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HelicopterScale Model RC Helicopters Docs  Roban Super Scale Jayhawk Re-Build
06-30-2017 11:33 PM  87 days agoPost 1
cobieg

rrApprentice

Florida

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For those of us who saw the Super Scale Jayhawk go down at the Panama City event, I have been tasked with repairing the fuse. I was going to post up earlier but with RR going off the air... well you know, so I'll do it now.

The tail gears stripped out and started to piro. He managed to keep it flat and hit Throttle hold at about 8ft., it dropped like a brick. Most of the damage was to the landing gear. The rear landing gear mount shattered and the front gear mounts fell apart as well.

The battery box was sheared off and smashed the cockpit pretty good. The nose sheared off the windshield side posts from all of the counter weight.

And the tail got bruised and broken on both sides.

All and all, it is not too bad. I have done some reinforcements
to help carry the load. Will post more later.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-01-2017 06:51 PM  86 days agoPost 2
cobieg

rrApprentice

Florida

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So, let me bring it up to date. The first thing is to get it back on its feet. Glass the broken fuse and Re-build the rear gear mount to make it stronger. Added some bracing to help transfer the load in a not so perfect landing.

The front gear mounts broke apart. The mounting screw for the strut goes through a "Tee" nut, through the strut, then exits out the other side through a hole in the wood piece that broke out (note the orientation of the "Tee" nut). I pulled the boxes out and put a "Tee" nut on the opposite side. Glued the boxes back in. Now they are very strong. Will be changing to stiffer springs in the struts as well.

The battery box has been repaired, reinforced and bonded back in place. The windshield posts have been pulled back in place and some carbon fiber rod layed in around the door frame and bonded in with Gorilla glue. A little more glass work on the front and it will be ready to prep for paint.

The tail has been glassed on the inside where it impacted the ground and broke. I hope to have it done by the end of the month so he can get in some flights before Dalton.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-02-2017 04:36 PM  85 days agoPost 3
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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Looking great, thanks for posting. so many fuselages get tossed because the owners think its beyond repair when in reality, it usually not as bad as it looks at first. You are showing that with a little time and patience, even significant damage can be repaired and back in the air. please keep the pics coming

drive a rotary, fly a rotorcraft

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07-03-2017 05:53 PM  84 days agoPost 4
cobieg

rrApprentice

Florida

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Thanks Emile, It has been a slow process to say the least but there is light at the end of the tunnel. I have been kidding the owner that it will be so strong that he will be able to do rolling auto rotation landings. This has also caused me to look for weak spots on my Funkey MD 500E that I am building now and get them corrected before I get tooo far along.
I am getting ready to modify the horizontal stabilizer so it can be raised during ff. The owner had it secured in the down position and we think that it is messing with the fbl by trying to nose it over and the fbl is trying to push it back up, causing the porpoise effect. I think it will be tied in with the landing light. Landing light off, stabilizer up, come in to land, stabilizer down.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-04-2017 07:29 PM  83 days agoPost 5
cobieg

rrApprentice

Florida

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Happy 4th of July! I got a little more done today. The glue that I used around the door frames to secure the carbon rods has cured. I ground it down and glassed over. Will trim it out tomorrow and brush in some gray paint to cover. It is very strong in this area now. You can see the carbon rod in the pic.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-04-2017 08:14 PM  83 days agoPost 6
CoachE

rrApprentice

Cincinnati, ohio -usa

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Looks good hope to see it at Dalton!!

Team JR / Get !T - Got !T - Perfect !T

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07-05-2017 12:57 AM  83 days agoPost 7
JurassicJet

rrNovice

WI

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I have to ask....Are you planning a complete repaint on this bird? I just damaged my bird a little (Roban AS350) and I'm trying to figure out how to repair it. I don't mean to hijack your thread but just curious on the type of paint you will be using and your process.

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07-05-2017 02:55 AM  83 days agoPost 8
cobieg

rrApprentice

Florida

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Yes, it will be a total repaint so the colors will match. It is an automotive base coat clear coat. Pick the loose gel coat out and fill with spot glazing putty. All the broken fiberglass was ca'd from the outside and a light cloth layed on the inside.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-05-2017 03:08 AM  83 days agoPost 9
JurassicJet

rrNovice

WI

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Ah, I see. So a 2k system then (I think that is what its called). Some serious money involved in just the repaint then.

