardant foil one side  insulator blanket".  It really wasn't for sound proofing as much as for  heat proofing.

  

 The soundproofing I got from Wicks Aircraft  Supply was 1/2" for the floors and side panels.

 [quote]   ---

capsteve

Joined: 09 Jan 2006
Posts: 111
Location: NIAGARA FALLS NY

Posted: Sun Jul 30, 2006 5:39 pm Post subject: Tunnel Temps

The baffle material works as well and is already on hand. Both the red hi

temp silicon and the thinner black works great. 

Steve d

40205



--

rvbuilder(at)sausen.net
Guest

Posted: Mon Jul 31, 2006 7:37 am Post subject: Tunnel Temps

I spent a little time talking to the guy from EPM.AV at  OSH.  We were discussing the heat problem and he is going to send me  prototype heater boxes that are two part separated by a ceramic gasket for a  full thermal break.  I'll send some pictures when I get it in a couple  weeks.

  

 Michael



   From: owner-rv10-list-server(at)matronics.com  [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Russell  Daves

Sent: Saturday, July 29, 2006 8:11 PM

To:  rv10-list(at)matronics.com

Subject: Tunnel  Temps

 

 Second flight today in N710RV.  Checked the  forward tunnel area for high temps.  Used the bare leg method.  Stuck  my bare left leg up against the tunnel wall and held it there for at least five  minutes.  No problem, even confirmed after landing that I still had hair on  my leg (just in case my 33 month build had killed the nerves in the leg and I  didn't feel the heat).

  

 After hearing all the tunnel heat issues raised in  the posts I did the following:

  

 1.    Bought a roll of engine gasket  material at NAPA and cut out gaskets to install between the firewall and the  heat vent boxes. (Don't remember for sure but I think this tip came from Tim  Olson as 90% of the my help tips have - Thanks Tim).

  

 2.    Installed an RTV gasket around  the inside of the heat vent doors after install by beading the RVT around the  opening, placing a piece of wax paper over the RTV and closing the door with the  cable.  After setup of the RTV I removed the wax paper and re-closed the  door. (Install tip from Jesse Saint - Thanks Jesse).

  

 3.   RTV'ed around the outside  of each heat vent box.

  

 4.    Installed foil faced  insulation on the bottom of the tunnel floor and over the inside of the  firewall (used this method on my RV-6A firewall after it was built and it  made a huge difference).  I did not build a false floor in the tunnel, only  put the insulation up to the edge of the fuel flow transducer and fuel  pump.

  

 5.    Installed sound proofing foam  insulation under the floor and on the sidewalls.

  

 Hope these tips help.

  

 By the way N710RV flies like a dream.  Working  on wheel pants and gear leg fairings between flights.

  

 Russ Daves

KiloPapa

Joined: 24 May 2006
Posts: 142
Location: Pearblossom, CA

Posted: Mon Jul 31, 2006 12:35 pm Post subject: Tunnel Temps

Thanks for the info.

  

 Kevin

 [quote]   ---

_________________
Kevin
40494

do not archive

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