RV10-List Digest Archive

Sat 04/24/10


Total Messages Posted: 14



Today's Message Index:
----------------------
 
     1. 02:53 AM - Re: aerosport overhead console (Bob Leffler)
     2. 02:53 AM - Re: 569JC (John MacCallum)
     3. 05:48 AM - Re: 569JC (Bill Mauledriver Watson)
     4. 02:12 PM - Re: 569JC (woxofswa)
     5. 02:17 PM - Re: was 569JC- now vacuum pump behavior with windmilling engine (Bill Mauledriver Watson)
     6. 02:36 PM - Re: Re: 569JC (Pascal)
     7. 02:43 PM - Re: was 569JC- now vacuum pump behavior with windmilling engine (Bob Turner)
     8. 03:05 PM - Re: Fuel sensor location (was N569JC) (Deems Davis)
     9. 03:49 PM - Re: Fuel sensor location (was N569JC) (DLM)
    10. 03:56 PM - Re: Re: 569JC (DLM)
    11. 04:06 PM - Re: Re: was 569JC- now vacuum pump behavior with windmilling engine (Bill Mauledriver Watson)
    12. 04:27 PM - Re: Re: 569JC (Jesse Saint)
    13. 07:03 PM - N402RH Fuel sensor location (RobHickman@aol.com)
    14. 08:33 PM - Re: aerosport overhead console (rvdave)
 
 
 


Message 1


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    Time: 02:53:47 AM PST US
    From: "Bob Leffler" <rv@thelefflers.com>
    Subject: aerosport overhead console
    I don't have any empirical data, but based upon conversation with Geoff Combs who has a green cabin cover and has seen my pink cabin cover there shouldn't be any difference in fit. The basic differences are in quality of finish. You may have more work filling and sanding with the green version. I would give Geoff a call directly. (614) 834-8659 bob -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of rvdave Sent: Friday, April 23, 2010 11:50 PM Subject: RV10-List: aerosport overhead console Has anyone tried fitting the carbon fiber overhead to the green cabin vs the pink that it was molded for? I don't know if there is any difference between the pink and green? -------- Dave Ford RV6 flying RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295520#295520