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07-05-2017 03:18 PM  82 days agoPost 10
cobieg

rrApprentice

Florida

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Not too bad for the paint cost. 2 pints of paint, computer matched, mixed, and reduced ( I may reduce it a little more for my small hvlp gun) $90.88. 1qt. Clear w/activator $29.21. The good thing with this system is the clear can be compounded down and polished up to remove any imperfections, dust particles etc.

@ CoachE, thanks Evan. I saw the video of you flying yours. Keep up the good flying, see ya in Dalton

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-05-2017 04:57 PM  82 days agoPost 11
coptercptn

rrElite Veteran

Mesa AZ. USA

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Just a little input here... most automotive paint stores these days will mix up 2k systems into "rattle cans" and these even have variable nozzles. The clearcoat comes in a can you activate by pushing a button ( adds the catalyst)... so you don't need all the expensive guns/filters/compressors and you get amazing results!!
I just did my wife's golf cart and it came out great... and they can color match also...

Home of the "Sea Cobra".....

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07-05-2017 05:26 PM  82 days agoPost 12
doorman

rrProfessor

Sherwood, Arkansas

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Looking Good!!

Your getting there Ron!! Keep it up!!
Thats some real good info on the paint Jim... you know that I am a rattle can "arteeeeest!!
See you guys in Dalton..

Stan

AMA 2918-Team JR, Spin Blades, East Coast Scale Helicopter,Castle Creations

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07-05-2017 10:44 PM  82 days agoPost 13
cobieg

rrApprentice

Florida

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Great info on the rattle can. I am curios of the price difference.
Time to start filling and sanding, and sanding, and sanding....

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-06-2017 04:14 PM  81 days agoPost 14
coptercptn

rrElite Veteran

Mesa AZ. USA

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My paint shop charges me 10$ Per can plus paint cost (I usually buy a pint )
A pint of paint will fill 4+ cans of color...
The clearcoat costs 18$ and has the catalyst premixed. One can will cover a 1/4 panel or gender on a car...so more than you would ever need. But, once you activate the clear ( push the button to add the catalyst) you only have a 72 hr pot life... all in all though, it works extremely well!!! Also, the clearcoat is available in different finishes . Gloss, satin, flat. And can be sanded, polished to get out imperfections
Here's pics of the golf cart job;

Home of the "Sea Cobra".....

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07-07-2017 06:44 PM  80 days agoPost 15
cobieg

rrApprentice

Florida

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That looks good, I'll keep that in mind for another time.

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-12-2017 01:46 AM  76 days agoPost 16
cobieg

rrApprentice

Florida

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Started working on the horizontal stab. I needed to make some linkage. I found that some old 450 flybar head parts should work.

A little fabrication and I came up with this system that replicates a hydraulic cylinder rod and clevis. There are pivot bearings in the clevis as well.

I am using this push rod from an old airplane.

Now to make a servo mount.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-13-2017 12:27 AM  75 days agoPost 17
cobieg

rrApprentice

Florida

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Ok, I got a servo mounted and used an old flap speed controller to slow it down. It is set up so that when the landing light is on the stab. is down. Turn it off and it moves up. It is on a 3 position switch here but I have it set up on 2 position as well.

Watch at YouTube

Time to start prepping for paint.

Ron

I didn't crash. I just ran out of airspeed, altitude, and ideas all at the same time!

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07-13-2017 12:52 AM  75 days agoPost 18
ssmith512

rrKey Veteran

Indianapolis, IN USA

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That's cool! Nice job!

Steve

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07-17-2017 06:50 PM  70 days agoPost 19
old nitroman

rrVeteran

Naples florida

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neat

E5s and E7se,and a 766, Roban bell 222 800 superscale,450 bell 4 bladed head,gobby 380and 420 ,180cfx

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07-18-2017 02:59 AM  70 days agoPost 20
TailKiller

rrApprentice

Panama City, FL

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Very cool Ron. Looking good.

,Dennis
http://pcrcheliclub.com/
700 Astar Super Scale T-600 Bell 206 Trex 600 Naza H DX8

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