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>> Home > Forum > Electrical Related > Controls problem
Controls problem
(609 views)
Author Message
malcolmstroud
(Petty Officer)





Forum Posts: 3
2nd Jun 2018 12:16  
>> Permalink
mdlbt.com/42340

Hi there

This is my first boat model build and my first post, so apologies...

I have a passing familiarity with model aircraft radio control, and a fair amount of scale experience, but a couple of years ago took it into my head to convert a 1:400 scale Titanic model to r/c.

I worked out the circuit with a lot of study, using an Mtronics W tail mixer, 3 Viper ESCs, three coreless motors and a Kyosho 2.4GHz receiver. The build went reasonably well, and when I connected it all up and tested it the motors ran and could be controlled with the Android phone app more or less as desired.

However, I knew the power supply being connected to the receiver wasn't ideal so I disconnected it all, intending to connect the power through one of the ESCs.

After leaving it for a couple of months I can't get it to work again in any configuration, or even get the ESCs to enter set-up mode again.

Is there anyone in the North of England who can give me some hands-on advice? Have a look at the set-up? I have spent many fruitless hours trying to get it working again. I feel sure it's something simple I am overlooking. I am in West Yorkshire, near Halifax/Rochdale. At this rate I am thinking about just making it controlled with an on/off switch.

I will put a photo in the photo gallery or here if I can. Thank you.

Rookysailor
(Commander)





Forum Posts: 103
2nd Jun 2018 23:02  
>> Permalink
mdlbt.com/42358

Hi Malcolm, Noticed your in Todmorden, we have a couple of people from there in our boat club, we would welcome you and your problems at our club, you can visit either Wednesday morning of better still Sunday morning 9:00am till 13:00pm.
BMMMS - BURY METRO MARINE MODELLING SOCIETY
Clarence park lido, Bury. http://bmmmsuk.yolasite.com/
Hope that helps to solve your problem.
Good Luck, 👍 Peter

onetenor
(Fleet Admiral!)





Forum Posts: 408
2nd Jun 2018 23:52  
>> Permalink
mdlbt.com/42363

I presume you re charged the battery!!?👍

RNinMunich
(Fleet Admiral!)





Forum Posts: 2331
2nd Jun 2018 23:56  
>> Permalink
mdlbt.com/42364

Agree with Onetenor 👍 That's number one on the checklist!
I would also check it all out with a conventional TX before you start tinkering with the phone app again! One step at a time!
Doug 😎
BTW: be interesting to see what motors etc you are using and your layout in the hull as I have a 1:350 Titanic I intend to motorise. 'Plastic Magic' 😉


Young at heart - slightly older in other places 😉 Cheers Doug
Grant me the Serenity to accept things I can't change, - the Courage to change things that I can,
and the Wisdom to know the difference!
onetenor
(Fleet Admiral!)





Forum Posts: 408
3rd Jun 2018 02:39  
>> Permalink
mdlbt.com/42368

Good glue that Doug."Plastic Magic" I use a fine brush to apply a drop to one end of a seam and let it run down by capillary action.Puts me in mind of buying an ounce or two of Chloroform from the chemist to do the same job😋 Try and do it now.Same with ether🤔. Evo-Stik Serious glue is also pretty good too. A bit like the old polystyrene cement but not quite.👍 I agree re the testing with a Tx. It crossed my mind but shot out again😁
I have a Flower Class corvette HMCS Snowberry to do the same with. There is a blog for this on FB IIRC inc a vid of the build👍👍 Google it. Google may have yours too.

RNinMunich
(Fleet Admiral!)





Forum Posts: 2331
3rd Jun 2018 09:00  
>> Permalink
mdlbt.com/42375

Funny that John, I still have the original 1/72 Revell 'Snowberry' in my 'to do' stash😉 Over the years I have also collected various after market photo etch to 'tart' her up a bit. So many boats - so little time 🤔
happy sailing folks, cheers Doug 😎


Young at heart - slightly older in other places 😉 Cheers Doug
Grant me the Serenity to accept things I can't change, - the Courage to change things that I can,
and the Wisdom to know the difference!
malcolmstroud
(Petty Officer)





Forum Posts: 3
3rd Jun 2018 09:52  
>> Permalink
mdlbt.com/42377

Thank you for your replies!

Low battery is not impossible; but it powers the motors fine direct, receiver lights come on, ESC lights come on, and the phone connects to the receiver fine via WiFi, so I assume it's OK.

Peter - I will pop along to Bury, probably today, as it's a lovely Sunday morning. Thank you.

RNinMunich - I don't have a compatible TX but will look into that at some point.

I did consider the 1:350 version, but read that the dies were very old now, and that the Academy 1:400 was more recent and far more accurate.

I'll show some pictures of the hull layout later. It was quite a struggle, and I've gone to quite a bit of effort to keep it balanced, with a heavy water pump towards the front to make it go 'down by the bow' (but not sink). Yes, quite ambitious. The hardest part was that the two outer props are incredibly close to the hull, so that only very small motors will fit. I didn't want to go for any sort of flexible coupling as I thought that would lose too much power, and larger motors probably wouldn't fit anyway.

I don't really mind if it's slow and hard to manoevre, as that would be realistic. If it doesn't work I may rip the motors out and just pit one big one in the middle and steer by rudder.

Westquay
(Fleet Admiral!)





Forum Posts: 761
3rd Jun 2018 10:30  
>> Permalink
mdlbt.com/42378

Another good glue is Plastic Weld, by EMA Plastruct. Available from most model shops or cheaper online. Also glues Perspex and ABS.

Martin

malcolmstroud
(Petty Officer)





Forum Posts: 3
3rd Jun 2018 19:40  
>> Permalink
mdlbt.com/42385

I went along to Bury Metro Marine Modelling Society and got some good advice from a chap called Peter (may not be the same one...) Thank you.

The upshot is I'll be swapping the dodgy App-driven Tx/Rx for a proper one.

And why did I buy an unbuilt trawler model? Well the 2ch radio control will come in handy as a test setup anyway!