Periscopes - Lets get them working!!!

[himszy]

I get it at 1000mm

I get it at 1000mm x 50mm OD x 44mm ID for 5.95.

Michael

[paul von braun]

Where from?

Where from?

[himszy]

Paul,

Did you manage to order

Paul,

Did you manage to order those tubes?

Michael

[bill marks]

Here is the periscope system

Here is the periscope system I am experimenting with. It is hydraulic.
As a diabetic, I have painfull access to small syringes. I found they work as perfect little hydraulic cylinders using water as the fluid and a little glo-fuel gear pump as the hydraulic pump.

The whole system can be mounted inside of the WTC with the pump taking a suction "from the sea" and discharging to the syringe (less needle). When the scope is fuly extended, the pump just dead heads - no limit switches. The scope is lowered by reversing the pump and a very light spring that was stretched when the scope extended.

Bill

[boss subfixer]

Bill,
Thats a neat idea. I

Bill,
Thats a neat idea. I was thinking awhile back about functional scopes for my fleet boat, when I get that far, and was curious how water would work. Lets face it the boat would have an endless supply and you would'nt have to worry about someone having a fit about putting oil in the water!

[warpatroller]

This message is for Bill

This message is for Bill Marks.

Bill,

I find your periscope actuation method interesting.. Have you actually tried this method out yet? Or is it simply just an idea you had.

Steve

PS. I worked with a diabetic for a year, and i remember watching him use his little syringes.

[warpatroller]

I just saw in the

I just saw in the General forum that your in the hospital.. I was unaware of that when I made the last post. I do wish you a very speedy recovery Bill!

Steve

[anonymous]

Hi Bill,

I have tried your

Hi Bill,

I have tried your method and had it working at the Merstham show, here in the UK. It works very nicely. Hydraulics is much more rugged than electrical connections etc.

I used a 10ml syringe driven by a servo inside the WTC. The scope rests on a 4mm diameter floating PTFE piston in a brass tube.

I intend to write an article for our AMS magazine in the UK and I will give you all due credit for your idea.

Thanks and I'm so pleased to hear that you are recovering fast!

David Forrest

[shadowpeo]

Hi Bill,

I have tried your

Hi Bill,

I have tried your method and had it working at the Merstham show, here in the UK. It works very nicely. Hydraulics is much more rugged than electrical connections etc.

I used a 10ml syringe driven by a servo inside the WTC. The scope rests on a 4mm diameter floating PTFE piston in a brass tube.

I intend to write an article for our AMS magazine in the UK and I will give you all due credit for your idea.

Thanks and I'm so pleased to hear that you are recovering fast!

David Forrest

You got any images of this setup?? sure sounds interesting.

[anonymous]

Here it is. Simple and

Here it is. Simple and effective. Thanks Bill! Get well soon.

David

[paul von braun]

David,

how do you keep the

David,

how do you keep the servo dry? How does the lead get to the reciever?

I saw this work at the Merstham show - was really good!

Paul.

[himszy]

Paul]I used a 10ml syringe

Paul]I used a 10ml syringe driven by a servo inside the WTC.[/quote]

David, (Too many Davids in this hobby)

How did you secure the syringe to the wood?

Michael

[anonymous]

Hi all,

I can see I

Hi all,

I can see I need to write that article for the AMS!

I should have explained that the servo is in the WTC and the piping just goes through a bulkhead connection. I tried waterproofing servos as per threads in this forum but I was not happy with the results. (Unkind to servos!)

I Dremelled a slot in the ply and put the "finger" tab of the syringe in this. Then tie wrapped it to the ply base.

Improvements?? A smaller syringe(2ml perhaps) and a smaller servo would give more space in the WTC.

David

[himszy]

Do you fill it with

Do you fill it with water or just use air?

Michael

[redboat219]

Davy,
That a very interesting

Davy,
That a very interesting piece of hardware you got there. I think you could use the same set-up as a piston tank in a small sub.

Romel