Speed graphs for Spitfire and Hurricane

[pstyle]

Originally Posted by David Hayward

So, B6's numbers are good, assuming the lower octane. Obviously they should add a 100 octane version.

yeah, I think B6's numbers are pretty close at least from 3000m up.

Like I said; it would be nice to see the figures for sea-level too.

And you're right, some modelling of the 100 octane would be ideal, especially given it's almost ubiquitous use from April/ May 1940 onwards in the RAF.