Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Working Vessels => Topic started by: chris holley on March 29, 2010, 09:30:28 pm
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Here is one for you,
i was down the boating lake sunday afternoon, i collected my gear an put it in the car an went for a walk along the sea (now the question) O0
has anyone ever seen, or made a working dredger %%, if so any one got an pictures or videos they could send
thanks chris
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Sounds simple enough!!! :o
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for some one its simple for me, well i have trouble making a sandwich :}, which reminds me i have to get some food for work.
any way back to the subject in hand, it does not sound hard a few pumps an pipes. servo operated arms an hay,
would be great to see one though
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I would imagine that the biggest problem is that the stuff you want to dredge up doesn't scale down to model sizes. For example real sand would be too coarse for a model suction dredger and mud would be too compacted for a grab type model dredger. Same problem as when you try and make a model icebreaker - real ice is like reinforced concrete - your model just climbs up on top of it and then sinks by the stern. :o
Colin
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very true <:(, done not have dredge really mud or sand just give the impression its busy doing that
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How about an old type bucket dredger, the type with a continuous rotation of large buckets on a kind of conveyer.
I cant find any pics , but I am sure one of the Mayhemers will. Over to you Dickie
Bosun
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A few ideas.... http://www.modelboatmayhem.co.uk/Gallery/Science_Museum/imagepages/image247.html
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Chris a grab bucket dredge would be ok to build with a single crane and twin chain grab bucket and dredge hopper doors that open to release the dredging spoilings sand etc the only problem is the suction of the sand/ mud this is what causes the dredge to rock in roll the suction being a ex dredge crew I have seen a couple of these in r/c 1/48 and 1/24 scale would be a great fun model to work the old girl i worked on was a single screw grab dredge built 1948 have work trailing cutter suction,bucket endless chain of buckets,grab dredge,and the suction barge type dredgers.good project to build in r/c tassie48.
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a grab bucket dredge would be ok to build
I wouldn't have thought that the bucket would be heavy enough to sink into the 'seabed' to grab anything, it would just sort of scrabble around.
Ditto with the continuous bucket dredge, getting enough weight behind the bucket chain to force it into the sand/mud/whatever.
Lance
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If the model just sucked up, dredged up or bucketed up water it would still look quite realistic as it is mainly the water you see slopping everywhere on a full size working dredger.
Colin
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Hi Chris, This IMG was scanned from Model Boats mag FEB addition. Photo took by Dave Wooley at MPBA National Finals At West Hull 2009. Hope this is some help.
John
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wow what a great img poll, just need to find a hull which looks right for the job
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:} were back yippee
Anyway been looking around the net for a hull models by design do a hull i could use the CHANT, 2 versions 37inc an 55inc hulls.
http://www.modelsbydesign.co.uk/uploads/thumbs/thumb_262.jpg
and the coaster by model slipway but there a bit expensive if i just want a hull. not found much else though will keep looking, anyone with a ship style hull, about 1metre there selling,
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Back in the day, when the crane was readily available, more than a few people
built up barge and crane combos using that bucket crane...
There should be some build up threads on the boards here somewhere... (http://www.modelboatmayhem.co.uk/forum/index.php?topic=2167.0)
http://www.modelboatmayhem.co.uk/forum/index.php?topic=2167.0
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Chris a brass bucket made to scale would be ok weight wise and operational useage you need to get copies of the bucket and the two wire/chain operation one is the open closeing of the bucket via pulleys blocks the other is the lift up down wire that lowers the bucket to the sea floor and lift it up both wires operated together on seperate drums winches.
We use to bucket water on the deck to help wash down as we went out to dump the mud a 3 meter bucket held a lot of water.a brass bucket would be ok tassie48
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I think i would like the sucking type off system rather than buckets, dont no why
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Chris the only problem is the pump impellor you have to get the water mud ratio right as the pump will stop and seize up the cutter suction dredgers use to run a lot of water thru the brew to get the pump running so a boat bilge pump with large impellor base will have to do the job.Today i was in the hobby shop and saw a model crane with working bucket all plastic and I was told a local lad has fitted on to a barge to make a model Tonka and BuddyL use to make a grab bucket crane so a look around the op second hand shops may make sense for a model tassie48
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Chris look up W H ORBELL on youtube it shows her working and she is over in the UK working somewere ex NZ cutter suction dredge new the name would come to me in the end old ships names so many ships sorry i can not cut and paste yet tassie48
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I guess you don't even need lifting pumps for a 'sucking system', you could use a "bubble lift" ... like internal fish tank filters.....
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or, what about this?
http://www.watermaster.fi/index.html (http://www.watermaster.fi/index.html)
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Here's adredger I work on from time to time. Powered by 2 schottel units aft, what you can't see forward is her ladder and cutter head.
Built in France by a company called Hydroland she's a cutter suction dredger.
