Today's Message Index:
----------------------
 
     1. 07:54 AM - Re: Alternate Air intake (Pascal)
     2. 08:21 AM - Re: Alternate Air intake (Jae Chang)
     3. 09:01 AM - Re: Alternate Air intake (Phillip Perry)
     4. 09:36 AM - Re: Alternate Air intake (DLM)
     5. 09:39 AM - Re: Alternate Air intake (Pascal)
     6. 09:42 AM - Re: Alternate Air intake (Pascal)
     7. 09:48 AM - Re: Alternate Air intake (Tim Olson)
     8. 10:56 AM - Re: Alternate Air intake (pilotdds)
     9. 11:37 AM - Zulu & Bose (curtis groote)
    10. 11:37 AM - Re: Alternate Air intake (Miller John)
    11. 11:52 AM - Re: Alternate Air intake (Miller John)
    12. 05:46 PM - Re: Alternate Air intake (Jesse Saint)
    13. 06:34 PM - Re: Alternate Air intake (Roger Standley)
    14. 06:37 PM - Re: Alternate Air intake (John Gonzalez)
    15. 06:51 PM - Re: Alternate Air intake (DLM)
    16. 06:57 PM - Re: Alternate Air intake (Dick & Vicki Sipp)
    17. 07:10 PM - Re: Alternate Air intake (Linn Walters)
    18. 08:05 PM - Re: Alternate Air intake (Roger Standley)
    19. 08:21 PM - Re: Alternate Air intake (Dave Saylor)
    20. 08:23 PM - countersinks/dimples (Rick Lark)
    21. 09:01 PM - Re: Alternate Air intake (Rob Kochman)
    22. 09:01 PM - Re: countersinks/dimples (Phillip Perry)
 
 
 
Message 1
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      insurance! yes I have it installed for the engine.
      no, I hope I never need it, but if the inlet gets plugged I'll be darn 
      glad to have it.
      if you mean the alt air for static, inside the cabin, no I have other 
      redundancies to make up for that failure.
      
      On this topic, what have others done to cover the alt air knob so it 
      does not get confused for a brake, or heat.. Mine sits in the Vans stock 
      position (left of throttle) and I fear I may pull it one night by 
      mistake.
      Pascal
      
      
      From: Phillip Perry 
      Sent: Wednesday, December 29, 2010 8:53 PM
      Subject: RV10-List: Alternate Air intake
      
      
      I'm just curious how many people have alternate air intake doors on 
      their airplanes and if anyone has seen a need for one?
      
      Thanks,
      Phil
      
      
Message 2
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
        I have it installed. While installing it, I recalled a story from a 
      friend of mine.
      
      As a much younger and bolder pilot, he ended up flying his C182 in near 
      white-out snowy conditions. He said all of the snow he had injested had 
      blocked up his air filter giving him issues. I don't recall all the 
      details, but he was lucky to get it down at an airport that miraculously 
      appeared in front of him, to the amazement of the FBO workers.
      
      Jae
      40533
      
      On 12/29/2010 8:53 PM, Phillip Perry wrote:
      >
      > I'm just curious how many people have alternate air intake doors on 
      > their airplanes and if anyone has seen a need for one?
      >
      > Thanks,
      > Phil
      >
      > *
      > *
      
Message 3
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      Yeah I'm not asking about the static, that's pretty easy and I have it
      installed.   I'm more concerned with a blocked filter scenario.
      
      Does anyone have photos of their installation?  Cowling mods, etc?  I'm
      trying to get my mind around the plumbing, etc.
      
      Thanks for the help,
      Phil
      
Message 4
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      The letters STOP on the knob; my buddy did pull it once; and yes it is 
      possible to close it manually by an alumimium tube several feet long 
      underneath the aircraft. cowling was not removed.
        ----- Original Message ----- 
        From: Pascal 
        To: rv10-list@matronics.com 
        Sent: Thursday, December 30, 2010 8:50 AM
        Subject: Re: RV10-List: Alternate Air intake
      
      
        insurance! yes I have it installed for the engine.
        no, I hope I never need it, but if the inlet gets plugged I'll be darn 
      glad to have it.
        if you mean the alt air for static, inside the cabin, no I have other 
      redundancies to make up for that failure.
      
        On this topic, what have others done to cover the alt air knob so it 
      does not get confused for a brake, or heat.. Mine sits in the Vans stock 
      position (left of throttle) and I fear I may pull it one night by 
      mistake.
        Pascal
      
      
        From: Phillip Perry 
        Sent: Wednesday, December 29, 2010 8:53 PM
        To: rv10-list@matronics.com 
        Subject: RV10-List: Alternate Air intake
      
      
        I'm just curious how many people have alternate air intake doors on 
      their airplanes and if anyone has seen a need for one?
      
