Author Topic: U.S.N. Picket Boat No. 1 1864  (Read 4993 times)

Online b.lindsey

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #60 on: October 19, 2019, 04:13:34 PM »
That is looking great John  :ThumbsUp:

Bill

Offline Flyboy Jim

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #61 on: October 19, 2019, 04:38:55 PM »
Coming along nicely John.  :ThumbsUp:

Jim
Sherline 4400 Lathe
Sherline 5400 Mill
"You can do small things on big machines, but you can do small things on small machines".

Online crueby

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #62 on: October 19, 2019, 07:27:25 PM »
Looking great!!

Offline J.L.

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The Rudder Post
« Reply #63 on: October 19, 2019, 07:35:26 PM »
Thanks guys.

This shot gives up a look at a number of things.

First, a 1/8" bearing is placed just behind the last bulkhead #18. In it, a 3/32" rudder post drops down and rests in a notch in the keel extension. I was pleased to see it line up nicely.

Second, you can see the engraved lines on bulkhead #18 for the stern planks.

Lastly, you can see the raceway for the propeller shaft.
« Last Edit: October 21, 2019, 04:09:36 PM by J.L. »

Offline wagnmkr

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #64 on: October 21, 2019, 12:14:29 PM »
You are doing your usual masterful job John. This will be another winner!

Cheers

Tom
I was cut out to be rich ... but ... I was sown up all wrong!

Online mike mott

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #65 on: October 21, 2019, 03:31:29 PM »
The framing looks great John, looking forward to seeing the planking.

Mike
If you can imagine it you can build it

Offline J.L.

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #66 on: October 21, 2019, 08:28:42 PM »
Well Mike, planking.is not one of my strong suits. If this armed vessel didn't have steam and ordinance aboard, I doubt if I'd be building it.

This is not a pretty picture, ::) but it shows the garboard planks starting on each side of the keel. They fit into a rabbet above the false keel strips aded to each side of the main keel.

Offline Flyboy Jim

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #67 on: October 21, 2019, 08:46:00 PM »
Looks like a good start John.

How did the planking go on your Medway Longboat build? Aren't they pre-spiled or something?

Jim
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"You can do small things on big machines, but you can do small things on small machines".

Offline J.L.

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #68 on: October 21, 2019, 09:35:09 PM »
Jim, you are right. All the planks o the Medway longboat were pre-spiled.
That boat was a rebound from attempting to make a Russia brig in 1:64 scale. I just came upon it and jumped at the large scale.
Although the planks on this model are not pre-spiled, the engraved location marks make the build much easier than having to mark out everything by hand with the use of battens,

I'd better get this boat planked quickly or I'll be kicked off this site.  ::)



Offline J.L.

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Doing the "Twist"
« Reply #69 on: October 22, 2019, 02:17:00 PM »
This one is for all of us old dudes who remember "The Twist".

P.S. To keep this thread on MEM theme, you can still see the propeller shaft raceway coming from the steam engine's power takeoff.

Offline Roger B

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #70 on: October 23, 2019, 05:18:04 PM »
Still following along and enjoying your attention to detail  :praise2:  :wine1: You are definitely a model engine maker and I see no problem in keeping this on the forum.

In one of the German model engineering magazines someone is 3D printing a replica of a Wankel model aircraft engine. It will obviously not run, but is it a model engine?
Best regards

Roger

Online crueby

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #71 on: October 23, 2019, 06:06:01 PM »
John, did you have to steam or heat bend the garboard plank to take that twist?

Offline J.L.

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #72 on: October 23, 2019, 09:13:31 PM »
Thanks Roger. I can't answer your question. Sounds interesting though.

Hi Chris,
Thanks for asking. I put the plank in a Mason Jar and poured in boiling water. After 7 minutes, I took the part out of the water and clamped its end to my workbench (extra material was anticipated for the clamp). Then I took my wife's hairdryer and blew hot air onto the plank as I twisted it slowly with a pair of flat nosed parallel pliers.  After a few minutes, the plank was almost dry. There was some spring back but the wood was still quite malleable.

I immediately glued it in place: edge - white glue; bulkhead- thick gel CA.

I probably should be using the brown gap filling glue that has solid content in it. But the hull is going to be filled with a thin coat of filler and sanded. The filler will cover a multitude of sins!  ::)

Online crueby

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Re: U.S.N. Picket Boat No. 1 1864
« Reply #73 on: October 23, 2019, 09:25:12 PM »
Nice! I have used the hot water method, also sometimes used the side of a soldering iron and wetted the area of the wood - this is essentially the same thing that instrument makers do, where they have a alcohol lamp heating a curved copper piece. A long time ago I got a electric bender, basically a soldering iron with a shaped end piece, looks sort of like this one:
https://www.agesofsail.com/ecommerce/am7205-amati-electric-plank-bender.html
By wetting the section of wood, and pulling it onto the hot iron, it locally steams the wood. To get a tighter bend, takes a few applications. I bet Steam Guy Willy still has some of the alcohol lamp versions in a toolbox...

Offline J.L.

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The Last Plank
« Reply #74 on: October 30, 2019, 07:14:49 PM »
Chris, I don't use it often but Amati makes a mechanical plank bender. Its plastic anvil is canted so that when you squeeze the handles the blade scores the underside and the plank begins to bend.

You can't use this device where the inside of the plank is seen though. The score lines would be visable. But it's a great time saver when double planking or the underside is hidden below decks.

There are 13 strakes in this hull. Each strake has between three and four planks.

One plank to go...   :whoohoo: