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Author Topic: Deans marine HMS Dreadnought - First build!  (Read 37659 times)

tonyH

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Re: Deans marine HMS Dreadnought - First build!
« Reply #125 on: November 30, 2022, 02:30:36 pm »

Just on the matter of training and elevating the main guns, you'll need to slow any movement down a lot if you use servos so you'll need the little units (servo morphs) such as these https://www.componentshop.co.uk/p96-servomorph.html.html
 :-))
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frogman3

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Re: Deans marine HMS Dreadnought - First build!
« Reply #126 on: November 30, 2022, 06:22:58 pm »

HI I have two of these servo morphs in my tiger an they are good as one works my tigers gun turrests an they are speed ajustable so very good from components shop well worth it an they are not very big
 :-))
chrisb
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Simmerit

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Re: Deans marine HMS Dreadnought - First build!
« Reply #127 on: November 30, 2022, 07:18:37 pm »

For what its worth, I just checked on the M600 motors specifications and I would counsel they may be a little powerful and current hungry for what you need - 15,000 RPM at 3.4 amps so with four you will be pulling about 13.6 amps in all, which in my experience seems on the high side for a model of Dreadnought.


I checked RD site and they do a M500 which would be at 6,000 rpm and pulling 1.6amps so four would pull 6.4 amps or less than half. Its very surprising how little energy it takes to actually move a model like Dreadnought, when compared to say a similar length tug which has a much fuller form. High revs are really not needed.


Cheers




Geoff



I ordered 550s and the lad at Deans Marine wrote to me and said I should go for the 600s, so I took the advice :(( . I guess I'll have to get some gearing on them?
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Simmerit

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Re: Deans marine HMS Dreadnought - First build!
« Reply #128 on: November 30, 2022, 07:20:08 pm »

Just on the matter of training and elevating the main guns, you'll need to slow any movement down a lot if you use servos so you'll need the little units (servo morphs) such as these https://www.componentshop.co.uk/p96-servomorph.html.html
 :-))


Thanks Tony - will take a look.  I'm desperate to get started but am about to move yet more furniture around - new carpets tomoz......
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Geoff

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Re: Deans marine HMS Dreadnought - First build!
« Reply #129 on: December 01, 2022, 12:30:09 pm »

Deans are very user friendly and may do a swop if they are unused, just say in hindsight the four of them may be too powerful for your needs. Ron's a very friendly and helpful guy.


Lots of people assume because its a battleship it will need enormous amounts of power to move it which just isn't the case.


By changing props you can also improve speed, duration and current consumption but its a bit hit and miss and not cheap with four at a time. If you model goes a little slow swap 3 blade for 4 blade or increase the prop diameter by say 5mm as it makes a surprising difference.


Please don't worry too much as model boats are very forgiving.


A question for Nick - what motors do you use in your Invincible?


Cheers


Geoff
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Simmerit

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Re: Deans marine HMS Dreadnought - First build!
« Reply #130 on: December 01, 2022, 01:06:30 pm »

Deans are very user friendly and may do a swop if they are unused, just say in hindsight the four of them may be too powerful for your needs. Ron's a very friendly and helpful guy.


Lots of people assume because its a battleship it will need enormous amounts of power to move it which just isn't the case.


By changing props you can also improve speed, duration and current consumption but its a bit hit and miss and not cheap with four at a time. If you model goes a little slow swap 3 blade for 4 blade or increase the prop diameter by say 5mm as it makes a surprising difference.


Please don't worry too much as model boats are very forgiving.


A question for Nick - what motors do you use in your Invincible?


Cheers


Geoff


Thanks Geoff - Iíve just pinged them on email.  Hopefully they will swap them.


Si
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Simmerit

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Re: Deans marine HMS Dreadnought - First build!
« Reply #131 on: December 01, 2022, 01:15:32 pm »

Erm the response



Dear Sir
It may be that we have a rough idea what we are talking about ?

or the "experts" who have never built a model. ?

The propellers on Dreadnought are small   ( as on the full size ship, direct drive )  so you need higher rpm, less load so lower amperage.  600 motors on 6 volts will give you 4500 -5000 about perfect ?
but send them back if you wish and pay for the return postage.


 Regards
 Deans Marine
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raflaunches

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Re: Deans marine HMS Dreadnought - First build!
« Reply #132 on: December 01, 2022, 01:17:55 pm »



A question for Nick - what motors do you use in your Invincible?