        Thanks,
        Phil
      
      
      href="http://www.aeroelectric.com">www.aeroelectric.com
      href="http://www.buildersbooks.com">www.buildersbooks.com
      href="http://www.homebuilthelp.com">www.homebuilthelp.com
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      s.com/Navigator?RV10-List
      href="http://forums.matronics.com">http://forums.matronics.com
      
      
Message 5
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      When you get the FAB it has the directions. It is basically a hole under 
      the center of the airbox/air filter with a guillotine type door, it goes 
      back through the firewall and, in my case, sits next to the throttle. 
      That is all completely stock.
      When you ask for a cowling mod.. are you getting a non stock cowling? 
      engine? etc? otherwise you're thinking this too hard, it is all pretty 
      simple stuff.
      Pascal
      
      
      From: Phillip Perry 
      Sent: Thursday, December 30, 2010 8:57 AM
      Subject: Re: RV10-List: Alternate Air intake
      
      
      Yeah I'm not asking about the static, that's pretty easy and I have it 
      installed.   I'm more concerned with a blocked filter scenario.
      
      Does anyone have photos of their installation?  Cowling mods, etc?  I'm 
      trying to get my mind around the plumbing, etc.
      
      Thanks for the help,
      Phil
      
      
Message 6
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      
      From: Phillip Perry 
      Sent: Thursday, December 30, 2010 8:57 AM
      Subject: Re: RV10-List: Alternate Air intake
      
      
      Yeah I'm not asking about the static, that's pretty easy and I have it 
      installed.   I'm more concerned with a blocked filter scenario.
      
      Does anyone have photos of their installation?  Cowling mods, etc?  I'm 
      trying to get my mind around the plumbing, etc.
      
      Thanks for the help,
      Phil
      
      
Message 7
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      
      There's nothing really to it.  It's a guillotine type valve
      on the bottom of the airbox.  You pull the cable and the
      blade swings open and opens a hole directly into your
      intake....inside the filter.
      
      There was a maintenance issue with this, BTW....rivets in
      fibergalss...no aluminum backing...not good.  I fixed
      mine recently:
      http://www.myrv10.com/N104CD/maintenance/20090503/index.html
      
      Here's the bottom of the box:
      http://www.myrv10.com/N104CD/engine/20051127/RV200511220080.html
      
      So there really isn't any plumbing required.
      
      Tim Olson - RV-10 N104CD
      
      
      On 12/30/2010 10:57 AM, Phillip Perry wrote:
      > Yeah I'm not asking about the static, that's pretty easy and I have it
      > installed.   I'm more concerned with a blocked filter scenario.
      >
      > Does anyone have photos of their installation?  Cowling mods, etc?  I'm
      > trying to get my mind around the plumbing, etc.
      >
      > Thanks for the help,
      > Phil
      >
      > *
      
      
Message 8
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      I have used the alternate air in a mooney when the air filter presumably ic
      ed up-wings were ice protected-mp gradually dropped to 14 inches with a tub
      ocharged engine-activating the alternate air returned power to near normal-
      safety dictates having the option to bypass the airfilter.Another thing to 
      watch for are the rivets in the vans airbox pulling through the glass-this 
      happened to one of mine-I replaced them with small screws and washers+ a li
      ttle extra glass,I was an early version that had a trapdoor desined to auto
      matically open like a c-206 or 210.Vans issued a S.B. to go to a manual sys
      tem.It was the manual system that developed loose rivets in the glass.-Happ
      y new year and lets go for 0 accidents in 2011-jim
      
      
      -----Original Message-----
      From: Pascal <rv10builder@verizon.net>
      Sent: Thu, Dec 30, 2010 9:39 am
      Subject: Re: RV10-List: Alternate Air intake
      
      
      When you get the FAB it has the directions. It is basically a hole under th
      e center of the airbox/air filter with a guillotine type door, it goes back
       through the firewall and, in my case, sits next to the throttle. That is a
      ll completely stock.
      When you ask for a cowling mod.. are you getting a non stock cowling? engin
      e? etc? otherwise you're thinking this too hard, it is all pretty simple st
      uff.
      Pascal
      
      
      From: Phillip Perry 
      Sent: Thursday, December 30, 2010 8:57 AM
      Subject: Re: RV10-List: Alternate Air intake
      
      
      Yeah I'm not asking about the static, that's pretty easy and I have it inst
      alled.   I'm more concerned with a blocked filter scenario.
      Does anyone have photos of their installation?  Cowling mods, etc?  I'm try
      ing to get my mind around the plumbing, etc.
      Thanks for the help,
      Phil
      
      href="http://www.aeroelectric.com">www.aeroelectric.com
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Message 9
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  | 
      
      
      
      I have a Bose X and two Zulu's. -I wear the Zulu because it's a bit quiet
      er and of no wear discomfort. - My wife likes the X because it's smaller/
      lighter.=0A=0A=0A      
      
Message 10
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      I agree with Dave.
      
