REFLECTOR: Repairs

[John Dibble]

Ii have aluminum wrapped all around at the bottom.  Never had a heating 
problem.

John

On 9/21/2012 10:38 PM, Brian Michalk wrote:
> I've thought the same type of approach could be taken with heated 
> brakes softening the gear legs.
>
> Epoxy a strip of AL up the side of the gear to more evenly distribute 
> the heat, rather than keep it localized in one spot.
>
>
> On 09/21/2012 08:39 PM, Scott Derrick wrote:
>> Lou,
>>
>> If the extrusion was aluminum you probably wouldn't have the 
>> problem.  Aluminum radiates the heat away, fiberglass tends to retain it.
>>
>> I have a spot on my cowl where the exhaust comes really close, less 
>> than 1/4 inch.  Use to get paint bubbles on the outside. I ground it 
>> out on the inside, glued an riveted a piece of  aluminum right into 
>> the ground out spot and now no bubbling...
>>
>> Scott
>>
>> -------- Original Message --------
>> Subject: Re: REFLECTOR: Repairs
>> From: Lou Stedman <stedmanlou at roadrunner.com> 
>> <mailto:stedmanlou at roadrunner.com>
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org> 
>> <mailto:reflector at tvbf.org>
>> Date: 09/21/2012 07:21 PM
>>> Doug, Your cowl looks just like mine except I have only one pipe on 
>>> each side and my pipe ends about 1" inside the exhaust extrusion. 
>>> The extrusion is formed completely around the exhaust pipe creating 
>>> a pipe within a pipe which has been discussed. There is a very thin 
>>> heat shield which is held in place with high temp silicone. I think 
>>> my problem is that there is not enough clearance between the exhaust 
>>> pipe and the heat shield. Also since the pipe ends about an inch 
>>> inside the fiberglass, the air expands as it leaves the pipe causing 
>>> it to contact the sides. I normally run an EGT of about 1400 degrees 
>>> in cruise. I am not sure what the temp is as it leaves the exhaust 
>>> pipe but it has to be 1000 degrees anyway. The aircraft was built by 
>>> Dan Maher himself about 23 years ago and I have a feeling this has 
>>> been a problem before me. I have repaired it at least twice in the 
>>> last five years.
>>> *From:* Douglas Holub <mailto:douglas.holub at gmail.com>
>>> *Sent:* Friday, September 21, 2012 6:37 PM
>>> *To:* Velocity Aircraft Owners and Builders list 
>>> <mailto:reflector at tvbf.org>
>>> *Subject:* Re: REFLECTOR: Repairs
>>> Mine protrude a little.  No bubbling on the cowl.  I put aluminum 
>>> tape on the inside of the cowl near the pipes.
>>>
>>>     ----- Original Message -----
>>>     *From:* Lou Stedman <mailto:stedmanlou at roadrunner.com>
>>>     *To:* Velocity Reflector <mailto:reflector at tvbf.org>
>>>     *Sent:* Friday, September 21, 2012 1:08 AM
>>>     *Subject:* REFLECTOR: Repairs
>>>     I have two repairs to do to my bird.
>>>     First, while I was on a trip this week, I was forced to tie my
>>>     plane outside. There was a large storm with high winds that came
>>>     through and blew my right rudder so that the bell crank  is now
>>>     loose. What is the best way to repair this?
>>>     Second, I am getting severe bubbling on my lower cowl, around
>>>     the exhaust tube. I am running a straight pipe out both right
>>>     and left side. The end of my pipe is about 1" inside the cowl.
>>>     There is a metal heat shield applied to the cowl with high temp
>>>     silicone. Do your pipes extend out of the cowl and how much
>>>     clearance around the pipes do you have? If you have any pictures
>>>     I would love to see them.
>>>     Thanks for any advice you may have.
>>>     Lou Stedman
>>>     Velocity SEFG
>>>     N7044Q
>>>     Olean, NY
>>>
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>>
>> -- 
>> Prayer is not to be used as a confessional, to cancel sin. Such an error would impede true religion. Sin is forgiven only as it is destroyed by Christ - Truth and Light.
>> Mary Baker Eddy
>>
>>
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>
>
>
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