New method for spinning real Ground Glass

Craig Bellaire · September 19th, 2005, 12:57 PM

Just wondered how you attached the Glass to the motor. In the Guide you say to use 3 screws... BUT in the picture you seem to have a different attachment Method...

Wayne Kinney · September 19th, 2005, 12:59 PM

Craig.
Always 3 screws, but with thick rubber washers so the screws will not 'crush' the glass.

Thanks,
Wayne.

Michael Maier · September 19th, 2005, 06:03 PM

What's gyroeffect?

Wayne Kinney · September 19th, 2005, 06:08 PM

Now this is a hard one to explain:D

Its a force that acts on a spinning object. With my spinning glass, there is a resistance to any rotational movement around its own axis, but only around 2 axis, the other two axis other then the one the glass is spinning around

Im not very clear about it, but see here for a more detailed explaination.

http://www.sheldonbrown.com/brandt/gyro.html

Or if your a mathmatician, go here;)

http://print.google.co.uk/print?id=5...kuPE0inm4xA-NY

Thanks,
Wayne.

Michael Maier · September 19th, 2005, 06:12 PM

Ok, but How does it affect performance or use in the real world?

Michael Maier · September 19th, 2005, 06:20 PM

How loud is the adapter by the way?

Wayne Kinney · September 19th, 2005, 06:21 PM

OK,
Basically there is a theoretical resistance against panning and tilting movement. Have I noticed any resistance when using the unit? NONE AT ALL.

My only real concern when first coming up with the design a while back was if the gyroeffect was going to be so strong as to shatter the glass. I now know that this is not the case with my design.

I think the main difference was the macro with the tests with the dvx100? Not sure.

I have a potential buyer wanted to use onto a dvx100a. He would post results with my unit. I dont have access to that kind of equipment, sorry.

Wayne.

Michael Maier · September 19th, 2005, 06:24 PM

Thanks.
Also, I wonder if the results wouldn't be worse with a higher resolution camera like a DVX100 and XL2. I think that happened to the Letus35 is another thread. Somebody said it looked better with a cheaper camera than with a DVX100. Do you have the possibility of testing it with a better camera?

September 19th, 2005, 12:57 PM	#76
Craig Bellaire Major Player Join Date: Aug 2004 Location: Rochester, NY Posts: 422	Glass to Plastic Just wondered how you attached the Glass to the motor. In the Guide you say to use 3 screws... BUT in the picture you seem to have a different attachment Method... __________________ Craig Bellaire www.VerticalVideoSolutions.com

September 19th, 2005, 12:59 PM	#77
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Craig. Always 3 screws, but with thick rubber washers so the screws will not 'crush' the glass. Thanks, Wayne.

September 19th, 2005, 06:03 PM	#78
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	What's gyroeffect?

September 19th, 2005, 06:08 PM	#79
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	Now this is a hard one to explain:D Its a force that acts on a spinning object. With my spinning glass, there is a resistance to any rotational movement around its own axis, but only around 2 axis, the other two axis other then the one the glass is spinning around Im not very clear about it, but see here for a more detailed explaination. http://www.sheldonbrown.com/brandt/gyro.html Or if your a mathmatician, go here;) http://print.google.co.uk/print?id=5...kuPE0inm4xA-NY Thanks, Wayne.

September 19th, 2005, 06:12 PM	#80
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	Ok, but How does it affect performance or use in the real world?

September 19th, 2005, 06:20 PM	#81
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	How loud is the adapter by the way?

September 19th, 2005, 06:21 PM	#82
Wayne Kinney Major Player Join Date: Jun 2005 Location: Brighton, East Sussex, UK Posts: 938	OK, Basically there is a theoretical resistance against panning and tilting movement. Have I noticed any resistance when using the unit? NONE AT ALL. My only real concern when first coming up with the design a while back was if the gyroeffect was going to be so strong as to shatter the glass. I now know that this is not the case with my design. I think the main difference was the macro with the tests with the dvx100? Not sure. I have a potential buyer wanted to use onto a dvx100a. He would post results with my unit. I dont have access to that kind of equipment, sorry. Wayne.

September 19th, 2005, 06:24 PM	#83
Michael Maier Trustee Join Date: Apr 2005 Posts: 1,269	Thanks. Also, I wonder if the results wouldn't be worse with a higher resolution camera like a DVX100 and XL2. I think that happened to the Letus35 is another thread. Somebody said it looked better with a cheaper camera than with a DVX100. Do you have the possibility of testing it with a better camera?