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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › A Bone-headed move
07-04-2014 05:36 PM  6 years ago
gmcullan

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Southbridge, MA

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Hi Barry,

I've used Goldenrod for about a zillion years. (I know, I don't look that old!) Success is insured provided both ends of the outer sheath are well secured and additional supports along the control run are positioned as appropriate.

In this particular installation, the outer sheath is "glassed" to the tail boom. The threaded sections for the ball links extend into the center rod such that there is no unsupported/reinforced rod that extends beyond the outer sheath. My goal was to ensure that the play in this control system was equal or less than a standard control rod setup.
Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450
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07-04-2014 08:08 PM  6 years ago
Mojave

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Palos Verdes, Ca. USA

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Yeah, I saw that you had glassed the control rod outer sheath. I'm not criticizing your set up one bit, I agree with you 100% in this application. All I'm saying is that when you have a very large diameter tail rotor (800+ size scalers), the pitch slider arm is typically longer (which runs in a larger arc), which requires the last support of the goldenrod to be placed farther away from the tail box, to allow it to move back and forth freely through the arc of travel. That's when the carbon rod comes in handy. It gives the center rod so much more support. This mod completely fixed the tail wag problem on my 800 size huey. All she needed was a little more rigidity in the control rod.
Barry
All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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07-04-2014 08:15 PM  6 years ago
gmcullan

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Southbridge, MA

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Oh heck, my little 450 based MD500-E is just a "baby" compared with your 800 sized Huey. I agree, control run integrity is paramount, regardless of the size of the heli. Materials and techniques must be appropriate for the size of the heli.Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450
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07-04-2014 11:38 PM  6 years ago
coptercptn

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Mesa AZ. USA

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on my bigger birds I actually run the golden rod sheath inside a piece of brass tubing, and offset the ends. gives rock solid support and requires less reinforcement.. Yes it adds a bit of weight.. but I feel the added safety, and ease of set-up, makes it worth it.Home of the "Sea Cobra".....
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07-05-2014 03:32 AM  6 years ago
Mojave

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Palos Verdes, Ca. USA

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I like all scale machines, regardless of size. You've done a great job on this one.

Jim, great idea using the brass tube. The added weight is probably negligible.
Barry
All helis and planes have an expiration date stamped on them...you only find it after you crash!!
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07-14-2014 02:35 PM  6 years ago
gmcullan

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Southbridge, MA

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Here is what my finished MD500E looks like. The windows are installed. I currently have 25 flights on this configuration. I was concerned about motor/ESC/LiPo overheating with the fuselage fairly closed up. But with my gentle flying style and keeping flights to 4 minutes, everything stays at a very reasonable temperature.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450
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07-14-2014 08:11 PM  6 years ago
rcheli808

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Mililani,Hi-USA

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Looks good Gerry...well done!
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HomeScale✈️AircraftScale HeliScale Helicopter Main Discussion › A Bone-headed move
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