Stingray Build

[He Who Shall Not Be Named]

Well thats about all I can do for now untill the WTC is ready, I did some measuring and the gap that the cabin sits it is a tad over 3 and a half inches and the depth is well over that so it all seems good. I will do the rest of the bits tomorrow and send it to Bernie on Wednesday to forward to you. You will get the new Vacform Cabin with this one. As thats what all the kits will now come with. I look forward to watching you work your magic.

Thank you sir, I gratefully accept the baton and will carry it from here. I'll immediately move forward with the WTC/SubDriver and ballast de-watering sub-system when the package arrives.


As I see my responsibility at this point:


1. size and outfit working, SubDriver's for you and me (how about Bernie, is he into r/c?) for the STINGRAY
2. work out a quick hull de-watering sub-system employing the PJ suction side
3. develop a practical two-axis gimbaled nozzle to work within the confines of the Ratemaster
4. work up a multi-media fittings kit for the interior and exterior (where required)

David

[RCnut]

Thank you sir, I gratefully accept the baton and will carry it from here. I'll immediately move forward with the WTC/SubDriver and ballast de-watering sub-system when the package arrives.


As I see my responsibility at this point:


1. size and outfit working, SubDriver's for you and me (how about Bernie, is he into r/c?) for the STINGRAY
2. work out a quick hull de-watering sub-system employing the PJ suction side
3. develop a practical two-axis gimbaled nozzle to work within the confines of the Ratemaster
4. work up a multi-media fittings kit for the interior and exterior (where required)

David

Sounds good to me and as far as I know Bernie will want A subdiver as well.

[He Who Shall Not Be Named]

Sounds good to me and as far as I know Bernie will want A subdiver as well.

Done! .................................

[RCnut]

Just thought you guys might like to see what My Partner is making, Just a little bit related to this thread subject lol.

It is planned that this will be radio controlled as well.:biggrin: That way we can go to some model boat/Sub shows and do the chasing bit....you know leaping out of the water and blowing...........oh wait, sorry just dreaming lol.

[He Who Shall Not Be Named]

Oh, No!!!!......

[RCnut]

Looooooool, Sorry bout that. but it had to be done and She wanted to do it.

[He Who Shall Not Be Named]

A female type Model Builder!? (thank God, by the way, the word 'partner' today goes down like razor wire ... you never know the context).

I've only seen two gal's worth a damn at the Craft in my life. No, Ellie is not one of them: in the shop she's a production drone (glass work and casting duties). That is, when she's not busy cutting finger-tips off on the table-saw or slinging molten white-metal around the shop... there's something about her and spin-casting that just does not gel. Eleanor's otherwise the MK-1, Mode-0 House Wife: she attends to the household domestic duties, keeps me in coffee, screens my incoming calls, and chases out the occasional home-invader. A tough old bird.



I'm not the Politically Correct type, so I was going to give that piece of news (the work of your Partner) a very wide berth. Thanks for the clarification. It does matter!

Now that fish vehicle (X-20's ride) is a project! Love the mottling effect at the front. Details! OK, propulsion and steering is obvious. How are we gonna control this thing in pitch?

(watch Andy jump in with the very European, shifting-the-battery-weight option).

David

[Subculture]

You're going to end up with a skipjack inserted where you get to blow ballast if Ellie reads this!

Weight shifiting is an option if the fish is fairly slow. I'd have thought tiltable twin jets, with steering in a tank style would be best for this. IIRC, the Terror fish didn't flap its tail for propulsion.

[He Who Shall Not Be Named]

You're going to end up with a skipjack inserted where you get to blow ballast if Ellie reads this!

Weight shifiting is an option if the fish is fairly slow. I'd have thought tiltable twin jets, with steering in a tank style would be best for this. IIRC, the Terror fish didn't flap its tail for propulsion.

LOL. Indeed! Today's mission to to keep her away from the monitor as I pull up this thread!

Good catch, Andy. I assumed (you know how that word breaks down!) it flapped its tail. Wrong! I should shut-up till we see how this thing matures as a master.

David

[Captain Scifi]

It does wave it's tail but it's all for effect not really for locomotion. This did get me thinking however that a good swimming effect could be made with just the water flow over the model, it may mean a few compromises like changing the tail from a rigid material to soft flexible film or fabric. I am thinking for the motion that a limit switch or lever could be used to tilt the tail (rudder style) from a little port to a little starboard attitude, you wouldn't need much just enough to send it in the opposite direction. I'll try to find a few minutes to draw what I mean but it would be based on a clock ratchet armature where the water flow would over the tail would stand in for the pendulum or balance wheel and the rocker would alter the tail pitch to change it's direction. If the motion was left to cycle it would go first to one side then at the limit of travel actuate the angle of the fin to travel to the opposite side. I think this would capture the motion of the screen used model quite elegantly.

Alternatively, the tail is just the rudder and I am completely bonkers.

[Subculture]

Would be easier to use a servo hooked up to a picaxe microcontroller, programmed to shuttle back and forth.

[Captain Scifi]

Could you link this to the speed controller?

[RCnut]

Im gona post some pics of my Stingray and get this thread back lol. Should have kept my mouth shut lol.

[Subculture]

Could you link this to the speed controller?

To speed up and slow down the tail? Yes that's possible, adds some slight complication to the code, as you will have to speed control the servo, but it's definitely doable.

Simpler if you divide the throttle response into a few discrete stages, e.g. half a dozen steps- you won't notice the difference from full proportional control.

[He Who Shall Not Be Named]

Im gona post some pics of my Stingray and get this thread back lol. Should have kept my mouth shut lol.

Your fault! You keep shoving this candy in our faces, then act surprised when we eat it up.

David