Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Working Vessels => Topic started by: cuppa on July 24, 2014, 10:23:35 pm
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Picked up an ASD tug hull from Mark's Model Bit's this morning.
Really nice hull and very, very strong. I am well impressed.
Spent a bit of time chatting to Mark - a really helpful and friendly chap.
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Cuppa,
Bought a semi kit from Mark last year (he no longer carries it :(( ), was very easy to deal with, had no problem shipping to the states.
Mark
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See: http://www.modelboatmayhem.co.uk/forum/index.php/topic,35280.msg351347.html#msg351347
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See: http://www.modelboatmayhem.co.uk/forum/index.php/topic,35280.msg351347.html#msg351347 (http://www.modelboatmayhem.co.uk/forum/index.php/topic,35280.msg351347.html#msg351347)
haha . thats my build !
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Thanks chaps
Nice build Ian.
I am going to use a single 60mm kort on mine.
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Have been getting the hull prepped for the build and sorting shaft, kort, motor, coupling and prop.
will post some pictures when it reaches the 'interesting' stage if anyone is interested (I know builds on this hull have already been posted by others far more skilled than I am).
The ASD is a great hull and excellent value for money. I just hope I can do it justice.............
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Have been getting the hull prepped for the build and sorting shaft, kort, motor, coupling and prop.
will post some pictures when it reaches the 'interesting' stage if anyone is interested (I know builds on this hull have already been posted by others far more skilled than I am).
The ASD is a great hull and excellent value for money. I just hope I can do it justice.............
please do post pics of your build mate. Every build is different and every one does them different
Will you be using standard props and shafts with steerable kortz nozzles. Or will you be using steerable asd units from graupner ?
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Sorry. Didn't read your post correctly lol :embarrassed:
Look forward to seeing photos of the build
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And do a build log. Every stage of the build is interesting !!
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And do a build log. Every stage of the build is interesting !!
+1.
Mark
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Remember Mark showing the prototype at Wick steed 2010
It danced around the pond :-))
Not sure what running gear it had but it was impressive.
Its still on my top five of models to make before crossing the bar.
Ned
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I think that he used the motors etc as per semi kit....tony......ps my mate made one with a 70mm prop...nearly planes
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I think that he used the motors etc as per semi kit....tony......ps my mate made one with a 70mm prop...nearly planes
mine did plane !! Ask mark from mmb
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OK - here is the first picture. 60mm kort and the 5mm propshaft. Not bonded in yet as I have to get a P frame to support the shaft - I don't fancy hanging a 60mm brass prop on the end of the propshaft without it having some support.
(http://i1205.photobucket.com/albums/bb430/cupoftea77/Kort.jpg)
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. Not bonded in yet as I have to get a P frame to support the shaft
i put a p frame in mine but front it wasn't strong enough . so i decided to put wedges in there instead .. worked a lot better
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i put a p frame in mine but fount it wasnt strong enough . so i decided to put wedges in there instead .. worked a lot better
Thanks for the tip Ian - so a plywood fillet between the propshaft and the hull would be the best bet?
Cheers
Jon
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thats what worked best for me ! :-))
(http://www.modelboatmayhem.co.uk/forum/index.php?action=dlattach;topic=35280.0;attach=105479;image)
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Thanks Ian
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postman has just delivered the 755 motor from Action Electronics - man that is one big motor! It is the motor that Mark recommended for a large single kort installation for the ASD hull. Next job is to make up a motor mount then solder some wires and capacitors on to the motor and then run it in.
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Ooh. Just a thought too. Don't know if you can see on my picture. But I havn't used the bits that you got to stick to the kort nozzle for the rudder post to fit in to because I found that the angle of the prop shaft was too great
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Thanks Ian
Your help is much appreciated. I am now busy trying to reduce the propshaft angle as much as possible,
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Thanks Ian
Your help is much appreciated. I am now busy trying to reduce the propshaft angle as much as possible,
no problem mate don't want to tell you how to build it because we all build to out own ways. Just pointing out what worked best for me
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Slight change of plan in the propulsion system area. I have decided to use a fixed kort and rudder - just a system I prefer so am going ahead and modifying the kort to make it fixed.
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Hiya Cuppa,
I was thinking of fitting a Kort as well but my Propeller has rounded tips !! Am I correct in saying the ends have to be flat, just missing the wall of the Kort tube. ?
Cheers
Ken
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Hiya Cuppa,
I was thinking of fitting a Kort as well but my Propeller has rounded tips !! Am I correct in saying the ends have to be flat, just missing the wall of the Kort tube. ?
