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Recent Posts
📝 Double Bit Bollard
4 years ago by 🇬🇧 Stour-boy (
Leading Seaman)
Leading Seaman)✧ 6 Views · 1 Like
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Hi ,not sure what your scale is but I have used spent .22 brass cartridge cases for bollards .
Steve.
Steve.
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💬 Hatch & Tow Bitts
5 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 5 Views · 2 Likes
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Hi, just to add a tip re making the bits, I used to do a lot of
Small bore rifle shooting and the spent .22 brass cases were very useful for making them,they cut,shape and solder easily and are strong.
Have a good new year,
Stourboy
Small bore rifle shooting and the spent .22 brass cases were very useful for making them,they cut,shape and solder easily and are strong.
Have a good new year,
Stourboy
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Donnieboy
📝 Hydrofoil
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 6 Views · 0 Likes
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Hi Dave I am utterly lost I have no idea how to cut and paste let alone a URL ! I will be going thro the links/sites suggested but a blog could be a long way away. I tend to look thro ideas turn them over pick out the best bits suitable for the application and my dexterity.
Thanks for your concern.
Steve.
Thanks for your concern.
Steve.
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📝 Hydrofoil
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Hi onetenner, I don't follow as to what you mean in that last post, would you mind clarifying.
Thanks.
Steve.
Thanks.
Steve.
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📝 Model Shipwright magazine
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 3 Views · 1 Like
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Hi Doug, no I do not want to get rid and of them, if I had the relevant mag he was after I would have copied the relevant article for him, that's all,have a good day.
Steve.
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📝 Hydrofoil
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 6 Views · 0 Likes
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Hi Doug,what a lot of information you have sent , I will put some time by to filter through that lot thank you very much.
Steve.
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📝 Hydrofoil
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 6 Views · 0 Likes
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I intend to use the boat as I haven't seen any hydrofoils on the pond but plenty of fire boats. Are there any plans available?
Steve.
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📝 Model Shipwright magazine
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 3 Views · 1 Like
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Hi Westquay, I Have some copies of the Model Shipwrights magazine was there any particular one you have in mind ?
Steve.
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📝 Hydrofoil
7 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 6 Views · 0 Likes
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Hi shipmates, has anyone ever made a hydrofoil for a model boat,
I have got a wooden fire /sea rescue boat single screw which to me seems about right for a hydrofoil system.
So where do I start ????? any ideas ?
Steve.
I have got a wooden fire /sea rescue boat single screw which to me seems about right for a hydrofoil system.
So where do I start ????? any ideas ?
Steve.
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📝 Schottel drives
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Edward,the assembly as you put is in the shape of a harbour tug called, W.H.Parr, and operates in Port Nelson N.Z. I wanted to build this tug as it is named after my mothers cousin. it was built in Dunedin in the early 70s. I was able to obtain some drawings and have built it from scratch, I have had some help and guidance from club members. it got its bottom wet last Wednesday for a brief period, it sits square on the water but slightly bow down so a little bit of shuffling about with batteries might get me somewhere !! I am a bit reluctant to add weight at the moment but I built it to carry 2, 12v.7amp lead acid batteries.
It's scale is 33 to 1 which makes my model 2' long so it's a bit tight for space inside.
If you look up W.H.PARR on the internet you should see what I am building.
Steve.
It's scale is 33 to 1 which makes my model 2' long so it's a bit tight for space inside.
If you look up W.H.PARR on the internet you should see what I am building.
Steve.
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📝 Schottel drives
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Edward,experiences so far, to fit the unit into a hull you have to dismantle the drive by removing the gear retaining circlip and then pull of the large crown wheel,mine were both very tight,then lift of the rudder gear wheel you can then remove the lower gear assembly. The plastic tube that forms the upper part of the lower housing that turns in the mounting(still with me)? I put some felt inside and put some engine oil in so that it can be turned upside down and still retain a bit of lubrication. This was before I was aware that the lower section is lubricated with water!!! On fitting it into a the boat the supplied circlips had to be replaced because I was a bit heavy handed so I found some s/s circlips. One drive is a bit noisier than the other but early days yet.
Steve.
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📝 Schottel drives
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 4 Views · 0 Likes
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Cenbeth,have you had any experience with these drives ?
Steve.
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📝 Schottel drives
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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I phoned the shop that I bought them from and they were no help at all. Then I contacted their suppliers through info found on the box that the drives were supplied in and it seems that the lower gears are lubricated by the water that they are submerged in so don't need grease,but the top gears are lubricated by a light lithium based grease. So there we have it. Thanks for your input John.
Steve.
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📝 Schottel drives
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Hi Guys, Are the cem Schottel drives pre lubricated? Just about to fit them into a tug.as you have to dismantle them to fit them I have found that the upper gearing is bone dry, due to the cost of these units I don't want to find out the hard way.
Steve.
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📝 BEC Circuits.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Good thinking hubsy ,the lighting switch could also bring in a relay a double pole one,one side for servo feeds and the other for main battery feed. Use a nylon pull cord and bobs yer uncle 😑
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📝 BEC Circuits.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Just an idea I am going to use on my club500 is a small lighting pull switch the type with a cord this can be passed through the hull in a thin plastic tube to reduce any water ingress,this will sav removing the top too often, will let you know at the end of the season or if I get an early failure will let you know sooner.
Stour boy.
Stour boy.
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📝 Servo current draw.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Thanks for your input gents looks like a big rethink is on the cards. Dave I think that YouTube video is a bit over the top for my little tug.withall the heavy engineering I am surprised that there were not any metal bracing so between the drivers and driven gears. I will contact the servo shop to see what they recommend.
