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Maj. Woody's Skymaster 1/5 F-86

Old 12-11-2018, 09:59 AM
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And this is why we love the Maj Woody builds! Amazing build Dom!

This is RCU gold!
Old 12-11-2018, 11:05 AM
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Thanks Rav you are too kind. I can only hope my Sabre turns out as well as yours. I saw the Swat video and loved it.
Old 12-15-2018, 03:24 AM
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Does anyone know if I am going to need up or down elevator trim / mix when I add flaps? If so how much and what direction?

Also, do the drop tanks change the CG at all? Just wondering if I could fly with or without them without having to worry about the CG. I will test this when I am balancing the model, but wanted to know in advance.
Thanks!
Old 12-15-2018, 06:14 PM
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Major, on mine, which is identical to yours, If the speed was in the 70 mph range (I have a GPS with voice speed) no trim needed for either flap setting. Also my slats were mixed with flaps so that when you had full flaps you also had the recommended slat extension. I did not fly with the fuel tanks installed yet but do not think they will affect to w&b much if any at all. One thing I noticed is that with full flap and gear out if you a bit hot, it is a real floater. I found that 48 to 50mph on touch down is perfect and the flare is uneventful. I'm assuming the Spektrum GPS is telling me mph rather than knots. Also I was flying with the CG at 395 mm.
Rod
Old 12-16-2018, 03:29 AM
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Awesome. Thanks for the feedback Rod!
Old 12-16-2018, 12:01 PM
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Originally Posted by MaJ. Woody
Does anyone know if I am going to need up or down elevator trim / mix when I add flaps? If so how much and what direction?

Also, do the drop tanks change the CG at all? Just wondering if I could fly with or without them without having to worry about the CG. I will test this when I am balancing the model, but wanted to know in advance.
Thanks!
Dom,

It all depends on where you set neutral for the elevator. I need to add up trim for flying but needed down trim for the flaps at half and full. Just be prepared with the flight mod switch set for trim with the different flap positions.
Old 12-24-2018, 11:50 PM
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Dom,
You are a true craftsman! Thanks for sharing and explaining every step with pictures.
Regarding the reinforcement of the retracts rails and using bolts with blind nuts, isn't it "too strong"? Wood bolts can be used as fuses in case of hard landing and they will be ripped off instead of causing internal structure damage.
Avi
Old 12-31-2018, 03:17 AM
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This is how the door linkage comes from the factory. It worked well out of the box but when I set the toe on the wheels, it changed the geometry and the ball link pivoting kept my door from moving over where I wanted it when closing.
Old 12-31-2018, 03:23 AM
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To stabilize things, I machined a standoff with a recess to capture the ball that effectively stopped the link from pivoting at one end. The door closes as it should now. You may notice that the door attachment tab looks different between the stock setup and the modified. That is because the cheap plastic tabs broke off of both doors and I had to replace them.
Old 12-31-2018, 03:24 AM
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Tonight I will be putting the finishing touches on the right wing panel and both wings are complete at this point. Time to move on to the tail!
Old 12-31-2018, 03:59 AM
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great job Dom. I made a "ramp" that was glued to to the strut with a piece of brace tubing on the threads of the rod. as the gear comes up it allows the door to be pushed into place.

Call me when you start the tail. I have pics of my set up.

Joe
Old 12-31-2018, 05:18 AM
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Thanks Joe!
Old 01-01-2019, 07:52 AM
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amazing work Dom! Thanks so much for doing this. Looking forward to watching the progression.

-S
Old 01-01-2019, 03:36 PM
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Originally Posted by smaze17
amazing work Dom! Thanks so much for doing this. Looking forward to watching the progression.

-S
Thank you for reading the thread and providing the motivation!
Old 01-01-2019, 03:37 PM
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The right wing panel is now complete.

Last edited by MaJ. Woody; 01-01-2019 at 03:39 PM.
Old 01-01-2019, 03:41 PM
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As stated earlier, I rubbed out the wings when I finished their construction. I used Novis #2 Polish.
Old 01-01-2019, 03:45 PM
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Both wings are now tucked away and I will start on the tail this weekend.
Old 01-01-2019, 04:09 PM
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Originally Posted by two dogs
Just watching this again. What a great job you did flying the Sabre from that short strip. Excellent!
Old 01-01-2019, 08:37 PM
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Originally Posted by MaJ. Woody
Just watching this again. What a great job you did flying the Sabre from that short strip. Excellent!
Yes, nice approach and landing. The Sabre Dance looks light, don't see any leading edge slats being used at all. May I venture to say the loud whistle is an airframe noice, probably because there is no full bypass installed (or am I wrong?)

Cheers,

JanR
Old 01-03-2019, 09:26 AM
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Moving on to the tail, I immediately encountered a problem with the installed hinges. Just removing the elevator from the stab (the hinges come pre glued into the control surfaces only) caused on hinge to snap in half. Putting a little pulling force caused anothed failure at the pivot pin. I have no choice but to grind out all of the supplied hinge points and replace them with high quality Robart hinges. Dont be fooled or trust these imitations.
Old 01-03-2019, 01:12 PM
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Very true Dom, the same goes for the airline couplers.

JanR
Old 01-03-2019, 01:28 PM
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ACK!!!

And on a “Jesus” surface no less!

Hmm, I wouldn’t trust any hinge on the airplane after that.
Old 01-03-2019, 03:34 PM
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Dom, I think I read on here where you can take a piece of Brass tube with a slightly larger ID than the OD of the hinge, heat it up and press in to remove old hing points.
Old 01-03-2019, 03:59 PM
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Wow that is an interesting idea. Thanks Rich!
Old 01-03-2019, 05:08 PM
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Thanks ....love the SKYmaster F 86, flys great......."Sabre Dance" is neat paint scheme....

Full bypass ...whistle at 50 percent throttle...whistle stops above 60% throttle JC P180

10mm slats on take off
20mm slats landing

TwoDogs

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