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Re-working the wheels on my Cart


Jeff Wexler

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I changed the wheels on my cart before the last movie but discovered while working that the wheels I had used (12" motorized wheelchair flat-free tires) were not a good choice. So, after wrapping the job, I completely re-designed the wheel and axle assembly, going back to the inboard style arrangement I had done on several of my older carts. Going the inboard route it is true that some stability may be compromised (though I have never really found that to be a problem) but the benefits are many. The overall width of the cart is just the frame of the cart, not the wheels, keeping it so that the cart fits nicely even in very narrow doors. Also, I can use pretty standard handtruck-style wheels (in this case, 10" flat-free tires). The great advantage of my original design, two piece cart, is that I could work on just the lower frame without worrying about the main part of the cart. Once put back together I will probably not separate the two section again (unless I have to make some sort of modification).

 

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Inboard wheels are brilliant. Flat surfaces for strapping into trucks and stakebeds.

My carts have always had wheels flush with a flat surface for this exact reason.

I prefer foam filled pneumatic tires over the solid tires. The solid ones get flat spots when the sit for a few weeks, which sadly happens more often than we like.

Robert

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Inboard wheels are brilliant. Flat surfaces for strapping into trucks and stakebeds.

My carts have always had wheels flush with a flat surface for this exact reason.

I prefer foam filled pneumatic tires over the solid tires. The solid ones get flat spots when the sit for a few weeks, which sadly happens more often than we like.

Robert

FLAT SPOTS! You bet. The follow cart (with solid flat-free 10" tires) could barely be rolled out of the ship container it sat in for 2 weeks. Bummer. I don't know what to do about them, Someone suggested a heat gun (hari dryer) to try and bring them back to their original round shape. Now you've got me worried about the flat-free (solid) tires I have just installed. Do you have a link, perhaps, for foam filled ones?

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It's true.  I bought flat free tires as replacements for the 8" swivel and lock pneumatics that were originally on my cart.  Each time I let it sit for even a couple of days I get flat spots.  I just came back from 3 weeks off and wow!  They are substantially harder as well and I notice a lot more vibration in the cart while moving.  I'm considering going back.  

 

PWP

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I found the goo-filled wheels (like JW's) much heavier than the pneumatics--substantially so, and gave up on them.

 

The only thing I'd say about the inboard wheel in this config is that stuff picked up by the wheels (mud, water etc) as you roll around an ext location micht get deposited on your PSU etc.  Maybe a fender or guard in there?

 

philp

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Nice work there Jeff.

I have also looked at the no flat option, for the 4 x 10" wheels on my 2g cart. However one day at my suppliers I saw some & picked one up.

I calculated 4 would weigh almost as much as the cart. I do use some 8" ones on the front & they are flat free & don't weigh much - come from somewhere in China.

However the 10" ones I use are Fallshaw (Australian made), they are sold in USA..  www.fallshaw.com.au/contact 

They are not split rims, nicely powder coated. They can come with inner tubes, although lately I have been getting them in tubeless. Problem with that is if you let them down they take a big air compressor to get them inflated again. I am thinking of re-visiting tubes again also.

The product code I buy is T350x4DMD-SB20 = T350x4str/SB20

T350 is wheel,  4DMD/4str is tyre (diamond pattern, quite wide),  SB20 is 20mm axle...

Product page is www.fallshaw.com.au/wheels/pneumatic/steel 

Maybe worth a thought.

Rob

 

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