Model Boat Mayhem

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Author Topic: HMS Rodney  (Read 7905 times)

C-3PO

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Re: HMS Rodney
« Reply #50 on: December 18, 2019, 05:10:53 PM »

First of the new guns smoking - yes too much!!

I will scale back the smoke at some point

https://youtu.be/iizzKuy2O0c




https://youtu.be/iizzKuy2O0c

C-3PO
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Dreadnought

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Re: HMS Rodney
« Reply #51 on: December 18, 2019, 06:02:06 PM »

Very Good!!  :-))
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Taranis

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Re: HMS Rodney
« Reply #52 on: December 18, 2019, 06:06:01 PM »

Superb !
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C-3PO

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Re: HMS Rodney
« Reply #53 on: January 26, 2020, 04:00:16 PM »

Pom pom guns being detailed by Peter (Peter Ward)

Whilst Peter continues his magic on the superstructure, I now have the hull back in my domain to fit out with electronic wizardry

C-3PO

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Taranis

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Re: HMS Rodney
« Reply #54 on: January 26, 2020, 06:07:27 PM »

Lovely work  :-)
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Capt Podge

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Re: HMS Rodney
« Reply #55 on: January 26, 2020, 06:25:49 PM »

That paint job really highlights just how good the detail is in the 3D printed parts - looks super  :-))


Regards,
Ray.
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littoralcombat

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Re: HMS Rodney
« Reply #56 on: January 27, 2020, 12:39:26 PM »

Awesome build thread. A member of our Club is now researching for his construction of HMS Rodney in 1/72nd scale, and I am sure he will be very interested in following your progress.
Nige
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C-3PO

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Re: HMS Rodney
« Reply #57 on: February 02, 2020, 09:28:48 PM »

One small step... - the begining of the radio control system for HMS Rodney

and yes I know the degrees are out(!) an easy fix

https://youtu.be/9ISfzF4owk8       



https://youtu.be/9ISfzF4owk8          
 

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T888

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Re: HMS Rodney
« Reply #58 on: February 02, 2020, 09:58:23 PM »

Nice and smooth movement. :-))
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Regards Dave
In Build ..... USS Roosevelt (DDG-80) 1/200 Britannic , on Hold KM Graf Spee ,KM Sharnhost
HS Elli? In Refit HMS Cornwall T22.

C-3PO

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Re: HMS Rodney
« Reply #59 on: February 03, 2020, 04:55:35 PM »

Testing main funnel smoke production - using a whisky bottle tube (850mm)

https://youtu.be/S6VtC3Un9B4



https://youtu.be/S6VtC3Un9B4

C-3PO
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Taranis

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Re: HMS Rodney
« Reply #60 on: February 03, 2020, 06:40:08 PM »

A nice smokey flavour single malt  :-)
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Dreadnought

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Re: HMS Rodney
« Reply #61 on: February 03, 2020, 06:55:38 PM »

And the bonus is you get to enjoy the whisk first lol  :-)) {-)
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C-3PO

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Re: HMS Rodney
« Reply #62 on: February 22, 2020, 04:16:30 PM »

First stepper strutting it's stuff...

Some formatting/button logic to be resolved but at last some progress

Radio control range from the tablet to the boat is approx 1-1.5km

https://youtu.be/Z_ksz_4wp0w



https://youtu.be/Z_ksz_4wp0w

Regards
C-3P0
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Capt Podge

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Re: HMS Rodney
« Reply #63 on: February 22, 2020, 04:32:14 PM »

Very, very impressive C-3PO. You've certainly got a good skill there - love it  O0 :-))


Regards,
Ray.
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C-3PO

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Re: HMS Rodney
« Reply #64 on: February 24, 2020, 03:32:18 PM »

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Colin Bishop

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Re: HMS Rodney
« Reply #65 on: February 24, 2020, 04:52:36 PM »

Very impressive! However, when it comes to elevating, how will you deal wit the extra complexity of X turret to prevent the muzzles hitting the gunhouse overhang of B turret if elevated at certain angles? This was an issue in the original vessel.

Colin
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C-3PO

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Re: HMS Rodney
« Reply #66 on: February 24, 2020, 07:19:28 PM »

Hi Colin,

Yes a very good point - the solution however is easy. The system knows the position of the stepper motors at any point so it's just applying some logic to stop the collision/prevent movement.

