Jump to content


Photo

Shakeboard dolly wheels


  • Please log in to reply
21 replies to this topic

#1 Bob Hayes

Bob Hayes
  • Basic Members
  • PipPipPipPip
  • 1087 posts
  • Cinematographer
  • Culver City, California

Posted 17 March 2006 - 08:57 AM

I have a skateboard dolly from Modern. It has 4 wheels per corner making a total of 16 wheels. I am getting bumping during the move. I think it is because of the wheels going flat while standing. They can be ?rolled out? by moving the dolly back and forth. Do you have any recommendations on different wheels to use? I use the red Modern wheels now.
  • 0

#2 Michael Nash

Michael Nash
  • Sustaining Members
  • 3330 posts
  • Cinematographer
  • Pasadena, CA

Posted 17 March 2006 - 11:57 PM

I think it is because of the wheels going flat while standing.


An inherent problem to skate wheel dollies.

Somebody makes a version with wheels of different diameters, so they don't all flat-spot at the same point during the move. I guess they feel it's better to have several small bumps rather than one big one...

I wish I could tell you who makes that; I can't even remember where I saw it!
  • 0

#3 David Erlichman

David Erlichman
  • Basic Members
  • PipPip
  • 49 posts
  • Grip
  • Toronto, Ontario, Canada

Posted 18 March 2006 - 10:47 AM

An inherent problem to skate wheel dollies.

Somebody makes a version with wheels of different diameters, so they don't all flat-spot at the same point during the move. I guess they feel it's better to have several small bumps rather than one big one...

I wish I could tell you who makes that; I can't even remember where I saw it!


Losmandy (I have no affiliation - just saw their ad):

http://www.porta-jib...porta-glide.htm


I own a set of Jim Charbonneau's "Speed Wheels" and have been fighting the same problem. It's the trade off you have to make. You want a softer wheel to absorb the track joints but a harder wheel to be able to support the weight (generally a Hybrid or Fisher 10 & ops). I just have to roll out the wheels before each take right up till they call 'action' (the focus pullers hate it). I have yet to come across a wheel density that makes everyone happy.

Dave
  • 0

#4 Shawn Murphy

Shawn Murphy
  • Basic Members
  • PipPip
  • 89 posts
  • Camera Operator
  • Seattle

Posted 18 March 2006 - 08:18 PM

I assume this is a rig that's not easily unmounted? With mine (not a 35mm or a seat), I never leave it standing/sitting on the wheels and track for very long, I always take it off the track and stand it on its side.

Edited by Shawn Murphy, 18 March 2006 - 08:18 PM.

  • 0

#5 Bob Hayes

Bob Hayes
  • Basic Members
  • PipPipPipPip
  • 1087 posts
  • Cinematographer
  • Culver City, California

Posted 19 March 2006 - 10:57 AM

I assume this is a rig that's not easily unmounted? With mine (not a 35mm or a seat), I never leave it standing/sitting on the wheels and track for very long, I always take it off the track and stand it on its side.


Once I get the camera on the dolly it doesn?t take long for the tire to get flat spots. Also, by rolling the dolly out, it doesn?t take long to smooth it. However, in the rush of production we forget.
  • 0

#6 ChrisConnelly

ChrisConnelly
  • Basic Members
  • PipPip
  • 29 posts
  • Grip
  • Philly

Posted 19 March 2006 - 07:02 PM

Wheels made of hard polyurethane won't get flat spots, but as others have mentioned they are much less forgiving with bumps and flaws in track.

The Porta-Glide works very well, it is a tad pricey compared to other sleds though (most of which are already pricey).
  • 0

#7 Brad Grimmett

Brad Grimmett
  • Sustaining Members
  • 2660 posts
  • Steadicam Operator
  • Los Angeles

Posted 19 March 2006 - 11:41 PM

I assume this is a rig that's not easily unmounted? With mine (not a 35mm or a seat), I never leave it standing/sitting on the wheels and track for very long, I always take it off the track and stand it on its side.

You obviously haven't seen a Fisher 10! Standing it on it's side would involve at least 2 or 3 big grips. Just putting it on the skateboard wheels take 4 people, so taking it off in between takes would be problematic to say the least.
Check out JLFisher to see pics and specs of the dolly. I believe the dolly weighs about 420 lbs.
  • 0

#8 Shawn Murphy

Shawn Murphy
  • Basic Members
  • PipPip
  • 89 posts
  • Camera Operator
  • Seattle

Posted 20 March 2006 - 02:08 PM

You obviously haven't seen a Fisher 10! Standing it on it's side would involve at least 2 or 3 big grips. Just putting it on the skateboard wheels take 4 people, so taking it off in between takes would be problematic to say the least.
Check out JLFisher to see pics and specs of the dolly. I believe the dolly weighs about 420 lbs.





