Raising a Concept 2 Model B ergometer

I made a set of platform legs for it that raised it 13" off the ground, because getting down and back up from it so low to the ground was unhappy-making.  Initially I made this:

But I hadn't allowed for the surge of my inertial momentum...this lashup parallelogrammed.  I had to do this and then that to keep it square as weaknesses of what I'd done surfaced.
I ended up with this ridiculous kludge upon kludge:


If I was to do it all over again, it would be much simpler:

I also got (see picture above right)

I hold onto the tee when getting on and off the erg.