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Author Topic: Suitable motors for model ship radar?  (Read 7335 times)

justboatonic

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Suitable motors for model ship radar?
« on: February 26, 2017, 08:19:54 pm »

Thinking of my next boat which is likely to be another Model Slipway kit. Havent decided which so likely one of Conserver, Tsekoa 2 or maybe Wyeforce which mean 1\24 or 1\32 scale. Since these arent speedy vessels I tend to use 12v gel batteries to power the motor.

To add a little more realism, I want to rig up a rotating radar with a speed of roughly 60 rpm. I dont want to be spending daft money on a miniature motor with a slow rotation speed if I was ever lucky to find suc a thing.
 
For radar power, Im thinking maybe 1.5v but happy to take suggestions. If anyone has a simple (and I mean simple) wiring diagram how to step down the 12v motor supply to a suitable radar power supply, even better!

So, Im presuming Im either going to have to gear something down (small cog on motor pinion, larger cog on radar shaft?) or run at say 1.5v instead of 6v (but Im presuming that might not give smooth rotation as the motor struggles with the low voltage?).

Help! Any suggestions how to move forward as possible actual gearing and suitable motors for turning radars? How have others tackled this?

TIA
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Stavros

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Re: Suitable motors for model ship radar?
« Reply #1 on: February 26, 2017, 08:49:23 pm »

Have you seen this
https://www.mr-rcworld.co.uk/shop/radar-motor-gearbox/

....worth a look




Dave

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cos918

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Re: Suitable motors for model ship radar?
« Reply #2 on: February 26, 2017, 09:14:24 pm »

Component shop do a nice little motor and gear box. They also do a voltage reducer . This will drop the 12v down to 1.5v to 3v to operate the motor for the rader


John
http://www.componentshop.co.uk/mini-dc-gear-motor.html
http://www.componentshop.co.uk/voltage-reducer.html
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Stan

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Re: Suitable motors for model ship radar?
« Reply #3 on: February 26, 2017, 09:52:02 pm »

Hi p/m sent I will be at Ellesmere Port this weekend you can see these small units running.






Stan.


Kirklees Model Boat Club.
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dougal99

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Re: Suitable motors for model ship radar?
« Reply #4 on: February 26, 2017, 10:13:49 pm »

I use a motor from Dean's Marine running on 1.5v. It ran for five full days at Dortmund on one AA cell and then some.
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Stan

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Re: Suitable motors for model ship radar?
« Reply #5 on: February 26, 2017, 11:06:11 pm »

I would recommend the small unit from component shop and a voltage regulator. I have sent you a further pm.




Stan
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flack

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Re: Suitable motors for model ship radar?
« Reply #6 on: February 27, 2017, 12:23:36 am »

I have used the Component Shop small geared motor and voltage regulator on all my lifeboat radars very successfully and would recommend them  - both items are less than a tenner in total.

Shaun
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justboatonic

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Re: Suitable motors for model ship radar?
« Reply #7 on: February 27, 2017, 01:50:10 pm »

Thanks for the suggestions all.  :-))
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Dave Cook

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Re: Suitable motors for model ship radar?
« Reply #8 on: February 27, 2017, 06:58:31 pm »

Totally,agree with Stan i have them units with no issues.

Dave :-)) :-)) :-)) :-)) :-))
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T888

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Re: Suitable motors for model ship radar?
« Reply #9 on: February 27, 2017, 07:50:21 pm »

I've used these for my model radar drives, the  206-109 running on 1.5v may be worth looking at.


https://www.precisionmicrodrives.com/product-catalogue
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steamboat66

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Re: Suitable motors for model ship radar?
« Reply #10 on: February 27, 2017, 08:36:16 pm »

action electronics M7G.
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justboatonic

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Re: Suitable motors for model ship radar?
« Reply #11 on: March 04, 2017, 09:08:14 pm »

well that's a b*gger, Model Slipway have now gone and withdrawn Conserver  :((
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nivapilot

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Re: Suitable motors for model ship radar?
« Reply #12 on: March 09, 2017, 08:19:48 am »

Bummer.....
I used a mini servo for my radar, converted to continuous rotation, took out the circuit board and used the potentiometer to set the speed, switched from a channel on the radio................only drawback is the noise from the servo gears......still working on it.
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Onetenor

