Topic: Novgorod. A Round Russian Monitor. (Read 18035 times)

785boats · « **Reply #25 on:** January 16, 2021, 06:31:46 am »

I can see why Martin. Interesting video.
Cheers.

ballastanksian · « **Reply #26 on:** January 17, 2021, 06:59:01 pm »

I am going to sound a right know it all here so excuse me for it. The inner two props were three bladed so they did not foul the sea bed or dry dock when being worked on. Other than that, the flat edged blades look great and quite realistic without going to extremes of detail with rivets etc.

How did you balance the props?

785boats · « **Reply #27 on:** January 18, 2021, 07:37:38 am »

Hi ballastanksian.
I've been searching for images with the inner two props as three blade props. But all I can find is pictures & drawings with all props having 4 blades.
But I do note that the props reduce in size from the outside ones to the inner ones in some drawings. But in the photo below, they are all the same size.
I know the boat went through a few developement changes over some years. But I can't find any different images of the props. Would love to see some if you have any.
I would probably still go with the 4 blades because I have them now, but would still love to see the different setup.

I haven't balanced the props yet, but I will do it the same way that I do all my race props. Using a balancer and some files and emery paper.
Just take some weight off the heavy blades with the files on the convex side, and then use varying grits of emery down to # 400. Important when the prop is spinning at over 30,000rpm.
Here's the balancer. I also do EDF blades too. Over 47,000 on the one in my Spirit of Australia model.

Geoff · « **Reply #28 on:** January 18, 2021, 12:34:18 pm »

I seem to recall reading somewhere that with the real ship they had controllability issues so tried various prop sizes which may explain the differences between plans and pictures.

Cheers

Geoff

ballastanksian · « **Reply #29 on:** January 18, 2021, 12:53:06 pm »

My apologies, yes I think there were upgrades and replacements through her life so differing bladed props may have been short lived.

It's your model, go with what you are happy with

T888 · « **Reply #30 on:** January 18, 2021, 04:53:51 pm »

This is really unusual ship, will be very interested in seeing how it sails when you get to that point.

Martin (Admin) · « **Reply #31 on:** January 18, 2021, 07:46:18 pm »

One seen at a show.....

Martin (Admin) · « **Reply #32 on:** January 18, 2021, 07:46:31 pm »

785boats · « **Reply #33 on:** January 19, 2021, 06:00:23 pm »

Nice one Martin.
I like the chains for the steering.
Another different deck layout. Must be an early version of the ship.
Cheers.
Paul.

tonyH · « **Reply #34 on:** January 20, 2021, 11:14:13 am »

There's a contemporary report on the Russian cyclids included in a couple of 1876 issues of The Engineer magazine. I've downloaded them but can't post on here because the file is about 25 Mb so if anyone wants a copy let me have an e-mail address via pm.
Tony

Martin (Admin) · « **Reply #35 on:** January 20, 2021, 01:48:50 pm »

Quote from: tonyH on January 20, 2021, 11:14:13 am

There's a contemporary report on the Russian cyclids included in a couple of 1876 issues of The Engineer magazine. I've downloaded them but can't post on here because the file is about 25 Mb so if anyone wants a copy let me have an e-mail address via pm.
Tony

If you would like to email them to me, I'll find a way of uploading them.

martin@modelboatmayhem.co.uk

tonyH · « **Reply #36 on:** January 20, 2021, 04:28:09 pm »

Pic from1876

Martin (Admin) · « **Reply #37 on:** January 20, 2021, 05:05:31 pm »

Quote from: tonyH on January 20, 2021, 11:14:13 am

There's a contemporary report on the Russian cyclids included in a couple of 1876 issues of The Engineer magazine. I've downloaded them but can't post on here because the file is about 25 Mb so if anyone wants a copy let me have an e-mail address via pm.
Tony

Martin (Admin) · « **Reply #38 on:** January 20, 2021, 05:14:09 pm »

785boats · « **Reply #39 on:** January 20, 2021, 06:06:33 pm »

Wow!
Some brilliant information there. I'll have to make some time to wade through all that.
Thanks Tony/Martin.

tonyH · « **Reply #40 on:** January 20, 2021, 06:07:50 pm »

Many thanks Martin,
The relevant pages are 75,76 and 77 from post at 5.14 ( Reply #39 ) and 93,94 and 95 from the posting at 5.05 ( Reply #38 ).

I hope you find it interesting and in context of the period!

785boats · « **Reply #41 on:** January 25, 2021, 11:27:48 pm »

I found it very interesting.
I finally had some time to add the deck ring to the hull. And also spread on some filler and sand it all back.
Still a few blemishes to fill and then I can add the epoxy glass work. Hopefully today.
Cheers.

