Quote:
Originally Posted by Mike Bradbury
One thing I have wondered about dump trucks and their mechanisms is the geometry of them. Some are scissor like your version and some are just a straight push with no scissor action. Is the scissor for better ratio? Or is it to compress the space needed for the hydraulics? The non scissor type seem to need longer rams and a bigger reservoir. For instance your roll back seems to be a straight push and Dolly has a scissor.
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Good question…I never thought about it during the purchase of either this dump box or the rollback…I purchased them because “they were available”. For the rollback, it makes sense to me for the straight push because of the coupled motion that can happen with the elevation pistons and the lengthening piston. The scissor sure is balanced on Dolly and it elevates to near 80 degrees! My white C50 dumptruck is a multilevel straight piston to get its height.
Thanks for looking in on the project!