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Yellow P-47 gear doors

Old 11-07-2016, 04:32 AM
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FalconWings
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Default Yellow P-47 gear doors

Hi,

Was wondering if someone could tell me what pneumatic cylinders available today work for the inner gear doors?
Im refurbishing P-47 that had a trip mechanism, but it doesn't work very well, plus I am adding air cylinders for the tailwheel doors so might as well.

Thanks,
David
Old 11-07-2016, 12:50 PM
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tailskid
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I would love to know this also......have one NIB and it just might get to it early next year.....
Old 11-07-2016, 01:14 PM
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BobH
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I have gear doors cylinders from Bob Violet. They go through the top of the wing because they are too long. But that part of the wing is under the fuse so you don't see them. They work well.
Old 11-07-2016, 01:18 PM
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It depends on how much travel you need. There are several strokes available:

http://www.dreamworksrc.com/catalog/Cylinders
Old 11-07-2016, 02:45 PM
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My last one had Ultra Precision. Can't remember the exact length, but like above, they protruded through the top of the wing where they were mounted on 1/8 ply. Worked fine for many years, till the mid air...but that's a whole 'nother story, as they say.
Mike O.
Old 11-08-2016, 09:45 AM
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Originally Posted by BobH
I have gear doors cylinders from Bob Violet. They go through the top of the wing because they are too long. But that part of the wing is under the fuse so you don't see them. They work well.
Bob I would love to use BVM actuators, do you know the length and stroke you used?
Old 11-08-2016, 09:55 AM
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tailskid
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How much 'throw' is needed to open/close those doors?
Old 11-08-2016, 11:13 AM
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Greg Wright
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Dave,

I built a couple of yellow A/C Jugs in my day. I'm thinking it was either 1 1/2 or 2" stroke cylinders.
Old 11-08-2016, 11:34 AM
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That's the thing, to determine the throw you have to open op the holes for the cylinder pass-through. Depending on the cylinder you get the position of the hole shifts. If I can get an idea of which cylinder to use it would give me a ballpark idea for the location of the cylinder, so I can open up the hole.
Old 11-08-2016, 04:16 PM
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Greg Wright
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Dave,

They use to use the cylinders that Ultra Precision sold. It's the same brass ones that Dream works has and also Darryl from Sierra precision sells also.

We use to just oblong the hole for where the cylinder goes thru the wing so it had inning space to move.
Old 11-10-2016, 12:29 PM
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I have a set new in the package if your looking.
[email protected]
Old 11-11-2016, 10:57 AM
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[QUOTE=kork;12276084]I have a set new in the package if your looking.
[email protected][/QUOTE

email sent, thanks!

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