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Author Topic: MMM Portgarth build  (Read 127793 times)

T33cno

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MMM Portgarth build
« on: March 14, 2017, 07:35:51 PM »

I'm sorry that my Billings Smit Rotterdam is too far on to start afresh with a blog BUT
My Portgarth arrives this Friday so I'll supply pictures as I go from day one.


For those interested I do still upload Rotty pics here. I'm a beginner but doing not too bad.
https://techno.smugmug.com/Smitt-Rotterdam/
 {-)
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T33cno

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Re: MMM Portgarth build
« Reply #1 on: March 16, 2017, 03:08:07 PM »

True to form I got my dispatch email today for overnight delivery  :-))
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T33cno

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Re: MMM Portgarth build
« Reply #2 on: March 17, 2017, 01:30:46 PM »






The box



Here we go
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T33cno

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Re: MMM Portgarth build
« Reply #3 on: March 17, 2017, 01:34:24 PM »

I guess I'll start with the Skeg and making a stand.
To bow thrust or NOT to bow thrust, what do you think?
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norry

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Re: MMM Portgarth build
« Reply #4 on: March 17, 2017, 02:22:29 PM »

If you are going to try towing with your tug then its a Big YES...

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...Get Your Tugs Out For The Buoys...

timbo

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Re: MMM Portgarth build
« Reply #5 on: March 17, 2017, 02:52:38 PM »

What are the bits on the top shelf from.
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T33cno

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Re: MMM Portgarth build
« Reply #6 on: March 17, 2017, 04:05:59 PM »

What are the bits on the top shelf from.
Halfords
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cos918

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Re: MMM Portgarth build
« Reply #7 on: March 17, 2017, 04:24:27 PM »

Bow thruster defentaly . You will have more fun


John
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Netleyned

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Re: MMM Portgarth build
« Reply #8 on: March 17, 2017, 04:32:08 PM »

Halfords


Think he means the other shelf {-) {-)
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T33cno

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Re: MMM Portgarth build
« Reply #9 on: March 17, 2017, 04:53:42 PM »


Think he means the other shelf {-) {-)
Ned
Yes I know  {-)
If he looks at the Tug under the bench  O0
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T33cno

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Re: MMM Portgarth build
« Reply #10 on: March 17, 2017, 04:58:14 PM »

My Afon Alaw has the biggest Roebesch thruster fitted but it will rotate on the spot just with the steerable korts and appropriate prop rotation.
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Netleyned

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Re: MMM Portgarth build
« Reply #11 on: March 17, 2017, 05:19:20 PM »

Walked past the 1:1 version last week
in the Fishdock.


Ned
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Smooth seas never made skilful sailors
Up Spirits  Stand fast the Holy Ghost.
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T33cno

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Re: MMM Portgarth build
« Reply #12 on: March 17, 2017, 07:17:04 PM »

Ok first up is a reality check.
It's not safe to rely on the MMM casting marks for rudders Korts or props, best only for an approximation.
Using a number of set squares to cross check I have attained accurate parallel centre lines.
The hull without deck is currently 301mm wide.
The Kort or rudder centres are 70mm either side of Keel line and 80mm from each edge


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T33cno

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Re: MMM Portgarth build
« Reply #13 on: March 17, 2017, 07:44:55 PM »

Kort holes drilled with a pilot then a quality step drill
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T33cno

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Re: MMM Portgarth build
« Reply #14 on: March 17, 2017, 07:50:34 PM »

Korts assembled and cleaned up with files and sandpaper

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T33cno

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Re: MMM Portgarth build
« Reply #15 on: March 17, 2017, 08:12:17 PM »

I must point out that I'm disappointed with the inconsistency.
The kort tube support on the left is beautiful but the one on the right should have been binned IMHO
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T33cno

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Re: MMM Portgarth build
« Reply #16 on: March 17, 2017, 08:45:16 PM »

Setting those Kort shafts up perpendicular and parallel is going to be quite a feat I think.
For now I'm preparing the motor mounts with 140mm centres
Using an offcut of Paxolin from work I will drill and tap this.
Paxolin is made from laminated resin bonded paper and is waterproof.



These motors are much BIGGER than the MMM T12 but they are a 12 pole low rev motor and I imagine quite a bit more powerful. They are so big that standard motor mount brackets have to be modified
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T33cno

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Re: MMM Portgarth build
« Reply #17 on: March 17, 2017, 10:18:07 PM »

Again pilot holes and step drill. Will file out tomorrow



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T33cno

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Re: MMM Portgarth build
« Reply #18 on: March 18, 2017, 11:51:33 AM »

Ok guys
If I don't fit it I won't have the option  :-))
So rather than the twin prop Raboesch that is fitted in my Athon I've opted for the largest paddle version.
My thinking is that if it fails it is easy to fix whilst as far as I know the twin prop version would have to be cut out if the drive wears out.
Local Leeds model shop happened to be cheapest too

Today I must focus on making a stand before going any further
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T33cno

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Re: MMM Portgarth build
« Reply #19 on: March 18, 2017, 02:44:49 PM »


Well that was relatively painless and FREE. Some of the junk I keep in the shed just in case that the wife <*< on about finally got put to good use {-)


Just to cut slots for the prop shafts





An afterthought! I could actually put a base and a pair of wheels on that for transport  :-))
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T33cno

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Re: MMM Portgarth build
« Reply #20 on: March 18, 2017, 02:49:44 PM »

Before starting this build I searched everywhere for other build blogs and frustratingly all threads died not long into the build.
This thread will run I promise.
Feel free to jump in anywhere with advice or even questions


Shortcut to all photos for those that can't be arsed with the reading  {-)
https://techno.smugmug.com/Portgarth-build/i-BPPJFdX
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Fastfaz

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Re: MMM Portgarth build
« Reply #21 on: March 18, 2017, 04:47:05 PM »

  Good luck with the build, I know where you are coming from re the hull moulding and quality of parts supplied with the kit. When you lay out that much money you would expect much better quality components to be supplied, I bought some Kort nozzles from them 70mm one was fine the other one looked like something from a Kindergarten play dough session! Okay a tiny bit of trimming we can accept but these nozzles looked like they had met up with a very coarse belt sander or a linisher and lets face it they are not cheap to buy.
     Moan over.
          Cheers, Pete.
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T33cno

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Re: MMM Portgarth build
« Reply #22 on: March 18, 2017, 04:49:02 PM »

Thanks Pete
Yes they could be should be better
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T33cno

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Re: MMM Portgarth build
« Reply #23 on: March 18, 2017, 07:05:19 PM »


Handy tip. The Kort tubes are 8mm ID and useful for aiding alignment if you are 8 to 8 like mine.
I may have to cut my motor mount in two to get lower.



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T33cno

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Re: MMM Portgarth build
« Reply #24 on: March 19, 2017, 11:13:47 AM »

I was right about motor mount  :-))
Now in two halves

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