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Post by Mark on Jun 24, 2007 3:19:36 GMT 1
Hi Marcus, have tha Amati instructions said anything about installing prop shafts yet. I'm curious about when they are going to tell us when to do this and how they are going to make the holes in the hull. Well. not so much how, but where to make the holes.
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Post by Numpty on Jun 24, 2007 11:41:31 GMT 1
What drive set up are you to have will it be two motors or three and are you going to use the hachette RC set or source your own goodies?
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Post by Mark on Jun 24, 2007 12:15:38 GMT 1
I was planning on using the Hachette supplied equipment, at least for the motors & shafts. I will probably get a different transmitter/receiver with more channels for gun turrents, etc.
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Post by markus on Jun 24, 2007 19:31:09 GMT 1
Hi Marcus, have tha Amati instructions said anything about installing prop shafts yet. I'm curious about when they are going to tell us when to do this and how they are going to make the holes in the hull. Well. not so much how, but where to make the holes. in germany the original drive set hasn't been delivered by now (i heard amati and graupner are still working out the final version of this drive) i hope that they work out an acceptable drive till it gets offered in UK - the offered drive in germany was what i call rubbish the right place of the holes can easily be found by gluing a 3mm drill into a 4mm/3,1mm brass tube (like used for guiding the rudders) just work this 'hand drill' through the round shaft guides in the frames and the hole is in the right place.. markus
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Post by gerrybuilt on Aug 16, 2007 0:27:15 GMT 1
Hello Marcus, I am glad I have found the expert shiff builder. Please, could you tell me how the central propeller shaft could be installed. I can't see how to make an accurate hole through the resin part under the stern.
I am concerned that you and others consider the Graupner motors and gear rubbish.Can you advise on a better system? Next point. Hachette say that the viscosity of water doesn't alter with scale, therefor the flow charactistics of the model are different to the real ship. Bigger rudders, and the propshafts are arranged to a convergence, not as in the original, which was paralell. How would ths affect the performance if a 3rd motor (central) is fitted? I have read much advice on the costruction, and I am now slightly bemused. Perhaps I should stick to Hachette's instructions, after all, this is my first attempt at such a project.
Regards.
Gerry
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Post by Guest on Aug 16, 2007 8:17:50 GMT 1
Hi Marcus, have tha Amati instructions said anything about installing prop shafts yet. I'm curious about when they are going to tell us when to do this and how they are going to make the holes in the hull. Well. not so much how, but where to make the holes. in germany the original drive set hasn't been delivered by now (i heard amati and graupner are still working out the final version of this drive) i hope that they work out an acceptable drive till it gets offered in UK - the offered drive in germany was what i call rubbish the right place of the holes can easily be found by gluing a 3mm drill into a 4mm/3,1mm brass tube (like used for guiding the rudders) just work this 'hand drill' through the round shaft guides in the frames and the hole is in the right place.. markus The reason why the Hachette RC set has not been supplied in Germany yet is that it is to be supplied when issue 58 goes on sale, this was clearly noted on the UK Hachette RC offer leaflet within issue 23. Germany will no doubt be supplied this set at the point 58 (for those who bougt it|) goes on sale which is only 8 issues away for Germany as are in advance of the UK. The reason why this is to happen.... the assembly/installation advice for the Hachette RC pack comes in 58 too You might think it is late in the day for such an installation but Amati dont seem to think so I also happen to know that the Hull and Hachette RC set have been water tested very recently by Amati suppose they think it is 'rubbish' too
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Post by markus on Aug 16, 2007 10:17:52 GMT 1
i'm really curious about the instructions how to build their drive in, especially for the middle propshaft..
markus
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Post by markus on Aug 16, 2007 12:37:25 GMT 1
Hello Marcus, I am glad I have found the expert shiff builder. Please, could you tell me how the central propeller shaft could be installed. I can't see how to make an accurate hole through the resin part under the stern. I am concerned that you and others consider the Graupner motors and gear rubbish.Can you advise on a better system? Next point. Hachette say that the viscosity of water doesn't alter with scale, therefor the flow charactistics of the model are different to the real ship. Bigger rudders, and the propshafts are arranged to a convergence, not as in the original, which was paralell. How would ths affect the performance if a 3rd motor (central) is fitted? I have read much advice on the costruction, and I am now slightly bemused. Perhaps I should stick to Hachette's instructions, after all, this is my first attempt at such a project. Regards. Gerry hi gerry! making the hole in the resin part is not that difficult, posted a 'how to' in the r/c thread: buildthebismark.proboards52.com/index.cgi?board=rc&action=display&thread=1174190701&page=7#1181468354graupner motors aren't rubbish at all - only the gears and the way amati constructed the whole drive didn't please me at all. a better system? heard from a german guy who built a well working scale drive, but can't remember his name even the original propshafts were not 100% parallel, additionally they had a slight angle downwards. see the original layout on www.bismarck-class.dk/technicallayout/rudders_propellers/rudders_propellers.htmlthe 3rd prop doesn't affect the turning capability of the ship. only the speed, especially turning speed with v-mixer is higher with 3 props. after several tests i found out that 2 motors powered with 6volts are enough. 3 motors and 7,2volts allow you to escape from angry ducks hunting your ship ;D ;D ;D hachette's drive will work, too - but how does it look markus
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Post by bob on Aug 17, 2007 19:54:22 GMT 1
My only gripe really Marcus is the Hatchette rudder size and position it looks awful. Also the gearboxes are a bit clunky/noisy. I shall stick with my planned 6v for my 3 motors, I was impressed though with your 7.2 video and the turn performance.
