Author Topic: Spit Mk1A climbrate (Read 3486 times)

Keiler · « **on:** August 03, 2005, 04:25:49 AM »

How come the AH2 SpitMk1A has such a high climbrate? The maximum values I find on the net (google) are 2500fpm, and most float around at 2100-2200fpm...

Any explenation to that? Engine variations?

Thanks!

ramzey · « **Reply #1 on:** August 03, 2005, 06:47:44 AM »

http://www.spitfireperformance.com/spit1.html
http://www.spitfireperformance.com/n3171.html

Kev367th · « **Reply #2 on:** August 03, 2005, 12:25:46 PM »

Going to be even better when the re-model changes its boost from the current 6lbs to the more common 12lbs.
Incidently this use of the 100 grade fuel also adds around 30mph to top speed.
Should make BoB scenarios more 'interesting'.

Keiler · « **Reply #3 on:** August 03, 2005, 12:30:15 PM »

Thanks ramzey!

[edit]
Kev, was this 12lbs boost common?
Guess those accounts by british RAF pilots the "Emil climbed like it took an elevator, while we took the stairs" was from 6lbs plus fixed prop or 2 staged...

1K3 · « **Reply #4 on:** August 03, 2005, 12:40:14 PM »

100 octane was common during the battle

btw, where do Brits get their 100 octane fuel anyway?

Furball · « **Reply #5 on:** August 03, 2005, 01:34:44 PM »

Quote

Originally posted by Keiler
Thanks ramzey!

[edit]
Kev, was this 12lbs boost common?
Guess those accounts by british RAF pilots the "Emil climbed like it took an elevator, while we took the stairs" was from 6lbs plus fixed prop or 2 staged...

that quote is obviously bs as british do not call it an 'elevator'

Keiler · « **Reply #6 on:** August 03, 2005, 01:56:24 PM »

I quoted it on top of my head, as I read the passus in a german article, where they had interviewed british and german pilots of BoB.

Kev367th · « **Reply #7 on:** August 03, 2005, 02:59:17 PM »

Yup 100 grade fuel was very common.
After Dunkirk and the Battle of France Spit I's were converted starting in March 1940, the huge stockpile they had was released to the squadrons in May.

Will make a big difference to the next BoB scenario-

With 100 grade fuel - Spit I max speed up by over 30mph, plus it will have 12lbs boost instead of our current 6lbs.

Keiler · « **Reply #8 on:** August 03, 2005, 04:52:04 PM »

rgr thanks Kev

FalconSix · « **Reply #9 on:** August 03, 2005, 09:05:28 PM »

Will the spit1 be faster than the 109 and 110?

Kev367th · « **Reply #10 on:** August 03, 2005, 10:10:31 PM »

Certain alts it will be faster than the 109. They were pretty evenly matched, 109 faster at certain alts, Spit at certain alts.
In fact that evenly matched its probably one of the few battles in history where the men involved rather than the machine decided the outcome.

The 110 commonly used in the BoB I believe will still be faster. Unless we get the earlier BoB version before the next scenario.

FalconSix · « **Reply #11 on:** August 03, 2005, 10:19:17 PM »

The AH spit1 is already faster than the 109. If the spit1 gains 30 mph it will be faster than all other early war planes including the 110. If that's the case then it is complete BS.

FalconSix · « **Reply #12 on:** August 03, 2005, 10:23:53 PM »

lol give the spit1 30mph more and it's faster than the spit5 and 109F. I think you're full of it.

Kev367th · « **Reply #13 on:** August 03, 2005, 10:35:28 PM »

Read this
http://www.mikekemble.com/ww2/spitfire.html

Depending on where you find the figures it was an approx speed increase of 25-34mph depending on alt using 100 grade fuel. I just used an average figure.

And this
http://www.spitfiresociety.demon.co.uk/spitdev.htm

And this
http://www.deltaweb.co.uk/spitfire/survival.htm

Above 20,000ft the 109 was marginally faster.

Finally official RAF site http://www.raf.mod.uk/bob1940/index.html

Take a Spit 1 up and try chasing the 110-G2 which is used in the BoB scenario, try to follow it ina dive also.

Now whos full of it?

FalconSix · « **Reply #14 on:** August 03, 2005, 10:39:42 PM »

You are. 30 mph more than what? the AH spit1 already does more than 360 mph while the 109 can't even reach 350. Above 15k the spit is completely dominant.