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First flight of N316JL

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jlatimer1(at)cox.net
Guest

Posted: Sun Jul 11, 2010 6:36 am Post subject: First flight of N316JL

Klaus,

 Thanks

  

 I don't really know the answer to your questions, but they  give me some things to look at.  I was too concerned about the fumes and  wanted to get back on the ground to check it out.  I was able to control  the airplane with the aileron trim and holding quite a bit of right aileron  pressure.  I weigh about 220 lbs, so I knew I my body mass would have an  affect on a 625 lb airplane's trim.

  

 During the next flight I hope to get a better handle on the  heavy left wing.  I plan on filling the right wing tank to see what that  does the balance of the airplane.

 Jerry

  



   From: owner-zenith-list-server(at)matronics.com  [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of Klaus  Truemper

Sent: Sunday, July 11, 2010 4:15 AM

To: Matronics  Zenith

Subject: Re: First flight of  N316JL

 

 Hi  Jerry,



Congratulations!! 



Left wing heavy: When you look out of  the cockpit onto the left

wing, how far down must the aileron be relative to  the trailing

edge, for wings level? This can be measured twice, once in  level

flight, say at cruise speed, and once with engine at idle rpm  and

best glide. 



The test will give an idea of the effect of engine  torque, and

also will tell how much is caused by the uneven weight  distribution with

pilot in left seat. You could compare this with the numbers  by other HDS builders.

I have not looked at this recently for my plane, but  would guess that

for cruise, the left aileron is down 1 to 1 1/2 inches, and  in glide about

half of that. 



Best wishes,



Klaus  



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   [quote][b]

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klaus(at)utdallas.edu
Guest

Posted: Sun Jul 11, 2010 2:06 pm Post subject: First flight of N316JL

Hi Jerry,



I did a test flight today to confirm how far the left aileron must be turned

down in level flight. The number I gave this morning is way too large.

According to the test flight, the left aileron is turned down approx. 1/2 inch

for level flight in cruise. Thus, that 1/2 inch handles both the single pilot

in the left seat and the torque produced by the Rotax engine.



Hope this helps.



Happy flying,



Klaus[url=http://www.utdallas.edu/%7Eklaus][/url]



 [quote][b]

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jlatimer1(at)cox.net
Guest

Posted: Sun Jul 11, 2010 4:43 pm Post subject: First flight of N316JL

Klaus,

Thanks



My plan right now is to double check the aileron rigging again.  If both are in line with the top of the wing, then I will shorten the left pushrod a couple of turns and lengthen the right pushrod a couple of turns, and then test fly it again.  The left aileron trim tab was at a pretty steep up angle and It almost had the left turn tendency trimmed out.  I will measure the tab angle and then see if my adjustments to pushrod length are having any affect.  

I don't want to make too big of an adjustment at any one time.



Jerry

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n801bh(at)netzero.com
Guest

Posted: Sun Jul 11, 2010 5:09 pm Post subject: First flight of N316JL

shortening one pushrod and lengthening the other will probably only change the position of your stick in flight, not correct the heavy wing. YMMV 

do not archive

Ben Haas

N801BH

www.haaspowerair.com



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jlatimer1(at)cox.net
Guest

Posted: Sun Jul 11, 2010 8:12 pm Post subject: First flight of N316JL

I agree Ben.  I thought about what I said after I hit the send.  I will need to increase the width of my existing trim tab or attach a bent stationary tab on the opposing aileron.  

Jerry

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backstagelive(at)gmail.co
Guest

Posted: Sun Jul 11, 2010 11:58 pm Post subject: First flight of N316JL

Don't take for granted that the engine mount is perfect because it came from 

the factory! Mine was way way off to the right and down! Jab said there were 

a few bad ones out there and mine was one of them. I sent it back and they 

returned to me a new mount that worked out. Take measurements befor you 

prime and paint the thing!



Joe

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n801bh(at)netzero.com
Guest

Posted: Mon Jul 12, 2010 5:20 am Post subject: First flight of N316JL

Good point and I would like to add.. DON'T trim the cowling to fit any mount  because if the mount is wrong and places the motor in the wrong location then your trimmed cowl that used the  incorrect prop centerline is now junk... Fitting cowlings should only have to be done once. 

Triple check the mount BEFORE you trim the cowl. !!! 

  

do not archive

Ben Haas

N801BH

www.haaspowerair.com



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jlatimer1(at)cox.net
Guest

Posted: Mon Jul 12, 2010 7:33 am Post subject: First flight of N316JL

I will double check the motor mount.  I did not have to trim the cowling.  The prop hub is in the center of the opening in the front.

Jerry

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