REFLECTOR: Repairs

Brian Michalk michalk at awpi.com
Sun Sep 23 21:48:15 CDT 2012 

But the axle conducts a lot of heat directly to the gear leg.  I don't 
see how that could be insulated, because it involves bolts and other 
hardware.

On 09/23/2012 06:38 PM, Andrew Ellzey wrote:
> I used this product from AS, 
> http://www.aircraftspruce.com/catalog/eppages/heatbarriers.php hope it 
> works.
>
> Andy Ellzey
>
>
> ------------------------------------------------------------------------
> *From: * John Dibble <aminetech at bluefrog.com>;
> *To: * Velocity Aircraft Owners and Builders list <reflector at tvbf.org>;
> *Subject: * Re: REFLECTOR: Repairs
> *Sent: * Sat, Sep 22, 2012 12:32:05 PM
>
> 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> <javascript:return>
>>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org> 
>>> <javascript:return>
>>> 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 <javascript:return>
>>>> *Sent:* Friday, September 21, 2012 6:37 PM
>>>> *To:* Velocity Aircraft Owners and Builders list <javascript:return>
>>>> *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 <javascript:return>
>>>>     *To:* Velocity Reflector <javascript:return>
>>>>     *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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>
>
>
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