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Re: Suitable motors for model ship radar?
« Reply #13 on: March 11, 2017, 05:48:21 am »

Component shop do a nice little motor and gear box. They also do a voltage reducer . This will drop the 12v down to 1.5v to 3v to operate the motor for the rader


John
http://www.componentshop.co.uk/mini-dc-gear-motor.html
http://www.componentshop.co.uk/voltage-reducer.html


Another source of small coreless motors for low low voltage is  Bang Good  very cheap Also holders for them  which allow gearing to be fitted.They take a while to arrive but worth waiting for. A good browse of their site is worthwhile as there are loads of useful bits and pieces which can surprise you sometimes In as much  that they will give you ideas you won't have thought of. Do yourself a favour and really dig in the site.John Mantova
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murphy1570

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Re: Suitable motors for model ship radar?
« Reply #14 on: March 13, 2017, 09:54:26 pm »


Hello folks,


Would these small units from "Component Shop" also be suitable for turning other small "gadgets" on something along
the lines of perhaps a Clyde Puffer, tramp steamer, fishing vessel or even a gun turret,  etc ?
Excuse my ignorance of things electric, I have been looking for some time for what appears to be a foolproof  method
of getting things to move on a model without complicated (to me) wiring etc. I hope I have found it at last !!!


I stumbled across "justboatonic's" post and your replies and think I will order a couple of these units, motor with gearbox and a
 reducer x2 of each, knowing me I am likely to break something or blow it up!!,


If you guys don't mind I will probably still be looking for more advice on their operation, if I cant suss it out from the instructions
which I hope accompany the units, in a form even I can understand as all thing electric are an alien environment to me!!


Thanks folks all the best.


John.



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Stan

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Re: Suitable motors for model ship radar?
« Reply #15 on: March 14, 2017, 08:19:59 am »

HI Murphy 1570 these small units even when running at 2 volts have steady turn of speed and would not be suitable for your needs. What are you wishing to turn  /drive?

Stan.
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John W E

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Re: Suitable motors for model ship radar?
« Reply #16 on: March 14, 2017, 04:09:49 pm »

well howdy there

just received this morning, from Hongy Kongy via Ebay :-) one of the miniature motors and gearbox for the pricey sum of wait for it ..... £4.00 UK pund notes

its an ideal motor for driving a radar on 3 volts - although the motor is actually rated between 6 and 12 volts.    I notice on an earlier posting a similar motor has been mentioned.

Here are a couple of pics of the motor I have received.
http://www.ebay.co.uk/itm/191870746996?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT


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Stan

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Re: Suitable motors for model ship radar?
« Reply #17 on: March 14, 2017, 04:44:58 pm »

HI Blue bird sorry to say this is not what I have fitted to 1062 and the new fishing boat.I could not hide away this unit in both of the mentioned models. But I do have some of these and if space is no problem they will be fine.

Stan.
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tr7v8

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Re: Suitable motors for model ship radar?
« Reply #18 on: March 14, 2017, 04:52:10 pm »

I'd  use a cheap micro servo
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Jim

John W E

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Re: Suitable motors for model ship radar?
« Reply #19 on: March 14, 2017, 05:20:52 pm »

Hi there St an :-) I was thinking of mainly using this motor and gearbox for a small anchor winch on a model I have planned and it was just a thought that it would be handy to someone for a small radar drive.   Here is a comparison (to give you an idea of the size) - standard servo on the left of the pic below & a mini servo to top   right :-)

john
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Stan

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Re: Suitable motors for model ship radar?
« Reply #20 on: March 14, 2017, 07:03:36 pm »

HI Blue bird I would agree these motors would be ideal for anchor  a winch and if space is not a not a problem just the job for radar drive.

Stan
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murphy1570

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Re: Suitable motors for model ship radar?
« Reply #21 on: March 16, 2017, 11:25:29 pm »

Hello Folks,

Many thanks for all your responses which have answered most of my questions, I think I will order a couple of motors
and voltage reducers, and also a couple of the motors described by "bluebird", I think at the prices they are
selling for it is worth trying them out.

Thanks again folks, all the best.

John.
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