Thank you for great explanation of DC motors.

Hi Alessandro and all. a nice tutorial. I take the point also made about having reference material under one heading for future reference. If anyone should want to move any of my offerings they are welcome.

I did learn years ago with an unknown motor that assuming you have an amp meter with a high end reading, then put your selected voltage to the terminals and measure the stall current of the motor.

This should be done for the shortest time to get a reading. Too long and it can affect the permanent magnet. Take 20% of this reading and it will give a guide to the operating and most efficient current to operate the motor under load.

regards
Roy

Gracie Mille Mia Amico! Bellisimo!
So well organized & explained that even a Mechanical Engineer,like me, who has long forgotten the teachings in his Electrical Engineering classes can understand.👍👍👍👍

Thank you very much Toradog for your appreciation and your kind words.
I'm immensely pleased that you liked it.

Alessandro,
That is a wonderful tutorial. Thank you for posting it AND for updating it.😉😉

I am very happy that it is useful to you. Rereading it I made further corrections (it is now the fifth revision). The videos (some also in English) help you understand the text. If there are any unclear parts, please tell me.

Alessandro!
Thank you so much for this. I appreciate the effort you put into this research and it is a big help to understanding the mechanics of the motors we use.
I will try to apply as much as I can moving forward.
👍😊

Hi Jumpugly, I finally finished what I promised in my message number 68 of this topic. Sorry for the delay.

The manufacturers' instructions are very useful but you have to know how to interpret them. I hope to do you a favor by inserting some indications.
If errors are reported to me (including translation errors), after a careful examination, I will be able to re-edit the message with the appropriate corrections.
In this way, a small guide could be useful to everyone even after some time. In fact, I have noticed that many interesting and informative discussions have been lost in the forum or in build blogs where it is very difficult to search for old topics.
I'll give you an example:
Some time ago Roy attached a very useful link (in message no. 45 of this topic) in which the manufacturer "MabuchiMotors" inserted a lot of detailed and well-explained information on electric motors.
The problem is that if I wanted to look for it in a few weeks, months or years it will be increasingly difficult. In fact, if I wanted to look for it, I would certainly remember that it concerns electric motors. However, by entering the word “motor” (or similar) in the search field I would not find it at all (because the search is only related to the title of the topics and not to the internal contents); certainly after some time I would not remember that this important message is in the topic entitled “American Scout C-2 Freighter”.
Therefore the message will fall into oblivion.

For this reason I wrote everything on the page “How to articles” with a specific title that facilitates the text search: “Permanent magnet brushed electric motors. Main features. Basic elements of distinction. How to evalu...”

below is the link:

https://model-boats.com/wiki/147457

Hi Jumpugly, I like this ship model more and more. You are working great, I admire you.
I hope to send you the message I promised as soon as possible. I am working on it in my spare time, (it is not enough for me to write what I remember, a minimum of verification is necessary to avoid writing and spreading inaccuracies).

And a huge shout out to St. Lukes in Basildon, Essex. Who had the extremely rare white metal fittings box that was meant for this kit in their thrift store. A very lucky find as this kit's unusually low price was a reflection of the missing proper fittings box! A discovery that my wife Mary would not have known about and I only just discovered being wrapped up in the hull construction!

I figured I'd have to go the 3D print route, but luck would intervene.

Hallelujah!!!

Yes, Jumpy I was going to bring everyone's attention to it.🤣🤣 The shop looks a little dirty. That is the way that happens, the more the boat gets built the dirtier the shop becomes it is a sign of progress, and genius at work😜

Good morning Ron!
I will report back on the coamings. But, I would hope that would be a part of the process and makes total sense to me. The instruction book, which is quite long, seems to be divided into three sections: hull, electronics, and topside systems.
I am still working on saving as much wood as I can in the dye cut boards. No small task with these old Sterling kits.
😉

Do you add a coaming around the inside edges of the various openings? The coaming helps to keep water out, they align the structure and they don’t distract from the finished model as all the superstructures just slip over the coamings.

Just asking?

Ron

The shop's looking pretty dirty. I opted for the primer grey decks. I know it's boring, but pretty much on point. Waiting for the magnets to arrive, but as mentioned moving onto the details.
More to follow.
And I stand corrected on my scale calculations as I became confused, but what else is new? Every day it's something new to confuse me.
🙄
459' real length at 50" kit length is 1:110 scale.