785boats · « **Reply #42 on:** January 31, 2021, 04:20:09 am »

A successfull mornings work today I think.
I decided to mock up the deck & the barbette for the guns.

Firstly I decided on the curvature of the deck from various drawings & photos. Couldn't find any exact measurements so, I go by the caveat that if it looks right, it is right.
The diameter of the barbett is listed in the specs of the ship so that was easy to scale out to the 1:48 scale that I am using.

I cut 16 deck formers to be arranged in the spider web arrangement around the barbette.

I cut a couple of discs of 3mm balsa, at 180mm diameter, for templates, And then a strip of 1/16" aircraft ply to wrap around them to form the wall.
I pre-bent the ply around a 4" post in my workshop that holds up the floor above.
No soaking, no amonia, no heat. Just the Uri Geller touch, and mind control.
I always think of the English Wheel when I do this.

So this is where I found out that the ring around the top of the hull is not exactly circular, as I had to trim the notches out on more than a few of the frames to allow the whole thing to sit down flush.
No biggie. An easy fix.
Here are the compulsory visuals.

Cheers.
Paul.

785boats · « **Reply #43 on:** February 02, 2021, 06:06:20 am »

A little bit more done to the deck.
I added some cross braces of 5mm balsa to strengthen things up a bit. And to get a good curve & frame for the skin to adhere to.
Now it does look like a spiders webb
I'll lay a skin of 1/16" balsa and then plank it. I have some veneer that I can cut into strips.
I had a couple of sheets of the balsa so I bought a few more and cut some pieces ready for final fitting.
Cheers.

Geoff · « **Reply #44 on:** February 02, 2021, 03:43:32 pm »

Your sure your not building a flying saucer!

Its looking good!

Cheers

Geoff

785boats · « **Reply #45 on:** February 03, 2021, 10:11:39 pm »

Thanks Geoff.
It certainly looks like a flying saucer. Bu no. Definitely a watercraft.

785boats · « **Reply #46 on:** February 04, 2021, 06:29:07 am »

I'm on night shift again for a few days, and I got home from work this morning and decided to put a layer of fiberglass on the hull.
I mixed up enough resin to give the underside of the deck a coat too, to seal the wood and joints.
When the hull is fully cured, I'll give it a sand and apply a finishing coat, and will give the topside of the deck a coat of resin only, to seal and make ready for the planking.
That will just leave the inside of the hull to brush on a coat to seal all the wood in there.

warspite · « **Reply #47 on:** February 04, 2021, 12:00:10 pm »

Thought you might have cut triangles rather than plank one side to the other, or did you have insufficient and this layer is hidden under another layer?

785boats · « **Reply #48 on:** February 05, 2021, 03:07:30 am »

Hi there Warspite.
Triangle plating like a pie chart are shown in some images. Also rectangular plates running lengthwise from stem to stern in others.There are even some images showing planking in the piechart section arrangement too.
But the one I like is the full planking from stem to stern. It is also kow the little kit I originaly bought to use as a guide, is set out. See the first photo in my first post.
So that is the version that appeals to me the most. It also has the planking on top of the main cabin too, as do some other images. And yet there are images with planking on the deck but not on the main cabin.I'm just assuming that the planked deck is the eairlier version of the ship.
Funny thing is, that some show the two side bridges, and some don't. Different developements as the years passed I guess.
I'm also thinking that some of the images are of the Popov, which was a different (later) boat to the Novgorod.
I'm sure the planking will drive me nuts & I will probably wish I had taken your advice. Time will tell on that one.
Here's a couple of pics showing some different layouts.

Geoff · « **Reply #49 on:** February 05, 2021, 10:51:54 am »

Very interesting. For the deck planking a method I use is to lay a bundle of planks on their edge in a jig just to hold them and then use black electricians tape pushed onto the edge and cut off. Pull all the planks as a block from the jig turn over and slice between each plank (I have a circular cutter like a pizza wheel). You will end up with multiple planks with a self adhesive black thin strip along one edge. The strip is black all the way through. After planking (I use resin w glue in the blue bottle) use a Stanley knife blade as a scraper to smooth the deck off to a very smooth satin finish and clear varnish accordingly.

Most important is the margin planks which are fitted first and are typically 1.5 times the width of an ordinary plank so if you joggle the planks you cut some of the margin plank away leaving it about the width of a single plank. Have a look at Invincible for an example.

Keep up the good and interesting work.

Cheers

Geoff

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Author Topic: Novgorod. A Round Russian Monitor. (Read 18035 times)