Speed graphs for Spitfire and Hurricane

[camber]

Well, my beta patch gives me CTDs within 5 mins of taking off in ATAG MP. 50% of people chatting seem to be in the same boat, whereas the other 50% are totally CTD cured for hours on end. Go figure

So what else to do but go single player, turn off the cockpit and get SL speeds for the patch?

Technique: skim waves, centre ball, settle as close as possible to 0fpm. As noted above the tool tip in cockpit view does not agree with the cockpit guage (possibly it rounds down to nearest 10mph?), all these speeds are based on the guage in no cockpit view.

My SL speeds and observations:

Spit II
275-280mph 3000rpm full throttle (~6.25psi boost)
290-295mph 3000rpm full throttle red tab (~9psi boost)

rpm boost quirk (drop in rpm increases boost) is gone, boost stays constant with rpm. Dropping rpm to 2600rpm does not lead to speed increase any more

Spit Ia

255-260 mph 3000rpm full throttle (~6.25psi boost)

As per Spit II, rpm boost quirk is gone (boost constant with rpm), and dropping rpm now does not increase speed. Boost cut out still does nothing.

Rotol Hurri

240-245mph 3000rpm full throttle (~5.25psi boost)

Boost quirk is still there for the Hurri, i.e boost increases to approx correct value (+6.25 psi) only if rpm dropped to 2600rpm. However unlike before, this does not increase speed.

109E4
with prop auto at 2300rpm only
450-460kmh (280-286mph) at 1.35ata
460-470kmh (286-292mph) at 1.45ata


On the bright side, E4/Spit II matchup may be rather "balanced" with max SL speeds almost identical. Both Spit Ia and Rotol Hurri are now "I like a challenge" only planes

camber

[klem]

Originally Posted by camber

Well, my beta patch gives me CTDs within 5 mins of taking off in ATAG MP. 50% of people chatting seem to be in the same boat, whereas the other 50% are totally CTD cured for hours on end. Go figure

So what else to do but go single player, turn off the cockpit and get SL speeds for the patch?

Technique: skim waves, centre ball, settle as close as possible to 0fpm. As noted above the tool tip in cockpit view does not agree with the cockpit guage (possibly it rounds down to nearest 10mph?), all these speeds are based on the guage in no cockpit view.

My SL speeds and observations:

Spit II
275-280mph 3000rpm full throttle (~6.25psi boost)
290-295mph 3000rpm full throttle red tab (~9psi boost)

rpm boost quirk (drop in rpm increases boost) is gone, boost stays constant with rpm. Dropping rpm to 2600rpm does not lead to speed increase any more

Spit Ia

255-260 mph 3000rpm full throttle (~6.25psi boost)

As per Spit II, rpm boost quirk is gone (boost constant with rpm), and dropping rpm now does not increase speed. Boost cut out still does nothing.

Rotol Hurri

240-245mph 3000rpm full throttle (~5.25psi boost)

Boost quirk is still there for the Hurri, i.e boost increases to approx correct value (+6.25 psi) only if rpm dropped to 2600rpm. However unlike before, this does not increase speed.

109E4
with prop auto at 2300rpm only
450-460kmh (280-286mph) at 1.35ata
460-470kmh (286-292mph) at 1.45ata


On the bright side, E4/Spit II matchup may be rather "balanced" with max SL speeds almost identical. Both Spit Ia and Rotol Hurri are now "I like a challenge" only planes

camber

I think you're right about the tooltip and I removed that from my post but we can't get those speeds on line

[ATAG_Snapper]

Originally Posted by klem

I think you're right about the tooltip and I removed that from my post but we can't get those speeds on line

Hmmm, is it possible that there is a difference between offline and online performance of aircraft in Cliffs of Dover? I was unable to achieve (online) the values that Camber did offline.

EDIT: Just did some testing of the Spitfire Ia and IIa offline and online (ATAG Server). Looks like there may be a different curve for the Spitfire IIa between online and offline flying. This might explain the difference between what Camber recorded and what is happening online. Please ignore the A2A data -- apples to oranges to Cliffs of Dover.

http://theairtacticalassaultgroup.co...2238#post12238

[41Sqn_Banks]

I was read the cockpit gauge. But there could be simple texture mapping errors. I think we should standardize on use of no-cockpit-view gauges for test flights.