It's not a problem if U can solve it! It's a 'challenge' & or a 'solve lution'? Waiting to be found. Challenging, eh! Easy for me to say, yeah!, that's why I'm saying it. I don't have the 'solve lution'. 🤔 A charity offers 'free' language courses. I know 'enough 'f? ing language', I just? need to learn to 'Bloody Calm Down! From 'frequent, fussy & or fiddly model building?🤔 If it 'looks too good to be true'! It probably IS!, 'A woman'! (& or many of the 'desirable, delightful, curvious, amazingly talented MODELS, U guys build, sail, motor & or display! 'B J'. 👍

Did U ever 'push' a 'pull' door? & or Did U ever 'pull' a 'push' door? No! No! The 'other'! push & or pull! With 200 pages of 'Bad Dad 'J'okes, (& counting), &, as a Doctor has a practice, a Dentist has a practice, I'm a 'practising' comedian. Obvious need more practice! 'B J'.🤔 If U don't laugh!, U may well cry? BUT!, 'LEST WE FORGET,' How very lucky we mostly have it. 👍

Problem solved. Looks good. Next problem.
👍👍👍

Hiya' TD! Yessir, resin bath will happen on what I routed , and you are 100% right on the Flexi-cable. Not even sure why I tried in the first place!
😂

I will def seriously consider the magnet suggestion for the poop and rear main deck where all the mechanicals are. Sealing up the poop deck over the rudder makes me nervous for sure!
👍

"Colorful Language"? I don't believe it...
Looks good jump. That balsa block is plenty strong enough, even with the small dent you put into it. I might be tempted to resin coat it and as much of the inside as possible. Flexi cables don't seem to work very well for rudders especially unless they are paired up to push/pull. Rods are great.
I have tried, notice "tried", to make everything that goes into the hull serviceable. Sooner of later, it will need to be. Hidden hatches work great for accessing things like rudder posts, ect and with magnets they are easy to open and close.
Looking Good!😀😀😀

After a 24 hour running knife fight (much like a visit to one of my sister-in-law's houses) I was able to retro fit my bench tested salvage yard equipment into the hull. It may not be pretty, but it works.

The rudder arm set up was brutal and light-years away from the original plans from the 1950's. I even tried a long flex shaft for starters as I had one laying around, but that was a total stroll into an abyss of colorful language. Then I had to route out the giant balsa block stern in order to get the rudder arm travel sorted. I wish I was better with the mechanicals, but I've learned not to get too crazy and chill out. In essence used as much usable space as possible and not cram every bit of electronics into the same tub.

Poop deck and main deck will be applied and painted and then it's off to the above deck stuff. A large styrene purchase is in the offing.

As Tom Waits said, "I'd rather have the bottle in front of me than a frontal lobotomy."

😉

Hi Jumpugly, I just saw the photo of message 79.
I really like the choice of colors and how you painted.
Excellent you know how to paint very well.

Many thanks one and all for the kind words and encouragement! I will say that anything painted in dark colors, especially black, is incredibly unforgiving! And I learned that at a very young age working for my Grandfather's painting company.

Aside from dark colors over large surfaces, bosun chairs, and wooden ladders over 40 feet tall are also an issue for me to this very day!

😂😂😂

And yes ToraD, the prop/stuffing box and overall layout for possible leaks is freaking me out despite the fiberglass and multiple resin coats I'll do a tub test soon and report back on that. Shaft collars will be the order of the day.
Fingers definitely...🤞🤞🤞

WOWZA!
Beautiful and nearly done
Just a few details to go, deck superstructure, rigging etc. You’re making a great job of it. Take your time make the rest as nice as the hull.
👍👍👍

Graf Spee would be a challenge, but AS will easily out run a Duck. 😉😉

" ...just keep her away from the Jagdstaffel."

And my Type 1A U-Boat and DKM Graf Spee Cash😁
😎

Good Lord Jump she’s looking goooodddd! I gotta ask, did you glass the hull? It’s sweet work in any case. I think the idea for using plasticard to do the gingerbread is a good idea. For one thing, if your subject had a metal superstructure, it’ll save you time filling and sanding the wood grain to make it smooth enough. On your motor choice, if your running 6 volt gelcell or lead acid you’ll probably be fine, if your doing a 6 cell nimh or 2 lipo you might want to up the winds to 45 or so. Of course, you can adjust your throttle endpoint as well, more than one way to get her done!!
Again, very nice work…just keep her away from the Jagdstaffel.😀
Cash

Sweet!
If my very aged brain recalls correctly, the shaft/ stuffing box arrangement on the Scout, the Missouri as well, left a lot to be desired, ie, leaked like a seive. A grease tube, nylon washer and shaft collar should take care of things. If not, an o ring stuffing box is good way to go as well.🤞🤞

The Me262 was salvaged from a recycling bin at the town dump. I waited 13 weeks for replacement parts from Trumpeter! But, it was fun all the same.
😉

I see him JP.
'The Man in the White Suit!'😁
Nice hull, and well done with the waterline.👍
Not easy on ships this size, I know well from my 1/72 destroyer.
😎
PS Looks like she's about to be 'Kamikazed' by an ME262😮

A flurry of activity today. Hull painted, minus the stripe and a hastily built stand. Over the next few days I will bench test the motor and electronics before I install them. A coat or two of spar varnish overall and then the hull will rest for a couple of weeks while I start the bridge and assorted superstructures.

