Vic Smeed’s Silver Mist

[Colin BishopModerator @colinbishop34627]

Bob, I have seen models that do just that. You do need a pump (or pumps) that can be run continuously though and the model must be stable when pumped out.

12v submersible bilge pumps for yachts are compact and pretty cheap but not reversible so if you have an open valve to let the water in when launching the boat you need some way of closing the valve when you want to pump the water out to avoid circulating the pond! No doubt a suitable linkage could be worked out.

Bilge pumps are designed to shift a lot of water so the process would be quite quick.

A big model could accommodate one of these pumps which could be powered off the main batteries.

They come in all sizes, e.g.:

**LINK**

**LINK**

Colin

[ashley needhamParticipant @ashleyneedham69188]

Bob, peruse my album, loads pictures of the Nelson and Glorious. Ashley

[Bob Abell 2Participant @bobabell2]

It may seem a daft question, Ashley, but……..How do I find your album?

Without having to wade through the heap?

Bob

[Paul TParticipant @pault84577]

[ashley needhamParticipant @ashleyneedham69188]

Bob. Easy. Just under my handsome head it says "xxx forum posts" and then "214 photos". Click on the "214 photos" and then "view album".

You know what HMS Nelson looks like, and the Glorious…grey..battleshippy sort of thing. Helpully I have labelled all the pictures, mostly.

​Ashley

[ChrisBParticipant @chrisb29081]

Just out of historical interest, my great, great, great grandfather, John Ray, took out the original patent for water Ballasting in single screw Colliers, which he ran from Sunderland to London. On the way down the tubes were full of coal as ballast, on arrival at London they were emptied by small boys with shovels, then flooded for the return journey. Before this the empty boats were filled with hand dug clay/mud from the river bank for the return trip, this took extra time and often meant waiting for the next tide, which meant lost time, lost revenue!

Chris

Edited By ChrisB on 11/04/2016 17:58:24

[Bob Abell 2Participant @bobabell2]

Thank you, Ashley

Apologies for being so ignorant……..Not had need to do it before

Have seen your Nelson and Glorious, but they don't look like planks?

Do you get air trapped in the skirts?

Where have you housed the gear?

Bob

[Bob Abell 2Participant @bobabell2]

My intrepid progress chaser Kevin G is calling for a WIP report again

Well, there is progress, Captain, but not as we know it!

It`s called…..Organised chaos!

At the moment, I`m investigating the hull curvature, part way down the hull

Believe it or not……..It`s working out OK

Made a few mods to Vic`s design………Making a strong jointed structure at the stern

And as you can see……I`ve got round the bend with a sample plank

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob. The Glorious was built after a discussion at the pond regarding the use of a plank as the base for a model, as someone had a very old cruiser model that had a plank for the base and it was heavy and a bit tender on the water..

I cut a shape out of a plank and put sides on it (this is where the hardboard comes in) and found it was not stable at all. The plank has too much buoyancy. I cut a rectangle out of the plank to house the battery (6v SLA) and plated this over with hardboard and it was as stable as anything. Top added, and the Nelson was built along the same principle

​You could call bread and butter construction a hollowed out plank I suppose??
​Ashley

[Bob Abell 2Participant @bobabell2]

Thank you, Ashley

You sure build `em simple

But the bottom line is……………..That they work!

What`s on the stocks now?………..Or is that a secret?

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob, secret I am afraid, but have sent you a mail… Ashley

[Bob Abell 2Participant @bobabell2]

Many thanks Ashley

Most impressed………Email sent

Bob

[Paul TParticipant @pault84577]

Ashley

A secret project?

How very James Bond, no doubt it is a floating DB7 with firing missiles and an ejector seat.

Or it could be that jet powered Q Boat that Pierce Brosnan piloted through London

.

Its amazing what can be achieved with hardboard, string and sealing wax.

Paul

[Dave MilbournParticipant @davemilbourn48782]

Paul

There was a model of this James Bond boat at the last Warwick show. I don't think it was made of those materials, though…

DM

[Paul TParticipant @pault84577]

Dave

If it wasn't made of hardboard, string and sealing wax it can't have been Ashleys.

Perhaps Ash has something really left field like the Epcot Sphere powered by elastic bands and chewing gum.

Paul

[Diede van AbsParticipant @diedevanabs87670]

Q-boat was already done, RC and all…. No novelty in that. No doubt mr. Needham will have something quite differently up his sleeve.

[Paul TParticipant @pault84577]

Yes Diede Ashley does tend to go for the weird, odd, mad, different type of project and it is very difficult to anticipate exactly what will be tied to the roof of his little car the next time he goes to Bushy Park.

Sorry Bob for jumping all over your thread.

[Bob Abell 2Participant @bobabell2]

No problem, Dave, Diede and Paul, you help to lighten up all this high tech talk!

After a few pages of fun and games, with the kids, we can get back on the job?

The model is being built as Vic intended, viz…….the right way up and it is causing a few headaches with accuracy of build, since we don`t have a flat datum face to rest on and trust

The bottom face of the keel has been left square with the bulkheads and will be ploughed off later

I`ve made a top fixture plank, to locate the tops of the bulkheads, but still need to set the bulkheads athwarts!

Probably an incorrect nautical term, but it sounds about right to me!

Bob

Edited By Bob Abell on 13/04/2016 16:38:53

[Ian GardnerParticipant @iangardner62867]

I expect when you have that nice wide inwhale in things will stiffen up, and it might be worth letting a stringer into the frames at the turn of the bilge- or are those holes for dowels to make the structure more rigid? I can't tell from that angle if they are in line.

Ian

[Bob Abell 2Participant @bobabell2]

Thank you, Paul T for your fixture suggestion, but I think I`ve got it sorted now

Also, can I just say this……Congratulations on your recent accreditation by the Royal Institute of Naval Architects (RNIA)

Paul won`t like me mentioning this, but he`s worked for it and it deserves mentioning on the Forum

And as a close friend of Paul, I can also reveal, Paul has a Doctorate in Structural Engineering too

So all this high tech stuff, he keeps coming out with……..It`s for real chaps

Well done, Paul

Your old mate……Bob

[Paul TParticipant @pault84577]

Thank you Bob  now I am embarrassed it wasn't a secret as I was in the process of telling a few close friends but I didn't expect a formal announcement.

The accreditation involved a few sections of B65 BEng that I hadn't done before and it was fairly straightforward but I only did it to prove to myself that my brain hadn't turned to mush.

Paul

 

Edited By Paul T on 13/04/2016 17:57:19

[Dave MilbournParticipant @davemilbourn48782]

So all this high tech stuff, he keeps coming out with……..It`s for real chaps

You think so?

PT
We are not worthy, Dr Dude. Do you get to meet The Queen?

DM (Also a real chap).

And now back to Bob The Builder…..

[Bob Abell 2Participant @bobabell2]

Thank you Ian

The inwhales will be built up from easily bent 5 mm sq planks and that will be very strong

But at the moment we are a long way off glueing anything, until we are sure all is well

Paul

Don`t forget the brown envelope!

Bob

[Bob Abell 2Participant @bobabell2]

Latest state of play

Got the structure finally sorted out and ready for glueing

It was an interesting challenge and great fun

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob. Looking good, and well done for following Vic`s right-way-up method.

​I will ignore the usual jibes but just say that lately I have been leaning towards MDF for certain aspects of construction

Ashley

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