radiators have no influence on speed

[ACE-OF-ACES]

Originally Posted by David198502

you still don't know that its 50kph difference and not 11...man im getting tired arguing with you...

I think we are talking about two different things.. I am saying the difference in the two graphs is a constant ~11kph

Originally Posted by David198502

and even if it was only a difference of 11kph, why shouldn't one be able to detect it???

You can, but not with the naked eye! You would have to log the data, so you can take into account the variations of flight, because the fact of the mater is the speed vary as you fly due to you making small altitude changes.. That is to say YOU ARE NOT CAPABLE OF MAINTAIN A PERFECT ALTITUDE !!! But don't feel bad most cant! Thus the variations in speed due to altitude changes are on the order of 30-40kph. So, the 11kph falls within that range, thus you can not desern which is which unless you also plot altitude