REFLECTOR: Re: Reflector Digest, Vol 9, Issue 53-PREVENTING DRAFTS
Scott Derrick
scott at tnstaafl.net
Wed Feb 16 17:30:00 CST 2005
Chuck,
I and many others would love to see pictures. I think I understand but
a picture is worth a thousand words.
If you don't know how to get the images(I'm hoping for multiple images
from a few different angles) up on the reflector web site, send them
to me and I'll post them.
Scott
Chuck Harbert wrote:
> To: Tom Martino:
>
> I have a std RG. I sealed my cabin by using a piece of rubber tire
> tube which I stretched over the upper part of the nose gear tube. I
> took about a 9' x 9" piece of the tube and cut about a 1" hole in the
> center which will stretch over the tube. Then I took some 3/4" x 3/16"
> aluminum flat stock pieces and drilled holes for 1/8" pop rivets to go
> thru. I put the stock against the rubber tube and drilled thru rubber
> and the surrounding wall, and then pop rivited it in place. When the
> nose gear rotates it stretches the rubber, but stays sealed. It works
> very well and there's virtually no airflow into the cabin when you
> drop the gear. I could try to get a picture if you want it.
>
> Chuck Harbert
>
> p.s. This the first time I've used Reflector. Hope it works.
>
>
>
> ----- Original Message ----- From: <reflector-request at tvbf.org>
> To: <reflector at tvbf.org>
> Sent: Wednesday, February 16, 2005 8:21 AM
> Subject: Reflector Digest, Vol 9, Issue 53
>
>
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>> Today's Topics:
>>
>> 1. Re: PREVENTING DRAFTS (Scott Baker)
>> 2. Re: PREVENTING DRAFTS (HYTEC45 at aol.com)
>> 3. Re: FUEL FEED [heur] (Scott Derrick)
>> 4. Re: FUEL FEED [heur] (Scott Derrick)
>> 5. Re: FUEL FEED (Scott Derrick)
>> 6. Re: PREVENTING DRAFTS (Scott Derrick)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Wed, 16 Feb 2005 06:19:50 -0500
>> From: "Scott Baker" <sbakr at comcast.net>
>> Subject: Re: REFLECTOR: PREVENTING DRAFTS
>> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>> Message-ID: <001501c51419$7064a870$0201a8c0 at DAD>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Why in the world would you want to seal off a small draft when it's
>> 75-degrees outside?? ;-)
>> Scott B.
>> ----- Original Message ----- From: Tom Martino
>> To: reflector at www.tvbf.org
>> Sent: Tuesday, February 15, 2005 11:43 PM
>> Subject: REFLECTOR: PREVENTING DRAFTS
>>
>>
>> With the nose gear down and gear doors open . how do you guys keep
>> air from rushing into the cockpit?
>>
>>
>>
>> I know I obviously have to install some kind of barrier . but I'm
>> not sure of the configuration.
>>
>>
>>
>> Any ideas? Or better yet . any photos?
>>
>>
>>
>> Tom
>>
>> N173EX
>>
>>
>>
>> ------------------------------------------------------------------------------
>>
>>
>>
>> _______________________________________________
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>>
>> ------------------------------
>>
>> Message: 2
>> Date: Wed, 16 Feb 2005 09:53:46 EST
>> From: HYTEC45 at aol.com
>> Subject: Re: REFLECTOR: PREVENTING DRAFTS
>> To: reflector at tvbf.org
>> Message-ID: <30.6c5da523.2f44b87a at aol.com>
>> Content-Type: text/plain; charset="us-ascii"
>>
>>
>> In a message dated 2/16/2005 3:26:40 A.M. Pacific Standard Time,
>> sbakr at comcast.net writes:
>>
>> Why in the world would you want to seal off a small draft when it's
>> 75-degrees outside?? ;-)
>> Scott B.
>>
>>
>>
>> Some of us carry less insulation than others;-)
>>
>> TEC
>> -------------- next part --------------
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>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Wed, 16 Feb 2005 09:11:36 -0700
>> From: Scott Derrick <scott at tnstaafl.net>
>> Subject: Re: REFLECTOR: FUEL FEED [heur]
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>> Message-ID: <421370B8.5010007 at tnstaafl.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> as long as the turn coordinator is actually installed correctly.
>>
>> Its amazing how many are not. It doesn't take much.
>>
>> Scott
>>
>>
>> Tom Martino wrote:
>>
>>> My plane flies perfectly. Not my opinion, it is the assessment of my
>>> test pilot. The ball is in the center and the plane flies "hands off"
>>> straight and level.
>>>
>>> I will keep looking.
