Originally Posted by Mycroft
The real problem with the Peregrine was the development of the Merlin, which rapidly took over all the facilities at Derby and other RR plants, and as the Whirlwind was the only Peregrine-engined production a/c it was decided to cease production in 1942 after production of 301. With a the exception of a couple of development prototypes all Vulture production (538 in all) was used for the Manchester. The Vulture at 1,800 hp was comparable to the slightly later Griffin II but was much bulkier and had teething problems with the coolant system (it was treated as two seperate systems for the the cylinder blocks, but as the sytems were interconnected there could be cavitation problems).
Am I correct in thinking that the Vulture was two Peregrine engines mounted bottom to bottom hence the two separate cooling systems?