Tech Question for The P-51 Gurus
Sat Mar 22, 2008 7:16 pm
On some P-51Ds there are 2 stencils on access panels aft of the spinner.
What do they say????
Here's one I can partially read it....................................
Coolant Na____ Inhibited
What do they say????
Here's one I can partially read it....................................
Coolant Na____ Inhibited
Re: Tech Question for The P-51 Gurus
Sat Mar 22, 2008 7:22 pm
Jack Cook wrote:On some P-51Ds there are 2 stencils on access panels aft of the spinner.
What do they say????
Here's one I can partially read it....................................
Coolant Na____ Inhibited
It is a chemical added to the coolant or a type of coolant.
NAMBT possibly?
Rich
???
Sat Mar 22, 2008 7:45 pm
Well cr*p no wonder I couldn't make sense of it.
Do you have any idea what the stencil says on the other panel??
Here it is on Ilfrey's a/c...
Do you have any idea what the stencil says on the other panel??
Here it is on Ilfrey's a/c...
Sat Mar 22, 2008 7:47 pm
I believe "NaMBT" was a coolant additive that was developed specifically for the Merlin to counteract the dissimilar crossive effects that the Merlin had with the copper & light alloy aluminum parts used in construction of the engine. This is a common day problem that will haunt a Merlin that is not operated on a regular basis. Some guys use a over the counter product (Automotive) that just does not do the job. 
Robbie
Robbie
Sat Mar 22, 2008 8:11 pm
There is a std stencil for the small panel that is open. The small round opening inside is where you add the coolant to the main coolant system.
Rich
Rich
??
Sat Mar 22, 2008 8:12 pm
and it said............................. 
Re: ??
Sat Mar 22, 2008 8:18 pm
Jack Cook wrote:and it said.............................
I have the blue print for P-51D stencils hanging in our lobby. I am at home. I believe it states coolant spec and quantity.
Rich
????
Sat Mar 22, 2008 8:31 pm
You're close to that pony Rich!! 
Sat Mar 22, 2008 8:34 pm
COOLANT NAMBIT INHIBITED
Re: ????
Sat Mar 22, 2008 8:35 pm
Jack Cook wrote:You're close to that pony Rich!!
Rich, Jack ain't got no stinkin ponies!!
Robbie
???
Sat Mar 22, 2008 8:59 pm
OK-OK so it's actually a large angry lizard 
Do the 2 white marks have any significance??
Do the 2 white marks have any significance??
Sat Mar 22, 2008 9:11 pm
On the panel not shown in the first shot, the only stencil I have seen on it reads:
Coolant
Filler
Filler Instructions Inside
This looks to be a bit different however.
Coolant
Filler
Filler Instructions Inside
This looks to be a bit different however.
Last edited by JohnTerrell on Sat Mar 22, 2008 9:14 pm, edited 2 times in total.
Re: ???
Sat Mar 22, 2008 9:12 pm
Jack Cook wrote:OK-OK so it's actually a large angry lizard
Do the 2 white marks have any significance??
No those are on the prop spinner.
???
Sat Mar 22, 2008 9:16 pm
Has opposed to be on the lizard 
Re: ???
Sat Mar 22, 2008 9:17 pm
Jack Cook wrote:OK-OK so it's actually a large angry lizard
Do the 2 white marks have any significance??
Might index the aft spinner to the #1 prop blade.
Also there were marks on some spinners and prop blades to aid in sighting the gun camera. There was a mark on the center lower carb intake. Align with the mark on the spinner. One mark allows you to sight gun camera on a distant ground target. The other spinner mark aligns a prop blade. On the back of the prop blade was a series of range marks that could be used to sight the gun camera as well IIRC.
Rich