discussion Racing submarine

[Guest]

Heres some shots of my high speed underwater missile. I am going to run her on a 50mm racing prop connected to a Graupner Speed 600 12v motor. Shes about 50cm long. I can fit a larger prop in there but I will probably need a bigger ESC first. I am using a separate switching BEC rather than the BEC on the ESC to keep the glitches down and for reliability. Just testing in the bath, I know she's going to be a handful! Not been out on the pond yet, may be next week.

 

[Guest]

That looks a pretty purposeful little beast!

I wonder how high it can jump out of the water! Remember the title sequence of Stingray with the Terror Fish jumping out of the water?

 

[Guest]

Hello Mankster,

That looks like fun !

Regards Sub.

 

[Guest]

That looks like fun. I don't think I would have much chance of seeing where it was going at the speed it will achieve though!

Is it one of Norbert Bruggen's hulls? The bayonet fitting looks like one of his. And is that also one of his combined pitch/depth controllers in there. I have one of them to fit to my Trafalgar but the instructions are in German and I can't make head or tail of them!

Andrew

 

[Guest]

Andrew, it based on a DreamArts hull (they are better known for ther Uboat bits). Yes the pitch depth controller is the same, borrowed from my Typhoon. English instructions here http://www.engel-modellbau.de/catalog/downloads.php?kat=2&osCsid=24451fd5795f72800ae3d6d9cb8254cf The SES 3 switch is to switch the depth control part on and off and to revert to just pitch.

 

[Guest]

we have a member who produced some 'fish' subs about that size/ scale, they were features on supermodels on discovery, they leap out of the water, barrel roll , and do all the stuff a regular sub does... - and they did it all at hi speed ( well fast for a sub)

your racing sub looks awesome, - in the same vein i think, its gonna be a handful to control but awesome fun with it !

is the bayonet seal the same as in the delta kit ? or is it produced by your fair hand ?

 

[Guest]

Very many thanks for that info Ramesh. I already have an SES 3 switch in my bits 'n pieces box and with those instructions from Engel I should be able to get it all fitted and working. I had heard of DreamArts before but had never seen their website http://www.dream-arts.de/seiten/aktuell.html until now. There are certainly some interesting bits for the Uboat builders there. Thanks again.

Andrew

 

[Guest]

we have a member who produced some 'fish' subs about that size/ scale, they were features on supermodels on discovery, they leap out of the water, barrel roll , and do all the stuff a regular sub does... - and they did it all at hi speed ( well fast for a sub) your racing sub looks awesome, - in the same vein i think, its gonna be a handful to control but awesome fun with it !

is the bayonet seal the same as in the delta kit ? or is it produced by your fair hand ?

Thanks, the bayonet lock came with the hull. The Delta does not have an aluminium lock, the oring is held in a goove in the the rear resin bulkhead and a small plastic twist catch holds it in place. I have to dust off my Delta kit and make a start as my winter project. I'll be building it as a camera carrier.

 

[Guest]

the only delta i have seen in depth ( no punn intended) is also a camera carrier, there is not a huge amount of space in francis's delta, but it carries 3 cameras- the 3 images that come back from the deep are very good...2 cameras are colour, one is black and white.....

 

[Guest]

Well she had her first outing today and she performed very well indeed! Sorry no picture, I took the camcorder with me but it was refusing to recognise the disc. Held a steady depth through out on just the pitch controller on its own, nice rolls into turns at speed before selfrighting, Turns on a six pence too. One interesting thing is applying full rudder bring the boat to a halt sharpish, due to reverse thrust effect creater by the big rudder up close to the prop. The motor was emitting a strange smell when I opened here up and was pretty hot to touch. The ESC held up. Only problem is she is not fast enough, about 1/2 the speed on the sub on the video and I couldn't get her airborne. The pitch controller does not allow me to command full up; as the boat changes pitch the controller tries to level her out. I am going to change to Subtech APC to see it this helps. I figure I am going to need to go faster so I am pondering a brushless upgrade and more volts :twisted:

 

[Guest]

I'm glad to hear the first tests went well. The pitch controller kicking in on the turn was certainly not something that would have crossed my mind beforehand. You've discovered something there methinks. As regards the brushless motor I'm pretty sure I saw a brushless duck somewhere (YouTube?) that was performing some amazing contortions - so that might well be a possibility. If I can find the url again I'll post it.

Andrew

 

[Guest]

I've found the url for 'Superduck' - fitted with the brushless motor. Now if you get the sub moving at this speed then who knows what is possible!

 

[Guest]

That pretty neat, but I need more speeeeeed.....

I need to do some reading up on Brushless motors, I have no ideas about chosing the right one for my sub. I'd like to keep it on the 12v battery I have the moment (not headache trying to remove the lead ballast I have bonded in).

 

[Guest]

That looks a pretty purposeful little beast!I wonder how high it can jump out of the water! Remember the title sequence of Stingray with the Terror Fish jumping out of the water?

I remeber that title sequence. One of my favourite children programs. I love most Gerry Anderson programs.

 

[Guest]

oh yea. stingray, joe 90, supercar, thunderbirds, captain scarlet. all brilliant! used to love em.

i couldnt stop laughing after watching that duck. bloody excellent!

 

[Guest]

After reading the comments about more speed I went and had a look inside the model I have of John Cobb's 'Crusader' to check the set-up. This uses a Hacker BSO-11L brushless motor currently running on 12 cells (but can run on more). The esc is a Hacker Master 99-3P. This thing shifts - albeit in a straight line as befits a World Water Speed Record contender of the 1950s. The Hacker url is: http://www.hackerbrushless.com/motors.shtml

Now there has to be something there that will make the sub perform the way you want!

Andrew

 

[Guest]

Holy cow mank. Impressive little beast you got there. You know you could always go with gas motor! (I jest of course)

 

[Guest]

Holy cow mank. Impressive little beast you got there. You know you could always go with gas motor! (I jest of course)

Thanks, the cold weather at the moment means no more testing on the little beasty for the moment, but a brushless upgrade is on the cards...

 

[Guest]

I have never seen anything like your fast subs. are they a kit or did you design them youself?Absolutaly brilliant:bravo: