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Steve Eagle

Mrs. Bonnie P-51

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I’m pretty sure it was delivered with an Aeroproducts prop as I believe she was a P-51K.  I’ll have to check the serial number to tell if she had the battery relocated.

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Regardless of what she was built with, she was in combat with a Ham Stan prop...

 

Also note that the flaps DO NOT "bleed" down.  Period.  That's from a current P-51D owner/mechanic, and two former WWII P-51 crew chiefs.  And according to the latter, it would take a couple of days for the main gear clam shell doors to open fully (if they ever did at all).  The crew chief has most likely dumped the pressure off the system using the emergency gear handle to gain access to something in the wheel well here.

 

59031fb71ee960f161bec76f7bfb4517.jpg

Edited by Jennings Heilig

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1 minute ago, Jennings Heilig said:

Regardless of what she was built with, she was in combat with a Ham Stan prop...

 

59031fb71ee960f161bec76f7bfb4517.jpg

And per the pic, no battery in the engine compartment.  

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Also PLEASE don't put white pinstripes along side the black stripes on the wings and fuselage.  That's the result of using 2" masking tape and having black overspray.  I've seen countless profiles and decals that are just wrong.  All you need to do it look carefully at the photo.

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4 hours ago, Jennings Heilig said:

Regardless of what she was built with, she was in combat with a Ham Stan prop...

 

 

 

And here she is in combat with an Aeroproducts Prop.... which is what the OP was asking about. Judging by the scoreboard, the Hamilton-Standard prop came shortly after this photo was taken, indicating that she flew at least part of her combat career with an  Aeroproducts prop.

 

Jz0qyr4.jpg

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That was common, especially in the CBI.  The Aeroproducts prop was universally hated by pilots and wrench turners.  It was impossible to keep balanced, and it caused bearing failures in the engine, as well as being uncomfortable to fly.  Supplies of the HS prop were always short, and they were prized scores when they did find them.  

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12 hours ago, Juggernut said:

                   I’ll have to check the serial number to tell if she had the battery relocated.

 

Was there a serial that began the factory move of the battery ?

 

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8 hours ago, MikeMaben said:

 

Was there a serial that began the factory move of the battery ?

 

 

I originally thought so but I'll be damned if I can find it anywhere.  I can't even locate the modification paperwork for it.  I could've sworn the relocation started with the block 25 production at Inglewood (NA) but I'm not finding it.  I also thought the relocation was tied to a radio change as well...couldn't find anything on that either.  I have yet to check the P-51 SIG site and see what I can locate there.

 

SEE MY UPDATED POST BELOW.

 

I did find that the practice of painting the interior aluminum with one coat of zinc chromatic primer (including wheel wells, etc.) began with the block 20 series.

Edited by Juggernut
Found Serial Number Information for Battery Relocation.

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11 hours ago, Jennings Heilig said:

That was common, especially in the CBI.  The Aeroproducts prop was universally hated by pilots and wrench turners.  It was impossible to keep balanced, and it caused bearing failures in the engine, as well as being uncomfortable to fly.  Supplies of the HS prop were always short, and they were prized scores when they did find them.  

 

I have read that the prop suffered from vibration issues but haven't read that it was to the extent you mention.  Can you give me a source for that information ? I'd like to read more about it.

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9 hours ago, MikeMaben said:

 

Was there a serial that began the factory move of the battery ?

 

 

I found it on the P-51 SIG Tech Forum:   The battery was relocated forward of the firewall beginning on 44-84390 (P-51D-25-NT) and 44-74227 (P-51D-30-NA). It does have to do with the installation of the SCR-695 radio set, which is the IFF radio.

 

Source:  North American Aviation "Weekly Service News", dated May 14, 1945, pages 8 and 9.

Edited by Juggernut
Corrected SCR radio from 522 to 695

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24 minutes ago, Juggernut said:

 

I found it on the P-51 SIG Tech Forum:   The battery was relocated forward of the firewall beginning on 44-84390 (P-51D-25-NT) and 44-74227 (P-51D-30-NA). It does have to do with the installation of the SCR-522-A radio set, which is the IFF radio.

 

Source:  North American Aviation "Weekly Service News", dated May 14, 1945, pages 8 and 9.

Correct but I believe it was also a field retro-fit since the IFF set was added to in-service aircraft almost universally.     Only way to know for sure if an earlier model had this mod is if you can find a pic of the left side of the nose to see if the battery cooling scoop is present. 

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