Actually I have seen a Fisher, and a Panther, and a number of the other larger 35mm rigs, what I haven't seen is one called a "Modern", which is what Bob said he had, hence the reason I said "I assume this is a rig that's not easily unmounted". Are you saying the 'modern' that Bob has is of the same weight/load capacity as a Fisher, etc?
  • 0

#9 Bob Hayes

Bob Hayes
  • Basic Members
  • PipPipPipPip
  • 1087 posts
  • Cinematographer
  • Culver City, California

Posted 20 March 2006 - 05:14 PM

Modern Studio Equipment, Inc. is actually a motion picture fabricating company that makes specialized equipment. They make overhead frames, mounting brackets and skateboard wheels for dollies. The wheels for the large style dollies have 32 skateboard wheels. My style has 16 wheels and mounts on the bottom of a piece of plywood. When assembled it probably weighs 30 pounds as apposed to 400 pounds. The lightweight makes it fast to set up and move.
  • 0

#10 Michael Nash

Michael Nash
  • Sustaining Members
  • 3330 posts
  • Cinematographer
  • Pasadena, CA

Posted 20 March 2006 - 11:44 PM

When assembled it probably weighs 30 pounds as apposed to 400 pounds. The lightweight makes it fast to set up and move.


That also makes it a good "upsatirs" dolly, when shooting on location. Saves having a "dolly party" just to get a little camera movement in that upstairs bedroom...
  • 0

#11 Brad Grimmett

Brad Grimmett
  • Sustaining Members
  • 2660 posts
  • Steadicam Operator
  • Los Angeles

Posted 22 March 2006 - 01:18 AM

Actually I have seen a Fisher, and a Panther, and a number of the other larger 35mm rigs, what I haven't seen is one called a "Modern", which is what Bob said he had, hence the reason I said "I assume this is a rig that's not easily unmounted". Are you saying the 'modern' that Bob has is of the same weight/load capacity as a Fisher, etc?

Whoops. I missed that in his post. Thanks for clearing it up.
  • 0

#12 Shawn Murphy

Shawn Murphy
  • Basic Members
  • PipPip
  • 89 posts
  • Camera Operator
  • Seattle

Posted 22 March 2006 - 02:28 AM

Whoops. I missed that in his post. Thanks for clearing it up.





np ;-)
  • 0

#13 Bernhard Zitz

Bernhard Zitz
  • Basic Members
  • PipPipPipPip
  • 342 posts
  • Other
  • Z├╝rich, Switzerland

Posted 22 March 2006 - 11:32 AM

I have a skateboard dolly from Modern. It has 4 wheels per corner making a total of 16 wheels. I am getting bumping during the move. I think it is because of the wheels going flat while standing. They can be ?rolled out? by moving the dolly back and forth. Do you have any recommendations on different wheels to use? I use the red Modern wheels now.


what Brand of Wheels do you have on your dolly and what hardness do they have?

Some Skateboardwheels and Rollerskatewheels have a larger rim or core that is hard plastic and just on the outside the uretan, these should suffer less from deformation...(hope so)

for example the wheels on the K2 Rollerskates http://www.skates.co...ates_p/8400.htm don't know if you get the wheels only...

or the ABEC11 Downhill-Streetlugewheels http://www.longboard...ca94322c90bbec0

they come in different hardnesses, the 78a or the 81a shouldn't deform to much

or http://www.longboard...ca94322c90bbec0


last week I used a DIY-Skatedolly (4 wheels per corner, total 16) it had the old Kryptonics Rollerskatewheels , they're quiet soft, 72a I think. But no bumping, no flat wheels. We had a SR1, Trypod, Cameraoperator and Focuspuller on the unit... maybe all in all 160-180kg...
  • 0

#14 Michael Morlan

Michael Morlan
  • Basic Members
  • PipPipPip
  • 212 posts
  • Cinematographer
  • Austin, Texas

Posted 15 April 2006 - 08:42 PM

I love my Modern doorway dolly and channel/skateboard wheels setup -- especially when hauling it and the Amarican scissor track onto a rooftop shoot. Clients are always impressed with how solid the setup feels. Now, if I could find a pneumatic arm like on a peewee...
  • 0

#15 Hans Kellner

Hans Kellner
  • Basic Members
  • PipPip
  • 56 posts
  • Other
  • Northern California

Posted 16 April 2006 - 12:00 AM

I have a skateboard dolly from Modern. It has 4 wheels per corner making a total of 16 wheels. I am getting bumping during the move. I think it is because of the wheels going flat while standing.

You might also verify that your track isn't deforming and has divets from where the wheels rest.

Another thought, if your corner wheels are not staggered then that can lead to more bump since a pair of wheels must traverse a bump rather than a single wheel.

Edited by Hans Kellner, 16 April 2006 - 12:02 AM.

