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Author Topic: Bodgers Class Build - Louis Heloise  (Read 45940 times)

andrewh

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Re: Bodgers Class Build - Louis Heloise
« Reply #100 on: October 07, 2009, 12:59:26 PM »

TT

Sorry, I wasn't clear at all. :((

What I meant was dont do any preparation of the hole , just sew the mast hoop to the sail  with about half a dozen stitches (loose)  - couple of turns round (whipping ) and a knot


CAD dawing in LeftiCad

Viola!,  Then paint with acrlyic varnish  - which will also seal the holes in the sail

andrew

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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #101 on: October 07, 2009, 01:09:54 PM »

Ah!
Now I get what you mean   O0

Simple is best :-))
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wideawake

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Re: Bodgers Class Build - Louis Heloise
« Reply #102 on: October 07, 2009, 01:20:21 PM »

I found this little diagram somewhere a while ago.  It shows basically the same method as Andrew has described.   I shall use this method on Colin Archer but not make the grommets as such.  I don't think it will be justified at the scale involved.   Apart from that i don't think I have the patience.

HTH

Guy
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #103 on: October 07, 2009, 02:19:58 PM »

Now then
If button thread is up to the job, I have small eyelets that would take 6 or 8 turns of thread easily. I could use these as grommets.

I am a bit surprised the button thread is up to the job. But I supose if it holds the buttons that stop my belly from escaping my shirt, they should be strong enough.
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andrewh

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Re: Bodgers Class Build - Louis Heloise
« Reply #104 on: October 07, 2009, 05:06:59 PM »

TT

Ah!  Now I see the confusion!

Button thread is not what buttons are sewn on with!  Can't understand why you might jump to that conclusion :}

Its a (very) heavy version of sewing thread, also called pack-thread.  If you had any you would know its strong enough and its also about scale for the cord that the full-size would have used.

I can sometimes find Linen thread on markets (in the UK) never had occasion to hunt in China  :}
For first rigging I use copper wire stripped off a transformer for this king of thing

Guys picture is exactly what I was floundering to describe - if you have the eyelets you are deeply sorted!
andrew
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #105 on: December 24, 2009, 02:26:32 AM »

After a couple of months of distractions, I have been doing some modelling again.

Time to finish off the hull.

The difficult bit was the last little section of planking, especially where it joined the sternpost.
The planks needed to twist where they did not want to be twisted. I tried steaming and tried window cleaner, but it was still proving difficult.
Planks of 3x8mm didn't want to do it.

My bodge was to use planks that were between 3x3mm and 3x1mm. These were held in place with wedges as they glued. The ends were filed/sanded to fit the sternpost.
Some were over long.

After completing, the inside of hull was fibreglassed, and copious amounts of resin were used to fill the gaps and strengthen this section of planking. As I don't have microballoons to bulk up as a filler, I used sawdust. Ugly but it works.

There was a lot of excess resin that ran out of the hull. This was trimmed off, and the overlong planks were also cut and sanded to shape.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #106 on: December 24, 2009, 02:28:06 AM »

Use of sawdust mixed with the resin, as a sustitute for microballoons.

Ugly but it works.

I have no idea what it would sand like. I assume OK.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #107 on: December 24, 2009, 03:37:03 AM »

Now it is time to return to the tricky problem I had with the transom end.

Originally I used 3mm ply for the transom. The hull top planks kept springing, due to a lack of gluing area.
I replaced this section of transom with 8mm ply. This means that later on I will have to do this for the transom above the deck line as well.  This will have a knock on effect for the upper frame, planking, and cap rails. But I will cross that bridge later.

There were also some difficulties with planking the transom that were overcome.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #108 on: December 24, 2009, 04:08:50 AM »

To twist the planks to go around the curve of the transom I did the following.

First, planks were cut over length and then slash cut to create the wedge. This was an arbitrary angle.

Then soaked in window cleaner. I tested it first This made planks very flexible when wet, but they became firm again on drying.

Then planks were clamped together at the thin end, and twisted apart at the fat end. This gave them a 90 degree twist.

After that they were left to dry.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #109 on: December 24, 2009, 04:19:13 AM »

The wedge shaped planks were pinned at one end, tacked with CA glue and taped together at the other end. This completed the rounded section of the stern.

The flats were then filled with available timer. Here I was using up scrap

There was still a section inside the hull that needed to be filled. This was also achieved with planking.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #110 on: December 24, 2009, 04:59:53 AM »

The last part of the transom to be fitted was a filler that runs up to the rudder tube. This was glued in with Epoxy.

After this epoxy was used liberally where the planks join frame #10, and the transom. When set the whole transom area was rock solid.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #111 on: December 24, 2009, 05:14:42 AM »

Next step was glassing inside the hull. Using epoxy and a light glass tissue I got in Halford's when I was back in the UK last year (Fast Glass brand).

