REFLECTOR:Gear odor
John Dibble
reflector@tvbf.org
Wed, 28 Jan 2004 14:49:54 -0600
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Chuck Jensen wrote:
>John,
>
>Could be. Do you smell it for a while, or just briefly? I smell mine for
>4-5 seconds, then it's gone.
>
Mine is about the same or a few seconds longer. The odor is more like
electrical when wires overheat. I guess if we want to resolve this we
could pop the gear circuit breaker when only the nose (or main,
whichever comes first) is retracted. I generally don't smell anything
which might (most likely) be because I wait longer to retract, or maybe
I didn't use the brakes much.
> The briefness of the odor probably also says
>something about the amount of air that transverses the nose area, thru the
>keel and into cabin, that the smell comes and goes so quickly. Granted the
>underside of the wing/wheel wells might be a high pressure area at high AOA,
>but the nose gear area is always a hi-pressure area. I would think that the
>inflow to the cabin from the nose area would "flush" the air thru the cabin
>and out the gear leg opening in the fuselage and not allow air from the
>mains to back up into the cabin.
>
If it gets in the cabin, I think you will smell it. One time I had a
small can of PVC cleaner in the cabin. At altitude I noticed a
moderately strong odor of the cleaner which lasted several minutes until
the can had adjusted to the lower pressure. I was quite concerned not
knowing how strong the smell might get and what I would do if the can
ruptured. Now anything like that goes outside the cabin in the strake
cubbyhole or stays home.
John
>
>
>Next time I fly, I'll tell the significant other go get behind the back
>seats with a candle to see which way the wind blows when I take off. That
>idea will probably heat things up and cause a stink but it won't be from
>brakes or tires.
>
>Chuck
>
>-----Original Message-----
>From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org]On
>Behalf Of John Dibble
>Sent: Wednesday, January 28, 2004 12:31 PM
>To: reflector@tvbf.org
>Subject: Re: REFLECTOR: Cabin Heating
>
>
>Chuck,
>I have no rub marks on the nose doors, but do have some on the insides
>of the fork so I suppose it's possible. However when I landed I sniffed
>all around and found the identical smell at the brakes and nowhere
>else. I do expect my brakes to be hot on takeoff because I'm still
>wrestling with my technique for steering the nose wheel. I also expect
>under the wing to be a high pressure area during high AOA which would
>force air into the cabin.
>
>John
>
>Chuck Jensen wrote:
>
>
>
>>John,
>>
>>I don't want to question your nose but I think you're smelling the spinning
>>nose wheel when it settles against the closed nose doors? At least I've
>>
>>
>got
>
>
>>rub marks there and I smell it upon retract. I have no rub marks at all in
>>the main gear wells. One wouldn't expect your brakes to be hot from a take
>>off and, besides, I'm not sure we'd ever smell burnt rubber/brakes from the
>>mains as the air flow will probably sweep it out behind us. The nose knows
>>may not be true this time.
>>
>>Chuck
>>
>>
>>
>>
>
>
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>
>
>
>
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<br>
Chuck Jensen wrote:<br>
<blockquote type="cite"
cite="midC0D8472E14AAD51195E9005004A5200431B49B@NTSERVER">
<pre wrap="">John,
Could be. Do you smell it for a while, or just briefly? I smell mine for
4-5 seconds, then it's gone.</pre>
</blockquote>
Mine is about the same or a few seconds longer. The odor is more like
electrical when wires overheat. I guess if we want to resolve this we
could pop the gear circuit breaker when only the nose (or main,
whichever comes first) is retracted. I generally don't smell anything
which might (most likely) be because I wait longer to retract, or maybe
I didn't use the brakes much.<br>
<blockquote type="cite"
cite="midC0D8472E14AAD51195E9005004A5200431B49B@NTSERVER">
<pre wrap=""> The briefness of the odor probably also says
something about the amount of air that transverses the nose area, thru the
keel and into cabin, that the smell comes and goes so quickly. Granted the
underside of the wing/wheel wells might be a high pressure area at high AOA,
but the nose gear area is always a hi-pressure area. I would think that the
inflow to the cabin from the nose area would "flush" the air thru the cabin
and out the gear leg opening in the fuselage and not allow air from the
mains to back up into the cabin.</pre>
</blockquote>
If it gets in the cabin, I think you will smell it. One time I had a
small can of PVC cleaner in the cabin. At altitude I noticed a
moderately strong odor of the cleaner which lasted several minutes
until the can had adjusted to the lower pressure. I was quite
concerned not knowing how strong the smell might get and what I would
do if the can ruptured. Now anything like that goes outside the cabin
in the strake cubbyhole or stays home.<br>
<br>
John<br>
<blockquote type="cite"
cite="midC0D8472E14AAD51195E9005004A5200431B49B@NTSERVER">
<pre wrap="">
Next time I fly, I'll tell the significant other go get behind the back
seats with a candle to see which way the wind blows when I take off. That
idea will probably heat things up and cause a stink but it won't be from
brakes or tires.
Chuck
-----Original Message-----
From: <a class="moz-txt-link-abbreviated" href="mailto:reflector-admin@tvbf.org">reflector-admin@tvbf.org</a> [<a class="moz-txt-link-freetext" href="mailto:reflector-admin@tvbf.org">mailto:reflector-admin@tvbf.org</a>]On
Behalf Of John Dibble
Sent: Wednesday, January 28, 2004 12:31 PM
To: <a class="moz-txt-link-abbreviated" href="mailto:reflector@tvbf.org">reflector@tvbf.org</a>
Subject: Re: REFLECTOR: Cabin Heating
Chuck,
I have no rub marks on the nose doors, but do have some on the insides
of the fork so I suppose it's possible. However when I landed I sniffed
all around and found the identical smell at the brakes and nowhere
else. I do expect my brakes to be hot on takeoff because I'm still
wrestling with my technique for steering the nose wheel. I also expect
under the wing to be a high pressure area during high AOA which would
force air into the cabin.
John
Chuck Jensen wrote:
</pre>
<blockquote type="cite">
<pre wrap="">John,
I don't want to question your nose but I think you're smelling the spinning
nose wheel when it settles against the closed nose doors? At least I've
</pre>
</blockquote>
<pre wrap=""><!---->got
</pre>
<blockquote type="cite">
<pre wrap="">rub marks there and I smell it upon retract. I have no rub marks at all in
the main gear wells. One wouldn't expect your brakes to be hot from a take
off and, besides, I'm not sure we'd ever smell burnt rubber/brakes from the
mains as the air flow will probably sweep it out behind us. The nose knows
may not be true this time.
Chuck
</pre>
</blockquote>
<pre wrap=""><!---->
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</pre>
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