Greg Boston
November 19th, 2006, 06:58 AM
Let me try it again, with the wheels closer together. As I said, I don't remember it squeaking 'til I moved 'em further apart with the extra washer on each wheel, but maybe that's just wishful thinking.
That should help alleviate the issue I mentioned earlier... the fact that you have too much side wheel in contact with the dolly track. Putting the wheels closer together should help eliminate that problem.
Looking forward to some good dolly shots from you!
-gb-
Mike Teutsch
November 19th, 2006, 08:13 AM
This design will work for very light weight setups, but is inherently flawed. As pressure is applied the wheels are forced apart. If all is very tight they may not physically spread, but the rubber will be compressed, indented, and will make a larger footprint. It will scrub on the tube.
Think of it this way: Your driving you car down the road on a flat surface, the tire makes contact with the road on its face and makes no marks and little if any noise. Now run your car over to the slanted curb and start touching it. The tire will still roll, but it now is scrubbing off material on the curb, "BLACK MARKS," which will make a noise.
All of the above will happen in the dolly wheel setup that you have, but just to a much less noticeable degree. But, it will happen! The further the wheels are apart, the more this effect will occur.
For the dollies I built, remember I gave one to Bill Gardner as a DV5 prize, I used angled aluminum to mount the wheels so that they contact the rail on the normal flat surface of the wheel. With this setup there is no sidewall scrubbing. They can ride on tubing or even on angled rails, with no scrubbing.
Perhaps in a week or so, very busy right now, I could post pictures and drawings for all of you. This design is ultra simple and will support far more weight than what you are using. I could sit on mine and use it, and I weight 230 lbs. Ya, I need to loose a few pounds, well maybe a little more.
I will post it as soon as possible. May also be selling some soon, I hope, as I bought materials to build about a hundred of them. 480 wheels for example! But I will post plans for all anyway.
Good Luck----Mike
Josh Bass
November 19th, 2006, 04:22 PM
Yeah, you might be right. However, it might be that I just have squeaky rubber tires.
As I said, I took the middle pairs of tires off, and I was playing around with them, running them along the pvc pipe, while detached from the dolly (each pair of wheels still held together by the axel and nuts), and they're STILL squeaking! Even with nothing but the pressure of my hand on them, they still squeak! I think I got the wrong tires. And the wrong design. So, when I feel like spending another $130, I'll get the slotted angle iron and some skateboard wheels. HARD ones. Soft wheels seem to suck.
The dolly does run fine on boards and stuff, so it ain't totally useless crap.
Charles Papert
November 19th, 2006, 06:06 PM
Hey Josh, how did that documentary on the artist and his family turn out?
Josh Bass
November 19th, 2006, 10:05 PM
I shall email you privately about that. It's not fit for public discussion.