      My knob is painted white (all others black) with red letters on it  
      saying ALT AIR.
      
      I can push mine close from underneath as well with long screwdriver or  
      something similar.
      
      grumpy
      
      do not archive
      
      On Dec 30, 2010, at 11:27 AM, DLM wrote:
      
      > The letters STOP on the knob; my buddy did pull it once; and yes it  
      > is possible to close it manually by an alumimium tube several feet  
      > long underneath the aircraft. cowling was not removed.
      > ----- Original Message -----
      > From: Pascal
      > To: rv10-list@matronics.com
      > Sent: Thursday, December 30, 2010 8:50 AM
      > Subject: Re: RV10-List: Alternate Air intake
      >
      > insurance! yes I have it installed for the engine.
      > no, I hope I never need it, but if the inlet gets plugged I'll be  
      > darn glad to have it.
      > if you mean the alt air for static, inside the cabin, no I have  
      > other redundancies to make up for that failure.
      >
      > On this topic, what have others done to cover the alt air knob so it  
      > does not get confused for a brake, or heat.. Mine sits in the Vans  
      > stock position (left of throttle) and I fear I may pull it one night  
      > by mistake.
      > Pascal
      >
      > From: Phillip Perry
      > Sent: Wednesday, December 29, 2010 8:53 PM
      > To: rv10-list@matronics.com
      > Subject: RV10-List: Alternate Air intake
      >
      > I'm just curious how many people have alternate air intake doors on  
      > their airplanes and if anyone has seen a need for one?
      >
      > Thanks,
      > Phil
      >
      >
      > href="http://www.aeroelectric.com">www.aeroelectric.com
      > href="http://www.buildersbooks.com">www.buildersbooks.com
      > href="http://www.homebuilthelp.com">www.homebuilthelp.com
      > href="http://www.matronics.com/contribution">http://www.matronics.com/chref= 
      > "http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
      > href="http://forums.matronics.com">http://forums.matronics.com
      >
      >
      > href="http://www.aeroelectric.com">www.aeroelectric.com
      > href="http://www.buildersbooks.com">www.buildersbooks.com
      > href="http://www.homebuilthelp.com">www.homebuilthelp.com
      > href="http://www.matronics.com/contribution">http://www.matronics.com/chref= 
      > "http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
      > href="http://forums.matronics.com">http://forums.matronics.com
      >
      >
      
      
Message 11
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      Like Tim, I did not like just the stock kit.
      
      So I modified mine by adding a large aluminum plate on the bottom of  
      the fiberglass housing.  That gave a solid base for the door.
      
      Then I added 2 long bolts (fwd and aft bolts on bottom picture) that  
      go from the bottom plate to the top plate for added security.
      
      grumpy
      
      
      On Dec 30, 2010, at 11:45 AM, Tim Olson wrote:
      
      >
      > There's nothing really to it.  It's a guillotine type valve
      > on the bottom of the airbox.  You pull the cable and the
      > blade swings open and opens a hole directly into your
      > intake....inside the filter.
      >
      > There was a maintenance issue with this, BTW....rivets in
      > fibergalss...no aluminum backing...not good.  I fixed
      > mine recently:
      > http://www.myrv10.com/N104CD/maintenance/20090503/index.html
      >
      > Here's the bottom of the box:
      > http://www.myrv10.com/N104CD/engine/20051127/RV200511220080.html
      >
      > So there really isn't any plumbing required.
      >
      > Tim Olson - RV-10 N104CD
      >
      >
      > On 12/30/2010 10:57 AM, Phillip Perry wrote:
      >> Yeah I'm not asking about the static, that's pretty easy and I have  
      >> it
      >> installed.   I'm more concerned with a blocked filter scenario.
      >>
      >> Does anyone have photos of their installation?  Cowling mods, etc?   
      >> I'm
      >> trying to get my mind around the plumbing, etc.
      >>
      >> Thanks for the help,
      >> Phil
      >>
      >> *
      >
      >
      
      
Message 12
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      There have already been a lot of replies, but IIRC, the plans call the 
      trap door in the front of the FAB the "alternate air" and the one on the 
      bottom the "air filter bypass".  I think the air filter bypass is 
      definitely needed, but not the alternate air, which really, as Tim 
      mentioned, just acts as a carb heat.  I have personally never had to use 
      either.  In the case of icing conditions, I can see how the alternate 
      air could possibly be a help that could avoid needing to bypass the 
      filter, but beyond that one scenario, the alternate air seems to add no 
      service.  I always install the bypass door so it an be closed by pushing 
      the knob, but I realize that if it has to be used, it will likely not 
      need to be closed again in flight, so that's probably not very 
      important.
      
