I think a better solution would be to use a trailer screw jack.
This one has 15" of travel, and the 13" of drop leg adjustment means you can adjust it a bit to fit most bike seatpost locations before clamping them on.
Something like this. Bolt the foot to the floor or to a large stable steel base plate. Attach the bike seatpost clamp head with big square U-bolts or whatever.
If you search around a bit (“direct weld on trailer jack” is a good term) you can find them with the winding handle from the top, and some with a bare axle meant for use with a detachable handle. Depending on what you get, I’d suggest working out an adapter socket so you can use a battery drill to wind them up and down.
I still think having the weight of a big cargo bike cantilevered off center over the lift is going to topple that configuration over. It’d be much better to use some pulleys or something bolted to the ground atmo.
make a larger plate for the park clamp and put plywood strips on each side of the strut channel so you are clamping to the plywood instead of the channel
I think about this fender set about twice a week when I look at the sloppy fender job on my clydesdale. Still not sure I’ll buy the new set though. My current setup looks crappy enough to not get stolen. I don’t think NYC bike theives have figured out how expensive dyno light set ups are.
The problem I see with the moto lift is that I want the wheels able to spin freely. At least the rear wheel. As it is, I lift the back end of the Bullitt off the floor with my pulleys and then secure it in the workstand with the front wheel on the ground.
This specifically says it’s not intended for long cargo bikes like yours, but I wonder how well it would work anyway. Would that be because the weight hanging further out to the sides could put undue stress on the lift mechanism?
With the bakfiets, my dangly pulley system works ok. I’m more thinking about the Madsen which is heavier by a fair bit and way more unwieldy. It’s back heavy, so it’s way harder to get the drivetrain up enough to work on it.
The moto lift under the boom tube would be great, but the Bafang motor hangs under the biscuit shell and is in the way.
There are also some cables and sensors and wires under there.
I just lean the Spicy Curry at a 45° angle onto something softish, then sit on a low stool while working on the undercarriage. Works okay, but wouldn’t be great for someone with a dodgy back.
With a park stand bolted to it at working height. You’d have to attach the whole thing to a wall or make it bolt floor to ceiling. But it seems like it wouldn’t be too difficult.