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Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Old 05-05-2013, 10:42 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

From CARF to scratch :-)



Old 05-05-2013, 11:50 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Hannes,

Is there any chance that you will offer the corrected cowls for sale? Even if you do not sand and paint them I would like to buy one.

Thanks,

Mike
Old 05-06-2013, 12:48 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Wow! Very nice
Your Gee Bee will be the fairest in the land...
Old 05-11-2013, 09:12 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

That looks like a Hannes pilot๐Ÿ˜„
Old 05-11-2013, 09:15 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

If anyone is online with the incidence numbers for the wing dihedral correct me if I'm wrong before I drill theses cable anchors in the next 20 minutes ... 5.5 degrees ???
Thanks for the help from anyone ๐Ÿ˜„
Old 05-11-2013, 09:42 AM
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ORIGINAL: RichardGee

Bumblebee... WELCOME to the fascinating world of piloting a scale Gee Bee R2

It is difficult to give you exact advice designed to cure your issue.... FIRST, are you positive that the following are PERFECT??

Dihedral - minimum 4.5 degrees each wing and EQUAL
CG - 17-18% of chord? This equates to 73mm - 75mm back from the leading edge
Minimal rudder throws - the rudder is VERY effective on this plane
PERFECT rudder linkage with NO SLOP
Digital servos w/minimum 150 in. oz. torque
Aircraft is trimmed for hands off, level and straight flight at 3/4 throttle
Flying wires are ''guitar string'' tight?

Your engine, prop and weight are perfect, but the extra HP will indeed add some P-factor. Compared to a DA150 the affects will be minimal.

Once ALL of the above are confirmed, you MUST mix some right rudder with your throttle. The total amount of rudder throw from neutral is about 2mm. The rudder should NOT begin mixing until you reach approx. 50% POWER... at that point, the rudder should mix in a linear fashion until at full power you have 2mm right rudder deflection.

Assuming you get all of this correct, you will likely find that flying this airplane IS a continuous compromise. As Delmar Benjamin confirmed, it is UNSTABLE in PITCH and in YAW. Correcting this required an expert pilot sitting IN the cockpit sensing every deviation... we on the ground do not have the ability to sense subtle changes.
A GYRO would be a great addition, but simply adding a gyro will not fix the issues unless you have the gyro perfectly tuned to offset the Gee Bee's tendencies... this will take trial and error... and the by the time you have it dialed in, you will be an EXPERT Gee Bee pilot and may no longer need a gyro
Ok while I was waiting for a possible reply I looked back through the pages to find the info and as usual Richard is the man๐Ÿ˜„. Thanks for posting this Richard now on to the drilling
Old 05-11-2013, 09:43 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

BTY , I can't believe a year has passed since I worked on this beast.... I'm feeling the shame guys
Old 05-11-2013, 12:22 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Visit my buddy Hannes in Germany :-)












Old 05-11-2013, 04:42 PM
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Looks like fun to me
Old 05-11-2013, 11:45 PM
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We had a great time!!
Old 05-12-2013, 06:54 AM
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I got the holes drilled yesterday for the wires to attach inside the fuse...here is a question for you GeeBee veterans, with the wires stretched so tightly, what is the best or easiest procedure for assembling the wings at the field? I have had planes in the past with functional flying wires and they always required a certain procedure for assembly or it would be a frustrating event every time the plane went to the field. Richard and Hannes, you two come to mind on knowing the easiest method so if you guys could share your technique I would really like to hear it.
Thanks Fellas
Jimmy
Old 05-12-2013, 06:58 AM
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cant post pics since rcu is on a snafu....[:@]
Old 05-13-2013, 07:52 AM
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Ok I got it.... Loosen bottom bolts first , tighten last๐Ÿ˜„
Old 05-13-2013, 12:01 PM
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I'm at 4 3/4 degrees dihedral incidence and guitar string tight
Old 05-13-2013, 12:03 PM
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Too bad CARF didn't include some steel strap to add across the bolts at the bottom
Old 05-14-2013, 01:23 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Ok all the wing wires are installed and tuned to a G chord
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Old 05-14-2013, 01:26 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

I put the wing dihedral incidence at 4 3/4 degrees equally
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Old 05-14-2013, 01:41 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Hannes I have been looking closely at your wheel pants and plan on adopting your mounting method...cutting the aft part of the wheel fairing lose looks like a great idea but how did you mount the fairings to the struts? I recognize the main screws that attach to the struts but the additional attachments are what I would really like to see...it you wouldn't mind sharing that information I would be very grateful for it...thanks
Jimmy
Old 05-15-2013, 06:19 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Got the throttle and choke set and engine dome near completion with only to cut ignition plug exits and fuel proof the engine mount
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Old 05-15-2013, 06:22 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Hannes, what I thought were mounting screws on your wheel pants are actually the axles exiting through the side of the pants
another day of GeeBee construction and looking forward to tomorrow
Old 05-17-2013, 04:59 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Rudder tray and fuel tank tray are both in
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Old 05-22-2013, 07:44 AM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Last test run before the maiden - CLEAR!!!

http://www.youtube.com/watch?v=5BYTkIDzQr0
Old 05-23-2013, 06:01 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Beautiful aircraft Hannes, the engine sounds great. Enjoy the maiden and I'm sure we're all looking forward to the video.

lumpy649
Old 05-23-2013, 11:03 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

Hello Hannes,

good luck!

Your maiden is my personal model aircraft highlight 2013!

Will press my 2 thumbs!

And yes, don´t forget your cameraman.

Wolfgang
Old 05-24-2013, 12:39 PM
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Default RE: Composite-Arf 33% Gee Bee R2 - First Flight - Pics - Videos - L@@K

The new custom wing bags are done, hope you like it!












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