Why don´t these figures match up?

[NaBkin]

Originally Posted by MusseMus

Yes thats right but I don't have the time and skill to calculate them My point was that it seems like there is quite a big difference between the speed gauge in the spit and 109. Countless posts on this forum complain about the spit is going too slow in level flight and most of them draw this conclution from the speed gauge alone. I'm not saying they are wrong, but reading the speed gauges gives the impression that a 109 is travelling much faster than a spit, even if they are flying side by side.

You're right. This isn't a IAS/TAS issue (if TAS or IAS — neither give the expected values in the calculation and it's only a few % difference in this low altitude on a regular day anyway).

Also it's not an FM issue because even with a completely wrong FM (say if you do the calculation with the "FM" of a juggernaut, you should get the expected values).

So I'm getting the feeling that the speed gauges in CloD are a mess. It seems that they show an incorrect (too slow) speed.
15% too slow for the Spit and 5% too slow for the 109.

If you think further and considering the numbers MusseMus brought up a few posts earlier, the FM of the Spitfire actualy could be 15% faster than the gauge indicates and the Me109 would be arround 5% faster.
Maybe it's "just" an issue of incorrect display of gauges rather than incorrect FM Should be very easy to fix I suppose...