I'm looking for some information on HEP (Head End Power)
When the 201's worked the Dublin-Belfast-Dublin Enterprise before they had the generator vans and used there HEP to supply power to the coaches, I'm trying to find out if the engine was revving at FULL rev's all the time or was it half rev's etc.?
Did the engine, when accelerating ever increase or decrease when decelerating?
I know they sat in Connolly revving away but just need to know any info on the above.
Any help is appreciated.