Hi everyone ,
I write to share results of my research in case it can help help someone else.
For jack
-apparently there are some porsche car jack very low. didn t find one particularly low.
- if money is not an issue the best solution is probably the 1or 1.5 inch at minimal jack from calcarcover
https://www.calcarcover.com/product/low ... ND3fCEWzMf
- For air pumping device i have not found one that lifts more than 2.5 inch or so and it is a bit hard to hand pump them , i have a pair. Slow and i have to do 2 towers alternating . too long.
- for the moment i choose to go with the aluminium 1T 8cm low at minimal.30 dollars. it is too high for the quantum chair but if i put it under the rear caster horizontal frame i can lift it . place block under the chair . loose it and relift it from under the chair. With the ratchet style hand crank.
https://www.amazon.ca/Scissor-Accessori ... merReviews
I hope it will be usefull to some of you .
For jack the calcar seems to be the choice if you have the money. The other companies making similar have stopped selling their version. calcar seems the only one left.