spinningmagnets wrote:I now believe that the ENO "Dos" will allow a chain on one sprocket or the other, but not two chains at one time.
I have an idea. Not thought out but just an "inspirational flash".
So it might be worthless. But... take the other ENO that SBP has, with the 5-hole ring. Attach your desired jackshaft sprockets to adapter rings that will bolt to that ring, with the adapter rings on opposite sides of that ring, facing each other. Now there is clearance for even wide chains if you need it. Possibly the space you have available is too small to put all this in there, though.
DAMN, air-shocks are expensive!!
Yes, they are. The AirRide industrial types (firestone/bridgestone 4001) that were used for the Autospeed trikes ran around $150 each last time I tried to price them. That's one reason I never built the first trike I started designing, because it requires those to work, being based heavily on the Autospeed trikes.
If you have space for it, though, you can make your own airshocks of a sort.
Take a small diameter but wide tire, like some of the ones for dollys. Turn it inside out. Build a pair of (aluminum) clamping plates for each end, machined to be secured around the bead of the tire for an air seal. Use adhesives or sealants wherever necessary. Drill mounting holes in the end plates or bolt mounting hardware to them as needed. Drill a hole in an accessible spot on one end plate for an air valve. Install, and inflate to desired pressure.
I have four old gokart tires I found in a small pile of trash in a Walmart parking lot, which I would like to someday test this theory with. I also have two small powerchair tires about the same 10" diameter but only 3" wide that would probably work as well for lesser displacement, after I pull them off the "airless" tubes inside them.