On Sunday, November 22, 2020 at 6:08:23 PM UTC-5, 2G wrote:
On Sunday, November 22, 2020 at 9:01:16 AM UTC-8, Richard Pfiffner wrote:
I built one of Jay's jacks many years ago with his parts list, pictures and prints.

It works great and is very robust.

Richard
www.craggyaero.com
If you need more clearance in the lowered position a double-acting bottle jack is the answer:
https://www.northerntool.com/shop/to...E&gclsrc=aw.ds

Tom

Just to keep the nomenclature straight: the link shows a two-stage telescopic cylinder and it is still only single acting, i.e. one can power it up but either a spring inside or the load will have to bring it back down. This is NOT a double acting cylinder which could be extended and retracted hydraulically.
This one will most likely only lift the designated 2t on the first stage, which is still way more than needed in this application here.

Uli
'AS'