Periscopes - Lets get them working!!!

[paul von braun]

Okay Mike, pseudo fracas over.

Okay Mike, pseudo fracas over. Thanks for the help. We shall resume our discussion tomorrow, as I have a big operation to do in the morning.
I think what I need to do is to use the electonise switcher with a motor (servo too slow), in conjunction with a pair of micro switches to limit travel. If you can come up with a circuit diagram (that works) then you can command my u boat for a bit at the regatta. Cant say fairer than that!
So report back to Herr Kaleun by tomorrow...

Paul.

[anonymous]

If you can come up

If you can come up with a circuit diagram (that works) then you can command my u boat for a bit at the regatta. Cant say fairer than that!
So report back to Herr Kaleun by tomorrow...

Paul.

Paul, I hope that the offer is not just open to Michael! Its too good an offer to pass by. It looks like your boats going to be a beauty. You can have a go with my little fleet too.
I've just sketched this out for you.





Link in case the image doesn't show

[himszy]

Trafalgar http://www.subcommittee.com/forum/icon_mad.gif http://www.subcommittee.com/forum/icon_mad.gif http://www.subcommittee.com/forum/icon_mad.gif http://www.subcommittee.com/forum/icon_mad.gif

Trafalgar

Here you go Paul Never said it had to be mine and that I had to post it first )Circuit Diagram

If you look back at my setup originally, I did mention that you might what to decrease the left gear's size to increase speed.

Michael

[anonymous]

If you don't want to

If you don't want to make up the servo controlled reversing circuit with the two microswitches, then you need the 2Ch Electronize switch (which replaces the two micro switches in the reversing circuit) - This plug straight into a free channel on you rx and is operated via switch/stick/slider/knob on your TX

[paul von braun]

Cheers chaps! I think that

Cheers chaps! I think that you both deserve a go at the helm (now I've just got to get it finished!).
I think I will abandon the servo option and use the mabucci motor I rescued from a pulse lavage unit at work.
I could still use the servo for lowering/raising the anchor!!!

Michael, you really are a cheeky sod!!!

[paul von braun]

...or what about this?

Model control

...or what about this?

Model control devices switcher

That said, I do like electronize as their stuff is well made (gotta consider those depth charges!!! lol). Trafalgar - what does the RL A & RL D mean. NO & NC I understand.

Paul.

[anonymous]

...or what about this?

Model control

...or what about this?

Model control devices switcher

That said, I do like electronize as their stuff is well made (gotta consider those depth charges!!! lol). Trafalgar - what does the RL A & RL D mean. NO & NC I understand.

Paul.

Yes the MCD gear is like the Robbe stuff, you need a module that attached to the transmitter and decoder/switcher unit that goes in the boat. RL (Relay??) A in the Common A and D is Common D. Their 4 ch version has a RL B and RL C inbetween those two You wire it up just like a Microswitch.

[raalst]

Hi all,

another possibility is

Hi all,

another possibility is (as I remember correctly from a german forum)
to file off the thread off a threaded rod on both sides.

the idea is that a nut travelling over the thread will stop
because of lack of thread. all you need is a spring to push the
nut on the thread again once rotation is reversed.
that way, no electrical changes are needed but to fix the
variable resistor.

an (untested) idea of my own is to use some form of
magnet clutch (? is that the word ?) in which case you also have created some form of slippage when the stuff arrives at it's endpoint(s).



Edited By raalst on 1139952149

[paul von braun]

In the further interest of

In the further interest of this thread, I thought you might all like to see this]http://www.mutr.co.uk/images/products/main/DSCN0692.jpg[/img]

A light duty motorised miniature actuator capable of a 40mm stroke. The ram rod can be built up in a variety of ways around a plastic block, whose movement is controlled at each stroke extremity by limit switches. The actuator comes complete with motor, unfitted limit switches, instruction sheet and a miniature slide switch for manual control.

Not my leg work I'm afraid, but the efforts of 'Nixie' at RCGroups.
Dive planes thread

Only 40mm travel though. I'm aiming for nearer 100mm - the principle and design look good enough to copy. As he says, might also be suitable for piston tanks.

Here is the link to the firm who manufacture this item, at a cost of only £7.69 - aimed at school technology projects.

Linear Actuator

Paul.

[Guest]

Takes up rather a lot

Takes up rather a lot of room for a piston tank actuator, and the design shown doesn't have a gearbox by the looks of it, so torque won't be impressive.

[raalst]

but if you take this

but if you take this and replace the motor with a converted
servo...

btw, thanks for the link to that shop. it carries
a surprising amount of interesting stuff.
does someone in the UK have experience with that
"polymorph" stuff in our line of work ??



Edited By raalst on 1140119006

[paul von braun]

Right then, I have now

Right then, I have now collated all of the required parts to make the periscope mech - am not going to do the limiters with microswitches, but with a mechanical method described to me by a chap at the show I went to in Brighton this weekend.
Now the question is is, what am I going to put the whole lot in? A small wtc of some description seems the most likely option, but whhat do you all think?

Thanks,


Paul.

[paul von braun]

Ah ha! I found this

Ah ha! I found this -



Acrylic tube (various diameters)

End caps next! Oh, btw a mate of ours bet me that I would give up and use a cork!

Paul.

[himszy]

Paul,

That company charge an arm

Paul,

That company charge an arm and a leg for acrylic tube (from memory, havn't checked their prices recently).

I have just ordered lots of orings for sealing the 50mm OD 46mm ID tube (for my kilo wtc). If you want me to make some endcaps for I'd be happy to. I'll be making a batch of them so it'll be no skin off my nose. Also got some tube if you want it?

Should be able to get the whole lot to you by the end of the week/early next week at the latest. Just a thought.....

Michael

[paul von braun]

Mike,
is six pounds thirty

Mike,
is six pounds thirty six pence a lot of money for a 500mm length of od 50mm dia. acrylic tube?

Paul.