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@Smallfurry
So using the Nibberittet, Dammit, TW2, and myself will be enjoying soon, as an example.
0 - 1.5km elevation gain over 21km distance.
Real world.
7% incline,at 230watts , for 92Kgs of bike + rider, over 21kms = 11.5 kph over 110 mins
11.5 kph, in 34:26 = 70rpm
Turbo trainer.
225watts = 27kph.
27kph at 70rpm = 50:16
So basically I need to push 50:16, at 70rpm, to reproduce climbing the mountian in a time of 110mins, on the fluid 2.