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๐ฌ Sanding done
5 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Shucks! Mine are all red ๐ญ
BUT; just found some 1 and 2mm white styrene tooob in the stash ๐ Guess they'll do for my T45, Belfast and Illustrious. Thanks for the prompt Steve1 Cheers, Doug ๐ ▲
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Remove Ads ๐ฌ Sanding done
5 years ago by ๐ฌ๐ง steve-d ( Warrant Officer)
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Just found an answer to my antenna 'White Stick'.
At work we use a WD40 type fluid and the can comes with a tube you can use with the nozzle. Some new cans came in and they have nice white tubes...result. Steve ▲
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RNinMunich
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๐ฌ Sanding done
6 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Hi Steve, many real IMM rod antennas I worked with were not tapered.
So any metal / plastic rod of suitable diameter painted white would do. The relatively short (1m) whips are not always tapered either. If you go piano wire & heatshrink you could put a nice sweep-back into it by lightly bending it back while shrinking. When cool it will hold the shape. Here's a link to the supplier we most often used for the professional 'stick' (we called 'em rod) VHF IMM antenna, with a drawing. ▲
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Inkoust
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๐ฌ Sanding done
6 years ago by ๐ฌ๐ง steve-d ( Warrant Officer)
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Those antenna are normally tapered so I was hoping to find a soft plastic one which would take a few knocks. I could do one in piano wire but cant think of a flexible way of achieving the taper. Perhaps I am making to much of it and a piece of piano wire covered in white heatshrink will do and the lack of taper won't notice.
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Inkoust
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๐ฌ Sanding done
6 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Hi Steve, for the 'white stick', the VHF IMM band antenna, any old rod will do.
The real ones are copper wire covered in glass fibre. Length of the real thing is about 107cm including the coaxial end feed connector at the bottom. They are usually mounted on a 'scaffold' type pole with two U clamps. On pleasure craft they are often just whip antennas approx 1m length, much much cheaper than the pro jobs ๐, with a dome shaped mounting and the antenna cable is fed into it through the deck/roof it is mounted on. Alternatively there is a side connector in the mount with an 'N' Type coaxial socket. Make a whip out of piano wire (with a ball on the top to protect your eyeballs!๐) and you could use it as your RX antenna - about the right length. Construction coming on nicely.๐ Cheers, Doug ๐ ▲
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๐ฌ New bits
5 years ago by ๐ฌ๐ง Dave J ( Leading Seaman)
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Component shop without a doubt...fast del and cheap as chips and Quality products
Dave ▲
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๐ฌ New bits
5 years ago by ๐ฌ๐ง Rookysailor ( Commodore)
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Hi Steve, The lipo situation is I always use HobbyKing
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง ChrisF ( Lieutenant Commander)
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An outrunner is better for this type of boat as it is more torquey. if cooling is needed (and it may not) just use a proper water cooled motor mount. Chris
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Remove Ads ๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
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I cannot see how you can mount the water cooling coil safely onto a out runner motor. Near impossible I would have thought. if there is too much vibration then I would think that it would rub on the motor and wear a hole in it and flood the boat or just jam up the motor. I would go for an in runner. Much more practical in a boat in my thoughts.
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง steve-d ( Warrant Officer)
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I'm new to this and was told by the guy who gave me the motor that this was the thing to do. He says the coil still provides cooling and says the warm water coming from the stern is all the evidence needed.
We will see if he is right. Steve ▲
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Robidoo
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
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Why would anyone even try fitting a water cooling coil on an out runner ?????? I didn't realise that an out runner was what was going to be used. is an out runner worth fitting in a model boat, surely an in runner is a far better option.
