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Yes, We will see.
I'll try fo find those videos of working torpedos again.
I'll try fo find those videos of working torpedos again.
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Rick L.
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* Asking Questions is a 'Good Thing',
Since Learning is Always a 'Good Thing' * -
Rick what subs are you running?
JJohn Slater
Sydney Australia
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The Revell Gato is the one I've completed.
I also have Revell U-boat and the fiberglass T-class in the works.
Most of my RC ship model building experience is with surface ships, 17 operational, and I'm really enjoying learning about subs. :)Rick L.
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* Asking Questions is a 'Good Thing',
Since Learning is Always a 'Good Thing' *Comment
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well I am sure David will confirm it, but his system I think should fit the Revell Gato.
JJohn Slater
Sydney Australia
You would not steal a wallet so don't steal people's livelihood.
Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.
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God he's good. :)
By doing so - you can not worry about a kill switch as the full discharge can be dumped into the motor - so the torp just stops when its out of fuel. Just need to figure out which electrolytic cap would suit the motor and desired torque for best effect.
The weight issue - gone too.
You just need to:
-counter the torque roll
-build a release mechanism (you could use a reed switch thats NO and trigger switch / circuit closure and motor start via rare earth magnet on a push rod that comes along side the torpedo near the reed switch).
-work on a charging mechanism
David is there nothing you don't know.:D
JJohn Slater
Sydney Australia
You would not steal a wallet so don't steal people's livelihood.
Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.
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I know that I better give credit where credit is due: Dan Kachur, out of Canada, one of the best builders and operators in this game today. He's done effects work for the Canadian film industry (X-files is one credit he has).
He perfected the electrolytic torpedo years ago and they have all the attributes you observed, John.
He sent me a video of his torpedoes -- fantastic work!
David,Who is John Galt?Comment
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Have just seen in the mall here an application that might be worth studying Rick
Those tiny IR helicopters run on these caps.
The IR TX doubles as a charge station for the helicopter
The helicpoters feature tiny motors (similar to what you have posted)
The helicopters have counter rotating blades....
So there is the ingredients of what I would study to take the electric warshot further.
Now David how about those pain in the butt questions mate?
JJohn Slater
Sydney Australia
You would not steal a wallet so don't steal people's livelihood.
Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.
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I think you'll find the little helicopters use small single cell li-po's- the ones I have do.
You can use an ultra capacitor for power, these are more widespread now, and under constant development- they're looking to fit them to electric cars.Comment
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John Slater
Sydney Australia
You would not steal a wallet so don't steal people's livelihood.
Think of that before your buy "cheap" pirated goods or download others work protected by copyright. Theft is theft.
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You have something like this-
However, they would only suit larger scale torpedos.
There are some truly tiny Li-pos available nowadays with impressive amounts of charge, and I would look at those. I reckon you could get down to 1/72nd scale with an electric torpedo, 1/96 scale would be difficult.
You could switch them on and off using reed switches and an electro magnet via a small microcontroller feeding a MOSFET to the little motor. the same microcontroller can be programmed to feed the motor for a specified time (say 5 seconds).
This stuff is so small it could all be mounted inside the torpedo. The electromagnet would be mounted inside the submarine and switched via a spare channel.Comment
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Yes, I experimented with capacitor powered torpedo motors. This was discussed before in this thread, I think.
I found that they would have an even shorter propulsion range than gas does.
Not what I want!Rick L.
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* Asking Questions is a 'Good Thing',
Since Learning is Always a 'Good Thing' *Comment
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What amount of capacitance were you running, and what were the size of the torpedos and motors powering them?
For a small torpedo you should be able to get at least 30 seconds of running (how much range do you want!).Comment
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As stated earlier in this thread, I want to be able to launch from middle of pond to shore, at least several times before having to recharge Anything. :) A 3A battery, on these motors, should be able to do that and then some. I don't want to have to retrieve any from middle of pond. I want them to land at my feet, ready to go again. :)
As stated earlier in this thread, I'm making a tray with built in deactivation magnets in it, to turn off motors as they are retrieved on shore, to be ready to reload.Last edited by toppack; 03-05-2009, 01:05 PM.Rick L.
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* Asking Questions is a 'Good Thing',
Since Learning is Always a 'Good Thing' *Comment
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Yes, okay, but my response was chiefly directed towards John's request for a system small enough for a 1/72 fish.
Here's another link to some suitable caps http://media.digikey.com/pdf/Data%20...Z%20Series.pdfComment
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