I did not glass all the way to the top, as I wanted to leave some gluing surface for the rising posts. I think this was a mistake. I may go back and glass to the top edge, and then glue in the rising posts using epoxy.

Resin did escape through the planking. But this was cleaned off with a broad chisel and by sanding.

The other thing I did was use epoxy and sawdust as a filler to get down into the corners along the keel. The areas I cannot get in to glass. This also included where the planks meet the stem.

The next step will be sanding. And I now have a much more solid assembly to sand.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #112 on: January 06, 2010, 07:39:28 AM »

The hull is nearing completion now.

I have used a bit of filler. The main bit for filling was the depression spotted by Derek Warner, before I have even begun planking.
And along the first (top) 3 planks where I had bent the planks with heat, and cut myself some difficult grain (I know better now).

I want this model to look 'planky', and so I have only used filler where sanding on its own would have left a hole perhaps.

Some bits of the hull I can see daylight through, good job she was fibreglassed inside.

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andrewh

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Re: Bodgers Class Build - Louis Heloise
« Reply #113 on: January 06, 2010, 12:47:58 PM »

Looking very good, TT

The offer is prolly much too late but I could send you a bag of microbaloons if you would like (I bought a kilogramme of them so have lots needing a home)  Sawdust is a great filler - I used to use a lot of balsa-cement-with-balsa-dust as a filler

Glad the stern planking is coming together - the whole hull is looking "real and planky" as you put it.

I strongly believe that your build is very encouraging to us mortals who know our limitations.

andrew   
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #114 on: January 07, 2010, 02:27:44 AM »

Thanks Andrew.

My aim is to show that you don't have to be good to attempt a scratch build. And even when it goes wrong, you can make a reasonable bodge.


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Jimmy James

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Re: Bodgers Class Build - Louis Heloise
« Reply #115 on: January 15, 2010, 06:45:22 PM »

Amen to dat Brother :-)) ;)
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dave301bounty

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Re: Bodgers Class Build - Louis Heloise
« Reply #116 on: January 15, 2010, 08:17:23 PM »

T T   ,Your building has fasinated me .I Have only got the frames on mine .Yours looks damn good . well done . I Shall be watching .
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herrmill

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Re: Bodgers Class Build - Louis Heloise
« Reply #117 on: January 18, 2010, 11:47:40 AM »

Excellent work Mark!!!  :-))

Would you mind me asking what do you plan to use for the mast hoops?

Chuck
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #118 on: January 19, 2010, 02:48:36 AM »

Hi Chuck

The old method of taking a plane and making a few long shavings.

These shavings will be wrapped around a tube (my mast tube in this case) that is larger diameter than the mast. Wrapped and glued with PVA. The tube will be wrappen in clingfilm (food wrap) first, so that the ring does not glue to the tube.

Then dry the rings can be cut to length with my mini table saw. Alternatively they could be cut on the tube using a small hand saw, before sliding off.

I think Greggy did a mini-tutorial on his spin on this method on here. He then tested them to destruction.

I am on vacation for a month now. Perhaps I can get some dedicated time to advancing the build. Hope so.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #119 on: January 22, 2010, 04:59:59 AM »

The next stages will be finishing the hull to the point where I can paint it and do a floating test, and thus find the Centre of Lateral Resistance.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #120 on: January 22, 2010, 05:02:27 AM »

A side project that went wrong.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #121 on: January 22, 2010, 10:31:57 AM »

Next part for the hull was fitting the rubbing strakes.
This is a layer of planking outside the hull at the widest part of the hull along its length. So that when the boat rubs against the harbour wall, or other boats, the rubbing strake takes the punishment, and not the main hull planking.
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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #122 on: January 26, 2010, 03:56:43 PM »

Before fitting the stanchions I needed to work out where to put them and discovered an error in the plan. Apparently, reading around, errors common in plans.

In this case the stanchions are coincident with some of the bulkheads/frames. This does not work and so some of the stanchions were relocated.


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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #123 on: January 26, 2010, 04:04:22 PM »

The stanchions were tacked in place with CA and problems became apparent when I offered up a bulwark plank.

Firstly, due to the earlier problems with my bad top two planks, some of the stanchions had a big gap cause by alignment problems.

Secondly, by taking a couple of marker poles (sticks) to the transom, it was clear that there is a transition of the line/angle of the last three stanchions becoming more vertical.

It became obvious that the transom would have to be extended before the stanchions could be fixed in their correct positions.

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tigertiger

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Re: Bodgers Class Build - Louis Heloise
« Reply #124 on: January 26, 2010, 04:27:51 PM »

It was clear that the transom needed to be fixed before a bulwark plank could be used to guide the placement of stanchions.
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