Who makes the machine with rubber rolling balls in the rear

So I could have sworn I saw a machine similar to the style of the workhorse one but on the back and there was like a rubber round cylinder that was next to a similar next to an elliptical cylinder the elliptical causing the back and fourth motion. Im curious to designs like this because it seems at least in my head as if this could change the stoke profile and could enable a person to create machine that is not quite 50 50 duty. It also seems like the rubber cylinders could act as a dampening mechanism. Did I see this or should i build it?

sounds like you should make one! sounds like a cool idea!

You are looking for a machine that has a dwell in the stroke.

Whats a dwell I thought it was a special technique but looked through all there stuff and couldn't find it maybe I dreamed it

the index rotarys are maybe what you seen

thats them thanks

ahh i have some for sale!

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Originally Posted by hendricksonart.com

Whats a dwell I thought it was a special technique but looked through all there stuff and couldn't find it maybe I dreamed it

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Dwell or delay on the up or the down. A not 50/50 stroke more a 60/40, more time spent up than down or the reverse to mimic a not 50% duty cycle.

Slicksteel, can ya post pics of ones you have for sale??
Russ

sold them awhile back russ