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<DIV>Me too since I am triming the plane. I think the effect of the elevator is far more than the effect of the incidence when flying knife edge. I still think that I need to reduce the incidence so I will need less down trim when flying level. Therefore, that down trim will have less effect when flying knife edge. Is this correct? </DIV>
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<DIV>Vince</DIV>
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<DIV><FONT face=Arial size=2>Nat,</FONT></DIV>
<DIV><FONT face=Arial size=2>Please explain why this would be so. I am very curious of this.</FONT></DIV>
<DIV><FONT face=Arial size=2>--Lance</FONT></DIV>
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<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=natpenton@centurytel.net href="mailto:natpenton@centurytel.net">Nat Penton</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 06, 2005 1:35 PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Abbra first fly report</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Vince, if you decrease the wing incidence you will need more up elevater mix for the knife edges, not less. Let us all know how it turns out. Nat</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B> <A title=vicenterc@comcast.net href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org href="mailto:discussion@nsrca.org">NSRCA</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, June 03, 2005 9:52 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Abbra first fly report</DIV>
<DIV><BR></DIV>
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<P class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center" align=center><B style="mso-bidi-font-weight: normal">Abbra glow version 1<SUP>st</SUP>. Fly report<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></B></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt; TEXT-ALIGN: center" align=center><SPAN style="mso-spacerun: yes"></SPAN> </P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Yesterday, June 3, 2005 I flew my Abbra the first time.<SPAN style="mso-spacerun: yes"> </SPAN>For those interested in the equipment please see Bob Pastorello web page.<SPAN style="mso-spacerun: yes"> </SPAN>The version that I flew is the glow version using OS160 engine.<SPAN style="mso-spacerun: yes"> </SPAN>Final weight is 9 lb 14 oz.<SPAN style="mso-spacerun: yes"> </SPAN>I know that I could reduce the weight a little more by using lighter wheels and smaller receiver.<SPAN style="mso-spacerun: yes"> </SPAN>It is OK for me since this plane is my first 2 m class plane less than 10 pounds.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><o:p> </o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B style="mso-bidi-font-weight: normal">First Fly impressions:</B><SPAN style="mso-spacerun: yes"> </SPAN>Clearly the most constant speed plane that I ever flown.<SPAN style="mso-spacerun: yes"> </SPAN>I can fly closer to show a better presentation.<SPAN style="mso-spacerun: yes"> </SPAN>It is going to take some time for me to get along but definitively I like the change.<SPAN style="mso-spacerun: yes"> </SPAN>Please understand that this is my first wide body plane.<SPAN style="mso-spacerun: yes"> </SPAN>For those flying already wide body planes probably won’t be a big change.<SPAN style="mso-spacerun: yes"> </SPAN>The down lines are a pleasure to watch.<SPAN style="mso-spacerun: yes"> </SPAN>I felt as a pilot that I have more time to make corrections.<SPAN style="mso-spacerun: yes"> </SPAN>Slow and snaps rolls are fantastic. Landing is a pleasure.<SPAN style="mso-spacerun: yes">&n! bsp; </SPAN>Not sure yet about spins since I did it once only.<SPAN style="mso-spacerun: yes"> </SPAN>I really didn’t like the break.<SPAN style="mso-spacerun: yes"> </SPAN>I think I need a little more up elevator since I lost some travel amount after the elevator trimming.<SPAN style="mso-spacerun: yes"> </SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><o:p> </o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B style="mso-bidi-font-weight: normal">First Trimming Impressions:<SPAN style="mso-spacerun: yes"> </SPAN></B>As soon I took off I knew that I need down trim.