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high speed circular dolly or similar effect.


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#1 ken koller

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Posted 21 February 2012 - 03:48 PM

I am looking for a method of circling my talent at high speeds in combination with high speed photography. I have already looked into Pacific Motion Control's Cheetah dolly and it's speed is too slow for my purposes. Any ideas? Thank you.

-Ken-
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#2 Chris Keth

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Posted 23 February 2012 - 03:25 PM

How many revolutions per minute or per second are you interested in being able to do?
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#3 Chris Millar

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Posted 24 February 2012 - 07:11 AM

At my previous job we part built a dolly track with cambered rails about 6m in diameter. Idea was to only have 180deg of curve - straight run in for speed up and then simply coast (at a great rate of knots) around the 180deg then straight again for slow down.

Yes the cambers made going from straight to curved 'interesting' - there was a plan around it... ;)

360deg of arbitrary revolutions is what you're after ? What diameter ? Do you want it motion controlled ? How heavy a camera ?

Thought about bullet time ?
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#4 Dom Jaeger

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Posted 24 February 2012 - 07:39 AM

For really high speed circling maybe it would be easier (and safer) to spin the talent and green screen the background?
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#5 Chris Millar

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Posted 24 February 2012 - 02:42 PM

You wont have the rig in shot that way either - although, safer ?
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#6 ken koller

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Posted 24 February 2012 - 04:17 PM

To answer your questions.

I'm not sure on the exact revolutions per minute I'm looking for, but I'm visualizing using a phantom for some really high speed stuff and Red Epic for the rest. So when in use with the phantom the revolutions are going to need to be quick enough to make the effect play.

Chris, the curve sounds good for one pass, but I would like to get multiple revolutions.

I would prefer not to spin talent as it will effect wardrobe and props.
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#7 olivier GEORGES

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Posted 24 February 2012 - 05:06 PM

i have the solution with my Speed Ring Machine

you can see my reel on my vimeo


i have testing with phantom at 1rps




Olivier "CASTOR" Georges
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  • PKspeedring.jpg

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#8 Chris Millar

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Posted 25 February 2012 - 08:17 PM

1rps with a heavy rig - nice

How many rps can you go ?

Ken,

So when in use with the phantom the revolutions are going to need to be quick enough to make the effect play.




...best to do some timings of your shot, plan it out






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#9 ken koller

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Posted 25 February 2012 - 09:28 PM

Thank you for all the replies. There are multiple shots however the speed ring at this point is looking like the best bet.
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#10 olivier GEORGES

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Posted 27 February 2012 - 12:53 PM

i have a new motor (for 3 rps ? ) but y a not use and not testing
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