Huricane Mk I 100 Octane perormance tests 1.07.18301

[klem]

Originally Posted by Robo.

Good stuff klem! I assume you meam BCO on original 87 octane Rotol Hurricane. Looking forward for the tests mate.

No, I mean BCO on the 100 octane.

On the 87 Octane it was there only as an EMERGENCY override, not a performance control. I don't think it does anything on the CoD MkI 87 octane but when I get around to testing that I'll see. There is a 'Boost' parameter that I pick up in the scripting and although the 'Manifold Pressure' parameter only appears to be a reflection of the gauge reading, the 'Boost' parameter goes higher. 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.

[Robo.]

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.

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.

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.

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.

[TomcatViP]

You guys are incorrigible. Hurri MkII in Aug 1940 ?!

Of course... and 1943 for the Meteor ... or 1945 for the AIM9?

Just like saying that the F22 was in service in 1995 as the ATF was tested by USAAF.

[Robo.]

Klem just did a series of quick tests - everything works as described, you don't need to do the throttle thing to disengage BCC-O.

Originally Posted by TomcatViP

You guys are incorrigible. Hurri MkII in Aug 1940 ?!

What are you talking about?

[TomcatViP]

Look at post #111

Delivered does not mean in Operation. Try to keep that in mind.

[Robo.]

Originally Posted by TomcatViP

Look at post #111

Delivered does not mean in Operation. Try to keep that in mind.

I don't think he said anything about having Hurricanes Mk.IIs in operation in August 1940. All he said was an interesting and true fact about transition to Merlin XX powered Hurricanes in the RAF.

If they will model this variant in CloD (which I hope they will eventually), it would be used for late 1940 scenarios and mainly the 1941 era.

Anything else you'd like to add to Merlin III 100 octane testing? Do you also find the mixture glitch weird?

[klem]

Originally Posted by Robo.

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.



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.

Fek Me!

Probably explains the attached. Don't bother speculating.
Back to the cockpit.......

[Robo.]

Yeah mate I was trying to join you on the No.56 test server but there was a password