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    Small plastic gearbox 90 degree (right angle drive)

    david f
    david f
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    Small plastic gearbox 90 degree (right angle drive) Empty Small plastic gearbox 90 degree (right angle drive)

    Post  david f Mon Feb 18, 2013 10:11 am

    Anyone know where I can get these? The idea is to transfer a small (300 series) motor drive through 90 degrees. A small reduction (3:1 say ) would be handy but not essential

    The gearbox needs to be quite small (20mm cube, light, rustproof and cheap. (I need about 4) I know I don't want much!

    Nothing on ebay. Nothing on MFA. Any other suppliers you can suggest?

    David
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    Tom(ADMIN)
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    Post  Tom(ADMIN) Mon Feb 18, 2013 10:29 am

    Have you checked RC-Sub shop on eBay, David? Or failing that, how about Tamiya...dont they do them for their tanks? Another one just popped into my mind...Howes Models in Oxford? www.howesmodels.co.uk

    http://www.ebay.co.uk/itm/Tamiya-70093-3-Speed-Crank-Axle-Gearbox-Kit-/380519696811?pt=UK_ToysGames_RadioControlled_JN&hash=item5898bdc9ab
    david f
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    Post  david f Tue Feb 19, 2013 10:41 am

    Thanks Richard!

    That looks very promising - I will get one and have a go with it.

    David
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    Tom(ADMIN)
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    Post  Tom(ADMIN) Tue Feb 19, 2013 10:48 am

    Another satisfied customer!
    david f
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    Post  david f Fri Mar 01, 2013 2:14 pm

    My Tamiya gearbox has just arrived and looks very promising. Thanks for the tip.

    A nice bit of kit but it needs assembling and why is everything smaller than the way you imagined it!

    David
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    Tom(ADMIN)
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    Post  Tom(ADMIN) Fri Mar 01, 2013 2:51 pm

    Shoulda gone to Specsavers...
    david f
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    Post  david f Thu Mar 07, 2013 4:06 pm

    Now assembled.
    A nice little motor and gearbox combination that fair whizzed around when I applied 12v to it. (No voltage mentioned in the instructions.) Smoke appeared 30 seconds later! Now dead.

    Oh dear what do they run these Tamiya vehicles on a couple of pencells?!

    David
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    Tom(ADMIN)
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    Post  Tom(ADMIN) Thu Mar 07, 2013 4:09 pm

    Oh dear, David...not the escape of the magic smoke? Maybe a start at low voltage would have been a better idea.

    Can you swap the motors over?
    Dagon
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    Post  Dagon Thu Mar 07, 2013 6:15 pm

    That motor is rated for 3 volts, 12 volts is overpowering it a bit!

    http://www.technobotsonline.com/tamiya-70093-3-speed-crank-axle-gearbox.html

    Have you considered gearsets from slot cars? They usually use crown wheel sets, giving the 90 degree angle, and tend to be geared down about 2 or 3:1.

    You can get slot cars in many scales from 1/24th down to 1/72nd, so you should be able to find gears small enough.
    orca
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    Post  orca Sat Jul 13, 2013 4:00 pm

    Don't know if you sorted this but I use rc helis. 450 size or smaller use belt drive tails that have 90 degree gearbox. Might work?
    Deep Diver (Fred)
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    Post  Deep Diver (Fred) Sun Jul 14, 2013 9:51 am

    David give E.M.A model supplies a try, ask for a catalogue it is free, but they do have a £15.00 min order.
    david f
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    Post  david f Mon Jul 15, 2013 8:31 am

    Thanks for the suggestions, chaps. (EMA is a new one to me and looks very interesting.)

    In the end I bought 4 of the Tamiya gearboxes for the Nordenfelt project. They look fine (with or without the 3v motors!) They have not been fitted yet while I get on with the fibre glassing. Gorgeous weather for everything!

    David

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