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tip up

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dhall(at)donka.net
Guest

Posted: Wed Aug 02, 2006 8:19 pm Post subject: tip up

I'm building a tip-up, so0 for me this is not a debate about that option.  

 I just have a question0 for the tip up crowd with experience in IMC...

  

 Does it leak when you're0 flying through occasional weather?  Any pointers from folks who have faced0 or addressed this problem?

  

 I would like low0 odds that my planned glass panel goes zzzzzt should I end up in some showery0 conditions...

  

  

  ******************************************

 Don0 Hall                 0 

  N517DG (registered)  

  rv7 fuselage

  http://rv7.donka.net

 ******************************************

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dan(at)rvproject.com
Guest

Posted: Wed Aug 02, 2006 9:01 pm Post subject: tip up

Mine doesn't leak in flight.  It leaks a bit through the front0 gap when sitting out in the rain uncovered.  So I cover it.

  

 )_( Dan

 RV-7 N714D (1021 hours)

 http://www.rvproject.com

 [quote]   ---

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Travelair

Joined: 22 Jun 2006
Posts: 1

Posted: Wed Aug 02, 2006 9:24 pm Post subject: tip up

Dear Don;

        We have just0 picked up our new RV7a(w/tiltup) from Florida and 

 did infact get into some rain coming home to the west0 coast, and yes 

 our feet did get wet. Once home and in the hangar, I0 found that there was 

 no rubber insulation in the tilt up hinge area, thus I0 believe that we have 

 found our problem ?

                                   0 Don

 [quote]   ---

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sa300(at)uniserve.com
Guest

Posted: Thu Aug 03, 2006 5:28 am Post subject: tip up

Mine doesn't leak in flight or on the ground. The water will enter if you open it in the rain. So to prevent the water from getting into the avionics I made a small eves trough to catch the run off and drain it to the side of the aircraft.

 

 Dan Checkoway wrote:  	  Quote: 	
		              Mine doesn't leak in flight.  It leaks a bit through the front gap when sitting out in the rain uncovered.  So I cover it.

    

   )_( Dan

   RV-7 N714D (1021 hours)

   http://www.rvproject.com

    	  Quote: 	
		       ----- Original Message ----- 

     From:     Don Hall (dhall(at)donka.net)     

     To:     rv7-list(at)matronics.com (rv7-list(at)matronics.com) 

     Sent: Wednesday, August 02, 2006 9:17 PM

     Subject: tip up

     

     

     I'm building a tip-up, so for me this is not a debate about that option.  

     I just have a question for the tip up crowd with experience in IMC...

      

     Does it leak when you're flying through occasional weather?  Any pointers from folks who have faced or addressed this problem?

      

     I would like low odds that my planned glass panel goes zzzzzt should I end up in some showery conditions...

      

      

          ******************************************

  Don Hall                  

      N517DG (registered)  

      rv7 fuselage

      http://rv7.donka.net

     ******************************************

      

   



No virus found in this incoming message.

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say.ahh1(at)verizon.net
Guest

Posted: Thu Aug 03, 2006 5:52 pm Post subject: tip up

After seeing many past threads on this problem and noting some builders 

at Osh who taped the front seam while their planes sat outside, has 

anyone done a redesign where the canopy does not use a pin hinge and 

expose the interior? For example, Lancair has the fuse sealed, with the 

canopy frame laying on this, and tilting up via two C arms in the comb 

similar to many car trunk designs. Thoughts?

Carl Peters

RV-9A empennage, debating tip-up vs. slider

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dhall(at)donka.net
Guest

Posted: Thu Aug 03, 2006 7:45 pm Post subject: tip up

For the curious, I heard0 a story about a tip-up guy whose radio went out passing through some0 rain.   He supposedly poured the water out of the radio after the0 flight.  

  

 >:O

  

 You can bet I'll be0 trying to think like a clever water drop when I get to finishing. 0 

  

 If you solve your problem, do tell. 0 Thanks!

  

  

  ******************************************

 Don0 Hall                 0 

  N517DG (registered)  

  rv7 fuselage

  http://rv7.donka.net

 ******************************************

  



   From: owner-rv7-list-server(at)matronics.com0 [mailto:owner-rv7-list-server(at)matronics.com] On Behalf Of0 travelair

Sent: Thursday, August 03, 2006 1:18 AM

To:0 rv7-list(at)matronics.com

Subject: Re: tip0 up

 

 Dear Don;

        We have just0 picked up our new RV7a(w/tiltup) from Florida and 

 did infact get into some rain coming home to the west0 coast, and yes 

 our feet did get wet. Once home and in the hangar, I0 found that there was 

 no rubber insulation in the tilt up hinge area, thus I0 believe that we have 

 found our problem ?

                                   0 Don

 [quote]   ---

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scott(at)randolphs.net
Guest

Posted: Thu Aug 03, 2006 8:37 pm Post subject: tip up

My tip up did leak in flight, and did cost me a radio repair as a result.  I

spent a bit of time working on it and it's been dry for a year now, though

it's probably only a matter of time before it leaks again.



There are several areas of concern:



The front edge of the canopy needs a good rubber seal that fills the whole

gap tightly.  This can be tricky to accomplish, especially at the lower

front corners which have to "slide" over the side of the fuselage.  This is

a less critcal area, though, as it's not likely water will get from there to

something expensive.  When I finally got my installed correctly and tightly

enough to avoid leakage I then had to deal with whistles from air flow

sneaking past, though I eventually whittled them away by gluing in little

bits of foam here and there to fill gaps and damp vibrations in the seal.



The bigger problem is the hinges.  I've not looked at the details on the -7

but I _think_ they're very similar to what's on my -6 and it's really tricky

to get it sealed up over the top of the hinges as they extend so close to

the forward skin and need to come up and forward as the canopy opens.  If

you're careful triming the skin in this area to leave yourself enough

backing for the seal you'll probably be okay.  I had to rely on stuffing it

full of profressional grade caulk and then carving out enough room for the

hinge to travel.  Ugly but it did finally work.



The third thing to watch out for are rivets and seams where the skin

attached to the bulkhead and makes the seat for the front of the canopy.  In

my plane there are a few small holes where the bulkhead was notched to

folder over in the curve and aren't _quite_ covered by the forward skin.

These have also been filled with caulk.  (thankfully they're not visible

with the canopy down)



Finally, I have some pop rivets in my canopy assembly that needed to be

filled with caulk where the stem "popped" out and left a hole in the middle

of the rivet. 



I've definitly heard folks compaining about leaks in their sliders too.  For

what little it's worth, though, if I had it to do again, I think I'd go

slider and sacrafice the uninterrupted view (which IS spectacular) so that

if water got in it landed on my head and upolstry instead of my panel.

There is also the issue of rain on the ramp and getting wet behind the panel

just getting into the aircraft (which also happened to me).



I've not done it yet, but some kind of removable "splash shield" over the

top of the avionics to protect them has been lurking in the back of my mind

for a while.



Scott

RV6a

550 hours

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dhall(at)donka.net
Guest

Posted: Mon Aug 14, 2006 2:41 pm Post subject: tip up

This thread was very helpful. Thanks to all.

Only thing missing is pics showing some of the things mentioned.  

If you have them, can you forward links or attachments?  



Thanks! 

******************************************

 Don Hall                  

 N517DG (registered)  

 rv7 fuselage

 http://rv7.donka.net

******************************************



--

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