Cheers


Geoff


Sorry Iíve been quiet for a while, Iíve had a few problems over the last three/four months involving work/injuries/car issues which have taken up the majority of my time recovering from work and the knee/foot injury, and the car decided to massively fail itís MOT and taken a while to fix.
In Invincible I used car heater motors like yourself driving the outer shafts via a belt pulley system.
On Glorious I think Iím using four 600 motors driving one per shaft- Iíll have to have a look again as Iíve not touched the model for a couple of months. Back on to modelling boats-wise now that things have dramatically improved  :-))
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Backerther

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Re: Deans marine HMS Dreadnought - First build!
« Reply #133 on: December 02, 2022, 08:45:49 am »

The followings are merely my personal opinion based upon my experience to build and operate RC model ships and boats and would not be necessarily suitable in the 1/96 Dreadnought.
The model ship data between my 1/96 HMS Fencer and 1/96 Dreadnought by Deans Marine are so near in terms of length and weight, such as 162cm(Fencer) against 165cm and weight is nearly the same...except the beams 9cm wider with the Fencer. While The Dreadnought is clearly much slimmer than The Fencer and this I think is very important to sail, needless to say.!
By the way, my Fencer is driven by a single and tremendously old Johnson 600 series motor with 60mm dia props and a 12V sealed battery.
The motor is far larger than Mabuchi 540 class motor as seen in the pics below.
Sailing of my Fencer is as seen in the following video and I think it fundamentally OK, BUT seems a bit faster for a scale model escort carrier even at this speed in the video... :embarrassed:
I got the Fencer to operate at 1/4 throttle at the fastest in the video while I feel idling level of throttle might be better for a scale realism in movement on the water.....In other words, idling throttle level of sailing might be sufficient for this warship in my impression currently. :embarrassed: :D
Next sailing is supposed to carry out next spring with a 6V 2.3A sealed battery which I think is sufficient to enjoy both scale speed and run time as well.

Getting back to 1/96 Dreadnought, the hull is much slenderer than the Fencer, and if the weight should be expected nearly the same level, ...
I PERESONALLY think and imagine as a conclusion that 4 pieces of around 540 class motors brushed at the largest and 6-7.2 V battery will do a nice and magnificent sailing performance on the water depending on the props as a scale model warship like the Dreadnought. :-)) :-)) :-))   IF I were you,I would possibly select this configuration as the first trial. %)
Wishing you a best result for a magnificent RC sailing model warship.!!!! :-)) :-)) :-))

1/2;Johnson 600 series motors I got in 2007.   Small one is Mabuchi 540 SH.
3; a Johnson 600 series motor installed in the hull which motor looks so small for the whole hull but soooo powerful actually. O0 :D :-))    too fast for a scale model warship even at very low revolutions with 12 V battery by a little stick work. {-) {:-{ :embarrassed:
4; 60mm dia screw

I think that a large-scale model ship like the 1/96 Dreadnought be better if sailed magnificently at low speed on the water. :-))
 
https://www.youtube.com/watch?v=4f-fI3S6f1E
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Rob47

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Re: Deans marine HMS Dreadnought - First build!
« Reply #134 on: December 02, 2022, 10:20:07 pm »

Just on the matter of training and elevating the main guns, you'll need to slow any movement down a lot if you use servos so you'll need the little units (servo morphs) such as these https://www.componentshop.co.uk/p96-servomorph.html.html
 :-))
not using them as servo is proportional so I get the rate I want as per the 1-1 version unless the servo morph can be controlled as proportional then you are stuck with unrealistic speed unless your representing a slow plodding turret
Bob
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Simmerit

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Re: Deans marine HMS Dreadnought - First build!
« Reply #135 on: December 11, 2022, 07:50:14 pm »

I erm seem to have cornered the market on these O0 . I was sure it said block of 4 when I ordered two packs!!


Hopefully my silicone cable will come this week so I can make a start over the Christmas break. 



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Colin Bishop

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Re: Deans marine HMS Dreadnought - First build!
« Reply #136 on: March 13, 2023, 07:14:52 pm »

All seems to have gone quiet on this build - is any progress being made?

Colin
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ballastanksian

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Re: Deans marine HMS Dreadnought - First build!
« Reply #137 on: August 25, 2023, 04:12:18 pm »

Hi Simmerit, This the demo board I took to Blackpool to show common installations found in model boats.


Stan.


I've just seen this Stan. This is genius!
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Stan

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Re: Deans marine HMS Dreadnought - First build!
« Reply #138 on: August 25, 2023, 05:12:00 pm »

This one? Will be at Blackpool this year.
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