myredracer wrote:
I can't see how the Fastway chocks would be superior to X-chocks (providing they're tightened) to prevent motion inside. Doesn't make sense from an engineering perspective.
I never said its SUPERIOR, I simply said that they both seem to reduce interior motion about the same. I simply chose the ONEstep because I prefer that technology and I'd prefer to not have to retighten after the tires cool. I'm not bashing X-Chocks by any means. It seems like a great product.
The X-Chock uses opposing force against the tires to prevent them from rolling fore and aft.
The ONEstep uses opposing force against the tires to prevent them from rolling fore and aft.
The only difference is that the X-Chock is mounted between the tires and off the ground, whereas the ONEstep is mounted between the tires and on the ground. The front tire can't roll back, because it would roll UPHILL against the chock. The front tire can't roll forward, because it would roll UPHILL against the chock. These aren't just rubber chocks you drop loosely behind the tire... they are tightened against the tires, preventing them from rolling even a slight amount.
I'm not an engineer, heck... I've never even been on a real train before... but its obvious how they work and its obvious that they DO work.