>>>
>>> -----Original Message-----
>>> From: Scott Derrick [mailto:scott at tnstaafl.net]
>>> Sent: Tuesday, February 15, 2005 9:18 AM
>>> To: Velocity Aircraft Owners and Builders list
>>> Subject: Re: REFLECTOR: FUEL FEED [heur]
>>>
>>> A leaking gas cap can cause uneven fuel flow but is not the prime
>>> culprit. A bit of fuel valve lube applied to the O ring once a year
>>> will
>>>
>>> insure this doesn't happen.
>>>
>>> A miss-rigged airplane is most likely the cause. Shim your rudders so
>>> the ball is right in the middle and you will get perfect fuel flow.
>>>
>>> To test, be sure your turn and bank is installed correctly first,
>>> garbage in garbage out. Then fly, this is the fun part.. Once you
>>> see an
>>>
>>> uneven condition, press on the rudder that will put the ball in the
>>> middle. If you want to even up the tanks fast, press on the correct
>>> rudder so the ball is on the other side for a couple minutes, you'll
>>> see
>>>
>>> the fuel even up and even go into the opposite imbalance if you keep
>>> the
>>>
>>> rudder depressed. Then hold the rudder so the ball is centered, fuel
>>> will flow as it was designed to.
>>>
>>> Scott
>>>
>>> Tom Martino wrote:
>>>
>>>
>>>
>>>> Well, now that I'm in my test flying mode ... I will really be asking
>>>> a lot of questions.
>>>>
>>>> Here are some of them, as they relate to my fuel system:
>>>>
>>>> 1. What makes the fuel tanks feed unevenly to the header tank/engine?
>>>> (My right tank is feeding twice as fast as my right tank.)
>>>>
>>>> 2. Will that cause a problem when the fast-feeding tank runs out?
>>>>
>>>> 3. I used the larger vent lines for my tanks and tied them al together
>>>>
>>>>
>>>
>>>
>>>
>>>> with a manifold, then vented the entire system out through the top of
>>>> my firewall in the engine compartment (about four inches below my naca
>>>>
>>>>
>>>
>>>
>>>
>>>> duct). Do you think the system gets enough venting there?
>>>>
>>>> 4. Is there a need for a "whistle" hole in any of the tank vents ...
>>>> for additional venting (like we do with the crankcase breather?
>>>>
>>>> Any help is appreciated from my more experienced Velocitologists J
>>>>
>>>> Tom
>>>>
>>>> N173EX
>>>>
>>>> (A mere 6 hours)
>>>>
>>>> -----------------------------------------------------------------------
>>>>
>>>>
>>>>
>>> -
>>>
>>>
>>>> _______________________________________________
>>>> To change your email address, visit
>>>>
>>>>
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>>
>>>> Visit the gallery! www.tvbf.org/gallery
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail
>>>> Check old archives:
>>>> http://www.tvbf.org/archives/velocity/maillist.html
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
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>>>
>>>
>>> _______________________________________________
>>> To change your email address, visit
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>>>
>>>
>>>
>>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Wed, 16 Feb 2005 09:14:06 -0700
>> From: Scott Derrick <scott at tnstaafl.net>
>> Subject: Re: REFLECTOR: FUEL FEED [heur]
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>> Message-ID: <4213714E.5060705 at tnstaafl.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>>
>> I think it is extremly dangerous to vent the fuel system into the engine
>> compartment!
>>
>> Why would anybody do that???
>>
>> Scott
>>
>> Ron Brown wrote:
>>
>>> Tom,
>>>
>>> I don't think it is a good idea to vent the fuel system into the
>>> engine compartment, especially if you happen to flip upside down
>>> during a crash landing. You will have lots of fuel draining out the
>>> vent system into the hot engine compartment.
>>>
>>> With the factory designed fuel vent line routed up to the top of the
>>> firewall then back down to exit the bottom of the fuselage, fuel will
>>> not leak out of the vent system when the airplane is upside down.
>>>
>>> One other thought on uneven fuel flow, even if the vents are tied
>>> together and the plane is flying level/ball centered: there is a
>>> possibility that an air bubble trapped in the vent line with fuel on
>>> either side of the bubble can cause an uneven venting of the tanks.
>>> This wouldn't happen if the vent lines always slope upward to the
>>> manifold. I think this may be the scenario that Jim Sower is seeing
>>> from time to time. I have had it happen a couple of times on long
>>> trips after filling the tanks nearly full. After landing and parking
>>> in my hanger, the fuel tanks were 5 or so gallons different and
>>> remained that way until I opened the fuel caps. STRANGE! Wings are
>>> level when parked in the hanger. Another experiment - I placed a 2 x
>>> 6 under one main tire, simulating a wings down. Guess what - the fuel
>>> level difference was MUCH LESS than I have seen in the air.
>>>
>>> But again, it could be fuel caps that are not always sealing perfectly
>>> for every flight.
