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MD1 project

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MD1 project

Postby Bigdave » Tue Dec 03, 2013 3:39 pm

While waiting for some custom electronics for my UNI 2.5 cylinder to be ready I decided to tackle another micro cylinder.
My chief test pilot PITA Greg had asked me if I could build him a small cylinder for a new project he had started.
I told him I needed a change and a good challenge sounded like a plan. :mrgreen:

I had toyed with a micro cylinder years ago but went too small with the design and it was very hard to build.
He told me it had to be less than 1.8" so I settled on trying for 1.5".
Not getting too deep into the story I came up with what I call the MD1 for Micro Dynamic 1.
It is a three channel cylinder with rudder planes and motor.
Although a separate ballast cylinder could be added as in my case a 5 CH RX is installed.
It will be mainly used for converting small plastic sub kits to RC.
That is the plan anyway.
I have the cylinder working great on the bench and now I will do an install for testing.
I may use this small Typhoon kit I forgot I had.
A simple gearbox will allow me to run both props.
I will also finish one up for Mr Pita to Beta test for me.
If he can't break it I will be home free. :roll:
If it goes into production it will be supplied ARTR needing only RX and ESC.
More info to come.
Here are a few photos of the prototype under construction. BD.


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David Welch
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Re: MD1 project

Postby JWLaRue » Tue Dec 03, 2013 4:35 pm

...for a Typhoon? Heck with that......operating torpedoes! :mrgreen:

-Jeff
Rohr 1.....Los!
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Re: MD1 project

Postby Bigdave » Tue Dec 03, 2013 4:47 pm

What a cool idea. :shock:
I like the way you think Sir! 8)
David Welch
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Re: MD1 project

Postby JWLaRue » Tue Dec 03, 2013 4:55 pm

I think these would be a perfect size for the 1/9th scale torpedoes on my Seehund.... :twisted:

-Jeff
Rohr 1.....Los!
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Re: MD1 project

Postby Rick Teskey » Wed Dec 11, 2013 8:25 am

Hi Dave
Where are you at with a wtc for the gato?
Bruce has money burning a hole in his pocket!!!
Rick
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Re: MD1 project

Postby Greg W » Wed Dec 11, 2013 11:10 pm

is the hole larger or smaller with the exchange rate?
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Re: MD1 project

Postby Rick Teskey » Thu Dec 12, 2013 7:04 am

It varies daily.
Sometimees it is less than a dollar sometimes it is more and its a friggin coin too boot so is the $2.
All the new bills are a polymer compound so all except for the$1 and $2 coin are "plastic" money
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Re: MD1 project

Postby Bigdave » Sun Dec 15, 2013 4:06 pm

Rick Teskey wrote:Hi Dave
Where are you at with a wtc for the gato?
Bruce has money burning a hole in his pocket!!!
Rick

Hi Rick
I am waiting for Pattie to finish my ballast system electronics modification.
It's tough trying to get these retired engineers working again. :mrgreen:
I have been dragging my feet as well.
To many cool projects I guess.
I hope to get back to it after the first of the year. BD.
David Welch
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Re: MD1 project

Postby redboat219 » Tue Apr 22, 2014 1:16 pm

Hey Big D,
What kind of seals are you using for the prop shaft and control rods?
"Make it simple, make it strong-and make it work!" - Mikhail Mil
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Re: MD1 project

Postby Bigdave » Mon Apr 28, 2014 11:04 pm

Shaft seal is my own design.
I uses a cup seal.
The linkage seals are O rings imbedded into the end cap.
No room for separate seal assemblies.
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