Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

My first Dust is done

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Old 05-03-2011, 04:49 AM
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BlackB12
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Default My first Dust is done

Thanks for all who've guided me in the building and engine/CG/etc questions I had along the way. It came out great. Just need to bolt up the engine and program the radio. I hope to fly it this weekend. Green is apple green ultracote trimmed with neon red (looks pink) monokote with black monokote underneath it.

Mike
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Old 05-03-2011, 05:11 AM
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freakingfast
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Default RE: My first Dust is done

Cool, I mean that's HOT

What engine size is that?
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Old 05-03-2011, 08:12 AM
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Default RE: My first Dust is done

Nice
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Old 05-03-2011, 11:57 AM
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Default RE: My first Dust is done

Beautiful job..!

I gotta say though....the linkage geometry look like you're trying for a 3D model.
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Old 05-04-2011, 03:50 AM
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BlackB12
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Default RE: My first Dust is done

Thanks guys.
Freakinfast,
The engine is an older Sport Jett 46 I picked up used here on RCU.

Combatpigg,
The final linkage geometry isn't yet determined. As it sits it's a 1:1 ratio, but will probably end up being closer to 1:1.5 or so to maximize servo resolution. It'd be nice if I had some smaller JR arms so for now I'll just be using the inner holes on the servo arm. The servos are JR8411 metal gears. I love these servos but they seem to chew through gearsets pretty quickly and develop slop. I just installed a new gearset so I should be good for a while.

Mike
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Old 05-04-2011, 07:04 AM
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Default RE: My first Dust is done

There are those who will not use MG servos on these types of aircraft for that very issue. But as you said, with new gears you'll be fine for a while.
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Old 05-04-2011, 09:01 AM
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BlackB12
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ORIGINAL: MJD

There are those who will not use MG servos on these types of aircraft for that very issue. But as you said, with new gears you'll be fine for a while.
Now you got me thinking about it. I have some 90 inch-oz. digital carbonite geared servos. Would that be adequate? If so, I can always use these 8411's on another plane.

Mike
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Old 05-04-2011, 11:05 AM
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Default RE: My first Dust is done

I fly Jett .50 and West .50 powered Demons on HS-225's. No problems "yet". AFAIK 90 oz-in digitals are plenty, but I've never owned a DD.
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Old 05-04-2011, 02:27 PM
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Default RE: My first Dust is done

I also use HS225BB servos on my Screamin' Demons, with no issues.
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