Just for grins... I had a spare 1:100 scale architectural figure left over from a Frank Lloyd Wright (Fallingwater) build I did this winter that happens to be the correct scale for this kit. If you look carefully you can see him near the front of the stand.

😉

Jumpugly, I'm curious to follow this technique that I don't know.
Post lots of photos and descriptions when you make it please.

Thank you for the kind words guys!!!
😊
And being a styrene junky from 60 years of "plastic fantastic" building and restoration I am seriously considering go the route for the topside work Tora. Or, at the very least, a combination of wood and styrene.
😁

Minds that wander, ponder. Minds that stay still stagnate.
You are doing a beautiful job Jump. Have you considered replacing the house balsa with styrene or possible some polyurethane foam sheets? It might make you build easier, given the wood's age. Plus, the foam😊 loves cyano.

Intelligent people let their minds wander very often.
Perfect like this, Jumpugly.

re 71 post. Yes and sympathy from UK but 4 years and no time off for good behaviour!

We put up with our mistake for a fair while but eventually he went, never to return.

Roy

Alessandro...somedays in my shop my mind tends to wander! I assure you she stays the same.
😉

Hi Jumpugly, you really did a great job with the hull, congratulations, very good, BRAVISSIMO!

But I advise you not to modify it into a clipper. Look carefully at the hull of a clipper and note well what the differences are, they are there and they are very big (don't stop at the upper water lines only).
In my opinion, following the original project you will still make a masterpiece.

Hey Jump,
From one American to another: Yup, we lost our minds....😁

Hull in primer. It's amazing, but for a few minutes I thought this hull might make a super nice clipper ship. Such are the lines, especially the sharp entrance. Or, I might just be losing my mind.
Paint is next then in go the electronics before I set this monster aside and start work on all the topside gingerbread.
😂

Thank you Alessandro!
I am going to try a 540 35T with a slightly over scaled prop...but not too big. Should be interesting to see if it cruises calmly. Considering the beam I am a more than a bit concerned.
😉

Hi Jumpugly, this ship is turning out really well, but I'm amazed (once again) by your speed.
Bravo.
You have already prepared the housing for the electric motor.
Whichever motor you choose, he will have to be happy with the splendid doghouse you are preparing for him.
Regarding the right choice of motor, I am preparing a mini guide for you (generic indications, no formulas); I hope you find it useful and enjoyable.
The problem is always the translation, I would like to avoid writing incomprehensible things.

Foredeck in place as well as motor mount. The mini stone bathroom tiles under the foredeck were installed with a trial fitting of the motor and electronics aft when I was balancing the center of gravity. More will be required, but it's still early.
😉

re post 60! Hi Doug I accept what you say but suggest a revisit to your photo, I would have accepted 145 but 160......👍
If it is any consolation my grandfather on the paternal side was born in 1848! Quite a stretch for 3 generations.

My wife said I am an old man though! Of course she is right, that's just in case she reads this!😉
Roy

I can see it now..that American Scout pulling into harbor in California inthe late 50s or so, some young crewman tuning his radio…and hearing Wolfman Jack.😁

And I thought 'Mooning' went out with American Graffiti🤔😁

(Sorry about the Threadjacking Jump😔 THEY made me do it, honest Injun!))

😎

As long as they don't look like cheeky melons....

Wear it! Huh?
Arms out the bedroom windows I suppose.
Other appendages ... 😁
😎

Awe, come on Doug... if the house fits.....🤣🤣🤣

Hi Roy.
Re "Did you not have a word with the builders Doug."
What are you insinuating?
The house was built in 1860, the date is set into the gable wall.
I may be gettin' on a bit but I'M NOT 165 QUITE YET!😜
(I don't look a day over 150😁😆)
Ciao, Doug😎

Trial fitting skeg, stuffing box, and rudder. Interior is spar varnished, as is my habit. So much more to do, but enjoying this quite a bit and for a brief moment thought of turning this hull into a clipper ship…such are the lines!!!
😁🤣