<SPAN style="mso-spacerun: yes"> </SPAN>I got fixed and finish with 28 bits of down trim in my JR 10 X radio.<SPAN style="mso-spacerun: yes"> </SPAN>Also I finished with 4 bits of left trim.<SPAN style="mso-spacerun: yes"> </SPAN>Ailerons and elevators were set up for 10 degrees travel.<SPAN style="mso-spacerun: yes"> </SPAN>After the first landing, what a landing it was a 10 using the old rules, I checked the elevators and found that one half was a little more up than the other half.<SPAN style="mso-spacerun: yes"> </SPAN>Also, I found the same problem in the right aileron that was a little more up. When I say a little is almost difficult to see at naked eye.<SPAN style="mso-spacerun: yes"> </SPAN>Definitively the plane was tellin! g me that I need a better mechanic.<SPAN style="mso-spacerun: yes"> </SPAN>This was clearly mechanic error (me!!).<SPAN style="mso-spacerun: yes"> </SPAN>I checked the CG and the plane looks fine now.<SPAN style="mso-spacerun: yes"> </SPAN>If you ask me where it is the CG now “I will say I don’t know”.<SPAN style="mso-spacerun: yes"> </SPAN>I am one of those guys that check the CG in the air.<SPAN style="mso-spacerun: yes"> </SPAN>I put the battery behind the firewall so I knew that I was a little nose heavy.<SPAN style="mso-spacerun: yes"> </SPAN>The plane requires a little pressure when flying inverted.<SPAN style="mso-spacerun: yes"> </SPAN>Right now I need more time to finish CG adjustments.<SPAN style="mso-spacerun: yes"> </SPAN>My taste is a little tail heavy so I will start to move the battery but I want to correct the positive incidence first.<SPAN style="mso-spacerun: yes"> </SPAN>I will check the actual locatio! n for those that want to have the information.<SPAN style="mso-spa
ceru: yes"> </SPAN>The rudder was set to about 30 degrees.<SPAN style="mso-spacerun: yes"> </SPAN>I think is OK.<SPAN style="mso-spacerun: yes"> </SPAN>I did the master schedule one time.<SPAN style="mso-spacerun: yes"> </SPAN>I feel now that I am OK for travel.<SPAN style="mso-spacerun: yes"> </SPAN>Probably, I will need to get a little more up for the spin but I did it only once yesterday.<SPAN style="mso-spacerun: yes"> </SPAN>In the second fly, I did finish with 8 bits of down elevator.<SPAN style="mso-spacerun: yes"> </SPAN>I know that my plane was set up for 0.75 degrees positive incidence.<SPAN style="mso-spacerun: yes"> </SPAN>I also know that you can order the plane now using 0, 0.25, 0.50 and adjustable that you will need to install.<SPAN style="mso-spacerun: yes"> </SPAN>It is clear to me that 0.75 is too high and probably I will go 0.25 in my next Abbra to reduce the down elevator trim.<SPAN style="mso-spacerun: "> </SPAN>The positive incidence and the elevator trim causes that the plane requires rudder with up elevator mix to hold knife edge in both sides.<SPAN style="mso-spacerun: yes"> </SPAN>In this regard, it is clear the plane requires opposite aileron also.<SPAN style="mso-spacerun: yes"> </SPAN>This is not a surprise to me since I never had a pattern plane that didn’t require any mixing during knife edge.<SPAN style="mso-spacerun: yes"> </SPAN>I still tweaking with rudder mixing with elevator and rudder.<SPAN style="mso-spacerun: yes"> </SPAN>The final information will come in the future.<SPAN style="mso-spacerun: yes"> </SPAN>My next step in trimming the plane is to try to reduce the positive incidence to 0.25 degrees to minimize the mixing and the down elevator amounts.<SPAN style="mso-spacerun: yes"> </SPAN>Also, I will increase to 12 degrees the up elevator to improve the break on spins.<SPAN style="mso-spacerun: yes"> ! </SPAN>On lateral balance I don’t think that I have to adjust.<SPAN
yle="mso-spacerun: yes" st> </SPAN>The plane tracks very well in loops but I need to check a little more.</P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><o:p> </o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Tomorrow, I will have a judge calibration section.<SPAN style="mso-spacerun: yes"> </SPAN>The judges will tell me if my impression of fantastic landings, snaps and slow rolls are realistic. </P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><o:p> </o:p></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt">Vicente Bortone</P></DIV>
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