Originally Posted by
fietsbob
Visually from that 4 bar type comparison picture the similar center clamp height of H &S are close, but the hinge on the H, allows clearance to the ground so M bar wont hit.. if you use the above S+ type set up on an H mast, it will benefit as well from that..
As already said numerous times whenever you posted this statement: This is no longer true. From 2017 on Brompton changed the M bars to be slightly lower and the masts of M and H to be slightly higher, thus now the H mast is considerably higher than the S, but still M and H stock models have the same height as before. Looking forward to the day when you recognize that and stop posting outdated information...
With an S mast and a riser bar of maximum possible height you end up with about the height of an M Brompton. Does not seem to make much sense for the OP.
Personally I am using the old H mast (2012-2017) in combination with the new M bars (2017-), delivering about the height of the P model (in between M and H) but with more reach. Not what the OP intends.