Lean Mixture

[Skoshi Tiger]

It seams to work well in the Spitfire IIa, following the manual settings for maximum range.

Air Speed 160 mph IAS, Mixture weak.

I found I was setting the govenor to about 2400RPM and then using the throtle to maintain about 2200- 2300rpm. I was trying to keep my manifold pressure as low as possible.

When I tried in a MK1a I found that my rpm was bouncing around a lot under 2400rpm and I found it difficult to maintain airspeed.

Cheers

[whoarmongar]

You mean your mix actually works in the spit ? I fly the spit 1a and on start it will fire up on either lean or rich, but runs better ie revs pick up on lean !
When actually flying I use lean at all times as it will never run right on rich.
By lean i mean lever forward,
I just thought it was a bug.

[Skoshi Tiger]

Originally Posted by whoarmongar

You mean your mix actually works in the spit ? I fly the spit 1a and on start it will fire up on either lean or rich, but runs better ie revs pick up on lean !
When actually flying I use lean at all times as it will never run right on rich.
By lean i mean lever forward,
I just thought it was a bug.

When flying the Spitfire IIa under the conditions stated above it seams to work ok for me. Running the MkIa under similar conditions has issues.




One thing I just noticed testing (just now) is the interlocking device doesn't seam to work in the IIA? I'm sure it did before.

Cheers!