    Message 2


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    Time: 02:53:48 AM PST US
    From: "John MacCallum" <vk2gcn@cirruscomms.com.au>
    Subject: 569JC
    That=92s just an amazing story! I=92m doing SE CMD right now with about 35 hours in and that scenario I have thought about over and over. What if the big Fan stops when you=92re in IMC? All I can say is well Done and good on the technology that led you to that strip! cheers John MacCallum Builder 41016 From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Perry, Phil Sent: Saturday, 24 April 2010 9:11 AM Subject: RE: RV10-List: 569JC Here you go=85=85=85=85 See Below Phil Today I got lucky, real lucky. 3 Months ago to the day our RV-10 was signed off from a Kit to an Airplane, today it experienced its first and hopefully last engine failure. With 58 hours on the Hobbs she had until this point been the best 4 place airplane I=92ve ever flown. I had flown some friends from Pearland TX over to Victoria so they could pick up their motor home. A very non-eventful flight, a little bumpy VFR down at 2000 AGL, but an overcast layer prevented any higher. Once there I decided that I would file IFR for the flight back, get on top and enjoy some tailwinds. I left Victoria, climbed to 7000 and enjoyed some much needed sunlight. Houston Center was their normal cheerful self; all in all, life was good. I was cleared down to 4000, as luck would have the Overcast layer had also dropped a few thousand feet so I remained on Top=85 wow so nice, still don=92t have to be in the clunk! Center switched me to Approach, we agreed upon the GPS approach back to Pearland, and I was cleared to the IAF. Up until this point everything was absolutely great! I started my decent out of 4, down to 3000 going direct the IAF=85 At 3400 ft, that=92s when the adrenalin started pumping. Now I=92ll be honest, I don=92t=92 know if I heard the prop fluctuate or not, but something got my attention. I did a quick engine check and saw that EGT=92s where high=85 very very high. I knew immediately I had a problem, but I had no idea just how bad the problem was. Training kicked in and Mixture to rich, boost pump on, tank switch. The EGT=92s came down, but they didn=92t stop coming down. When I saw them drop below 200 or so, and I was getting no reaction what-so-ever from the throttle=85 Well, Houston We Have A Problem. I declared the Emergency=85 If you ever want to hear a frequency go totally quiet, just use those words. Informed Approach of a total power failure and requested vectors to the nearest airport. Houston Approach was for the most part absolutely wonderful. Without missing a beat they informed me that Brazoria was 7=92Oclock and 5 miles. I IMMEDIATELY started the turn and realized that with my now wonderful tailwind turned headwind, there was no way I was going to make it. Let me back up just a bit=85 All this is happing IMC. I entered the overcast layer at about 3800 FT, bases are reported anywhere between 1000-1500 depending on which ASOS you listen to. Continuing on=85. Not going to make Brazoria, I know I have to do something. Glancing at my EFIS Map I see that =BE a mile away is a private strip that Center probably didn=92t even know existed. I turn directly at that airport (7R9), informed Approach where I was going, then I waited, and waited, and waited=85. Not much else I could think to do at the time. Still IMC. Engine Out. I didn=92t really think I=92d be in this situation, ever. =BC mile from the airport, at 1300 ft I break out. Guys & Gals, I haven=92t been so happy to see a perfectly mowed grass strip in my life! A quick turn away to burn Airspeed and Altitude, slip to final, and down we come. The landing went perfect, it was downwind. I didn=92t care, the airplane didn=92t care. The prop finally quit windmilling in the flair, telling me that it really was dead, as if I didn=92t know. I managed to get us (me and the plane) on the ground, unhurt, out of that situation. Is it all skill, well I=92d like to think so=85 but I know better! I got lucky, very lucky. What went wrong? The short version: a fuel line broke. The long version: During final assembly it came to my attention that people with the Fuel Flow transducer in the =93Tunnel=94 where experiencing FF fluctuation when using the electric pump. The fix? Move the FF Transducer to between the Fuel Injection Servo and the Spider. Well, that=92s what I did. When I relocated the Transducer I had to fabricate a line between the Servo and the Transducer. The line I fabricated was =BC inch aluminum, that was the flaw. That line broke just outside the fitting. When I made that line I made sure it wasn=92t under any stress, in a natural position, etc. Apparently that was not enough. Now, I will say this. This was the one component of the airplane I was never quite happy with. It just =93didn=92t look right=94. I had some other builders take a look, half heartedly hoping they would tell me that aluminum was bad and I should change it, but no one did. So it stayed, and worked fine for 58 hours. https://dl.dropbox.com/u/5834625/RV10/photo%203.jpg I blame no one but myself for what happened. A part of me knew that that line wasn=92t right, yet I talked myself into believing it was fine. Don=92t ever short change your gut=85 most of the time its got good instincts! She=92s now grounded, awaiting Stainless Tubing so I can make the fuel like the way I originally envisioned. Parts should be here next week, and the adventure will continue. Now comes the part where I=92d like to thank the people that helped me stay alive today! First my Father, Kirk. You see, I started flying Ultralights at 14, and it was he who preached at me to practice engine outs. They where 2 strokes, and it wasn=92t =93if=94 they would quit, it was =93when=94. I never lost an engine flying Ultralights, but I sure practiced. My Flight Instructors. All you guys (and there has been a few..) who would randomly pull power, then say =93Now what?=94 Rob Hickman and the entire crew at Advanced Flight Systems. Without those awesome EFIS=92s (and I really do mean awesome) I probably would have never known that the airport I landed at was there. It didn=92t show up on the 430, Approach didn=92t know, and I was stuck IMC. And the data logging.. wow. I poured over every second of that flight to find out when exactly I converted from ASEL to Glider=85 Having that data is invaluable. John Cram (build partner) and Rick Carr for selfless gathering their own tools and driving to my rescue. With their help we where able to fabricate a new fuel line ferry the airplane the 22 miles home. The entire group of local airport bums that showed up to offer a helping hand. I only wish I could remember each and everyone=92s name, but that is not my strong suit. I owe all of you at least a beer! Last but not least=85 Brazoria County Constables and Sheriff=92s (no less than 5) who showed up, lights and sirens agoin, to come to my rescue. Thankfully I didn=92t need it, but it sure is nice to know that help is on the way. In case anyone wants to know how fast this happens. Total time from Me turning on the Fuel Pump to wheels on the ground: 2 Minutes 46 seconds. https://dl.dropbox.com/u/5834625/RV10/EntireFlight.jpg https://dl.dropbox.com/u/5834625/RV10/landing.jpg From: DLM [mailto:dlm46007@cox.net] Sent: Friday, April 23, 2010 5:57 PM Subject: RV10-List: 569JC Anyone know the story yet? http://www.matronics.com/Navigator?RV10-List http://forums.matronics.com http://www.matronics.com/contribution


