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dodgem37

Tamiya P-51D, Sinai, 1956, Finished, 2.1.18

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Finishing up the linkage systems.

DSCN7521_zps7647737c.jpg

Top link system is to the Hot Air Door Control.  I believe it draws air from the engine compartment.  As you can see at the bottom it's not attached.  This way I can remove the ducting.  The larger raised area on the air duct to which the single link is attached is supposed to be/house a screen, but I didn't bother.  Bottom system is to Filtered Air Door and Ram Air Gate.  Filtered Air Door is for the air openings on the side of the bottom cowling.  The Ram Air Gate is for the opening under the propeller.  When one is all of the way open the other is all the way closed.  In-between air can enter the duct thru each.  If there is an in-between.  I don't know.

 

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To the right: Right-most is to the Filtered Air Door/Ram Air Gate.  Next is the Hot Air Door Control Attachment.  To the left. Top connection is to the Ram Air Gate.  Bottom connection is to the Filtered Air Door.

 

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Filtered Air Door connection.  The Ram Air Gate connections are situated within the Filtered Air Door box.  Seen better above.  I didn't bother with the connection leading into the box.  Nor the link for the other Filtered Air Door.  Too many things in the way.

 

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This line is the Manifold Pressure Line which goes to the instrument panel.  I called it the 'Fuel Pressure Line' in my earlier post.  This is the line which terminated in the vertical along this frame.  The clean end slips into drilled hex rod and the other end slips onto some wire protruding from the primer connection.

 

I don't know if this engine compartment linkage will fit as I didn't put the engine compartment together with all of the hoses and whatnot.  But the system along the intake fits.  If it doesn't I'll remove it and move on.  I'll see later.

 

Not much engine compartment work to do, which is a relief.  Not that I'm tired of it, it's just a lot of little bits.  I still have the firewall to complete and the coolant connections Wolf mentioned.

 

Until then.

Thank you for following along.

Sincerely,

Mark

Edited by dodgem37

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Mark...This is madness.....and you know what....

 

 

I Love this, all them details is crazy, i just lovit....

 

Alot of knowledge involved here about this.....

 

So keep this model build late night novel coming.....

 

/Mal

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Guest Peterpools

Brother Bear

Just like going back in time and watching the Mustangs roll down the line, being assembled part by part. Incredible work and brilliant engineering.

Keep 'em coming

Peter

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C'mon Mark, quit foolin' around! We want all those linkages fitting and functional:rofl:

 

I noticed that you reattached the rear engine attachment point that you'd previously removed from the lower firewall. What's the story on that?

 

Don't ever take these pics down, I'll need them for reference. Either that or I'll glue my cowl pieces on and be done with it.

 

Cheers,

Wolf

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Guest

This build makes me feel so inadequate. Just so ,so, beyond me ! Great stuff Mark........Harv :popcorn:

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Thank you, Mal.  I enjoy doing all of these little details.  Especially when they work out.  Using manuals satisfies my curiosity and keeps me involved beyond the plastic.

 

Well, if SWMBO has her way, my work will be slowing down.  She has me stripping/sanding cabinets for a kitchen re-do.  Now my modeling time will have to be sneaky.

 

Thank you, Brother Bear.

 

I know what you mean, Wolf.  To have the linkage systems be movable would have been very wild indeed.  Maybe in 1/24th scale.

 

Putting the tab back on is a long and convoluted story.  With the tab off of the firewall the engine had two points of contact: the round opening in the cowling face, behind the propeller; and the air duct tab.

 

While assembling the compartment for evaluations the engine wouldn't consistently align (horizontally or vertically) because there wasn't a (stable) constant.  The misalignment wasn't great, but off is off.  If engine alignment was off then everything added was going to be off.

 

The only way the engine was going to be consistently stable with the tab removed was if the facing and air duct were glued and secure.  These two points would then become the constants necessary for proper alignment.  To do so would necessitate gluing them to at least one side of the fuselage, then tabbing in and taping that side to the other side, or gluing them to both fuselage halves and gluing the fuselage halves together.

 

To glue these parts to one side of the fuselage would cause them to project from the fuselage with their connection being a weak/breaking point.  Gluing them to both fuselage halves would not allow access from underneath the bay nor access to the engine bottom: no piping.

