[AT] David Brown Hydraulics was Ford Motives

[James Peck]

This man discusses some of the development work on David Brown hydraulics.

https://www.dbtractors.co.uk/hydraulics/

[James Peck] How did the David Brown VAK do it?

You mention that the PTO shaft exits the casting with no hydraulic fluid on the inside side.

Thomas Martin AT List Member (tmartin at xtra.co.nz); However the Ferguson had a double sided piston pump arranged around an eccentric mounted on the PTO shaft. Throttling the intake just reduced the output. The pump output, (3.3gpm(imp), was one of the weaknesses of Ferguson, when fitting external hydraulic equipment, especially when compared with DB with 5+ GPM.