    Message 3


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    Time: 05:48:45 AM PST US
    From: Bill Mauledriver Watson <MauleDriver@nc.rr.com>
    Subject: Re: 569JC
    Nick, really, really nice job piloting (period). Sitting in the virtual cockpit with you, I'm imagining that it must be nice not having to transition off a vacuum powered anything when you lost power. And the situational awareness of the glass has to be sweet. Would be curious to hear any thoughts of why there wasn't a fire. Bill "fully awake this morning" Watson 40605


    Message 4


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    Time: 02:12:37 PM PST US
    Subject: Re: 569JC
    From: "woxofswa" <woxof@aol.com>
    Great story. Just last week I was on the phone with the folks who make the red cube transducer and they too told me that putting it in the tunnel like Van's shows on the prints is a bad idea. The other thing they told me and that they were emphatic about was that you must use FLEX line both in and out of the cube. In fact they suggested no hard line anywhere between any mounted components in the fuel system. They said that different masses get different vibration patterns and will crack the hard lines. -------- Myron Nelson Mesa, AZ Emp completed, QB wings completed, legacy build fuse in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295572#295572


    Message 5


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    Time: 02:17:08 PM PST US
    From: Bill Mauledriver Watson <MauleDriver@nc.rr.com>
    Subject: Re: was 569JC- now vacuum pump behavior with windmilling engine
    I realize that the 569JC discussion is over on VAF but I'd like to ask a question I just realized I don't have a clue about... If you lose your engine and the prop is windmilling, does your vacuum pump still generate enough suck to power the gyros? Or does the horizon just slowly fall over? (assuming you have vac powered gyros) Thanks, Bill Bill Mauledriver Watson wrote: > <MauleDriver@nc.rr.com> > > Nick, really, really nice job piloting (period). > > Sitting in the virtual cockpit with you, I'm imagining that it must be > nice not having to transition off a vacuum powered anything when you > lost power. And the situational awareness of the glass has to be sweet. > > Would be curious to hear any thoughts of why there wasn't a fire. > > Bill "fully awake this morning" Watson > 40605 > >


    Message 6


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    Time: 02:36:34 PM PST US
    From: "Pascal" <rv10builder@verizon.net>
    Subject: Re: 569JC
    I believe Vans has their Demo plane setup per the plans and they haven't had issues. I recall asking support about this a while back and they stated all their planes are setup with the aluminum tube and never had an issue. The plane with this issue has his cube in the engine area by the servo to avoid reported fuel pump issue (high GPH readings when on) not the tunnel- he would have known he had a problem if it was in the tunnel the fuel smell would have given that away- lucky there was not fire in the engine area. P -------------------------------------------------- From: "woxofswa" <woxof@aol.com> Sent: Saturday, April 24, 2010 2:09 PM Subject: RV10-List: Re: 569JC > > Great story. > > Just last week I was on the phone with the folks who make the red cube > transducer and they too told me that putting it in the tunnel like Van's > shows on the prints is a bad idea. The other thing they told me and that > they were emphatic about was that you must use FLEX line both in and out > of the cube. In fact they suggested no hard line anywhere between any > mounted components in the fuel system. They said that different masses > get different vibration patterns and will crack the hard lines. > > -------- > Myron Nelson > Mesa, AZ > Emp completed, QB wings completed, legacy build fuse in progress > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=295572#295572 > > >


