Spit IIa: Good Throttle/Prop Settings for best performance (suggestions wanted)

[ATAG_Dutch]

Hello IceTbag, oh fellow Northwesterner!

Oil temp is normal at 90-95 degrees, max coolant 120, but it's best to keep at around 90 for oil, 100 for coolant. Lowering the boost (throttle setting) will lower your coolant temperature, lowering your RPM to 2650 will keep your oil temp nicely under control. If you set boost to +5 (the white mark in the red zone on the boost gauge) and RPM at 2650, with 50% radiator you should have no probs at all. This is in the Hurri Rotol, Spit Ia and IIa.

In the Spit I and Hurri DH, with 2-speed props, I tend to keep it in fine pitch with fully open rad up to about 6000ft, or when rpm reaches 3000, then throttle back to zero boost and coarsen pitch. Boost will rise to about +3, I then throttle back up to +5 boost and reduce radiator to half. In fact I normally don't go over +5 boost unless in combat.

No doubt others do it differently, but this works for me.

This is all using cockpit instruments. I've no idea what the digital stuff would say.

For the max performance stuff, it largely depends on altitude, as the relationship between pitch and boost alters the higher you go.