[NSRCA-discussion] triangulation trimming

krishlan fitzsimmons homeremodeling2003 at yahoo.com
Tue Mar 18 15:21:24 AKDT 2008


Ok Bryan, 
   
  Here's how I went out today and man was I suprised, 0 degree down thrust, 0 stab, 3/4 positive in the wing.. Cg forward where Budd recommends. What a difference.. I had a neutral elevator for the first time since I owned the plane without adjusting things.. Uplines were good, downlines pulled to the canopy still. Horizontal lines, the plane DID feel more locked into the line.. It's never felt like that.. Mixing, well it still needed about 15% up mix in knifes, down from 30% though. Inverted nearly hands off. 45 roll to inverted slowly drops the nose. 45 downs are locked in. Snaps, well they suck for some reason. Not from this, but when I did cg, and other changes before, I changed throws cuz the snaps sucked.  It took alot more down ele, and aileron for inverted snaps..  And still, when I start the snap, it breaks, then slowly gets into the snap, then speeds up too fast causing an overrotation. Regular snaps are now too fast (easy to cure though with a different dual rate
 setting). 
  I think my cg could go forward to help with the up ele needed in knife, and also the pull to canopy on downlines maybe?? Or should I play with the wing adjusters more?
   
  Thanks, 
   
  Chris
   
  
Nat Penton <natpenton at centurytel.net> wrote:
      Wayne
  You missed the seminar - that was the rest room <G>.
    ----- Original Message ----- 
  From: Wayne Galligan 
  To: NSRCA Mailing List 
  Sent: Tuesday, March 18, 2008 10:21 AM
  Subject: Re: [NSRCA-discussion] triangulation trimming
  

  John Crapper was not the original inventor of the toilet.  However Thomas Crapper was one of the people that was responsible for it popularity.  Not to sure where John L Crapper came from but  the original inventor was John Harington.  So maybe that's how the "John" and the "Crapper" have been come to be known as.
    ----- Original Message ----- 
  From: Wayne Galligan 
  To: NSRCA Mailing List 
  Sent: Tuesday, March 18, 2008 10:11 AM
  Subject: Re: [NSRCA-discussion] triangulation trimming
  

  Water Closet (WC) is a toilet that disposes of the waste by using water to flush it through a drainpipe to another location. Modern toilets incorporate an 'S' bend; this 'trap' creates a water seal which remains filled the 'S' bend also provides siphon action which helps accelerate the flushing process. Water filling up the bowl creates a high pressure area which forces the water past the S bend. At the S bend when water starts to move it creates a vacuum that pulls the water and waste out of the toilet. When no more water is left then the air stops the siphon or vacuum process. At that point the water that is going into the bowl continues to fill up the bowl to equalize the bowl and the S bend. This ends the cycle of one flush.  Since there were no rooms designated for toilets or crappers as they were called (named after John L Crapper, inventor of the flush toilet) the term Water Closet was coined as homes that had the out houses moved indoors were usually located in
 closets in the home.
   
  Flush away............
    ----- Original Message ----- 
  From: Karl G. Mueller 
  To: NSRCA Mailing List 
  Sent: Tuesday, March 18, 2008 10:45 AM
  Subject: Re: [NSRCA-discussion] triangulation trimming
  

  Vicente,
   
  "WC" actually is the short form of "Water Closet".
  That's what the early Toilets were called.
   
  Karl G. Mueller
kgamueller at rogers.com

    ----- Original Message ----- 
  From: vicenterc at comcast.net 
  To: adriancwong at earthlink.net ; NSRCA Mailing List 
  Sent: Monday, March 17, 2008 10:04 PM
  Subject: Re: [NSRCA-discussion] triangulation trimming
  

  WC = toilet. I wonder how many went and check.  
   
  --
Vicente "Vince" Bortone
   
  -------------- Original message -------------- 
From: adriancwong at earthlink.net 
  BODY {   FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: Geneva,Arial,Helvetica,sans-serif; BACKGROUND-COLOR: #ffffff  }      body{font-family: Geneva,Arial,Helvetica,sans-serif;font-size:9pt;background-color: #ffffff;color: black;}  "WC", huh? I haven't heard that word since I've moved back from Hong Kong in the early 90's. 