      Jesse Saint
      Saint Aviation, Inc.
      jesse@saintaviation.com
      C: 352-427-0285
      F: 815-377-3694
      
      On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      
      > Yeah I'm not asking about the static, that's pretty easy and I have it 
      installed.   I'm more concerned with a blocked filter scenario.
      > 
      > Does anyone have photos of their installation?  Cowling mods, etc?  
      I'm trying to get my mind around the plumbing, etc.
      > 
      > Thanks for the help,
      > Phil
      > 
      > 
      > 
      
      
Message 13
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      I don't usually get worked up over threads like this but I have a 
      problem with any control in the cabin that is not reversible. Under what 
      conditions (scenario) would you pull such a control, realizing that once 
      you did, you can't reverse it? I am not trying to be ornery here, just 
      trying to learn something so please educate me.
      
      Roger
      
      -----
        Original Message ----- 
        From: Jesse Saint<mailto:jesse@saintaviation.com> 
        To: rv10-list@matronics.com<mailto:rv10-list@matronics.com> 
        Sent: Thursday, December 30, 2010 5:41 PM
        Subject: Re: RV10-List: Alternate Air intake
      
      
        There have already been a lot of replies, but IIRC, the plans call the 
      trap door in the front of the FAB the "alternate air" and the one on the 
      bottom the "air filter bypass".  I think the air filter bypass is 
      definitely needed, but not the alternate air, which really, as Tim 
      mentioned, just acts as a carb heat.  I have personally never had to use 
      either.  In the case of icing conditions, I can see how the alternate 
      air could possibly be a help that could avoid needing to bypass the 
      filter, but beyond that one scenario, the alternate air seems to add no 
      service.  I always install the bypass door so it an be closed by pushing 
      the knob, but I realize that if it has to be used, it will likely not 
      need to be closed again in flight, so that's probably not very 
      important. 
      
      
        Jesse Saint
        Saint Aviation, Inc.
        jesse@saintaviation.com<mailto:jesse@saintaviation.com>
        C: 352-427-0285
        F: 815-377-3694 
      
      
        On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      
      
          Yeah I'm not asking about the static, that's pretty easy and I have 
      it installed.   I'm more concerned with a blocked filter scenario.
      
          Does anyone have photos of their installation?  Cowling mods, etc?  
      I'm trying to get my mind around the plumbing, etc.
      
          Thanks for the help,
          Phil
      
      
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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      3D
      www.aeroelectric.com<about:3D"http://www.aeroelectric.com">
      www.buildersbooks.com<about:3D"http://www.buildersbooks.com">
      www.homebuilthelp.com<about:3D"http://www.homebuilthelp.com">
      http://www.matronics.com/contribution<about:3D"http://www.matronics.com/c
      ontribution">
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      3D
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      s.com/Navigator?RV10-List">
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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      3D
      http://forums.matronics.com<about:3D"http://forums.matronics.com">
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      3D
      
Message 14
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| Subject:  | Alternate Air intake | 
      
      
      How about using fuel tank sealant on the airfilter bypass door in addition 
      to the rivets??
      As for also installing the carburator heat door=2C seems to me that activat
      ing this door once the realization of icing or hail would be prudent and ma
      y allow one to not have to activate the "air filter bypass door". Seeing th
      at the later cannot be closed in flight=2C the carb heat door would be the 
      first line of defense.
      Shut down proceedures might also be to close the Carb heat door to keep sno
      w=2C nesting birds=2C other critters or insects out. 
      Just thinking out loud. 
      getting close to paint
      John G
      
      From: jesse@saintaviation.com
      Subject: Re: RV10-List: Alternate Air intake
      
      
      There have already been a lot of replies=2C but IIRC=2C the plans call the 
      trap door in the front of the FAB the "alternate air" and the one on the bo
      ttom the "air filter bypass".  I think the air filter bypass is definitely 
      needed=2C but not the alternate air=2C which really=2C as Tim mentioned=2C 
      just acts as a carb heat.  I have personally never had to use either.  In t
      he case of icing conditions=2C I can see how the alternate air could possib
      ly be a help that could avoid needing to bypass the filter=2C but beyond th
      at one scenario=2C the alternate air seems to add no service.  I always ins
      tall the bypass door so it an be closed by pushing the knob=2C but I realiz
      e that if it has to be used=2C it will likely not need to be closed again i
      n flight=2C so that's probably not very important.
      
