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View Full Version : Differences in p51 b c d ?



goatkisser
05-13-2004, 12:43 PM
Which P-51 is best at:

Rollrate ___

Speed ____

E-bleed ____

Dive Speed ____

I know about the canopy, guns and sight are there any other differences?

goatkisser
05-13-2004, 12:43 PM
Which P-51 is best at:

Rollrate ___

Speed ____

E-bleed ____

Dive Speed ____

I know about the canopy, guns and sight are there any other differences?

Korolov
05-13-2004, 01:19 PM
P-51B & C are a bit faster in top speed, rollrate is pretty much the same for all models. E bleed is higher on the D. Dive speed is faster on the D, although VNE is the same for all models.

http://www.mechmodels.com/images/newsig1.jpg

goatkisser
05-13-2004, 01:55 PM
Thnk you! http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

Maple_Tiger
05-13-2004, 02:12 PM
Rollrat:

There all about the same.


Speed:

Depends at what altitude.

The P-51B used the V-1650-3 Merlin. This type of engine was a little better at higher altitudes then the P-51D's V-1650-7 engine. But the V-1650-7 was a little better at lower altitude.

The D is faster up to about 4200m. Then the B is a tiny bit faster. The D's second stage supercharger does not kick in untill about 5500m. From about 5500, the D is faster once again untill about 7800m.


The B's second stage Supercharger does not kick in untill about 6500m. Hence the B is faster at 8000m and beyond.


E-bleed:

The D lose's a little more E. The B is a little more nimble, and has a slightly lower stall speed.

Capt. 361stMapleTiger.
http://img52.photobucket.com/albums/v158/Maple_Tiger/FBAA2.gif
Proud member of the FBAA and Nutty Philosohpy Club.

LeadSpitter_
05-13-2004, 04:05 PM
the b and c are armed with marshmellows, the d is armed with pingpong balls

http://img14.photobucket.com/albums/v43/leadspitter/newsig.jpg

Chuck_Older
05-13-2004, 04:25 PM
http://ubbxforums.ubi.com/images/smiley/16x16_smiley-very-happy.gif

As for actual differences, I have in the past made a comment on wing thickness and wing position.

On one I was wrong: I had said that the P-51D had a lower wing. While technically true, the Merlin equipped Mustangs all had this feature, not just the D model, and that is why you see a wooden floor in these aircraft.

The D model has a slightly thicker wing, allowing the machine guns, which had a slightly oblique (angled) installation in the two gun wing Mustangs, to be mounted upright, reducing the frequency of jamming in the weapons.

*****************************
The hillsides ring with, "Free the People",
Or can I hear the echoes from the days of '39?
~ Clash

Korolov
05-13-2004, 04:32 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by LeadSpitter_:
the b and c are armed with marshmellows, the d is armed with pingpong balls
<HR></BLOCKQUOTE>

I think you need to work on your aiming then - all ponies have plenty effective guns for me. http://ubbxforums.ubi.com/images/smiley/16x16_smiley-happy.gif

http://www.mechmodels.com/images/newsig1.jpg

lasersailor184
05-13-2004, 04:48 PM
The basic Idea is that the P51b is lighter, therefor it accelerates and handles a little bit better.

However, the D still has the top speed.

BS87
05-13-2004, 04:48 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Korolov:

I think you need to work on your aiming then - all ponies have plenty effective guns for me. http://ubbxforums.ubi.com/images/smiley/16x16_smiley-happy.gif

http://www.mechmodels.com/images/newsig1.jpg <HR></BLOCKQUOTE>

So would our P38s if they didnt bounce around like james brown on crack http://ubbxforums.ubi.com/images/smiley/16x16_smiley-happy.gif.

lrrp22
05-13-2004, 05:15 PM
C_O,

The wings were identical in thickness, the only difference was the D's sharper angle at the leading edge from the wingroot to just inboard of the inner gun. Mounting the guns at an angle would actually require more vertical space than mounting them upright.

FB's P-51B/C is incorrectly modeled with the D's leading edge crank.

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Chuck_Older:
http://ubbxforums.ubi.com/images/smiley/16x16_smiley-very-happy.gif

As for actual differences, I have in the past made a comment on wing thickness and wing position.

On one I was wrong: I had said that the P-51D had a lower wing. While technically true, the Merlin equipped Mustangs all had this feature, not just the D model, and that is why you see a wooden floor in these aircraft.

The D model has a slightly thicker wing, allowing the machine guns, which had a slightly oblique (angled) installation in the two gun wing Mustangs, to be mounted upright, reducing the frequency of jamming in the weapons.

*****************************
The hillsides ring with, "Free the People",
Or can I hear the echoes from the days of '39?
~ Clash
<HR></BLOCKQUOTE>

Chuck_Older
05-13-2004, 05:35 PM
Are you sure about that?

If I take a square, and it's top and bottom edges were level, then I rotate it 90*, the top angle is higher than the top side used to be. Right, I took geometry http://ubbxforums.ubi.com/images/smiley/16x16_smiley-wink.gif

But in the case of the aircraft, the gun's angle dictated that the feed chutes take an odd path. If my memory serves, in both Bud Fortier's and George Loving's books, they both comment on the thicker wing of the D model.

If I am wtong, I stand corrected, but this was the truth as far as i know it, not something I grabbed out of my @ss

*****************************
The hillsides ring with, "Free the People",
Or can I hear the echoes from the days of '39?
~ Clash

tfu_iain1
05-13-2004, 06:18 PM
hey, don't forget the massive difference in visibility between the three planes

in full real, cockpit visibility is a paramount factor, i have found... you could have the faster, best handling, more stable gun platform with the most firepower, but if you can't see around and in front of you you're up a certain creek minus paddle