Revolving display stand - lateral thinking required !

[Adrian]

The centre of the shaft currently has a set of teeth formed along its axis, this is the final drive. However, if I whip out one or more of the gears then the thing can 'freewheel' (it's actually running on ball bearings) - so I could then apply drive via a belt on the outside of the turntable casing..

You're thinking the same way as me Lack of skyhooks makes this one a bit of a problem - and in open-air markets there's often a bit of a breeze, sometime more of a gale - anything that 'hangs' is going to get blown about something rotten !

Thanks for the thoughts

Adrian

[Adrian]

Yes - trouble is it all starts getting a bit complicated, and it's another thing to forget to bring along !

Many thanks Adrian

[Adrian]

Sounds good....

I wonder what the chances are of an 'edge driven' scheme (like on cheapo vinyl turntables) with enough coupling to turn the thing but not so much that the coupling can't slip when stalled....?

Might need some fine adjustment..?

Thing is - all this would need is some kind of drive surface on the turntable rim, a bit of rubber sleeving on the motor spindle and some form of bracketry to hang the motor on.....

hmmm....

Thanks Adrian

[Adrian]

Nice plan - but the market stall's only 5ft long ! Regards Adrian

[Adrian]

Been there - done that.... That's where it is at the moment

That's a nice thought - might try that....

Now don't get all scientific with me ! The markets are outdoors - and so power sources are at a premium...

Thanks Adrian

[Adrian]

Yes - I was working my way round to that...

I suppose an alternative solution if the belt drive straight from the motor was going too fast, would be a simple '555-type' chopper circuit

- and drive the motor with that. Could then adjust for the required speed.....

Thanks Adrian

[Adrian]

Yes - as you can see from the above it seems that an alternative drive strategy is required ('cos my quick fix didn't) - so belt or direct drive to the edge of the platter looks like it might be an answer....

I guess a really 'cool' plan would be some sort of magnetic coupling....

Thanks Adrian

[The Medway Handyman]

I saw it as a sticker distributors put on Karcher machines when I worked for them. Quite appropriate.

[Andy Hall]

Are distributors of limited ability and intellect in that industry as they are in others?

[The Medway Handyman]

Andy Hall wrote: .

Hmmm. Limited intellect possibly, but they tend to know their stuff on a technical basis. Very much a hands on industry, very practical, limited bulshit.

[Chris Hodges]

And cheap and easy to replace when it does wear out.