>>>
>>> Ronnie
>>>
>>> ----- Original Message ----- From: "Tom Martino"
>>> <tmartino at troubleshooter.com>
>>> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>>> Sent: Tuesday, February 15, 2005 12:23 PM
>>> Subject: RE: REFLECTOR: FUEL FEED [heur]
>>>
>>>
>>> My plane flies perfectly. Not my opinion, it is the assessment of my
>>> test pilot. The ball is in the center and the plane flies "hands off"
>>> straight and level.
>>>
>>> I will keep looking.
>>>
>>> -----Original Message-----
>>> From: Scott Derrick [mailto:scott at tnstaafl.net]
>>> Sent: Tuesday, February 15, 2005 9:18 AM
>>> To: Velocity Aircraft Owners and Builders list
>>> Subject: Re: REFLECTOR: FUEL FEED [heur]
>>>
>>> A leaking gas cap can cause uneven fuel flow but is not the prime
>>> culprit. A bit of fuel valve lube applied to the O ring once a year
>>> will
>>>
>>> insure this doesn't happen.
>>>
>>> A miss-rigged airplane is most likely the cause. Shim your rudders so
>>> the ball is right in the middle and you will get perfect fuel flow.
>>>
>>> To test, be sure your turn and bank is installed correctly first,
>>> garbage in garbage out. Then fly, this is the fun part.. Once you
>>> see an
>>>
>>> uneven condition, press on the rudder that will put the ball in the
>>> middle. If you want to even up the tanks fast, press on the correct
>>> rudder so the ball is on the other side for a couple minutes, you'll
>>> see
>>>
>>> the fuel even up and even go into the opposite imbalance if you keep
>>> the
>>>
>>> rudder depressed. Then hold the rudder so the ball is centered, fuel
>>> will flow as it was designed to.
>>>
>>> Scott
>>>
>>> Tom Martino wrote:
>>>
>>>> Well, now that I'm in my test flying mode ... I will really be asking
>>>> a lot of questions.
>>>>
>>>> Here are some of them, as they relate to my fuel system:
>>>>
>>>> 1. What makes the fuel tanks feed unevenly to the header tank/engine?
>>>> (My right tank is feeding twice as fast as my right tank.)
>>>>
>>>> 2. Will that cause a problem when the fast-feeding tank runs out?
>>>>
>>>> 3. I used the larger vent lines for my tanks and tied them al together
>>>
>>>
>>>
>>>> with a manifold, then vented the entire system out through the top of
>>>> my firewall in the engine compartment (about four inches below my naca
>>>
>>>
>>>
>>>> duct). Do you think the system gets enough venting there?
>>>>
>>>> 4. Is there a need for a "whistle" hole in any of the tank vents ...
>>>> for additional venting (like we do with the crankcase breather?
>>>>
>>>> Any help is appreciated from my more experienced Velocitologists J
>>>>
>>>> Tom
>>>>
>>>> N173EX
>>>>
>>>> (A mere 6 hours)
>>>>
>>>> -----------------------------------------------------------------------
>>>>
>>>
>>>
>>> -
>>>
>>>>
>>>> _______________________________________________
>>>> To change your email address, visit
>>>
>>>
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>>>
>>>> Visit the gallery! www.tvbf.org/gallery
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail
>>>> Check old archives:
>>>> http://www.tvbf.org/archives/velocity/maillist.html
>>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw =vbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>>
>>>
>>
>>
>> ------------------------------
>>
>> Message: 5
>> Date: Wed, 16 Feb 2005 09:16:44 -0700
>> From: Scott Derrick <scott at tnstaafl.net>
>> Subject: Re: REFLECTOR: FUEL FEED
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>> Message-ID: <421371EC.3080005 at tnstaafl.net>
>> Content-Type: text/plain; charset=windows-1252; format=flowed
>>
>> Jim,
>>
>> Obviously you have something really wrong or should I say "very
>> different" from the factory configuration.
>>
>> The proof is in the pudding.
>>
>> Find and correct that difference and your fuel flow would be per design.
>>
>> Scott
>>
>> Jim Sower wrote:
>>
>>>
>>>
>>> Scott Derrick wrote:
>>>
>>>> A leaking gas cap can cause uneven fuel flow but is not the prime
>>>> culprit. A bit of fuel valve lube applied to the O ring once a year
>>>> will insure this doesn't happen.
>>>>
>>>> A miss-rigged airplane is most likely the cause. Shim your rudders so
>>>> the ball is right in the middle and you will get perfect fuel flow.
>>>
>>>
>>> That's what I thought. It's the first thing I did. Leveled the
>>> airplane w/laser level, checked the ball centered, flew a couple of
>>> test hops and shimmed it to perfectly centered ball. Had no
>>> measurable effect AT ALL on assymmetric transfer.
