Compressor.

[Guest]

Does anyone know where to get a micro compressor (max: L:100mm W: 70mm H:60mm )? I want to use it for filling my air tank. I plan to put it into the sub, and add some sensors to control it, so that it will fill the air tank for my ballst system, when the sub is surfaced.

If anyone knows of a shop, that sells micro compressors that might be good for this, please post there web pages here.

[mylo]

Andreas,

I would be very

Andreas,

I would be very interested in something like that too for my 1:25 type VIIc/41, except I have a little more room to work with than the dimensions you specified. Not to mention, I would like to see your plans/schematic for setting it up.

Regards,

Mylo

[aeroengineer1]

What sort of pressures are

What sort of pressures are you looking for? Just doing a quick search I found this, http://www.slimesealant.com/product.php?product=40001 , but I am not too sure that is what you are looking for. Though I do know that you can get it for a great price. It says that it is rated for 300psi, though I do not know its flow rates.

Adam

[mylo]

That looks interesting....and possibly usable.

300psi

That looks interesting....and possibly usable.

300psi .....I have my doubts.

Mylo

[Guest]

Andreas,

I would be very

[quote]Andreas,

I would be very interested in something like that too for my 1]

I just have to finish them, then I will post them.

[Guest]

Here is the plan.




http://upload8.postimage.org/925240/Unavngivet.jpg

Here is the plan.

[Guest]

Go to this forum-

http://www.pressluftjunkies.de

They specialise

Go to this forum-

http://www.pressluftjunkies.de

They specialise in compressed air submarines. Register with the forum (free) and ask about compressors there, the guys building the big compressed air boats know of some sources for off the shelf piston compressors that will meet your requirements. I believe they are used in Audi cars for tyre inflation, but are much better quality than most tyre inflator pumps/compressors.

The other alternative is to convert an old model i.c. engine with a one way valve in place of the glow plug, but you would need workshop facilites to do this, and I appreciate not everyone has this luxury.

Andy

[Guest]

Thanks, but I dont speak German.

Well thanks for the help Andy, but I dont speak German. If you talk to them, and find something interesting, please post it here too, also if it's in German, then I'l just let a good friend, translate it for me.

Andreas

[Guest]

Doesn't matter if you don't

Doesn't matter if you don't speak German, I don't speak it either and people post over there in English quite often You will find the people there are helpful.

Andy

[cstranc]

Andreas thank you for the

Andreas thank you for the excellent diagram. So can you point out where to get the:
* Air Feed Valve.
* Pressure switches.
* Pressure reducers.

Are they all stock from Clippard ( http://www.clippard.com/ ) or do you have a better source in mind...

Chris

[Guest]

That diagram looks like it

That diagram looks like it came from Norberts book.

Personally I wouldn't use twin tanks with compressed air, it could give you a lot of headaches with trim, as it's difficult to control in any meaningful way.

Use a single centrally mounted tank, and have a seperate trim system based around piston tanks or a moveable weight i.e. a battery. These can be controlled proportionally, and thus allow very precise trimming.

Andy

[tmsmalley]

We need to be careful

We need to be careful about posting copyrighted material on the forum, guys. If it is from Norbert's - Model Submarine Technology, it is copyrighted by Traplet and "May not be reproduced or used without written permission."

[don prince]

Hi Tim,

I have the book

Hi Tim,

I have the book "Model Submarine Technology" published in 1996 and Andreas' drawing is a simplified version of Norbert's drawing on page 60. Norbert's drawing may be copyrighted, but is the principle copyrighted as well?

Regards,
Don_

[tmsmalley]

I don't think so -

I don't think so - just the graphic would be. If it isn't a scanned image from the book, or a nearly exact copy it should be ok. It's always a good idea to attribute the source as well to give credit where credit is due.

[mylo]

Andy,

I agree with your

Andy,

I agree with your single, centrally located tank combined with piston trim tanks comment completely. When dealing with a compressed air ballast system, I can see where having two tanks would be real difficult to control.

Mylo