  • 0

#16 Ray Perry

Ray Perry

    New

  • Basic Members
  • Pip
  • 5 posts
  • Industry Rep
  • Rhode Island

Posted 08 June 2006 - 06:41 PM

I have a skateboard dolly from Modern. It has 4 wheels per corner making a total of 16 wheels. I am getting bumping during the move. I think it is because of the wheels going flat while standing. They can be ?rolled out? by moving the dolly back and forth. Do you have any recommendations on different wheels to use? I use the red Modern wheels now.


I beleive I can help with this problem. My team and I have developed a wheel that does not flat spot and rolls extreamly smooth and quiet. The formulation can be made in a wide range of diameters and widths to fit any dolly system. Anyone wishing to learn more may e-mail me.

Edited by DollyWheelMan, 08 June 2006 - 06:43 PM.

  • 0

#17 David Erlichman

David Erlichman
  • Basic Members
  • PipPip
  • 49 posts
  • Grip
  • Toronto, Ontario, Canada

Posted 08 June 2006 - 11:37 PM

"I beleive I can help with this problem. My team and I have developed a wheel that does not flat spot and rolls extreamly smooth and quiet. The formulation can be made in a wide range of diameters and widths to fit any dolly system. Anyone wishing to learn more may e-mail me."


Please share!

Dave
  • 0

#18 Olex Kalynychenko

Olex Kalynychenko
  • Basic Members
  • PipPipPipPip
  • 868 posts
  • Cinematographer
  • Dnepropetrovsk, Ukraine

Posted 09 June 2006 - 02:59 AM

I have a skateboard dolly from Modern. It has 4 wheels per corner making a total of 16 wheels. I am getting bumping during the move. I think it is because of the wheels going flat while standing. They can be ?rolled out? by moving the dolly back and forth. Do you have any recommendations on different wheels to use? I use the red Modern wheels now.


I use handmade dolly and crane and can tell you a few my ideas.
I think, the sketboard wheels - toy.
I use 16 wheels, but, this is iron body, two ball bearing on one wheel, wheel have ruber outside.
The polyurethane outside must work good too, but, i not test.
Outside diameter of wheel 50 mm, the rail - aluminum pipe 40 mm
The track of wheel must be from metal - you will have good inertia and
The track must have high precision of position of wheels.
I set a rubber gasket from support car shock-absorber between track and chassis.
Any case, If the dolly have big weight, the move will more stability.
The good seller of wheels : "Blickle rader+Rollen Gmbh".
Thay have big set of wheels.


The next question - harshness of rail and interfacing of rails.
  • 0

#19 Ray Perry

Ray Perry

    New

  • Basic Members
  • Pip
  • 5 posts
  • Industry Rep
  • Rhode Island

Posted 09 June 2006 - 11:01 PM

"I beleive I can help with this problem. My team and I have developed a wheel that does not flat spot and rolls extreamly smooth and quiet. The formulation can be made in a wide range of diameters and widths to fit any dolly system. Anyone wishing to learn more may e-mail me."
Please share!

Dave

We had been told flat spotting, noise and rolling resistance were issues with the camera dollies, so we developed a formulation that resolves these issues. We hold several patterns in inline and skateboard wheels and were able to use this technology to develop the wheels. If you can give us the size and style of the wheels you use we can make some up for your application. Please contact Tony Roderick at 401-946-4400 for pricing.

These wheels will not flat spot and have high rebound which helps reduce the rolling resistance and noise. Please note these aren't Skateboard wheels they are made for camera dollies. I will add some photos this weekend.

Regards,

DollyWheelMan (Ray Perry)
  • 0

#20 sam kretschmer

sam kretschmer

    New

  • Basic Members
  • Pip
  • 1 posts
  • Grip

Posted 19 June 2006 - 05:39 PM

Dave,
Your product sounds interesting.My skatewheels are ready for an over-haul(32 wheel trays machined and welded everything myself)Biggest problem is that the wheels seem to have gradually gotten harder over the last 8 years or so,thus I'm in the market for new ones.Was gonna go Witch Doctors/hyper wheels but I know though pretty good,they are not a perfect solution in terms of flat spots and all the other issues that arise.Whats your pricing like and I'm curious where you are in R.I.
Sam K.(key grip nyc)
  • 0


Rig Wheels Passport

Tai Audio

CineLab

Wooden Camera

Paralinx LLC

Technodolly

Willys Widgets

rebotnix Technologies

Media Blackout - Custom Cables and AKS

Visual Products

Ritter Battery

Opal

The Slider

FJS International, LLC

Glidecam

Aerial Filmworks

Broadcast Solutions Inc

Gamma Ray Digital Inc

Metropolis Post

Abel Cine

CineTape

Aerial Filmworks

Glidecam

FJS International, LLC

Visual Products

Media Blackout - Custom Cables and AKS

CineTape

rebotnix Technologies

Tai Audio

Paralinx LLC

Willys Widgets

Abel Cine

Broadcast Solutions Inc

Technodolly

CineLab

Gamma Ray Digital Inc

Wooden Camera

Metropolis Post

The Slider

Opal

Ritter Battery

Rig Wheels Passport