Analysis of information sources in references of the Wikipedia article "Wright R-2600 Twin Cyclone" in English language version.
The prototype R-2600-2, rated at 1,500hp for take-off ...
The XF6F-1 was powered by the Wright R-2600 14- cylinder Twin Cyclone radial engine. After meeting O'Hare, Grumman suggested a power increase which ... put the super new Pratt & Whitney R-2800 ... in the second prototype.
... for the RAF, 19 were experimentally fitted with R-2600-4-53 Cyclones ... engines of 1650 hp.