Cheers
Ken
ken. On real boats. Yes. On models it would t make much difference
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Hiya Cuppa,
I was thinking of fitting a Kort as well but my Propeller has rounded tips !! Am I correct in saying the ends have to be flat, just missing the wall of the Kort tube. ?
Cheers
Ken
Hi Ken
From my very, very limited experience I think that is optimal but not essential.
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Thanks for that. i might follow your lead and have a go.
:-))
Cheers
ken
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Hi Ken,
Usually props in kort nozzles are flat, you can buy kart shaped props from Prop Shop, http://www.prop-shop.co.uk/ (http://www.prop-shop.co.uk/)
Regards andy
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Thanks for the 'heads up' Andy. I will see how mine works first as I'm raiding the prop from another boat, to keep costs down.
I was thinking of filing the tips flat, but know that leads to balance problems. %)
Cheers
Ken
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ah well - all modeling activities suspended for at least 6 weeks. went to the coast for a day out yesterday - suffered big seizure down by the harbour and fell down on to concrete - big drama ensued involving coast guard and rnli. upshot is left arm broken just above the elbow and arm is in plaster from my shoulder to my wrist also have damaged left knee. the people who rescued me were wonderful and very kind.
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Ouch! Very sorry to hear that, get well soon.
... did you get any photos of the RNLI boat while you were sitting around holding your arm by any chance?!?!? %)
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Ahh cuppa that's really sad news mate. Hope you have a full and speedy recovery
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Wow, really sorry to hear that. Geat well soon.
Mark
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thanks chaps. must admit i felt a right fool being given all this attention in front of an audience of holiday makers. ah well - at least the concrete is ok!!!
i am very lucky that it was not far worse. the attention i received both at the scene and at the hospital was first rate.
sorry martin - i did not get a ride in a lifeboat. i think the rnli guys were in the area and helped - they were great- the coast guard sent a rescue\recovery team and i was then transfered from a coast guard vehicle to an ambulance. my memory of what happened is a tad hazy and i have no memory at all of the fall.
now i get to look at the asd hull for 6 weeks without being able to touch it.
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Hope you get better dammed soon I am enjoying reading this blog
Dave
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So sorry to hear of your accident Cuppa. I hope you recover soon. O0
How far away from home were you ? Glad you got home safely.
regards
ken
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thanks ken.
we were about 60 miles from home.
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I had a feeling you were some way as you mentioned lifeboat crew.
I'll pop over sometime and sign your plaster. {-)
Cheers
Ken
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hi ken
you are most welcome to pop round.
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Now that the ouch factor has reduced a bit i am finding that I can do some modeling with my arm in a cast so have done a little bit to the kort today. Pics to follow soon...........................
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Here we go: have installed the propshaft, skeg and kort. Decided to fit a steerable kort in the end. Good news (I hope) is that I went to the fracture clinic on weds and they removed the cast my arm was in (apparently for some types of fracture close to the elbow it is better not to immobilize the joint). I am still limited in what I can do before ouch sets in but can do a lot more than when I had the cast on.
60mm prop arrived this morning. Anyway - here are a couple of pics of progress so far.
(http://i1205.photobucket.com/albums/bb430/cupoftea77/Hull.jpg)
(http://i1205.photobucket.com/albums/bb430/cupoftea77/Kort-1.jpg)
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Well done :-)) I see you're made of sterner stuff. :}
How do you plan to steer her ? is the Kort steerable, as the linkage looks to be very close to the stern ?
Cheers
ken
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How do you plan to steer her ? is the Kort steerable, as the linkage looks to be very close to the stern ?
Cheers
ken
Hi Ken
The kort is steerable. I think the apparent lack of distance of the steering arm from the stern is a trick of the camera/shadow. The linkage is actually 1 1/2 inches from the transom.
Cheers
Jon
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Ah !!. I would have liked to try a Kort on my latest production but I started making the rudder first so I'll see how that goes.
Am I correct in assuming the centre shaft that turns it is positioned directly over the middle of the prop blades ?
Cheers
Ken
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Ah !!. I would have liked to try a Kort on my latest production but I started making the rudder first so I'll see how that goes.
Am I correct in assuming the centre shaft that turns it is positioned directly over the middle of the prop blades ?
Cheers
Ken
Hi Ken.
I am no expert on korts but that is exactly how I set mine up - prop centre line on the pivot point.
