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[T888]

Well production line for the RU locker is under way. As these are quite a complicated shape I can’t mould them with the feet. So these need to add after.

[ballastanksian]

Lovely work as ever Chris.


I like the wee .50cal shields!

[T888]

Thanks Ian,


They are a bit of a pain casting them.

[T888]

Well finished the RU Lockers and they have all been fitted.


Now I need to move on to the Bushmaster gun mounts.

[ballastanksian]

One more job done!

[T888]

Hi Derek,


Attached are a couple of photos showing we’re the engine hatch are( I believe)

[derekwarner]

Dave....

This quick changeout capability for the GE LM 2500 engines [for FFG's] was one of the elements in the case put forward by Navy to the US Congress for the $ grant to proceed with the Class build

The Arleigh's have x 4 of the same GE LM2500 series engines [same frame {box size} engine] as the FFG's but with higher kW power burner anciliaries

So from this I assume US Navy Design would not change any of the modular box frame rail size for engine changeout for the Arleigh Class

I see your feint red lines for the hatches ...I am sure the engine box could exit the superstructure, vertically  on the rails, as long is were from that same envelope box size

When you mentioned the RN & a Type 42, I understand they are powered by a RR Olympus gas turbine [edit....this is incorrect.... and a smaller?? RR gas turbine, together a diesel.. not sure]. The was also a 20/20 report that suggested the Type 42 should have incorporated two identical Olympus turbines, over the penny pinching , but lower-powered second smaller RR turbine


Derek

[T888]

Derek,


Your correct they have not changed the frame size, they have even kept the same frame size on the DDG 1001.




I did fine the RN engine change out was done in July 1982 on HMS Exeter when she was along side the support ship. It toke three days.

[T888]

Well I’ve bitten the bullet and made a started on the Bushmaster gun mounts. After doing a lot of trawling the web I’ve found that USS Roosevelt post 2014 she had the upgraded M242 chain gun mount installed, so I’ve decided to make this version as my model is built as she was in 2020.

[warspite]

Is that the head of GORT on the mount, a back up if the gun runs out of ammo 

[T888]

Na, it’s Lost in Spaces Robby the robot Girl friend on a cruise 




Or it’s a big camera to help the USN to identify Friend or foe

[warspite]

If it was a camera,  the lens points backwards - accountable deniability 

[T888]

    

[T888]

Base and gun made these parts will be casted and the other detailing like the laser optical sight will be add later.

[warspite]

WOW 

[T888]

Thanks Warspite,


I’ll post some more pictures of the fittings work so far later.

[T888]

Progress so far, still need to make the laser sights.

[warspite]

I noticed the danger area is a little small on the actual vessel, as the barrel rotating at speed would seriously hurt someone if it swung round when especially depressed 

[derekwarner]

So the arc of fire for the Bushman mount is probably 180 degrees included angle, running parallel with the line of the hull

The zone arc marked on the deck as Danger Area is also the non-pointing zone where the barrel cannot enter or be extended [in operatioinal use]...so the Danger Area is only a Danger when the mount is in manual/maintenance control, or re-ammunitioning mode, where the mount can be driver approx 45 degrees inboard into the buffer on either side

The configuration MOD Class shown here, is an unmanned mount, controlled via closed-circuit video to a remote operator station. the only time human intervention is required is to reload a cartridge box of bullets [or clearing a jam ] The seeing eyed dome on the top even has nighttime target recognition without any external light source projected....a cousin to darklight viewing goggles 

The Bushmaster mountings for Naval [marine] applications have certain similarities or design features to the CIWS mountings


[I am not sure why the 2 x [expanded mesh] maintenance stands mounted as withdrawn upwards are mounted at different heights?   

Derek

[T888]

Derek, Warspite
The mesh plateform are for manual operation and maintenance.Also you can see the manual trigger and recoil rests are folded on the top of the gun.


I agree the red danger zone could be when the mount is in manual.

[warspite]

My comment was in the event of a major malfunction if someone one stood by the edge of the red zone at the hand rail and the thing suddenly came to life and swung around erratically - hence MAJOR malfunction  , some of us have seen equipment doing spurious things that the program executes for some inexplicable reason 

[T888]

Hi Warspite,


I’ve Looking at the Red lines markings on DDGs and it looks that they are set so the arc of gun barrel is in side the red zone. This is what I’ve reproduced on my model. The first photo I used should the gun mount, seems not to be a DDG (missed named)




I would have assumed that when the gun mount is in operation, safety rules , would be all crew must stand outside of the red line and behind the operator.


I’ve not seen any signage on DDGs saying this mount my train/move with out warring as on RN ships.

[ballastanksian]

Hey Dave, that gun master is great!

[T888]

Thanks Ian,

Currently trying to make the laser sights, I’m on version 5 


How’s your projects coming along?

[frogman3]

HI Dave yes that gun looking good amazes me how you make them so detailed when they so small very well done
chris