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Comment by cydonian_monk | Hacker News Reader

The multiple smaller wheels give an extra leverage point, whereas a single, larger wheel can require quite a bit of force. If climbing multiple stairs that can wear both you and the dolly out.

I'm not sure I would have preferred this back when I was still moving furniture for a living, as a furniture dolly with belts along the back/spine will slide up a flight of stairs without much trouble.

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I used to move furniture and I much preferred the type of straps that would wrap around your wrists, under the appliance, to the other lifter's wrists over the furniture dollies.

Sounds like a good way to lacerate your wrist, or maybe lose your hand.

We tended to always be labor-short for deliveries, so if we could send a job out with one person we would. A single person can safely deliver most household appliances with just a furniture dolly (up to a side-by-side fridge, which almost always needed two people due to its mass and a set of tools to remove the doors).

If you're talking about wear then my gut feeling says that a larger wheel would be far more robust than three smaller wheels (with additional axis for the combination). Especially when you're using this on streets with uneven pavement I think a larger wheel would be better.

The larger wheel will be made of slightly too thin plastic and held on with a split-pin - how else will you resell it in 2 years - so robustness probably isn't a positive factor from the sellers perspective.

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