ORIGINAL: Denniss
Just for Info:
The K-4 with 4-bladed Dünnblattpropeller (thin blade prop) reached 728 km/h, the standard K-4 with 3-bladed prop the given 715 km/h.
British war test reports should always taken with a grain of salt, they often used crash-landed and repaired aircraft for their test or used this test data and interpolating it to a newer version (the famous Bf 109 F-2 with dodgy engine interpolated to F-4 with stronger engine (they knew of) and prop with wider blades (they didn't knew of)).
What I don't like with the R6 babies is the very high loss in MVR, probably 1 (maybe two) point too much, but a really low loss of climb rate. AFAIK these two MG 151/20 with installation and ammo weighted about 150 to 200 kg each and this should affect climbrate somewhat higher.
Here's a late-war british test report of a G-6/U2 with R6 package (as noted as two 20 m guns in underwing gondolas, clearly visible in the pics). Especially interesting are the range tables showing the Spits as really short-legged, even with a 90 imp gallon drop tank not reaching the G-6 with 66 imp gallon drop tank
http://www.wwiiaircraftperformance.org/ ... tical.html
well, again, since I am not using the so called max climb rate for the clean model, I do not think the dirty model is that much slower in the climb (but to be honest, really good info that you can use on the 109 is HARD to find, 386 MPH for every model is standard)
I disagree with the MRV loss too, but that was Gray G's design (in fact, his drop was 7, I made it 5 and then made it stardard thoughout all models)
hmmm, I think there is something very wrong with that stat sheet, they giving the 109 a 1 hour and 20 minutes extra range with a 66 gallon tank ?
most combat reports from the pilots state the 109 and 190 pretty much had a hour of fuel
I think who ever was writting that report was smoking something before it's time