1/72 Yamato - or a steep learning curve!

[ozpirate]

Herbie I can't help you directly but I could point you to a friend of mine at the Hubertus Model Boat club. There are quite a few guys there that can help you. They run on Sundays. Might be worth a visit if you can find the time. Ask for Joe, he sells quite a bit of electronics and has the knowledge to back it up.
Hope it helps you.

[HvyCgn9]

that sounds like you may have connected the batteries around wrong way and created a major short ? Are the batteries hooked up one per esc or in parallel?? For both esc's to fry up... Did you have fuses between batteries and esc's?? Any pic's of your wiring layout??

Cheers Bruce

[Sauragnmon]

I have to say, I think Bruce's comments/concepts were the first things I thought of, especially when you said the wires were melted too - that means something cooked up an overcharge, and there was a lot of resistance in the system - resistance tends to transfer directly into heat when it gets too high, heating elements are nothing but coils of high end resistance wire that causes the circuit to heat up. Installing some smaller clip/bar fuses into the power lines would avoid an overload like that happening again, which would save you a lot of funding - fuses are far cheaper than the rest of the electronics.

[herbieham]

Hi guys, thanks for kind thoughts.

I herbieham, earn idiot of the decade award.

battery in backwards...........................


OH DUH!!!!!!

On the positive note, I now have an excuse to redo it all, and plan the reciever box better.

But still, OH crap.

[herbieham]

Where did last post go?

Motors, ect all working again, thanks Loyalhanna dockyard, just have to "set " the ESC's to the motors now, and figure out transmitter to recievers in turrets
big relief though.
onwards and upwards

On a sour note, aussie guys, avoid hobby unicorn based in brisbane like the plague............
I am so angry with their so called customer service.........thieves in one word, thieves.

[herbieham]

have not posted for a while, but project continues

Motors, EDCs all fixed and working, also i have all 3 turrets turning.
One however, "shimmies", it seems to hunt whilst moving.
is this a crappy servo?, I can replace it.

Other news for the boat, the deck has begun to go on, and construction of ballast as well is underway. next pay day, next month will i think see a basin trial for sure, cannot wait.
Trying to upload latest work, hopefully next post!

[herbieham]

Still rough, but getting there

[herbieham]

built clinker style

[herbieham]

and I still hate hobby unicorn.........................

[Fliger747]

Geeze, at full load this thing will weigh about 400 lbs? How do you transport it? Amazing project.

Inspirational work!

T

[Fliger747]

Maybe 20 years ago I did bucklers as described above with liquid latex brushed over a form. Mine was done with hardening putty over a tubular barrel section. Fortunately I kept the form as the latex will eventually deteriorate. However getting the fabric folds and an ability to move through a full elevating range would be a challenge.

Quite a project. T

[herbieham]

[herbieham]

BASIN TRIAL!!!!

Everything worked!
the propellers did not fall off-tick !
The motors did not burn out -tick!
The flexible shaft couplings worked, tick!
The shafyt seal did not leak - tick!
And all the electronics worked like a charm-tick!.....LOL

Seriously, it went very well, I was able to turn yamato a full 360 degrees in the pool under power.

I have 4 car batteries in her, for about 4 cm draft, I think I need the equivalent of another 6!!! to get to full water line
draft, maybe even more, thats the next step.
Speed, I feel, will be very realistic, man, those props push some water......

To say I am over the moon, is no understatement...........today was a real, real highlight.
A steep learning curve, yes, but, its getting easier now!


Superstructure just plonked into place, not even centered........

More photos to come

[herbieham]

bricks of course a just for today thing

[herbieham]

[Goodwood]

That...is a very large boat.

Congratulations on getting everything sorted out, mate, she looks a real treat! You could always put in some motors to run the turrets, that'd add some weight! (only joking!)

Maybe it's possible to have a ballast system installed? Kind of like how model submarines work, except it's not designed to submerge the ship? That way you don't have to keep adding/subtracting weights to keep waterline.

[Ticonderoga]

Well done Herbie, always a great thrill when things go according to plan...... and there is true progress. Well done, very pleased for you

Andrew

[KevinYoung]

That's Beautiful congrats. Kevin

[Sauragnmon]

Congratulations on the successful Pool test. Standing beside it, you put it in real visual scale for me, and probably a few more of us. Impressive.

[Channell]

You are gonna need a bigger pool!