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Author Topic: review of Portgarth  (Read 2571 times)

portside II

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review of Portgarth
« on: September 27, 2010, 11:23:40 PM »

One of the lads at Goole has bought a Portgarth hull and is after some build info ,
I think there was a review in one of the modeling press mags but cant remember which one or when.
We have an extensive library of boat mag's at the club sorted in ascending order but would take ages to go through , so a month and year would be helpfull.
thank's
daz
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I like to build my boats to play with, not to just look pretty,so they dont !

portside II

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Re: review of Portgarth
« Reply #1 on: September 30, 2010, 08:49:42 PM »

come on somebody must have an idea when it was reviewed , or do i have to trawl through all those mag's
daz
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Tugwash

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Re: review of Portgarth
« Reply #2 on: October 01, 2010, 09:57:09 AM »

Dunno about where it is in a mag.. but its here in kit form http://www.mobilemarinemodels.com/acatalog/Portgarth.html

Maybe try being more specific on what 'areas' you need some advice on 'general build info' is a little vague

The hull if brought new should have came with a plan which really is as much info your going to get i expect if no ones answered, as a lot of kits they do require you to have some experience in building previously and they don't give you much in the way of construction tips and help its up to the modeller to work it out for him/her self.

If you can't understand the plan your going to be stuck no matter what we tell you, so try studying the plan maybe get some reference material using google of the real thing, you will be surprised how often a real life building technique can work on a model in a scale form .

As i said be a bit more precise on what areas your stuck on we might be able to help over come problems that way.
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Tugwash

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Master Cheif

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Re: review of Portgarth
« Reply #4 on: October 02, 2010, 11:50:15 AM »

while on my travels over the bandwaves of the air. i came across this ... which i think is exactly the type of thing your after so hope this helps


http://modeltugforum.com/index.php?topic=2825.0
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sailorboy61

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Re: review of Portgarth
« Reply #5 on: October 02, 2010, 01:23:39 PM »

I'm currently at the bridge structure builing  :o all I can say is getting all those angles right is a devil of a job..... I'm building that part in plasticard, but think it might actually be easier in ply, at least there would be something more substantial to hold all the filler.......... {-)   {-) :o
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Tugwash

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Re: review of Portgarth
« Reply #6 on: October 02, 2010, 05:02:11 PM »

make some angled jigs from scrap ply to support the angles of the plastic card thats how we all do it  :-))

you'll find that the structure will become more rigid once you have a roof section in place but if you worried about its overall stability you can add internally along the walls vertical to the windows some plastic card 'I' bar's which look like RSJ's this will help its strength and add some extra detail inside the tower other option could be to make it solid ... so fill with car filler once done then just paint on black windows, although not as nice it will still do the job if your that worried.

building it with ply will work too but the thickness to keep it in proportion to scale will give the same effects as plastic card, as you will need to be using 2mm -3mm ply.

you could make it of ply as a solid plug, then make a GPR mould then cast in GPR for the finished tower with a gel coat finish, just cut the windows super strong and you can make more if ya smash it up doing something silly %%

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sailorboy61

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Re: review of Portgarth
« Reply #7 on: October 02, 2010, 05:12:17 PM »

make some angled jigs from scrap ply to support the angles of the plastic card thats how we all do it  :-))

you'll find that the structure will become more rigid once you have a roof section in place but if you worried about its overall stability you can add internally along the walls vertical to the windows some plastic card 'I' bar's which look like RSJ's this will help its strength and add some extra detail inside the tower other option could be to make it solid ... so fill with car filler once done then just paint on black windows, although not as nice it will still do the job if your that worried.

building it with ply will work too but the thickness to keep it in proportion to scale will give the same effects as plastic card, as you will need to be using 2mm -3mm ply.

you could make it of ply as a solid plug, then make a GPR mould then cast in GPR for the finished tower with a gel coat finish, just cut the windows super strong and you can make more if ya smash it up doing something silly %%

Thanks for the tips tugwash.....

have had another little play this afternoon and things seem a little more solid now.
Had already decided to put some stiffening on the inside, but as I'm using thicker card for the bottom sections, it might not be needed, the door frames and the fore/aft windows will hopefully become 'girders'.... don't want to make it solid as planning to soup up the inside...nothing like overstretching yourself on a first attempt!! Only thing playing on my mind now is how to get the inside painted  as I feel the 'lid' needs to be on to get the bottom pieces aligned and glued.... I suppose a second 'shelf' around the top of the bottom pieces will do the trick and still allow internal access. Its all a good learning process. Don't think topweight will be an issue once a decent set of batteries are installed. Must stop putting off the installation of korts/propshafts for easier tasks..... though beginning to wonder if some sort of P or A frame suppost for the shafts might be needed......can probably just stiffen up the inside end of the shaft I suppose? All seemed so simple when I bought the stuff!!!


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Master Cheif

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Re: review of Portgarth
« Reply #8 on: October 02, 2010, 07:21:08 PM »

fitting the korts and shafts is the most critical part of the build with tugs for the simple fact if you get it wrong your models going to be worth its weight in scrap.

i can't tell you where the shafts are to exit so you will have to work that out with careful studying of the plan remember measure twice drill once! but in this case do it like 50 times!!

once the holes are drilled you should elongate them to allow shaft to sit right remember the hull is curved in that area.

the prop shaft should be at 90 degrees! be sure to get that right!! ( i would suggest to fit some oilers to the shafts at this point but that's personal preference)

but the first thing you should do before fitting the prop shafts is get the korts in ..

that should be a relatively simple job the plans are full size so it should be easy to get it right, once there in you can fit the shafts.. now here's the best trick you will ever hear in getting the shaft aligned so the prop dose not foul the kort...

cut a disk out of ply the exact shape of the internal diameter of the kort...

dead centre drill a hole and then fit this disk using the brass nut to the shaft, now offer up the shaft to the hull and mark the holes needed remember to keep it level and at 90 degrees so dead flat!!

drill the hole and elongate it slightly to allow some movement for alignment, keep the disk on the end and slip it into the kort nozzle. now the prop end is going to be perfect its just a matter of sealing in the shaft.

you have korts eze with your build so you able to slide the end part back to remove the shaft .. do this to remove the disk and then add the shaft support to the hull and shaft remember to leave enough room to allow the kort eze part the ability to slide back or your "xxxxx"!!!

my trick get some 5 min epoxy .. tape the shaft in place  this is aided by the shaft support or 'skeg' then inside the hull pour some 5 min epoxy on the shaft and hold it in place until its set..
 
once its all set fit your prop and give it a spin to check that its not binding up, if its binding your able to cut the epoxy with knife to free up the shaft and try again.

 if all's OK  you can strengthen the shafts joint with either car body filler or some expoy resin and glass fibre or a mix of both!

sand out the extra waste and jobs done i swear its not hard but do take your time and check, re-check and do it all again!

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portside II

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Re: review of Portgarth
« Reply #9 on: October 02, 2010, 10:53:44 PM »

Cheers lad's some realy usefull info there which i will pas on to the old boy at the club.
i think the pictures of the finishing is more like what he is after.
daz
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I like to build my boats to play with, not to just look pretty,so they dont !
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