Topic: HMS Brocklesby semi scratch build (Read 189513 times)

Jerry C · « **Reply #275 on:** February 15, 2016, 06:56:21 pm »

Reference the big drum. I served in HMS Middleton for one of my training months many moons ago. The drum held the buoyant magnetic influence sweep loop. I think, may be wrong but she also had a "pulse generator" driven by a three bank Deltic Diesel engine which powers the loop. I found this on tinter web---

The vessels were originally fitted with minesweeping systems that required the vessels to enter potential minefields in order to deploy them. The minesweeping systems fitted were the non-magnetic wire sweep mk8 (WS

, which was streamed either as a single ship Oropesa or as a team sweep, and the combined influence sweep, which combined a minesweeping system acoustic mk1 (MSSA 1) and a magnetic sweep mk14 buoyant loop (MS 14).

The towed loop of the Hunt Class vessels takes a significant time to deploy and also restricts the movement and manoeuvrability of the ship. The sweep systems have been removed but can be reinstalled at 30 days' notice. Sweep systems have been used by the Royal Navy for 100 years and the final deployment of sweep gear by the Royal Navy was carried out in October 2005 off the coast of the Isle of Wight by HMS Ledbury (M30).
Jerry.

radiojoe · « **Reply #276 on:** February 16, 2016, 04:54:42 pm »

I thought I would make one of the mezzanine supports to test my solution of making the whole mezzanine deck removable and leave the side panels fixed, it should work ok with the pins having a taper to make location of all of them easier, the plan is once all five supports are in place I'll add all the cross members in situ and bond the mezzanine deck on, then hopefully I should be able to carefully remove the structure.

Capt Podge · « **Reply #277 on:** February 16, 2016, 05:01:36 pm »

That's a neat looking solution you have there Joe - as long as the tapered pins are set absolutely level, it should work.

Regards,

Ray.

radiojoe · « **Reply #278 on:** February 16, 2016, 05:43:20 pm »

Yes I think you're right there Ray, the structure will have to be eased off, there are also six inboard supports I'll fix these to the structure and they'll just rest on the aft deck so it will just be the pins around the out side to locate,.
After painting the mezzanine will only be removed for occasional dusting etc. I don't know about you guys but my boats seem to attract dust like magnets.

Capt Podge · « **Reply #279 on:** February 16, 2016, 05:50:51 pm »

Quote from: radiojoe on February 16, 2016, 05:43:20 pm

I don't know about you guys but my boats seem to attract dust like magnets.

If there was a market for Dust and Garden Weeds I'd be a wealthy man

Regards,

Ray.

ballastanksian · « **Reply #280 on:** February 16, 2016, 08:42:39 pm »

A little slant in the brass pins should not be a problem as the plastic will flex a little, but like everything, the point at which flex becomes break is not one we want to discover unless we are materials analysts!

Dust? GRRRRRRR

Paul Swainson · « **Reply #281 on:** February 17, 2016, 01:03:19 pm »

Yes Joe, due the her size I need the garage empty of the trailer tent to work on her. Plus it gives me a break to do other thinks and look at problems that will come in the summer when the decking goes on. Also the plans for the hunt class look nice and your build will certainly help me out too.

radiojoe · « **Reply #282 on:** February 20, 2016, 04:29:49 pm »

It's taken all week to construct the mezzanine deck/supports, the main thing was to get all the support beams the same height so the deck would be flat, and as I didn't want to see anything holding the structure down I made all the locating pins an interference fit, so once it in place each joint has to be gradually lifted in turn till the whole thing is free, so there's no chance of it moving in the wind, well it has worked out quite well, when I first looked at the drawings this structure looked a bit daunting so I'm pleased it is now done and I can carry on making deck items till the weather gets warmer and dryer for painting.

maggie m · « **Reply #283 on:** February 20, 2016, 04:37:21 pm »

Looking really good, following your build with great interest, George

Capt Podge · « **Reply #284 on:** February 20, 2016, 04:41:59 pm »

That's a magnificent achievement Joe - you must have heaps of patience, and a good level workbench - well done.

Regards,

Ray.

PS - Love the main deck level photo through the mezzanine structure.

Starspider · « **Reply #285 on:** February 20, 2016, 04:54:38 pm »

More excellent work Mr Joe

Norseman · « **Reply #286 on:** February 21, 2016, 12:58:52 pm »

Very practical, I have not seen that done before

tweety777 · « **Reply #287 on:** February 21, 2016, 01:01:59 pm »

Great looking build!!
This is great inspiration for me, you use lots of techniques I want to use on my build as well so it's great reading how to do this.

Greetings Josse

radiojoe · « **Reply #288 on:** February 22, 2016, 04:33:25 pm »

I thought I would do the aft deck bulwarks next as they can be spray painted with the hull and of course easier to bond before painting, the mezzanine joints needed a little fettling to fit over the bulwark capping.

Bob K · « **Reply #289 on:** February 22, 2016, 06:22:04 pm »

Lovely work

On the last photo, the depth of field is incredible for such a close up shot.

SailorGreg · « **Reply #290 on:** February 22, 2016, 10:27:10 pm »

radiojoe · « **Reply #291 on:** February 23, 2016, 05:14:41 pm »

Easy little item today, one of the many roller leads, but the next item is not so easy, it's a three reel winch, again there is only two views plan and aft end, and it's complicated, I've searched the web for a photo of it which would help a lot to get a image in my head so I can try and make it look passable, but no luck so far.

Capt Podge · « **Reply #292 on:** February 23, 2016, 06:04:23 pm »

Joe, I've just started a search and found this - don't know if it'll help, we'll keep trying though...

http://wmunderway.8m.com/gallery14/k138c.JPG

Regards,

Ray.

radiojoe · « **Reply #293 on:** February 23, 2016, 06:28:51 pm »

Thanks Ray, it's certainty along similar lines and gives me a few ideas.

warspite · « **Reply #294 on:** February 23, 2016, 07:10:00 pm »

or if you look for winches used on ships I found these - not sure if the qualify

John W E · « **Reply #295 on:** February 23, 2016, 07:19:33 pm »

Hi Joe, is this any help
john

radiojoe · « **Reply #296 on:** February 23, 2016, 07:58:16 pm »

Thanks for the input guys, I have just found an image of the actual winch all be it a thumbnail, it's made by Parkburn marine handling systems, I think it's just big enough to help. The one on the old sweeper photo looks very similar.

ballastanksian · « **Reply #297 on:** February 23, 2016, 08:45:59 pm »

That will be hugely helpful Joe. I have worked with similar before now when designing AFVs, Trucks etc.

I love those bulwarks and the mezzanine is very very tidy.

SailorGreg · « **Reply #298 on:** February 24, 2016, 07:32:11 am »

That picture of Fittleton is very sad. A good friend of mine was on her when she was rolled over by HMS Mermaid (although I didn't know him then). He still relates the experience now and then. Not something you forget easily I imagine.

Sorry for the sombre interlude Joe. I'm getting ever more impressed with your build - can't wait to see her!

Greg

T888 · « **Reply #299 on:** February 24, 2016, 08:08:24 am »

Joe,
Ill send you one of the pictures I have , Ive sent via private email as if I down size for the site you will loose the detail

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Author Topic: HMS Brocklesby semi scratch build (Read 189513 times)