Cheers
Jon
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Managed to do a little more:
Motor mount is now sorted and plywood reinforcement has been added for the P frame and kort mountings:
(http://i1205.photobucket.com/albums/bb430/cupoftea77/P8270402.jpg)
Basically the motor sits on a bed of filler and is clamped by the brass rod. First time i have been totaly happy with the motor to propshaft alignment - it is as close to bang on as i can get it.
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If I was YOU I would certaintly reinforce both the motor mounting and the rudder stock with P40 Grp filler.............REASON WHY...............Ordinarry car body filler has NO inherrent strength and WILL NOT stay fixed to the hull..........P40 is a totally DIFFERENT type of filler as it has Fiberglass strands in it and it will adhere properly to the hull.....the last thing that you will need is a motor mount breaking under vibrations is it.....secondly Ordinarry car filler is PORUS and will absorb water...........
Dave
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Thanks Dave.
I had not thought of that - many thanks for the advice. Think I will grind the filler out and then replace it with P40.
Many thanks for your help.
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Hi just picked up the point about propeller tip shape for kort nozzles.
I had an email chat with the late "Tow boat Joe" who was a tug master on the Mississippi and he said that with the many logs on the river they went away from the close fitting props as these were being damaged and jammed up if a log got caught up. They went to round tipped props because they did not get jammed so badly when this happened.
regards Roy
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Hi just picked up the point about propeller tip shape for kort nozzles.
I had an email chat with the late "Tow boat Joe" who was a tug master on the Mississippi and he said that with the many logs on the river they went away from the close fitting props as these were being damaged and jammed up if a log got caught up. They went to round tipped props because they did not get jammed so badly when this happened.
regards Roy
Interesting - thanks Roy
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I have found just the opposite with my model korts.
My Seaport tug with the original prop and nozzle picks up
weed.reeds and small plastic bags with ease.
My springer with a kort nozzle and flat bladed prop
does not have the problem.
Ned
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Here is a picture I me sitting inside the kortz nozzle of the real tug that this kit makes up. Also my profile picture. The svitzer sun
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Excellent picture Ian
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Have now glassed the motor mount etc in using fiberglass paste as opposed to filler - much better. Thanks chaps.
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Stavros was quite correct - as per my previous post I applied some pressure to the filler fitted motor mount and was able to 'remove' it. So I have removed all the parts I had fixed in with filler, removed any remaining filler from the areas where those parts were adhered, made up a new motor mount and have now fixed everything with fiberglass paste. Much, much stronger - a 'proper' job. Today I have to make up battery mounts and and an internal propshaft support. A big thank you to Stavros for saving me from a potential disaster when operating the model..........
(http://i1205.photobucket.com/albums/bb430/cupoftea77/P9100407.jpg)
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Glad to be of help
Dave
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Propshaft support and battery 'boxes' now installed:
(http://i1205.photobucket.com/albums/bb430/cupoftea77/P9110408.jpg)
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Very nice and neat job mate !!
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Thanks Ian.
I have now added the 'power panel':
(http://i1205.photobucket.com/albums/bb430/cupoftea77/P9120409.jpg)
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Well - I changed my mind once again and decided to go with a fixed kort and rudder. Next problem was where and how to get a suitable rudder. In the end I decided to go with a standard shop bought rudder as a starting point and then build up laminations of ply around it and then sand it to shape. I hope the final result of these labours is not too too bad.........
(http://i1205.photobucket.com/albums/bb430/cupoftea77/P9220414.jpg)(http://i1205.photobucket.com/albums/bb430/cupoftea77/P9220415.jpg)
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Hiya Jon,
You may want to round the corners of the rudder a bit more to enable better water flow with no 'Eddie-currents'
Cheers
ken
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Thanks Ken - will do
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Now I am starting to think about the best way to do the deck and its support framework and indeed what material to use in their construction. Probably I will go with a plastic deck and a wooden support framework. I also plan to fit a towing hook in case we ever feel the urgent need to tow something. So that will need a fairly hefty support under the deck. Seem to have spent the majority of this week dealing with medical matters so have not had much time for boats this week.
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Today I wired up the basic electrics - all works ok and I will post a picture when I have neatened them up a tad...................
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Here is the basic electrical system in situ. Still looks a bit like a squirrel's nest but please pardon that...
(http://i1205.photobucket.com/albums/bb430/cupoftea77/PA070418.jpg)
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Looks all bright and bushy tailed to me.
Roy
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Thanks Roy
i am now trying to pluck up the courage to do the deck.......................................................
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how you getting on with this build john ?
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Hi Ian
Sorry about the slay in replying. I put the tug on hold for a while so I could gain some more experience before cracking on with it. I hope to getting on with it in about 2-3 months time.