      Jesse Saint
      Saint Aviation=2C Inc.
      jesse@saintaviation.com
      C: 352-427-0285
      F: 815-377-3694
      
      
      On Dec 30=2C 2010=2C at 11:57 AM=2C Phillip Perry wrote:Yeah I'm not asking
       about the static=2C that's pretty easy and I have it installed.   I'm more
       concerned with a blocked filter scenario.
      Does anyone have photos of their installation?  Cowling mods=2C etc?  I'm t
      rying to get my mind around the plumbing=2C etc.
      Thanks for the help=2C
      
      Phil
      
      
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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      3D
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      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
      3D
      3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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Message 15
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| Subject:  | Re: Alternate Air intake | 
      
      The control only bypasses filtering air to the engine. So a ground reset 
      is not an issue. If it is ever used the PIC won't be worrying about 
      reset but getting the iced up 10 on the ground.
        ----- Original Message ----- 
        From: Roger Standley 
        To: rv10-list@matronics.com 
        Sent: Thursday, December 30, 2010 7:31 PM
        Subject: Re: RV10-List: Alternate Air intake
      
      
        I don't usually get worked up over threads like this but I have a 
      problem with any control in the cabin that is not reversible. Under what 
      conditions (scenario) would you pull such a control, realizing that once 
      you did, you can't reverse it? I am not trying to be ornery here, just 
      trying to learn something so please educate me.
      
        Roger
      
        -----
          Original Message ----- 
          From: Jesse Saint 
          To: rv10-list@matronics.com 
          Sent: Thursday, December 30, 2010 5:41 PM
          Subject: Re: RV10-List: Alternate Air intake
      
      
          There have already been a lot of replies, but IIRC, the plans call 
      the trap door in the front of the FAB the "alternate air" and the one on 
      the bottom the "air filter bypass".  I think the air filter bypass is 
      definitely needed, but not the alternate air, which really, as Tim 
      mentioned, just acts as a carb heat.  I have personally never had to use 
      either.  In the case of icing conditions, I can see how the alternate 
      air could possibly be a help that could avoid needing to bypass the 
      filter, but beyond that one scenario, the alternate air seems to add no 
      service.  I always install the bypass door so it an be closed by pushing 
      the knob, but I realize that if it has to be used, it will likely not 
      need to be closed again in flight, so that's probably not very 
      important. 
      
      
          Jesse Saint
          Saint Aviation, Inc.
          jesse@saintaviation.com
          C: 352-427-0285
          F: 815-377-3694 
      
      
          On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      
      
            Yeah I'm not asking about the static, that's pretty easy and I 
      have it installed.   I'm more concerned with a blocked filter scenario.
      
            Does anyone have photos of their installation?  Cowling mods, etc? 
       I'm trying to get my mind around the plumbing, etc.
      
            Thanks for the help,
            Phil
      
      
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Message 16
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| Subject:  | Re: Alternate Air intake | 
      
      
      Think about a bird strike that plugs the normal air intake.  There is no 
      harm done in actuating the alternate air door, the engine operation not 
      be effected much if at all and there would be no need to reverse until 
      after landing.  I know it is not designed to be =9Cclosed in 
      flight=9D but my control will open and close the door at least 
      with the engine shut down and on the ground.  I have not tried it in 
      flight.
      
      Dick Sipp
      N110DV 300 hours
      
      I don't usually get worked up over threads like this but I have a 
      problem with any control in the cabin that is not reversible. Under what 
      conditions (scenario) would you pull such a control, realizing that once 
      you did, you can't reverse it? I am not trying to be ornery here, just 
      trying to learn something so please educate me.
      
      Roger
      
      -----
        Original Message ----- 
        From: Jesse Saint 
        To: rv10-list@matronics.com 
        Sent: Thursday, December 30, 2010 5:41 PM
        Subject: Re: RV10-List: Alternate Air intake
      
        There have already been a lot of replies, but IIRC, the plans call the 
      trap door in the front of the FAB the "alternate air" and the one on the 
      bottom the "air filter bypass".  I think the air filter bypass is 
      definitely needed, but not the alternate air, which really, as Tim 
      mentioned, just acts as a carb heat.  I have personally never had to use 
      either.  In the case of icing conditions, I can see how the alternate 
      air could possibly be a help that could avoid needing to bypass the 
      filter, but beyond that one scenario, the alternate air seems to add no 
      service.  I always install the bypass door so it an be closed by pushing 
      the knob, but I realize that if it has to be used, it will likely not 
      need to be closed again in flight, so that's probably not very 
      important. 
      
        Jesse Saint
        Saint Aviation, Inc.
        jesse@saintaviation.com
        C: 352-427-0285
        F: 815-377-3694 
      
        On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      
      
          Yeah I'm not asking about the static, that's pretty easy and I have 
      it installed.   I'm more concerned with a blocked filter scenario.
      
          Does anyone have photos of their installation?  Cowling mods, etc?  
      I'm trying to get my mind around the plumbing, etc.
      