My biggest problem at the moment is getting 9 vertical sliders to appear on the control panel - they don't want to play ball in their current form so may be back to the drawing board.

I wish I was more skilled at using html/css/javascript....

C-3PO

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Taranis

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Re: HMS Rodney
« Reply #67 on: February 24, 2020, 07:26:17 PM »

Very clever  8) , way over my head   %%
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derekwarner

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Re: HMS Rodney
« Reply #68 on: February 24, 2020, 08:57:15 PM »

'applying some logic to stop the collision/prevent movement' :-))  .....you will find it easy C-3P0 O0


[/size][size=78%]J[/size][/size]ust call them non-pointing and non firing zone premissives  [size=78%]


PS......the train speed is impressive


Derek
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Derek Warner

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C-3PO

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Re: HMS Rodney
« Reply #69 on: February 25, 2020, 10:17:40 AM »

Thanks Derek - not sure why my video uploaded to uTube in SD not HD - this makes it difficult to see the acceleration/deacceleration of the stepper motor which gives it a realistic look.

Turret X - Colin's observation prompted me to think further on the matter than my initial thoughts I had while back.

Colin kindly send a link to some information a long time ago which I have been working with - see below.



So my question is if Turret X is in the permissable firing/training range on one side of the ship with the guns elevated and it needs to traverse to the other side of the ship...

Do the guns need to be lowered to traverse under the back lip of Turret B or is it also permissible to leave them elevated so they traverse above Turret B?

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Colin Bishop

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Re: HMS Rodney
« Reply #70 on: February 25, 2020, 10:36:40 AM »

In Peter Hodges' book 'The Big Gun' the following comments are made:

Although the elevating gear was fairly straightforward in A & B turrets and had the usual style of automatic cut off at the limits of elevation and depression, X turret needed most complex safety arrangements. When trained fore and aft its muzzles lay beneath the overhang of B turret so its elevating gear had to include the means of preventing it elevating under the overhang of B, depressing into the overhang of B and training into the overhang of B at the critical elevation.

I assume ‘critical’ means the elevation needed for the range at which the ship was engaging the enemy so if the ship turned the X muzzles could hit B turret unless sufficiently elevated or depressed.

This would also need to take account of the position of B which would presumably be training on the same bearing as X so the position of the overhang and the chances of it obstructing X muzzles would depend on the position of the overhang. Maybe there is a formula in there somewhere!
 
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derekwarner

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Re: HMS Rodney
« Reply #71 on: February 25, 2020, 12:17:51 PM »

Just looking at this on face value, the following scenario could be considered


So for X turret we would consider [irrespective of Port or Stdb]


Train
0 degrees to 60 degrees of Train = Pointing Zone, Non Firing Zone - 60 degrees to 130 degrees of Train = Pointing/Firing Zone

Elevation
0 degrees to 60 degrees of Train = Non Pointing Zone, Non Firing Zone - 60 degrees to 130 degrees of Train = -3/+40 degree of elevation, Pointing/Firing Zone

PS.....


1. I am not sure what significance Note 5 is about
2. Colin, reading the word Critical, I would read it as an expression or word for a degree of elevation or train that is outside the permissibles referenced  as Pointing/non Pointing or and Firing/Non Firing zones
3. We must also remember vessels of this exact vintage had no automatic ordnance trajectory compensation for any change in the vessels direction, speed,  heel, roll or yaw etc
Derek   
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Derek Warner

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C-3PO

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Re: HMS Rodney
« Reply #72 on: February 25, 2020, 12:21:40 PM »

Colin & Derek,

Thank you for info - need to read both posts a few times to see if the fog will clear.

Derek - this was the URL for the info Colin posted a while back

http://www.navweaps.com/Weapons/WNBR_16-45_mk1.php

C-3PO
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C-3PO

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Re: HMS Rodney
« Reply #73 on: February 25, 2020, 01:36:57 PM »

HMS Rodney

Slowly the interface to allow 9 guns to be individually elevated comes together...



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Colin Bishop

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Re: HMS Rodney
« Reply #74 on: February 25, 2020, 01:38:18 PM »

The firing arc for X turret shown in the illustration in Burt's book is 65 degrees forward and 60 degrees aft of abeam.

Colin
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