The Hatchette gear is good enough quality. I still dont understand why people have to wait until Issue 58 before they get it. Ideally one should be planning their installation early in the build, almost as if their kit is an afterthought and not properly tested.
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Post by popeye on Nov 9, 2007 16:15:32 GMT 1
I have posted some more pictures showing my Bismarck to date. It shows the start of the second hull planking using the long mahogany strips, how I am fixing the middle propellor as a freewheeling (unpowered) prop, the fixing of the propshafts into the frames inside the boat, a sanding block and roll of sandpaper, plank bender, and how I have secured the decks using quick release quarter turn dzus screws. click on www.flickr.com/photos/commander-popeye/and either just scroll through the pictures or select the Bismarck as at 9 Nov 07 set.
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Deleted
Deleted Member
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Post by Deleted on Dec 30, 2007 4:27:46 GMT 1
Hello I know a lot has been said about the prop shafts, but since I've reached part 10 and I've been building as per the instructions. Does anyone know of an easy way to install the center shaft ? Or is it more of a case of not bothering with all 3 and just going with the 2 ? Btw I have part 18, but conctruction halted over christmas due to the need for getting a dolls house built for my neice. photos of the Bismarck on my website in the gallery. gannetweb.awardspace.com
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Post by eric on Dec 30, 2007 14:25:33 GMT 1
Hi Skyfire, welcome!
The best info you can get regarding the centre shaft insatation is to be found in the German RC thread, read it through from the begining. I know it is long, but there is so much good info and advice to be had.
I personally went for the two prop set up from Markus, I felt that as this is my first build I should not over extend myself. The amount of surgery required to fit the centre shaft looked beyond me!!
One thing is clear though, if you do choose to make it a three prop set-up, you are best to do the cutting out BEFORE you begin planking. Good luck!!!
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gerry
Deck hand
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Post by gerry on Mar 31, 2008 2:44:41 GMT 1
G.Day Guys.I think i have solved the problem with the Bow Deck. I decided to hold all the decks with Button Magnets. These Magnets are very powerful for their size .25" in diameter by .1" thick. At the moment i am in a bit of a quandary regarding the installation of the Motors,Shafts etc. I feel that these items should have been addressed during the original set up,but plod on. I went down to my local Model Shop this morning to make enquiries on suitable Motors etc. I was informed that the way to go was 'Brushless Motors and Controlers,OK seemed a good idea untill i was told the cost plus that the Motor s and Controlers would have to be Water Cooled. I left the premisses a little dispondant. 20 years ago i built a UBoat about 6ft long and fittet Two motors driving the screws and another motor driving the Pump,no problems,It dives,surfaces and chases the Ducks with no sign of heating from the Motors or the Speed Controller which are in enclosed watertight compartments. So much for modern Motors. I am now looking for three suitable Motors(brush type) plus controler as i do not wish to remove the units from the Uboat. Any suggestions as to suitable Motors/Controlers. I sometimes see adds on ebay from China,anyone had any dealings?
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Post by Mark on Mar 31, 2008 4:09:21 GMT 1
Hi Gerry,
Brushless motors are great if you want to go charging across the pond at warp 9, but a tad OTT for a scale warship. Marcus set-up seems pretty good, but any motors about the same size should be fine. Something similar to your U-boat should also be fine. I would go for 2 speed controllers and a mixer so that you can use scale props and assist the turning by throttling down the inboard prop. The mixer will do this automatically.
Basically, what I'm trying to say is that this is a relatively low powered model, so you don't need exotic (read expensive) motors/controllers.
Never brought anything from a Chinese Ebayer. I use a couple of the sellers in Singapore/Hong Kong. They have good feedback and I've never had any problems with them.
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Post by nm on Mar 31, 2008 7:23:06 GMT 1
Welcome, Gerry!
NM
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