(http://www.clydesite.co.uk/bristol/images/2009/12/29685.jpg)
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Thanks Channel, whats is the name off this dredger? i can google an see what comes up
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I am looking for a ship style hull with high bow an low level deck to stern anyone have something or an idea what to use, maybe a slipway coaster hull thanks
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I am looking for a ship style hull with high bow an low level deck to stern anyone have something or an idea what to use, maybe a slipway coaster hull thanks
Try searching "rainbowing dredges"
http://images.google.com/images?hl=en&gbv=2&tbs=isch%3A1&sa=1&q=rainbowing+dredge&aq=f&aqi=&aql=&oq=&gs_rfai=&start=0
ok2
http://www.boskalis.com/nieuws.php?pageID=62&itemID=1022
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:} :}
this is the type if dredger iam after, found a site that's selling them in us, the real ones mind {-).
there was also plans off them there to.
just need to find a hull like the one above by Umi_Ryuzuki.
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Hi!
I once saw and showed somewhere on this forum, pictures of a model suction dredger. Think it was built by someone in Germany. Don´t know where to find it now, but it is possible to build one.
Happy easter!
Hama
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hama, thanks will have a look on here for it :-))
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no i cant find one :((
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It would be simple enough to box the hull, and then
shape the bow and stern as required.
:-))
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never built a hull, would not no where to start
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never built a hull, would not no where to start
Building a box would be a good start... 8)
See started with a box... :-))
http://www.rcgroups.com/forums/showthread.php?t=1152361
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Chris what about converting a Model Slipway Coaster to a dredger looks ok as a kit the four hatcher has a loader on deck i think its well worth a look as the hull and fittings are all their just need to make a side pipe or crane and some bottom doors to make up well worth a look. I do not no much about model Slipway models but they look ok would be a nice dredger size 1/50 close to 1/48 scale and about a metre long good transport size price seems ok as well lots of build data on the web as wel.l
Like I say do not no much about them and would be a nice model to build some thing different tassie48
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i bought the shamrock from them, i thought it was goin to be a nice little model to start with. but it was rubbish cut out the plastacard deck an found the hull was disformed. they said i had messed with it.
i did email them about the coaster hull £55 with postage an £10 insurance. also models by design have a nice little boat the CHANT
48th, 37inch, 6.75 inch
32nd 55.5 inch, 10.1/8 inch
37" £65.00 plus p&p / 55.5" £77.00 plus p&p
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Thanks Channel, whats is the name off this dredger? i can google an see what comes up
CSD Malago. Built in france by Hydroland.
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Ha, found the one I was referring to! www.pbase.com/gearedsoft/jandenul (http://www.pbase.com/gearedsoft/jandenul)
Hama
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Ha, found the one I was referring to! www.pbase.com/gearedsoft/jandenul (http://www.pbase.com/gearedsoft/jandenul)
Hama
Great build,... Fantastic bit of Brass work,... and the pump.. wow... 8)
It actually "rainbows...."
Thanks for hunting that down Hama. :-)
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yes thank you hama, what a boat, bit big for me though need smaller dont have the room. still the info is there to be had just on a larger scale
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Ok its been a looong time this, but iam back :-)). Been out off work have a new job :D, an sold my old boats :-)) :-)).
So with that out off the way iam back to try an make a start on a dredger :-). Only problem is i have forgotton where i was <:(.
So i live in south wales, an there is about 4, maybe 5 dredgers. but a new one has now turned up %%. UKD ORCA, below
(http://i103.photobucket.com/albums/m126/chrisholleyuk/ShipPhotoUKDORCA.jpg)
now iam after a hull which looks like this, but iam not finding a lot that look like it, must be looking in the wrong places. i wanted something the sucked mud/sand an the hulls i find which will work are from deans marine the fairwind or anna marie.
(http://i103.photobucket.com/albums/m126/chrisholleyuk/fairwind1.jpg)
So my question is does anybody have an ideas to where i can find something that looks like orca,
(http://i103.photobucket.com/albums/m126/chrisholleyuk/323-General-Arrangement-21-11-2008-copy.jpg)
if not then my path will change, with the bridge at the rear an suction pipes an hoppers forword off this.
i no she has 2 z drives an bow thruster, what goes on under the water does not really matter just the deck needs to look good i always say.
thanks for the help in case i forget chris
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What about the ESK - dredges the river at Whitby?
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Just a Question... if you build a dredger of some sort... once you had the fun and sucked up all the rubbish off the pond floor what are you going to do with the stuff you sucked up? i mean that most people that will walk buy seeing you dumping the dirt back in the lake might get the wrong idea and then you'll have to explain it to the cops :police: {-)
although its a great idea......
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Message deleted
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Fleetscale have a dredger hull : http://www.fleetscale.com/sm2/index.php?topic=101.0 (http://www.fleetscale.com/sm2/index.php?topic=101.0)
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yep thats it, what info do you have on it as a model. an all the workings, an setups?
when will it be avalible thanks :-)
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We have asked the builders for drawings but they have not replied. It is a case of hull only. The ship is current and it is the Sand Heron based in the UK, and it can be googled. It's a case of studying the pictures or visiting the ship, contacting the owners etc. The hull is available now, price £50.
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ok will look into it thanks fleetcom.
Any ideas on the type off hull i can use to make the UKD orca.
chris :-))