>>>
>>>>
>>>> To test, be sure your turn and bank is installed correctly first,
>>>> garbage in garbage out. Then fly, this is the fun part.. Once you see
>>>> an uneven condition, press on the rudder that will put the ball in
>>>> the middle. If you want to even up the tanks fast, press on the
>>>> correct rudder so the ball is on the other side for a couple minutes,
>>>> you'll see the fuel even up and even go into the opposite imbalance
>>>> if you keep the rudder depressed. Then hold the rudder so the ball is
>>>> centered, fuel will flow as it was designed to.
>>>
>>>
>>> At full rudder deflection I was able to transfer maybe 1/2 gal / min.
>>> Took 10 minutes to transfer five gallons (that was on a GOOD day.
>>> Other days it was less.
>>>
>>> Sometimes nothing at all seems to work ... but I finally fixed it ...
>>> Jim S.
>>>
>>>>
>>>> Scott
>>>>
>>>> Tom Martino wrote:
>>>>
>>>>> Well, now that I'm in my test flying mode ... I will really be
>>>>> asking a lot of questions.
>>>>>
>>>>> Here are some of them, as they relate to my fuel system:
>>>>>
>>>>> 1. What makes the fuel tanks feed unevenly to the header
>>>>> tank/engine? (My right tank is feeding twice as fast as my right
>>>>> tank.)
>>>>>
>>>>> 2. Will that cause a problem when the fast-feeding tank runs out?
>>>>>
>>>>> 3. I used the larger vent lines for my tanks and tied them al
>>>>> together with a manifold, then vented the entire system out through
>>>>> the top of my firewall in the engine compartment (about four inches
>>>>> below my naca duct). Do you think the system gets enough venting
>>>>> there?
>>>>>
>>>>> 4. Is there a need for a "whistle" hole in any of the tank vents ...
>>>>> for additional venting (like we do with the crankcase breather?
>>>>>
>>>>> Any help is appreciated from my more experienced Velocitologists J
>>>>>
>>>>> Tom
>>>>>
>>>>> N173EX
>>>>>
>>>>> (A mere 6 hours)
>>>>>
>>>>> ------------------------------------------------------------------------
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> To change your email address, visit
>>>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>>>
>>>>> Visit the gallery! www.tvbf.org/gallery
>>>>> user:pw = tvbf:jamaicangoose
>>>>> Check new archives: www.tvbf.org/pipermail
>>>>> Check old archives:
>>>>> http://www.tvbf.org/archives/velocity/maillist.html
>>>>>
>>>> _______________________________________________
>>>> To change your email address, visit
>>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>>
>>>> Visit the gallery! www.tvbf.org/gallery
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail
>>>> Check old archives:
>>>> http://www.tvbf.org/archives/velocity/maillist.html
>>>>
>>>>
>>> ------------------------------------------------------------------------
>>>
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>
>>
>> ------------------------------
>>
>> Message: 6
>> Date: Wed, 16 Feb 2005 09:21:00 -0700
>> From: Scott Derrick <scott at tnstaafl.net>
>> Subject: Re: REFLECTOR: PREVENTING DRAFTS
>> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>> Message-ID: <421372EC.2050707 at tnstaafl.net>
>> Content-Type: text/plain; charset=windows-1252; format=flowed
>>
>> Scott,
>>
>> Most of the world doesn't fly in the hot box of Florida. Some of us
>> rarely see 75 degrees F. in flight. I never see above freezing during
>> the winter.
>>
>> The standard design of the RG system as far as sealing the cabin sucks..
>>
>> Scott
>>
>> Scott Baker wrote:
>>
>>> Why in the world would you want to seal off a small draft when it's
>>> 75-degrees outside?? ;-)
>>> Scott B.
>>>
>>> ----- Original Message -----
>>> *From:* Tom Martino <mailto:tmartino at troubleshooter.com>
>>> *To:* reflector at www.tvbf.org <mailto:reflector at www.tvbf.org>
>>> *Sent:* Tuesday, February 15, 2005 11:43 PM
>>> *Subject:* REFLECTOR: PREVENTING DRAFTS
>>>
>>> With the nose gear down and gear doors open . how do you guys keep
>>> air from rushing into the cockpit?
>>>
>>> I know I obviously have to install some kind of barrier . but I'm
>>> not sure of the configuration.
>>>
>>> Any ideas? Or better yet . any photos?
>>>
>>> Tom
>>>
>>> N173EX
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives:
>>> http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>> ------------------------------------------------------------------------
>>>
>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery! www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> Visit the gallery! tvbf:jamaicangoose
>>
>> End of Reflector Digest, Vol 9, Issue 53
>> ****************************************
>
>
>
> _______________________________________________
> To change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
>
> Visit the gallery! www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
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>
>
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