          Thanks for the help,
          Phil
      
      
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Message 17
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| Subject:  | Re: Alternate Air intake | 
      
      I'm with Roger ..... and since I'm not to that point, please tell me 
      what prevents installation of a 'reversible' bypass control???
      Linn
      
      
      On 12/30/2010 9:31 PM, Roger Standley wrote:
      > I don't usually get worked up over threads like this but I have a 
      > problem with any control in the cabin that is not reversible. Under 
      > what conditions (scenario) would you pull such a control, realizing 
      > that once you did, you can't reverse it? I am not trying to be ornery 
      > here, just trying to learn something so please educate me.
      > Roger
      > -----
      >
      >     Original Message -----
      >     *From:* Jesse Saint <mailto:jesse@saintaviation.com>
      >     *To:* rv10-list@matronics.com <mailto:rv10-list@matronics.com>
      >     *Sent:* Thursday, December 30, 2010 5:41 PM
      >     *Subject:* Re: RV10-List: Alternate Air intake
      >
      >     There have already been a lot of replies, but IIRC, the plans call
      >     the trap door in the front of the FAB the "alternate air" and the
      >     one on the bottom the "air filter bypass".  I think the air filter
      >     bypass is definitely needed, but not the alternate air, which
      >     really, as Tim mentioned, just acts as a carb heat.  I have
      >     personally never had to use either.  In the case of icing
      >     conditions, I can see how the alternate air could possibly be a
      >     help that could avoid needing to bypass the filter, but beyond
      >     that one scenario, the alternate air seems to add no service.  I
      >     always install the bypass door so it an be closed by pushing the
      >     knob, but I realize that if it has to be used, it will likely not
      >     need to be closed again in flight, so that's probably not very
      >     important.
      >
      >     Jesse Saint
      >     Saint Aviation, Inc.
      >     jesse@saintaviation.com <mailto:jesse@saintaviation.com>
      >     C: 352-427-0285
      >     F: 815-377-3694
      >
      >     On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      >
      >>     Yeah I'm not asking about the static, that's pretty easy and I
      >>     have it installed.   I'm more concerned with a blocked filter
      >>     scenario.
      >>
      >>     Does anyone have photos of their installation?  Cowling mods,
      >>     etc?  I'm trying to get my mind around the plumbing, etc.
      >>
      >>     Thanks for the help,
      >>     Phil
      >>
      >>     *
      >>
      >>     *
      >
      >     *
      >
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Message 18
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| Subject:  | Re: Alternate Air intake | 
      
      OK, agreed. But let's follow this icing scenario. I am flying along and 
      notice a drop in MP as the filter and maybe a drop in AS as the pitot 
      ices up. I add throttle and get little response, maybe a drop in EGT. So 
      I suspect icing? I pull Alt Air (it's reversible). MP gradually 
      increases. AS continues to drop. I look at the GPS ground speed and see 
      no change. I am thinking, the pitot is icing over, the engine filter was 
      icing over but the Alt Air is working and keeping the engine going near 
      normal. I descent looking for warmer air.
      
      Is this the right way to work through this?
      
      Roger
        ----- Original Message ----- 
        From: DLM<mailto:dlm34077@q.com> 
        To: rv10-list@matronics.com<mailto:rv10-list@matronics.com> 
        Sent: Thursday, December 30, 2010 6:48 PM
        Subject: Re: RV10-List: Alternate Air intake
      
      
        The control only bypasses filtering air to the engine. So a ground 
      reset is not an issue. If it is ever used the PIC won't be worrying 
      about reset but getting the iced up 10 on the ground.
          ----- Original Message ----- 
          From: Roger Standley<mailto:taildragon@msn.com> 
          To: rv10-list@matronics.com<mailto:rv10-list@matronics.com> 
          Sent: Thursday, December 30, 2010 7:31 PM
          Subject: Re: RV10-List: Alternate Air intake
      
      
          I don't usually get worked up over threads like this but I have a 
      problem with any control in the cabin that is not reversible. Under what 
      conditions (scenario) would you pull such a control, realizing that once 
      you did, you can't reverse it? I am not trying to be ornery here, just 
      trying to learn something so please educate me.
      
          Roger
      
          -----
            Original Message ----- 
            From: Jesse Saint<mailto:jesse@saintaviation.com> 
            To: rv10-list@matronics.com<mailto:rv10-list@matronics.com> 
            Sent: Thursday, December 30, 2010 5:41 PM
            Subject: Re: RV10-List: Alternate Air intake
      
      
            There have already been a lot of replies, but IIRC, the plans call 
      the trap door in the front of the FAB the "alternate air" and the one on 
      the bottom the "air filter bypass".  I think the air filter bypass is 
      definitely needed, but not the alternate air, which really, as Tim 
      mentioned, just acts as a carb heat.  I have personally never had to use 
      either.  In the case of icing conditions, I can see how the alternate 
      air could possibly be a help that could avoid needing to bypass the 
      filter, but beyond that one scenario, the alternate air seems to add no 
      service.  I always install the bypass door so it an be closed by pushing 
      the knob, but I realize that if it has to be used, it will likely not 
      need to be closed again in flight, so that's probably not very 
      important. 
      
