Author Topic: COLUMBINE - The Boat  (Read 14105 times)

Offline gbritnell

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Re: COLUMBINE - The Boat
« Reply #105 on: September 19, 2017, 12:40:32 PM »
Hi Robert,
Outstanding looking work on your build. I have been quietly following along.
gbritnell
Talent unshared is talent wasted.

Offline Robert Hornby

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Re: COLUMBINE - The Boat
« Reply #106 on: November 11, 2017, 11:15:24 PM »
The hull is finally painted. The red is a little too red but the colour swatch showed it more like the old Red Lead paint colour. However when it is in the water not too much red will be visible. Next step is fitting out of the deck. I am undecided between Teak or Tasmanian Oak.



Robert
Age and treachery will always overcome youth and skill

Online b.lindsey

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Re: COLUMBINE - The Boat
« Reply #107 on: November 12, 2017, 12:19:25 AM »
Wow, that is beautiful Robert!! What a nice finish to the hull too. Just amazing.

Bill

Offline Dave Otto

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Re: COLUMBINE - The Boat
« Reply #108 on: November 12, 2017, 02:04:15 AM »
Very nice!

Dave

Offline Pete49

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Re: COLUMBINE - The Boat
« Reply #109 on: November 12, 2017, 03:31:41 AM »
Robert just my 2 bobs worth in regard to the timber. Tassie oak can have nice grain but as you probably know is a eucalypt and lighter than teak but may over time split. Teak is a more durable timber used often in boat building though I assume as its a model it won't live out on the water for any length of time so I woud say go for the teak as the cost of decking won't break the bank and I feel looks better on model boats.
Pete
I used to have a friend.....but the rope broke and he ran away :(

Offline Ramon

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Re: COLUMBINE - The Boat
« Reply #110 on: November 12, 2017, 11:16:50 AM »
That's a very impressive finish you have there Robert, and I love the way you tackled those deck planks and caulking too - a great result.

I have just read your last message and will await your next post

Ramon

Online crueby

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Re: COLUMBINE - The Boat
« Reply #111 on: November 12, 2017, 01:25:59 PM »
Another option for decking is Spanish Cedar - it looks a lot like mahogany when varnished, but is much lighter weight, which is important for the deck on a model boat. I've used it on my full sized sailboat, holds up great and is very good looking.

Offline Robert Hornby

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Re: COLUMBINE - The Boat
« Reply #112 on: November 13, 2017, 12:23:17 AM »
Thank you guys for the thoughts on the deck timbers, I thinks I will be sticking with my original thoughts of using Teak.
With some assistance from Ramon and his Wide A Wake launch i have drawn up a sketch of the steam valve. The extra length of the steam inlet is for the support bracket.



Robert
Age and treachery will always overcome youth and skill

Offline Ramon

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Re: COLUMBINE - The Boat
« Reply #113 on: November 13, 2017, 09:33:22 AM »
Hello Robert - You've nailed it absolutely on the button - that's exactly as I made mine except, I think, the top cover had a spigot for the O ring. You could have sent the drawing as a PDF I think but whatever I can see it now.

The fit does need to be a good one between case and barrel for best results, I assembled mine with tallow as a lubricant if you can get some.

Just noticed the square for the lever to sit on - If you make this a thread instead and tap the lever, then lock it with a locknut  it becomes infinitely positional - certainly a big help when setting up your servo drive to get the opening/closing in just the right place

Keep it coming - not long now eh

Regards - Ramon

Offline Robert Hornby

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Re: COLUMBINE - The Boat
« Reply #114 on: November 14, 2017, 12:19:22 AM »
Thanks Ramon,
I first thought of threading the spigot and may return to that after reading your comments. And I can easily put a groove in the top plate for the O Ring.
Robert
Age and treachery will always overcome youth and skill

Offline 10KPete

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Re: COLUMBINE - The Boat
« Reply #115 on: November 14, 2017, 01:38:15 AM »
Looking good! Are you going to launch it this (your) summer? Can't wait to see that!!

I like that valve... simple.

Pete
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Offline Robert Hornby

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Re: COLUMBINE - The Boat
« Reply #116 on: November 14, 2017, 11:51:10 PM »
Thanks Pete,
There is still quite away to go prior to launching, so no it won't be getting wet this summer. For me it is about the journey rather than the destination. Any way Columbine is now righted and in her dry dock for the commencement of the fitting out. I will be visiting the timber yard tomorrow to check out the Teak. I will make a trial fore-deck out of scrap wood to see how it looks. From the photos of the prototype it seems to have a convex curve to it blending into the side decking which appears to be flat.







Robert
Age and treachery will always overcome youth and skill

Offline derekwarner_decoy

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Re: COLUMBINE - The Boat
« Reply #117 on: November 15, 2017, 04:12:02 AM »
Robert...before you commit to machining the spool O-ring seal diameter & depth cavities, may be best to consider availability

From your cavity [depth] dimensions, a 6-069 Series [5x1.5] O-ring would technically it, however the diametrical dimensions as shown below don't compute

Another downside is that 6-069 Series in Viton elastomer :happyreader: are not readily available  .....

A rank Standard 2-107 Series [5.23x 2.62] would work with a revision to the depth of the cavity....& are readily available in Viton elastomer

Good luck........... Derek
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Offline Robert Hornby

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Re: COLUMBINE - The Boat
« Reply #118 on: November 17, 2017, 05:46:29 AM »
Hi Derek,
I did source the O Rings and sized the valve to suit them. I could not help myself with another picture with the interior re painted and the power module installed.



Robert
Age and treachery will always overcome youth and skill

Offline 10KPete

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Re: COLUMBINE - The Boat
« Reply #119 on: November 17, 2017, 04:25:02 PM »
Sweet!! Looking good, Robert!!

 :cheers:

Pete
Craftsman, Tinkerer, Curious Person.
Retired, finally!
SB 10K lathe, Benchmaster mill. And stuff.