    Message 7


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    Time: 02:43:11 PM PST US
    Subject: Re: was 569JC- now vacuum pump behavior with windmilling engine
    From: "Bob Turner" <bobturner@alum.rpi.edu>
    Depends.... but most vacuum pump installations generate enough flow to power the gyros even at idle (look at the vacuum pressure gauge, is it in the green?). so if the engine windmills at 1000 rpm or more, and usually it will (depends on the prop, if there's internal damage, etc), then yes, the gyros will work. If this wasn't true, then a 172 making a long idle power descent thru the clouds might suddenly find the gyros didn't work! -------- Bob Turner RV-10 QB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295576#295576


    Message 8


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    Time: 03:05:25 PM PST US
    From: Deems Davis <deemsdavis@cox.net>
    Subject: Re: Fuel sensor location (was N569JC)
    FWIW, I'm in the process of changing the location of my fuel flow sensor. I had it in the stock Van's tunnel location. And as others reported that location yeilds a higher than normal reading when the fuel pump is turned on. However, it also gives me fluctuations in the instantaneous readings. Typically they are +/- .2-.4 gph. But occasionally can vary as much as +/- .8 gph. For purposes of fuel totalizator functions, it doesn't appear to cause much of a problem. As the totals are within .1-.2 gals a fill up. I suppose because the +'s and -'s offset each other. But I've been working on tuning my fuel injection via the restrictors, with the desired goal of getting to +/- .1 _ .3 gph variation between cylinders, and despite all of my best efforts with data logging to capture data, it's just not good enough. So after talking with Don @ Airflow, he stated that the best place for the sensor is between the servo and the dist spider. I've been playing with this for the past couple of days and it looks like I can position the sensor on the corner of the sump under the #1 cyl. Its going to require 2 new integral firesleeved SS/teflon hoses, and the install will be close quarters, but it appears it should work. The FloScan installation instructions call for the sensor to be wrapped in firesleeve, and that makes supporting the sensor and fuel lines a challenge. Deems Davis N519PJ www.deemsrv10.com On 4/24/2010 2:29 PM, Pascal wrote: > > I believe Vans has their Demo plane setup per the plans and they > haven't had issues. I recall asking support about this a while back > and they stated all their planes are setup with the aluminum tube and > never had an issue. > The plane with this issue has his cube in the engine area by the servo > to avoid reported fuel pump issue (high GPH readings when on) not the > tunnel- he would have known he had a problem if it was in the tunnel > the fuel smell would have given that away- lucky there was not fire in > the engine area. > P > > -------------------------------------------------- > From: "woxofswa" <woxof@aol.com> > Sent: Saturday, April 24, 2010 2:09 PM > To: <rv10-list@matronics.com> > Subject: RV10-List: Re: 569JC > >> >> Great story. >> >> Just last week I was on the phone with the folks who make the red >> cube transducer and they too told me that putting it in the tunnel >> like Van's shows on the prints is a bad idea. The other thing they >> told me and that they were emphatic about was that you must use FLEX >> line both in and out of the cube. In fact they suggested no hard >> line anywhere between any mounted components in the fuel system. >> They said that different masses get different vibration patterns and >> will crack the hard lines. >> >> -------- >> Myron Nelson >> Mesa, AZ >> Emp completed, QB wings completed, legacy build fuse in progress >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=295572#295572 >> >> >> >> >> >> >> >> >> >> > >