      
            Jesse Saint
            Saint Aviation, Inc.
            jesse@saintaviation.com<mailto:jesse@saintaviation.com>
            C: 352-427-0285
            F: 815-377-3694 
      
      
            On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      
      
              Yeah I'm not asking about the static, that's pretty easy and I 
      have it installed.   I'm more concerned with a blocked filter scenario.
      
              Does anyone have photos of their installation?  Cowling mods, 
      etc?  I'm trying to get my mind around the plumbing, etc.
      
              Thanks for the help,
              Phil
      
      
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      s.com/Navigator?RV10-List
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Message 19
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      
      The way the valve is designed uses a small channel to locate the gate
      in place.  If you saw it, it would make perfect sense, and I wish I
      had a picture--the plans on Tim's site are a different (older?) style
      than I have.  On mine, there's no mechanism to guide the gate back
      into the closed position once it's been opened.  Someone could design
      a heavier and more complicated mechanism to be closed from the cabin.
      
      I've never opened mine in flight.  I drilled a small hole through the
      knob and tied it down with break-away wire so I have to give it a
      pretty good tug to open it.  I sealed the valve with a thin layer of
      silicone to keep unfiltered air out of the intake.  I test it once a
      year before I remove the FAB at annual time.
      
      The rubber part of my filter wore through the floor of the FAB after
      about two years.  I ended up basically rebuilding the bottom of the
      FAB in aluminum, including the alternate air valve.
      
      Ice, birds, a big leaf, or a plastic bag are all things I've thought
      about fouling the intake.  The ground-resettable valve is a pretty
      good compromise.
      
      Dave Saylor
      AirCrafters
      140 Aviation Way
      Watsonville, CA 95076
      831-722-9141 Shop
      831-750-0284 Cell
      
      
      On Thu, Dec 30, 2010 at 7:06 PM, Linn Walters <pitts_pilot@bellsouth.net> wrote:
      > I'm with Roger ..... and since I'm not to that point, please tell me what
      > prevents installation of a 'reversible' bypass control???
      > Linn
      >
      >
      > On 12/30/2010 9:31 PM, Roger Standley wrote:
      >
      > I don't usually get worked up over threads like this but I have a problem
      > with any control in the cabin that is not reversible. Under what conditions
      > (scenario) would you pull such a control, realizing that once you did, you
      > can'treverse it? I am not trying to be ornery here, just trying to learn
      > something so please educate me.
      >
      > Roger
      >
      > -----
      >
      > Original Message -----
      > From: Jesse Saint
      > To: rv10-list@matronics.com
      > Sent: Thursday, December 30, 2010 5:41 PM
      > Subject: Re: RV10-List: Alternate Air intake
      > There have already been a lot of replies, but IIRC, the plans call the trap
      > door in the front of the FAB the "alternate air" and the one on the bottom
      > the "air filter bypass". I think the air filter bypass is definitely
      > needed, but not the alternate air, which really, as Tim mentioned, just acts
      > as a carb heat. I have personally never had to use either. In the case of
      > icing conditions, I can see how the alternate air could possibly be a help
      > that could avoid needing to bypass the filter, but beyond that one scenario,
      > the alternate air seems to add no service. I always install the bypass door
      > so it an be closed by pushing the knob, but I realize that if it has to be
      > used, it will likely not need to be closed again in flight, so that's
      > probably not very important.
      > Jesse Saint
      > Saint Aviation, Inc.
      > jesse@saintaviation.com
      > C: 352-427-0285
      > F: 815-377-3694
      > On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      >
      > Yeah I'm not asking about the static, that's pretty easy and I have it
      > installed. I'm more concerned with a blocked filter scenario.
      >
      > Does anyone have photos of their installation? Cowling mods, etc? I'm
      > trying to get my mind around the plumbing, etc.
      >
      > Thanks for the help,
      > Phil
      >
      >
      > 3D============================================
      > title='about:3D"http://www.aeroelectric.com"'
      > href='3D"http://www.aeroelectric.com"'>www.aeroelectric.com
      > title='about:3D"http://www.buildersbooks.com"'
      > href='3D"http://www.buildersbooks.com"'>www.buildersbooks.com
      > title='about:3D"http://www.homebuilthelp.com"'
      > href='3D"http://www.homebuilthelp.com"'>www.homebuilthelp.com
      > title='about:3D"http://www.matronics.com/contribution"'
      > href='3D"http://www.matronics.com/contribution"'>http://www.matronics.com/contribution
      > 3D============================================
      > title='about:3D"http://www.matronics.com/Navigator?RV10-List"'
      > href='3D"http://www.matronics.com/Navigator?RV10-List"'>http://www.matronics.com/Navigator?RV10-List
      > 3D============================================
      > href='3D"http://forums.matronics.com"'>http://forums.matronics.com
      > 3D============================================
      >
      >
      
