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Author Topic: Chimaera - My fourth build, the first POF.  (Read 10611 times)

jpdenver

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Chimaera - My fourth build, the first POF.
« on: March 12, 2018, 02:46:26 AM »

Greetings from this side of the pond.

I was going to start this one before now, but the boss insisted on a few
extra jobs around the house. 

So we gutted the kitchen and dining room, and with the help of a VERY GOOD finish
carpenter rebuilt the major part of our first floor.

Then my dear wife (of 42 yrs) insisted I finally clean all the old electronic gear out
of the basement and reorganize my office and space BEFORE I start the next boat.

So - Having started all of these projects on November 1, here it is March 11 - and I am
finally able to start.


I found this kit last year.  It was from Marvon Models (From the UK) and was produced
before the age of laser cutters.  Somewhere around 2003.  My kit was number 40.
If any one else has built one of these I would appreciate hearing from them.

Here are some pics of the kit pieces and parts.


Regards,
Jim




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Re: Chimaera - My fourth build, the first POF.
« Reply #1 on: March 12, 2018, 06:44:51 AM »

That looks like a very nice subject.  :-))
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #2 on: March 13, 2018, 02:58:41 AM »

So - The first steps:

1. Get correct sized copies of the drawings made by a professional Blue-Print Copy Service.
2. Organize the parts in groups that match the order they are in the manual.
3. Build a Keel Board to hold things upright for now.
4. One of my fellow boat builders here in Denver told me to take the frame plan and
    then manipulate the images to get a symmetrical version for each frame.

Thats all for now

More to come
Thanks for reading,

Jim
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Mark T

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Re: Chimaera - My fourth build, the first POF.
« Reply #3 on: March 13, 2018, 06:35:45 AM »

Now I like that idea Jim - a great way to make a template for each frame  :-))
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Footski

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Re: Chimaera - My fourth build, the first POF.
« Reply #4 on: March 13, 2018, 07:34:22 AM »

Why is a templete of each frame needed, when the frames are included in the kit? Maybe I am missing something, but over complicating matters springs to mind.
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Re: Chimaera - My fourth build, the first POF.
« Reply #5 on: March 13, 2018, 10:54:18 AM »

Why is a templete of each frame needed, when the frames are included in the kit? Maybe I am missing something, but over complicating matters springs to mind.

Looking at the photo of the frames the cutting appears to be rather rough. Looks like they were hand cut on a bandsaw so an accurate template will help in getting them to the right shape.

Jim
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tghsmith

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Re: Chimaera - My fourth build, the first POF.
« Reply #6 on: March 13, 2018, 10:57:14 AM »

archiving a set of plans is always a good idea, confirming precut parts is another.. much easier to correct things before they are assembled.. adding center lines and such is also a plus..
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Re: Chimaera - My fourth build, the first POF.
« Reply #7 on: March 13, 2018, 11:08:12 AM »


I agree with having good frames.  It's my favourite part getting them just right.

May I ask your opinion on their thickness at the edges so that the planking  (or covering) can be attached securely.  I find that if too thin then the pins (or nails) tend to split the edges.

Cheers

ken
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #8 on: March 13, 2018, 05:44:23 PM »

The Frames are 1/4" thick. - 5-layer plywood.
They were precut with a bandsaw, and from the looks of it, they did a careful job.

One of my reasons for going thru the process of verifying each frame for symmetry
is to locate center lines as well as the hull/waterlines on them prior to planking.
It is all part of the:

"Measure twice, confirm, Measure again just to be sure, wait until your hands stop shaking from too much coffee, Then Cut Once"

philosophy of model building.     {-)

I will apply each frame cutout to the face of the frame, using a few points of white glue, and then measure/transfer lines etc.
Once all is done I can start to notch the frames and Keel to suit. 

More to come,
Thanks for reading,

Jim
Denver, Colorado
USA

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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #9 on: March 13, 2018, 10:35:04 PM »

Tacked the frame drawings to the frames.
I will need to do a little prep sanding.

Also epoxied the keel sections together.

More to come -
Jim
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #10 on: March 17, 2018, 04:21:25 AM »

I completed the assembly of the keel.
I also bored the hole for the driveshaft.

Then I spent the time to measure for the
Slots in the keel for the frames.

Lots of measuring.   Cutting still to come.

I also bought a book on POF construction.

Lastly I have chosen the power plant.
Boiler by Maccsteam.  The engine came out
of the previous build where I upgraded to a D10.

Thanks for reading,
More to come.

Jim

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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #11 on: March 22, 2018, 02:41:30 AM »

Cut the notches and started to fit the frames to the keel.

Slow and easy.  Looks like a lot of fiddling needed here.

More to come
Jim
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #12 on: March 23, 2018, 03:09:46 AM »

Got the frames adjusted and started to glue into place.


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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #13 on: March 23, 2018, 03:13:03 AM »

Should I add a brass Keel?

If so - when?

Please let me know what you think.
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derekwarner

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Re: Chimaera - My fourth build, the first POF.
« Reply #14 on: March 23, 2018, 03:23:00 AM »

Jim...interesting question as to when?????????