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๐ฌ Cooling coil
5 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Hi Dave,
the whole point here is that it's an outrunner motor so if the coil touches the rotating case things'll get very interesting and exciting ๐ฒ Cheers, Doug ๐ ▲
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง Dave J ( Leading Seaman)
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As long as the coil toutches the motor you will be ok if it is NOT touching then simply start agaain as it will b a waste of time.............................................With regards to your painting question simplest way is to go to halfords and buy grey primer with is acrylic....if it is a wooden hull then you WILL NEED to use a coat of Halfords or Equivellent car laquer to seal the primer underneath ...rub down with 800 DRY then put your grey on top of it....reason for this is simple the primer is porous so you will need to stop water getting at the wood,if it is GRP then no need for this
Dave ▲
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๐ฌ Cooling coil
5 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Thanks Boatshed & Chris, those were exactly my thoughts๐
Glad you said it first ๐ Without direct contact between heat source and sink it's a bit of a waste of time and effort.๐ค Cheers, Doug ๐ ▲
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Donnieboy
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง ChrisF ( Lieutenant Commander)
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Yes, that is what was thinking. Normally with brushless motors it is the motor mount that is water cooled which draws the heat out of the motor. it may not need cooling anyway.
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Donnieboy
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
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I have one on a 540 brushed motor which is a reasonably tight fit on the motor. Also I have a Graupner on to fit Graupner 400 speed motor and that again is a quite tight fit. There is no gap between the motor and the coil. it is acting as a heat sink so therefore surely it should touch to disperse the heat with the water flowing through it. if it isn't in contact with it then doesn't it make it pointless putting it on there. Also wont it make it rattle about when the motor is running and the boat hopping about on the water ??
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Donnieboy
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง steve-d ( Warrant Officer)
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You are correct the coils goes over the body of the outrunner motor but does not touch. it was initially formed around a metal tube but when mounted on the motor mount there is a 'cereal packet cardboard' thickness of clearance around the body of the motor.
Steve ▲
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง TOWN3810 ( Leading Seaman)
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Hi it might be the wine but it appears you have put the cooling coil over the rotating rotor of the brushless motor should be fun when you connect up and run. if it is the wine I will shut up Cheers Ian
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5 years ago by ๐ฌ๐ง ChrisF ( Lieutenant Commander)
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Hi Steve - yours is 1:12 then which is the scale I'm building all mine at.
Yes, the building is the best bit (and the drawing in my case) as I doubt I will use them that much. Where did you get your bollards etc. from as I shall need to start getting those bits and pieces together. Chris ▲
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง steve-d ( Warrant Officer)
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This one is 31".
Making things difficult for myself by trying to model it on a specific boat. Having said that the building is the bit I like best. Steve ▲
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง ChrisF ( Lieutenant Commander)
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Good to see another Fairey. What size is your Huntsman? I'm busy scratch building three different Faireys at the moment and the Huntsman 31 will be a future project.
I've got one of the Precedent 46" but it's too big and heavy really. Chris ▲
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๐ฌ Cooling coil
5 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Don't suppose it will matter much Steve, since the cooling comes from the wet stuff and not air flow. And as you say it makes the assembly more stable. Cheers, Doug ๐
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๐ฌ Cooling coil
5 years ago by ๐ฌ๐ง mturpin013 ( Admiral)
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I agree not necessary to solder, as long as the coils are tight with no gaps
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Donnieboy
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๐ฌ Cooling coil
5 years ago by ๐จ๐ฆ Donnieboy ( Warrant Officer)
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All the cooling coils I have seen,do not have the coils soldered together.On all the ones I have weren't soldered.They all provide the cooling very well.
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๐ฌ Re: mini update
4 years ago by ๐ฌ๐ง ChrisF ( Lieutenant Commander)
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Hi - I think he is talking about the pickup for the water cooling rather than the prop shaft?
Chris ▲
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Remove Ads ๐ฌ Re: mini update
4 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
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Hi Wingcoax, I was just having a meander through some of the build blogs over the last few days and I have just seen your comment. Why do you say about installing the shaft offset to one side? Also which side, I have been building model boats for the last 60 years and have never made a point of doing this. There must be a reason why you say this.
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๐ฌ mini update
5 years ago by ๐ฌ๐ง Brianaro ( Petty Officer 1st Class)
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๐ฌ mini update
5 years ago by ๐ต๐น Wingcoax ( Petty Officer 2nd Class)
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This has been asked before, But, normally installed just after the prop and offset to one side.
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Donnieboy
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