[Davew]

@ Davew:

Thank you for your post. You forgot the tea bag modification in connection with the 4 hispanos and the bomb at a Spit VIII. I never whould write the word disatvantage regarding to the 4 hispanos :-D.


Performance data belongs to which engine? The performance over alt 65 looks like HF and at sealevel very poor. The best thing is always a graphic or several achievement basic data. Otherwise you draw the performance line throught performance breaks down caused by compressor change.

Ooops, bad English, I hope you will understand :roll:

Yeah, sory about the performance data thing. I tried to put it into a table, but it didnt want to work. And I cant scan in the graphs that i have here.

But as for the data itself, I'm not 100% sure, but i believe it relates to the Merlin 63. I haven't found anything that compares performance from a 61 engined Spit to a 63 engined Spit. With 160hp less it should make a bit of a difference, but it would likely only be a couple of mph, say about 405mph for the Merlin 61 Spit?

But it is either the Merlin 61 or 63 - The 66 and 70 produced quite different results, the LF Spit was a good bit faster at low alt, while the HF had a top speed of around 415 mph at 30000' or so I think. Don't quote me on those though, they're just off the top of my head.

I've got about 20 books here on the thing, it's probably just a matter of finding the info. I'll keep looking.

(Removing the comparison)
F.Mk IX
Merlin 61 or 63
1560 hp(61)
1690 hp(63)

Length
31