    Message 9


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    Time: 03:49:22 PM PST US
    From: "DLM" <dlm46007@cox.net>
    Subject: Fuel sensor location (was N569JC)
    I believe the key is no aluminum hard lines firewall forward; I had Halon lines in aluminum running from the firewall bulkhead fitting to the carb air box and from the bulkhead fitting to the sprayer over the engine on my Glastar. Both lines initially failed due to vibration. After using an intermediate rubber tube to isolate the airframe from engine vibrations and properly securing the sprayer , the problem was solved. However this would not work with fuel lines; stainless or SS Teflon flex lines are imperative. Aluminum hard lines have been used and approved in certified aircraft (airframe) for many years. As a side note hydraulic return lines in my Cardinal RG twice cracked the flare at the electric pump and allowed 5606 to leak. Fortunately the leaks occurred and were observed on the ground. _____ From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Deems Davis Sent: Saturday, April 24, 2010 3:03 PM Subject: Re: RV10-List: Fuel sensor location (was N569JC) FWIW, I'm in the process of changing the location of my fuel flow sensor. I had it in the stock Van's tunnel location. And as others reported that location yeilds a higher than normal reading when the fuel pump is turned on. However, it also gives me fluctuations in the instantaneous readings. Typically they are +/- .2-.4 gph. But occasionally can vary as much as +/- .8 gph. For purposes of fuel totalizator functions, it doesn't appear to cause much of a problem. As the totals are within .1-.2 gals a fill up. I suppose because the +'s and -'s offset each other. But I've been working on tuning my fuel injection via the restrictors, with the desired goal of getting to +/- .1 _ .3 gph variation between cylinders, and despite all of my best efforts with data logging to capture data, it's just not good enough. So after talking with Don @ Airflow, he stated that the best place for the sensor is between the servo and the dist spider. I've been playing with this for the past couple of days and it looks like I can position the sensor on the corner of the sump under the #1 cyl. Its going to require 2 new integral firesleeved SS/teflon hoses, and the install will be close quarters, but it appears it should work. The FloScan installation instructions call for the sensor to be wrapped in firesleeve, and that makes supporting the sensor and fuel lines a challenge. Deems Davis N519PJ www.deemsrv10.com On 4/24/2010 2:29 PM, Pascal wrote: <rv10builder@verizon.net> I believe Vans has their Demo plane setup per the plans and they haven't had issues. I recall asking support about this a while back and they stated all their planes are setup with the aluminum tube and never had an issue. The plane with this issue has his cube in the engine area by the servo to avoid reported fuel pump issue (high GPH readings when on) not the tunnel- he would have known he had a problem if it was in the tunnel the fuel smell would have given that away- lucky there was not fire in the engine area. P -------------------------------------------------- From: "woxofswa" <mailto:woxof@aol.com> <woxof@aol.com> Sent: Saturday, April 24, 2010 2:09 PM Subject: RV10-List: Re: 569JC <woxof@aol.com> Great story. Just last week I was on the phone with the folks who make the red cube transducer and they too told me that putting it in the tunnel like Van's shows on the prints is a bad idea. The other thing they told me and that they were emphatic about was that you must use FLEX line both in and out of the cube. In fact they suggested no hard line anywhere between any mounted components in the fuel system. They said that different masses get different vibration patterns and will crack the hard lines. -------- Myron Nelson Mesa, AZ Emp completed, QB wings completed, legacy build fuse in progress Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295572#295572


    Message 10


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    Time: 03:56:21 PM PST US
    From: "DLM" <dlm46007@cox.net>
    Subject: Re: 569JC
    All the more reason for a fire bottle; note the fire handle in the picture. System is plumbed to two sprayers; one over the engine and one aft of the rear cylinder baffles -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Pascal Sent: Saturday, April 24, 2010 2:30 PM Subject: Re: RV10-List: Re: 569JC I believe Vans has their Demo plane setup per the plans and they haven't had issues. I recall asking support about this a while back and they stated all their planes are setup with the aluminum tube and never had an issue. The plane with this issue has his cube in the engine area by the servo to avoid reported fuel pump issue (high GPH readings when on) not the tunnel- he would have known he had a problem if it was in the tunnel the fuel smell would have given that away- lucky there was not fire in the engine area. P -------------------------------------------------- From: "woxofswa" <woxof@aol.com> Sent: Saturday, April 24, 2010 2:09 PM Subject: RV10-List: Re: 569JC > > Great story. > > Just last week I was on the phone with the folks who make the red cube > transducer and they too told me that putting it in the tunnel like > Van's shows on the prints is a bad idea. The other thing they told me > and that they were emphatic about was that you must use FLEX line both > in and out of the cube. In fact they suggested no hard line anywhere > between any mounted components in the fuel system. They said that > different masses get different vibration patterns and will crack the hard lines. > > -------- > Myron Nelson > Mesa, AZ > Emp completed, QB wings completed, legacy build fuse in progress > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=295572#295572 > > >


