Quote:
Originally Posted by klem
No, I mean BCO on the 100 octane.
On the 87 Octane it was there only as an EMERGENCY override, not a performance control.
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Oh I am aware of that, but I got confused by DnR's testing on the other forum as he stated the BCO works on the old 87 octane Rotol, too. You can pull the plug for something like 0.02 lbs. boost increase as far I know.
Quote:
Originally Posted by klem
Early indications are that pulling the tit makes no difference up to 5000 feet where it still does not at 3000 rpm but does at 2650rpm. But its early days and I want to make more tests.
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Oh yes it does work indeed, from sea level all the way up to some 12000ft. Gauge reading is only +8lbs (wrong on both 100 octane aircraft, but the other way around)
All you have to do is:
1. Pull the tit
2. Wiggle your throttle back and forth (otherwise nothing happens)
3. Voila - we have BCC-O activated, boost gauge now reads +8lbs (I assume that's just a bug as the performance feels like +12, also wrong on Spitfire)
glitch: you have to set the mixture to lean in order to use it at 3000rpm as intended, on rich there is 2600rpm max (engine will shake the Dickens out of you if you don't). Speed on S/L is greater and the manifold pressure decreases nicely as you aproach full throttle height.