      
Message 20
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  | 
      
      
| Subject:  | countersinks/dimples | 
      
      Guys
      -
      I need some opinions.- I'm working on the main wing spars, and have a deb
      ate on going-with a couple of builders.
      -
      The question is how deep do you make a countersink in the spar flange to ne
      st the dimples in the wing skin?
      -
      I've been told (by a reliable source) to make the countersink only deep eno
      ugh so that when a rivet is dropped into the countersunk hole, you should s
      ee a thin line around the top of the rivet.- However at this depth, the w
      ing skin does not lay completely tight to the spar flange.
      -
      When I use a scrap and make a test dimple, the countersink is-deeper than
       the "thin line" method I've been told.
      -
      All opinions welcomed.
      -
      Regards,
      -
      Rick
      #40956
      Southampton, Ont
      -
      -
      -
      -
      -=0A=0A
      
Message 21
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  | 
      
      
| Subject:  | Re: Alternate Air intake | 
      
      I put epoxy/flox between the FAB and aluminum plate.  I was then paranoid
      about the rivets and/or the extra epoxy/flox getting loose and sucked up
      into the engine, so I put tank sealant over everything.  Now if the tank
      sealant gets loose....
      
      
      On Thu, Dec 30, 2010 at 6:35 PM, John Gonzalez <indigoonlatigo@msn.com>wrote:
      
      > How about using fuel tank sealant on the airfilter bypass door in addition
      > to the rivets??
      >
      > As for also installing the carburator heat door, seems to me that
      > activating this door once the realization of icing or hail would be prudent
      > and may allow one to not have to activate the "air filter bypass door".
      > Seeing that the later cannot be closed in flight, the carb heat door would
      > be the first line of defense.
      >
      > Shut down proceedures might also be to close the Carb heat door to keep
      > snow, nesting birds, other critters or insects out.
      >
      > Just thinking out loud.
      >
      > getting close to paint
      >
      > John G
      >
      > ------------------------------
      > From: jesse@saintaviation.com
      >
      > Subject: Re: RV10-List: Alternate Air intake
      > Date: Thu, 30 Dec 2010 20:41:52 -0500
      >
      > To: rv10-list@matronics.com
      >
      > There have already been a lot of replies, but IIRC, the plans call the trap
      > door in the front of the FAB the "alternate air" and the one on the bottom
      > the "air filter bypass".  I think the air filter bypass is definitely
      > needed, but not the alternate air, which really, as Tim mentioned, just acts
      > as a carb heat.  I have personally never had to use either.  In the case of
      > icing conditions, I can see how the alternate air could possibly be a help
      > that could avoid needing to bypass the filter, but beyond that one scenario,
      > the alternate air seems to add no service.  I always install the bypass door
      > so it an be closed by pushing the knob, but I realize that if it has to be
      > used, it will likely not need to be closed again in flight, so that's
      > probably not very important.
      >
      > Jesse Saint
      > Saint Aviation, Inc.
      > jesse@saintaviation.com
      > C: 352-427-0285
      > F: 815-377-3694
      >
      >  On Dec 30, 2010, at 11:57 AM, Phillip Perry wrote:
      >
      > Yeah I'm not asking about the static, that's pretty easy and I have it
      > installed.   I'm more concerned with a blocked filter scenario.
      > Does anyone have photos of their installation?  Cowling mods, etc?  I'm
      > trying to get my mind around the plumbing, etc.
      > Thanks for the help,
      > Phil
      >
      > *
      > *
      >
      >
      > *
      >
      >
      > 3D============================================
      > s.com
      > on
      >
      > 3D=======================================
      > 3D====
      > RV10-List
      >
      > 3D=======================================
      > 3D====
      > 3D=============================================*
      >
      > *
      >
      >
      
      
      -- 
      Rob Kochman
      RV-10 "Finishing" Kit
      Woodinville, WA (near Seattle)
      http://kochman.net/N819K
      
Message 22
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  | 
      
      
| Subject:  | Re: countersinks/dimples | 
      
      I countersink slightly more than the rivet so the skins will lay flat.
      
      Phil
      
      
      On Thu, Dec 30, 2010 at 10:21 PM, Rick Lark <larkrv10@yahoo.ca> wrote:
      
      > Guys
      >
      > I need some opinions.  I'm working on the main wing spars, and have a
      > debate on going with a couple of builders.
      >
      > The question is how deep do you make a countersink in the spar flange to
      > nest the dimples in the wing skin?
      >
      > I've been told (by a reliable source) to make the countersink only deep
      > enough so that when a rivet is dropped into the countersunk hole, you should
      > see a thin line around the top of the rivet.  However at this depth, the
      > wing skin does not lay completely tight to the spar flange.
      >
      > When I use a scrap and make a test dimple, the countersink is deeper than
      > the "thin line" method I've been told.
      >
      > All opinions welcomed.
      >
      > Regards,
      >
      > Rick
      > #40956
      > Southampton, Ont
      >
      >
      > *
      >
      >
      
 
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