    Message 11


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    Time: 04:06:52 PM PST US
    From: Bill Mauledriver Watson <MauleDriver@nc.rr.com>
    Subject: Re: was 569JC- now vacuum pump behavior with windmilling
    engine That all makes sense. Just couldn't think it through. Thanks! Bob Turner wrote: > > Depends.... > but most vacuum pump installations generate enough flow to power the gyros even at idle (look at the vacuum pressure gauge, is it in the green?). so if the engine windmills at 1000 rpm or more, and usually it will (depends on the prop, if there's internal damage, etc), then yes, the gyros will work. > > If this wasn't true, then a 172 making a long idle power descent thru the clouds might suddenly find the gyros didn't work! > > -------- > Bob Turner > RV-10 QB > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=295576#295576 > > >


    Message 12


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    Time: 04:27:00 PM PST US
    From: Jesse Saint <jesse@saintaviation.com>
    Subject: Re: 569JC
    The floscan people said absolutely no rigid lines with the transducer in the engine compartment, but they didn't say that for inside firewall mounting. Much less vibration there. Do not archive Jesse Saint Saint Aviation jesse@saintaviation.com 352-427-0285 Sent from my iPhone On Apr 24, 2010, at 5:29 PM, "Pascal" <rv10builder@verizon.net> wrote: > > I believe Vans has their Demo plane setup per the plans and they > haven't had issues. I recall asking support about this a while back > and they stated all their planes are setup with the aluminum tube > and never had an issue. > The plane with this issue has his cube in the engine area by the > servo to avoid reported fuel pump issue (high GPH readings when on) > not the tunnel- he would have known he had a problem if it was in > the tunnel the fuel smell would have given that away- lucky there > was not fire in the engine area. > P > > -------------------------------------------------- > From: "woxofswa" <woxof@aol.com> > Sent: Saturday, April 24, 2010 2:09 PM > To: <rv10-list@matronics.com> > Subject: RV10-List: Re: 569JC > >> >> Great story. >> >> Just last week I was on the phone with the folks who make the red >> cube transducer and they too told me that putting it in the tunnel >> like Van's shows on the prints is a bad idea. The other thing they >> told me and that they were emphatic about was that you must use >> FLEX line both in and out of the cube. In fact they suggested no >> hard line anywhere between any mounted components in the fuel >> system. They said that different masses get different vibration >> patterns and will crack the hard lines. >> >> -------- >> Myron Nelson >> Mesa, AZ >> Emp completed, QB wings completed, legacy build fuse in progress >> >> >> >> >> Read this topic online here: >> >> http://forums.matronics.com/viewtopic.php?p=295572#295572 >> >> >> >> >> >> >> >> >> > >


    Message 13


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    Time: 07:03:53 PM PST US
    From: RobHickman@aol.com
    Subject: N402RH Fuel sensor location
    This is how I mounted it in my RV-10 _http://picasaweb.google.com/lh/photo/IpZAMWzeY7fiT9lprJGZqQ?feat=directlink _ (http://picasaweb.google.com/lh/photo/IpZAMWzeY7fiT9lprJGZqQ?feat=directlink) Rob Hickman N402RH


    Message 14


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    Time: 08:33:22 PM PST US
    Subject: Re: aerosport overhead console
    From: "rvdave" <davidbf@centurytel.net>
    When I spoke with Geoff last he mentioned the mold was built around the pink cabin and wasn't sure the differences between pink and green covers. You are probably right, the differences are probably minor and can be filled or corrected. Now just deciding whether I want the overhead or go with something else just for pilot/copilot lighting. I'm trying to justify the idea of lighting, air front/back with overhead. -------- Dave Ford RV6 flying RV10 building Cadillac, MI Read this topic online here: http://forums.matronics.com/viewtopic.php?p=295604#295604




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