REFLECTOR: Epoxy and Carbon Spinners / Lampshade flow guideissue

[Alex Balic]

But what about on the spinner- I doubt that the exhaust was that close to the back plate- did the epoxy vaporize from the heat of the crankshaft? I wouldn’t think that it would get that hot in that location…

 

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of aminetech at bluefrog.com
Sent: Wednesday, November 23, 2011 9:14 AM
To: Velocity; Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Epoxy and Carbon Spinners / Lampshade flow guideissue

 

The heat from the exhaust pipe caused it.  The exhaust was about 1/4" from the cowl.

 

John

--- VelocityXL at fastmail.fm wrote:

From: "Velocity" <VelocityXL at fastmail.fm>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Epoxy and Carbon Spinners / Lampshade flow guideissue
Date: Wed, 23 Nov 2011 07:11:58 -0600

 

Did this happen just from the heat of the engine ? 

Was the exhaust real close?

 

Ron

----- Original Message ----- 

From: aminetech at bluefrog.com 

To: Brett Ferrell <mailto:reflector at velocityxl.com>  ; Velocity Aircraft Owners andBuilders list <mailto:reflector at tvbf.org>  

Sent: Tuesday, November 22, 2011 6:41 PM

Subject: Re: REFLECTOR: Epoxy and Carbon Spinners / Lampshade flow guideissue

 

It's amazing how heat can vaporize epoxy.  One of my exhaust pipes was too close to the cowl.  The epoxy vaporized, leaving a shredded fine mesh of fiberglass.

 

John

--- reflector at velocityxl.com wrote:

From: "Brett Ferrell" <reflector at velocityxl.com>
To: reflector <reflector at tvbf.org>
Subject: REFLECTOR: Epoxy and Carbon Spinners / Lampshade flow guide issue
Date: Tue, 22 Nov 2011 18:45:17 -0500

For folks with carbon spinners (well, really epoxy bulkheads or lampshade style flowguides) should take note of James Redmond's find on the Stagger EZ <http://www.berkut13.com/ntxspinner.htm> .  I'd been concerned about this since Marc Zeitlin's incident and replaced my spinner bulkhead with a metal one from Spruce, but here is another example of one that overheated and cooked the epoxy, and detensioned the prop bolts.  Be careful out there.

 

Brett

 

  <http://www.berkut13.com/spinner2/spinfail05.jpg> 

 

  <http://www.berkut13.com/spinner2/spinfail02.jpg> 

 

  <http://www.berkut13.com/spinner2/sezprop05.jpg> 

 

  <http://www.berkut13.com/spinner2/sezprop01.jpg> 

 

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