Time for a better a8?

[Kweassa]

From what I understand MW50 acted like an antifreeze for the lines or some such something mumblemumble.

 MW50 is an anti-detonant. It's a 50:50 mixture of methanol and water, hence the term, 'MW-50'.

 Upon its injection, it would allow the engine to run at higher boost pressures for a prolonged time without risking damage or failure. The water was the main medium of dispersing heat, and the methanol was just mixed in to keep the liquid from freezing up at high alts - thus, the methanol is the 'anti-freeze' in this case.

 Since it did not increase the boost pressure by itself, it wasn't as efficient to use MW-50 at very high altitudes where the boost pressure of the engine dropped sharply. At such alts, the use of GM-1 would be preferred, which was a nitrous-oxide that increased the boost pressure itself by providing more powerful combustion.

 The P-47's 'Water-Injection', and the F4U 'ADI(Anti Detonant Injection.. I believe..)' was essentially the same thing as the MW50.


 However, I have no idea why MW-50 can be run at nearly 10 minutes straight, but the P-47 or F4U injection is limited to 5 mins. Perhaps Germans were more desparate and just decided to sacrifice engine life expectancy.

[Krusty]

Originally posted by leitwolf
AH's 190A-8 and D-9 have two of them.  I'd rather have the option to get rid of them, they're dead weight most of the time

You're not confusing the 131 with the 151/15?

I'm not confusing them. Totally different guns.

What I'm saying is I'd *like* the MG131s to fire like small-power cannon, instead of solid slugs (which they seem to do now)

Does D9 have them? I thought it has 13mm MG17s (not to be confused with MG131s)

MG151 is almost useless.. the current 20mm is weak enough. Imagine getting a weaker version!


Also I heard that some versions of 190As had cowling guns replaced with cannon.. what version was this and what guns?

[Kweassa]

Krusty, the MG131 IS a 'solid slug' gun. They are heavy machine guns that fire 13mm(50calibre = 12.7mm) armour piercing shells. It doesn't fire like a small cannon because it is not a small cannon.

 Generally, all Luftwaffe fighters after mid '43 were armed with MG131 13mm HMGs and MG151/20 20mm cannons. MG17 is equipped on the Bf109G-2/Fw190A-6, and its previous variants.

 The 190s with all-cannon armament would be the D-13 and the Ta152H.

[MANDO]

Krusty is not confusing them at all, MG131 ammo was HE, HEI, AP and API.

More info here:

MG131.13

[Crumpp]

The FW-190A8 and FW-190A5 have the same engine in name but not inpower output.  The FW-190A8 BMW801D2 1st gear FTH power output was around 2050hp compared to the FW-190A5's output of around 1750hp.

MW-50 was cleared for installation and use in the BMW 801 series motors in Jan 45.  Biggest concern was the lack of "charge coolant low" warning light so the pilot had to watch his time carefully.

It was cleared for use as long as charge coolant was available.  The order warns the pilots not to run out at high boost but reduce throttle and shut down the MW 50 delivery system before it is empty.  The actual time depends on the size of the MW-50 tank installed.


All the best,

Crumpp