Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Navy - Military - Battleships: => Topic started by: chromedome on August 29, 2006, 04:35:16 pm
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I have converted a servo to turn 360,but not quite sure what i need to connect a drive shaft to it...its for a 1960 1/96 scale Tribal....if someone could point me in the right direction please?
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find a screw that fits the hole where the horn used to go. fix this screw into into a tube long enoughto go where you want. screw this into the servo and bobs youre aunty.
colin
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I put a servo driving my main Radar on a Tribal.
Wot a racket, even heavily greasing the gearbox didnt make much difference.
Model Motors Direct have some small geared motors or some on ebay.
Just a tip, if you find some buy a few, I am down to my last 2 small swiss motors, I bought 10!!
Bob
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Bob try
http://www.fastcomponents.co.uk/ they do lots of small drives Peter
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NO it was directed to the person who said he was down to his last two, chromedome already has one..Peter
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OK folks...thanks so much for that.
George
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dont know how you are getting noise, mine have always been quiet.
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Paul,
Ships radar motors are quiet, there is surprisingl little noise on board a running ship outside the Main Engine and Generator noise frequency range.
You can hear intermittant punp motors start from several decks away.
Bob
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Should kick the maintainer then!!
Bob
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Paul,
Ships radar motors are quiet, there is surprisingl little noise on board a running ship outside the Main Engine and Generator noise frequency range.
You can hear intermittant punp motors start from several decks away.
Bob
It would depend on the type of ship I suppose but warships do have a lot of stuff on hem to make niose. I did 8 years on type 42 destroyers, the engine intakes and engine room vents are very noisy, stood on the fo'cle is fairly quiet but you can hear the roar of the intakes at almost any position, especially at speed. If at action stations you have all four diesel generators and both olympus engines sucking in and expelling air, hydraulic pumps for the launchers etc. The general rumble of the ship at anything above a few knots is quite loud.
I dont mind a my radar motors making a little noise, my ESC's tend to make a bit of noise at slow speeds but as soon a it's a few feet away you can't hear it.
just my 2p worth
bart
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Rather than use a converted servo, an easy solution once seen in one of the boat mags was a friction drive, rubber driven wheel and just the motor shaft rubbing against it.
easier to align, quiet and cheap
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I like that Grasshopper....i might even think of using two little velcro discs??
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I found the servo option worked quite well but was very noisy, so I obtained several dead vcr machines from the local repair shop and use the small drive motors found within, work perfectly quite and use very little power when operating..
Roy
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You could always buy yourself some dwarf hamsters and install a little wheel in side your boat.......... ::) ::) ::)
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The friction drive idea came from one of the magazines years ago.... maybe I should be called squirrel and not grasshopper - I have a double garage full of 'stuff'
I tend not to throw anything away until I've stripped it to see if it's got anything useful.
One of the best places for friction drives are old cassette and micro cassette players, include walkmans etc - also old cd drives etc.
the velcro discs might not be that good though, and the 'ripping' noise might be a bit off putting.....
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A kind of candy sell in some sweet shop. It is a ball type and a stick fix with a handle, use a AA battery that the candy will rotate .
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dont know how you are getting noise, mine have always been quiet.
depends on the servo.
I have one servo modded as a winch (futaba 3003) and another servo for a radar, (un branded out of rtr model) operating on 2 cells. the radar servo is several times noisier than the winch servo, so i suppose it is down to the individual make of servo.
that aside, having stood on the deck of the now closed exhibit HMS Plymouth whilst it was open, they ran the large sweep array atop the mast head and it was quite noisy
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Cassette tape motor.
Has a speed adjuster on the case.
They are so quiet you cant hear them.
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http://www.action-electronics.co.uk/pdfs/M7G.pdf
We sold 23 of these just this weekend..............works for someone?
Suiit yourselves.
FLJ
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Hi FLJ.
Yass!
There is a mistake in the first diagram in the pdf link. PM coming!!!
There is also an opportunity to sell an LM317 with each of these motors on 4-12 volts.
Current mode might be best.
Who cares to try?
Regards
Sandy Calder
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Hi FLJ.
Yass!
There is a mistake in the first diagram in the pdf link. PM coming!!!
Regards
Sandy Calder
Now sorted! Thanks, Sandy.
FLJ
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For those that demand radar rotation at 14.4 RPM ,or whatever,a minimum of three components will maintain that rate.
(http://i371.photobucket.com/albums/oo158/sandy_calder/th_solar_motor_speed.gif) (http://s371.photobucket.com/albums/oo158/sandy_calder/?action=view¤t=solar_motor_speed.gif)
D1 - D3 are to protect the LM317 regulator.
The LM317 is all that is required for a fixed 1.25 volts
For more information on the LM317 voltage regulator see http://www.national.com/ds/LM/LM117.pdf (http://www.national.com/ds/LM/LM117.pdf)