Havelock there isn't any provision for a pull pull system so I will beef up the control rod by soldering/reinforcing it.
And yes they are the Schottel drives that I will be using. Thanks agaI n
Steve.
Havelock there isn't any provision for a pull pull system so I will beef up the control rod by soldering/reinforcing it.
And yes they are the Schottel drives that I will be using. Thanks agaI n
Steve.
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📝 Servo current draw.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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HI Dave,thanks for the reply, I Take it that VE means positive ? As Haverlock and yourself use the expression. The drives I am using are the CEM 040 Schottel drive units on a 2ft long tug so I think it will be a (suck it and see) situation.
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📝 Servo current draw.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Thanks for that Haverlock,what a can of worms,there are at least 2500 different types so where do you start when deciding which ones to use ?
Going back to the feeds for the servo it looks like the three wires are pos,neg and what I call a trigger wire,so as long as they come from the same power source that's fine ?
I am building a harbour tug with azimuth schottel drives with 180 degree steering and using astern for the other 180 if that makes sense both drives independent of each other. is there a gyroscopic reaction that would make it necessary to use heavier servos ?
Going back to the feeds for the servo it looks like the three wires are pos,neg and what I call a trigger wire,so as long as they come from the same power source that's fine ?
I am building a harbour tug with azimuth schottel drives with 180 degree steering and using astern for the other 180 if that makes sense both drives independent of each other. is there a gyroscopic reaction that would make it necessary to use heavier servos ?
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📝 Servo current draw.
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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My question is,what sort of current does the average servo draw and at what voltages do they operate?
Stour-boy
Stour-boy
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📝 electric v drive
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Thanks pmdevlin,nice bit of engineering especially the motor cooler the belt drive would take a fair bit of power from the motor but you wouldn't have to disturb the propshaft alignment when changing motors or pulleys, good photos thanks again.
Steve.
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📝 electric v drive
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 2 Views · 0 Likes
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Thanks Gents, I will put this project on hold for a while and think about the system whilst doing catchup on my other boats , when I think about it a V drive is not required with an electric motor ,but a parallel drive is a good idea as it puts the motor lower down and reduces the length of the drive and also gear ratios can be varied provided the pulleys can be readily changed
Have a good new year.
Steve.
Have a good new year.
Steve.
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📝 electric v drive
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Thanks Edward will look on their site,
Steve.
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📝 electric v drive
8 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 2 Views · 0 Likes
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HI Guys,
I have seen pictures of a v drive system,motor under shaft and reduction gearing mounted on engine mounting bracket with NAVY in the title. Can anyone enlighten me as to who makes it and where I can get one,
I am also looking for 2 schottel drives ,
Thanks for reading.
Steve.
I have seen pictures of a v drive system,motor under shaft and reduction gearing mounted on engine mounting bracket with NAVY in the title. Can anyone enlighten me as to who makes it and where I can get one,
I am also looking for 2 schottel drives ,
Thanks for reading.
Steve.
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📝 CLUB 500 BOATS SHAFTS SEIZING
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
Leading Seaman)✧ 4 Views · 0 Likes
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In that situation you would have a stuffing box on the end of the prop shaft tube motor end with a seal. Anyway it's quite normal to get water ingress through the prop shaft. At least it should stop it seizing. Also the forward motion of the boat would tend to drag out any water in the tube !! in theory anyway.
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📝 CLUB 500 BOATS SHAFTS SEIZING
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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I am just asking about the acetate, the only acetate That springs to mind is used in nail varnish and I don't see the bearing connection either, hence the question mark.
Read pm devlins post.
Read pm devlins post.
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📝 CLUB 500 BOATS SHAFTS SEIZING
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Acetate as in nail varnish ?s
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📝 (Tug Boat) Amsterdam
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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Plank on frame,given to me in January 2015 hull good and repainted ,nearly a total refit,made and fitted a balanced rudder,etc. runs and tows well. Very pleased with my first effort.next up is a club 500.. (Motor: FMA) (ESC: Electronics) (8/10)
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📝 CLUB 500 BOATS SHAFTS SEIZING
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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An old trick with lubrication is to mix in some powdered graphite with the oil/grease whatever you are using as this one of the best lubricants you can use, not used it on mine yet as it is not assembled but would be worth a try,
Steve
Steve
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📝 Visit last Sunday
9 years ago by 🇬🇧 Stour-boy ( Leading Seaman)
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HI Guys, thanks for hosting the steering comp. First time I have seen this event ,there was some good manoeuvring and some unlucky competitors who were hampered by the wind ,I enjoyed watching It and Intend to have a go. The club 500 racing was something else!!
Unfortunately one boat overturned and another was holed In the bow this club 500 looks expensive but serious fun.
On another point I notice that when a boat become dead In the water an easy recovery method would be to glue a small square of tin Inside the hull at Its widest point on the waterline area and the recovery boat I.e. your lifeboat I think It was to have one of these strong magnets disguised as a tyre hanging over the side so all one has to do Is to run up alongside the disabled boat and the magnet should do the rest, just a thought with just one boat having the magnet other wise complications could set In,i.e. fatal attraction. enjoy your website and keep em floating.
Stour-boy.
Unfortunately one boat overturned and another was holed In the bow this club 500 looks expensive but serious fun.
On another point I notice that when a boat become dead In the water an easy recovery method would be to glue a small square of tin Inside the hull at Its widest point on the waterline area and the recovery boat I.e. your lifeboat I think It was to have one of these strong magnets disguised as a tyre hanging over the side so all one has to do Is to run up alongside the disabled boat and the magnet should do the rest, just a thought with just one boat having the magnet other wise complications could set In,i.e. fatal attraction. enjoy your website and keep em floating.
Stour-boy.
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