May be I should try the knife edge on a vertical down line, instead of doing it horizontally? 


  -----Original Message----- 
From: vicenterc at comcast.net 
Sent: Mar 17, 2008 7:00 PM 
To: adriancwong at earthlink.net, NSRCA Mailing List 
Subject: Re: [NSRCA-discussion] triangulation trimming 

  That is called Coriolis accerelation.  That is why the water closets flush to the right in the North hemisphere and to the left in the South hemisphere (looking the water closet from above).  If going down straight you are close to the ecuator.  If this do not happens as described the water closet needs to be trimmed. 
   
  --
Vicente "Vince" Bortone
   
  -------------- Original message -------------- 
From: adriancwong at earthlink.net 
I think Bryan is hiding in his wind tunnel trying to duplicate the same condition.

I don't think it was my digits. It's probably between the earth's gravitational pull and soething in the northern hemisphere. I bet the plane will do the exact opposite if I fly it in Australia ... .-)


  -----Original Message----- 
From: Derek Koopowitz 
Sent: Mar 17, 2008 3:36 PM 
To: NSRCA Mailing List 
Subject: Re: [NSRCA-discussion] triangulation trimming 

  I think he wishes it was his thumbs... :)
   
  The push to the belly was more than the pull to the canopy... the pull was very slight.


  On Mon, Mar 17, 2008 at 3:24 PM, krishlan fitzsimmons <homeremodeling2003 at yahoo.com> wrote:
    I was going to tell Adrian his thumbs cause this.. 
  Just kidding of course Adrian..
   
  C   

Nat Penton <natpenton at centurytel.net> wrote:

    Where is Bryan when you need him 

  ----- Original Message ----- 
From: 
To: "NSRCA Mailing List" 
Sent: Sunday, March 16, 2008 10:17 PM
Subject: Re: [NSRCA-discussion] triangulation trimming


> Bryan,
>
> What cause the plane to pull to the belly on one rudder, and to the canopy 
> on the other rudder during knife edge.
>
> Thx,
>
> Adrian
>
> -----Original Message-----
>>From: shinden1 at cox.net
>>Sent: Mar 16, 2008 7:17 PM
>>To: NSRCA Mailing List 

  >>Subject: Re: [NSRCA-discussion] triangulation trimming
>>
>>Lance you need to find out exactly where the wing inc . is.
>>I think if you move your c/g back a little it will help take some of the 
>>up trim out But you prob need more pos inc, in the wing so we need to know 
>>where you are at right now to determine exactly where to go
>>Bryan

     
  >>---- Lance Van Nostrand wrote:
>>> Bryan,
>>>
>>> The discussion list moves faster than I can try this stuff out. Too bad 
>>> I
>>> have to work...
>>>
>>> I first only moved my CG forward significantly and have improved overall
>>> tracking. It was windy Saturday and wind penetration were good. 
>>> Bryan's
>>> suggestion was correct on CG movement to make this improvement. However
>>> with the forward CG (and resultant uptrim) it pulls to the canopy 
>>> slightly
>>> on downlines. At this point I noticed that during inverted flight, 
>>> rudder
>>> input caused a pull to the belly (plane rose). This was weird. I then
>>> raised the incidence 2 turns and it fixed the inverted flight problem 
>>> but it
>>> seemed to make the canopy pul! l worse . Interestingly, KE flight was not
>>> noticeably affected.
>>>
>>> The other affect is that inverted 45 downlines drop toward earth faster 
>>> than
>>> upright 45s (which track nicely). Before this change, both 45s were 
>>> fine.
>>>
>>> Is this the expectation?
>>>
>>> --Lance
>>>
>>> _______________________________________________
>>> NSRCA-discussion mailing list
>>> NSRCA-discussion at lists.nsrca.org
>>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
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  Chris 
   
     
   
  
  
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Chris 
   
   
   

       
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