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[T888]

Hi thanks for your inputs it’s appreciated ,

However this is a lesson in not to be lazy, just because I had a couple of 555 close to hand which were set aside for a 1/96 “C” Class Cruiser project. I thought they would do as I did not wish the Visby to go off like a racing boat. The 555 will be being removed and replaced. I know these water jets need to run at I high RPM. I’ve used Ocean work water jets and the KMB 28 mm units on my 1/12 Shannon and RIB. These models are running brushless motors at 22-25 K RPM off load. But as the Visby was not to be a racing boat or a slow canal boat .and the 555 where close to hand my head said not to use them, but my lazy side said why not.

So I will be looking for a Suitable brushed motor with a high RPM as replacements as the recommended Speed 600 motors seem to be no longer available.

[HMS Invisible]

The 555's overly high torque constant can be made to work in your favour if you overcome the voltage hurdle. The dividend with operation at a low motor load (>70% no-load rpm) is high efficiency & longer duration. If that's at a premium then boost the voltage then take a 555 current measurement and you'll see how low it is.
  A kit supplier around Y.2.K. would pick 7.2v NiMH as a start point and fit the electrics around it. You can go that route because any random 500/540/550/600, short of the 4.8v 540 fan motors in an old "dust-buster" vac should raise the jet rpm.

[T888]

Quick update,

We had a navy days event at the Solent model club yesterday, I did a quick test run again after doing the follow changes.

Motors
Removed the 555 and replaced them with 683

ESC
Yesterday When running with a 15AMP ESC, on full throttle I lost the 10AMP fuse. I therefore have replaced the ESC with a 50AMP ESC so with the new ESC I upgraded the fuse to 20AMP.

I’ll post a video of the Visby when I next go to the pond.

[T888]

Internal layout

[T888]

Bit more progress, still need to add the following


flight deck lights
Flight deck nets


main gun


Trim tabs and the hydronic pipework detailing


main engine intake grills.


1/72 scale HN 90 Helicoter.


minor detailing like wipers, machine guns and CCTV units

[Fastfaz]

    Now that's the kind of grey funnel boat I would like to build. Great job and looks superb, I really like Naval boats aircraft carriers etc but I'm not sure I have the patience for an extremely long build ( check out Stan Reffin's Carrier, absolutely superb quality build with amazing detail ). Very stealth and sleek.
       Well done!
             Cheers,
                   Pete.

[T888]

Thanks Pete,




This build hasn’t taken that long approx 3 weeks. It’s been constructed from 1.5mm styrene sheets. I did this as my current warship project I’ve put on hold as the real ship is still being constructed and info has dried up at this time.


Check out my 1/96 T26 HMS Belfast and 1/96 Arleigh Burke.


Most of my warship builds tend to take me about 3 years.

[T888]

Hi, All,


Thought you may like see my progress to date.

[Fastfaz]

Hi,
    Looks good, I have the patience to build something like this boat but definitely not for 3years, well done keep it going. 
              Regards, Pete.

[T888]

Thanks Pete,


This has now taken me 6 weeks. I’m tied up with South Coast Modellers events, but hope to get her water tested. Once I do I’ll post a video.


Don’t forget we all had to started model making some where and hopping to build the best we can, just take your time and always learn from each build.👍👍