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Old Sep 10, 2003, 09:17 AM
Registered User
Sao jose dos Campos - Brazil
Joined Sep 2003
7 Posts
Idea
1/200 Scale U-boat

Hi There!!!

I'm planning to "convert" one 1/200(35cm long & 3cm wide on the larger section...) scale U-boat from Nichimo on a R/C Sub.
I've found the micro R/C receiver on the website:www.mikroantriebe.de(receivers with 4 & 5 channels with 21x12x10mm(approx.) but I'll try to build a micro ballast system for it. I'm trying to find plans for a micro pneumatic cilinder...
Can anyone help me?

Thanks

Daniel
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Old Sep 10, 2003, 12:37 PM
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Umi_Ryuzuki's Avatar
PDX, OR
Joined Dec 2002
9,834 Posts
Look for Clippard Air Components.
They specialize in micro-air fittings, valves, and cylinders.
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Old Sep 12, 2003, 11:38 AM
36 Russky jets
daisycutter's Avatar
malaysia
Joined Nov 2002
258 Posts
umm, how about small hypodermic srynges? you could try modifying some or you could make your own system from brass tubing and a bit of rubber
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Old Sep 15, 2003, 09:08 AM
Registered User
Sao jose dos Campos - Brazil
Joined Sep 2003
7 Posts
I'm gathering ideas on wich one will be the safest method to build, since the size will be very reduced.
A friend from mikroantriebe gave me other idea, use a Lego pneumatic cilinder. I've found it but unfortunatelly it's too big...
I'll take some photos of the unbuilted sub ASAP.
Daniel
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Old Sep 19, 2003, 12:05 PM
Registered User
Sao jose dos Campos - Brazil
Joined Sep 2003
7 Posts
Hi There,

here goes a pic of the ballast tank ill try to build.
This is the first time I try to attached a pic... if it doens't work, please forgive me.

Take care you all!

Daniel
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Old Oct 05, 2003, 08:05 PM
Registered Useless
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United States, TN, Knoxville
Joined Feb 2003
417 Posts
Cleverest thing in The SubCommittee Report was a pump ballast tank that had the pump FILLING the sealed tank with water to go negative. The tank emptied when a relief valve was opened, the trapped air under pressure blew the water back out! It would fit a small boat better than a gas system, and it is a fail-safe design.
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Old Oct 06, 2003, 11:11 AM
Registered User
Sao jose dos Campos - Brazil
Joined Sep 2003
7 Posts
I'll check the Subcommittee for it! Is it a open report or members only?
Thanks a lot for the help!

Daniel
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Old Oct 24, 2003, 09:06 PM
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United States, TN, Knoxville
Joined Feb 2003
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The article was in the "SubCommittee Report" magazine, for subscribers. Don't know if an article was posted on the website.
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Old Nov 10, 2003, 10:31 AM
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United States, TN, Knoxville
Joined Feb 2003
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Check out the review of the soon-to-be-released 1/72 Type 7c in another thread here. May be better for conversion!
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