from the Fig. I guess... : ]2 r0 X0 O+ v3 B+ A! U4 t1 L g$ k e' H3 Ovariable displacement and fixed displacement pumps 7 d2 m, w0 M. @% d1 W& X8 f3 \7 h/ e1 W$ G" `( M
you can change the swash of one pump to vary the displacement and then change the flow# u4 a6 q! k# e6 e
. U. Q8 T2 L) I9 r, G; i. [' a- _actually the first Fig tells you the relationship of Load pressure and flow . * l; s7 U4 }3 n: R u9 K1 M, {
based on it . you can determine the horsepower loss and suitable operating pressure.9 h& ?. A H. N# \+ }% S$ c
4 J \: U+ l" c$ W
I guess all above.. not 100% sure