The following is a build of a Wide a Wake model wooden planked open steam vessel [with a brass strip over the keel plate]

It would not be wasted time to read the spectacular content [all electronic 51 pages] ...it may offer some thoughts..... O0

www.modelenginemaker.com/index.php/topic,2851.60.html

Derek
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Mark T

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Re: Chimaera - My fourth build, the first POF.
« Reply #15 on: March 23, 2018, 05:16:11 AM »

Hi Jim your doing a nice job there. Im going to put a brass strip on my build and Im going to put it on after the planking but before getting the finished surface
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Engineman

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Re: Chimaera - My fourth build, the first POF.
« Reply #16 on: March 24, 2018, 02:01:19 AM »

Jim...interesting question as to when?????????

The following is a build of a Wide a Wake model wooden planked open steam vessel [with a brass strip over the keel plate]

It would not be wasted time to read the spectacular content [all electronic 51 pages] ...it may offer some thoughts..... O0

www.modelenginemaker.com/index.php/topic,2851.60.html

Derek


Really??? Not wasted time??? And even with a brass strip over keel??? Indeed?
You're kidding sailor...CHIMAERA was a steel boat - with stem/sternpost/keel of maximum 2" thick...
Looking for proper wooden stuff...but that for sure would not be CHIMAERA...Some nice steam picket boat could fit.
See VIGILANT by MHB - very similar to the subject - with incorporated steel stem and stern...
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Mark T

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Re: Chimaera - My fourth build, the first POF.
« Reply #17 on: March 24, 2018, 02:25:47 AM »

Hi Engineman the brass strip is purely to protect the bottom of the keel when the model is in the water. Once painted it will not be seen and neither will the wood contruction of the boat
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Engineman

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Re: Chimaera - My fourth build, the first POF.
« Reply #18 on: March 24, 2018, 02:36:15 AM »

...to protect the bottom of the keel when the model is in the water...


Hi Mark,
It is clear - yes, the same is relevant to full scale pratice...but for wooden-built ships.
CHIMAERA - is a steel-built boat - look at pictures above...keel thickness could be clearly seen...
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #19 on: March 24, 2018, 03:21:34 PM »

Engineman,

I guess I am confused.   Are you opposed to adding the brass to the bottom of the keel?

Is it because you feel it will throw it out of scale?

Please elaborate.

Thanks
Jim
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Engineman

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Re: Chimaera - My fourth build, the first POF.
« Reply #20 on: March 24, 2018, 03:50:57 PM »

Hi Jim,
First of all - sorry for getting in like bull into a china shop...
Regretfully I cannot shrink the pictures to post it here - maybe it may have sense to send them to you via e-mail? Then well have a proper background for discussion and better understanding of the things.
In general - Im opposing to the thickness of the stem/keel/sternpost which shall not exceed 2mm in your case. For sure it depends on what youre intending to reproduce - steel hull of the full-scale prototype or something different...
Cheers,
Roman

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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #21 on: March 24, 2018, 06:10:43 PM »

Roman,
Thanks for the insight -
I sent you a PM.

-------------------
The plans and info on the build call for a 3mm keel.
And I am hoping to faithfully reproduce the steel hull.
Although I might not go all the way to the rivets.

So I know the keel depth will require a bit of adjusting (sanding)
if I add the brass to the edge.   I have a piece that is 1/8th x 1/4 inch x 48 inches long.
and I thought to use that.  No decision yet. 

Regards,
Jim Pope
 
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Engineman

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Re: Chimaera - My fourth build, the first POF.
« Reply #22 on: March 24, 2018, 07:54:15 PM »

Jim,
Have sent you a e-mail with some pictures.
Well, probably 1/8 (~3mm) thick brass piece could fit the purpose (i.e. to be used for sternpost/keel/stem). Thou from my opinion - 2mm shall fit better.
As for rivets - their heads typically could be seen for stem/stern joints only, for the rest-flush riveting was typically used.
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jpdenver

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Re: Chimaera - My fourth build, the first POF.
« Reply #23 on: March 24, 2018, 10:37:06 PM »

Roman,
Thanks for the pics.  I understand what you are saying.

I tossed around the concept of making this build a "wooden hull" -
then I figured out that the building instructions and materials are
for a Painted "Steel hull" and infact the Bow and stern are carved from solid
balsa wood. -

Just goes to show how far the kits have evolved. 

Regards,
Jim
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Re: Chimaera - My fourth build, the first POF.
« Reply #24 on: March 25, 2018, 04:58:17 PM »


Hi Jim,
It is good to hear that for now were at the same page  :-))   
.
In your message you was a bit complaining about lack of references for the full-scale prototype...
Well, in this regards the CHIMAERA seems to be a very thankful subject - since several tens of this class of steam ships were built, and at least two of those even survived to our days.
One - is mentioned revenue cutter VIGILANT; and the other - SY CAROLA.
SY CAROLA - is very similar in many ways to pilot cutter CHIMAERA.
Will send you some pictures - which are showing the details of CAROLAs steel hull structure and the manner of fitting for the hull plating to the stem and keel pieces.
Thence, my advice will be to cut off completely all the projecting parts of the keel and stem (which are extremely thick) and replace them with ones - to be made of flat brass profile of 2-3mm thick. Sternpost and rudder blade - shall be adjusted accordingly.

Kind rgds,
Roman
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