 

Although I didn't investigate this: I think I would also be required to finish and fit the cockpit and firewall.  I'm not positive, as I only investigated engine bay access and alignment.

 

By replacing the tab I had a constantly stable platform and was able to access the area in the round, the single most important consideration, something I would not have been able to do with parts in place.  At least I imagined I would not have been able to do with parts in place.  Since I didn't investigate anything after the instability issue I don't know. 

 

I haven't considered removing it a second time only because I haven't thought of removing it a second time.  But with everything in place the space should actually look grand with the tab removed.

 

The Photobucket account I have is called Professional, I think that is what they label it.  As far as I understand I'll have unlimited storage for as long as I keep paying.  So hopefully the imagery will remain until at least after you finish your build!

 

I thought this stuff was in the CDs I sent you.

 

I may put on the lower cowl.  I need to think about it more.  I know its' placement will visually: tie the panel smoothness of the front with the panel smoothness of the fuselage; and more importantly, offer a nice rough/smooth contrast between the engine bay top and bottom halves, and as such, will cause the top half to become a center of interest.  That's the ticket.

 

Sincerely,

Mark

Edited by dodgem37

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Thank you, Jay.  Your 'F' is stupendous!  I love what you've done with it.

 

Thank you, Harvey.  I know how you feel.  I see stuff done by others and I just don't know how they do it.  Tom, both Peters, Loic, Wolf, Chuck, Oliver, Richard come to mind.  I don't know if it's beyond you, you do pretty danged good work yourself.

 

Sincerely,

Mark

Edited by dodgem37

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Well, I have to add my name to the list. The desire, the research, the attention to detail, the abilities and skills as well as the patience you have developed are incredible. Folks like you, Chuck Sawyer, Wolf Buddee and others have continued to amaze me and have really challenged me to up my game. Thanks for sharing your research, tools, methods and skills with the rest of us.

 

Bud  

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I couldn't say it better than Budman. Mark, your persistence, patience, attention and joy of research is exemplary. The results speak for themselves! Love what you have done so far. Great details!

Edited by Tomek

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Thank you, Bud, thank you, Tomek for your praise, comments, and comparisons.  I'm just glad to meet folks as geeky as me who are interested in the same stuff I am, unlike my wife!

 

Sincerely,

Mark

Edited by dodgem37

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Still working in the engine compartment.

DSCN7619_zpsngnqpa7l.jpg

Added the right side Filtered Air Door link.  The forward engine-bearing structure curves down and touches the top of the duct.  This interferes with the ability to bridge this space with rod.

 

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Link similar to left side.

 

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Same here.

 

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The white burned-out blob on the coolant line is the Oil Temperature Bulb (Resistance Type).  That's weird, this is a coolant line.  I'll double-check, but  it is the only line in the neighborhood.  Anyway, it is supposed to curve upward, not downward as I have it.  I'll just look into this further.

 

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The connection into the right rocker head is the Tachometer Generator.  Also, I removed the yellow Tamiya tape I had used as connections and cut and spliced heat-shrink tubing and applied it wherever I had the tape.  Here it is on the Magneto/Distribution Conduit connections.  Just under the Tachometer is a white rod, that is the hex rod to which the Manifold Pressure Line inserts.  Eagle eyes will notice I lost a few linkages.  Oh well.

 

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I worked on all of the previous junk while I was figuring this out.  These are the coolant connections for which Wolf provided imagery.  Thank you, Brother.  The front of the connection has a rod projecting from it.  This ties into the holes I drilled into the tank, thus pin-mounting the location for structural support.  Went wild and added cut heat-shrink tube with strip band connectors.  Those with eagle eyes will notice some white toward the bottom front.  The kit pin connection broke off and I had to make a new one.  Not a fun chore.  Alignment was ridiculously critical.

 

DSCN7626_zpssfu5ag5v.jpg

Last but not least, all together now.

 

Thank you one and all.

Sincerely,

Mark

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Guest Peterpools

Brother Bear

I only wish I had eagle eye ... so very far from it.

Absolutely outstanding and the details down to the tiniest ones are unbelievable!

Completely engrossed in the project.

Keep 'em comijng

Peter

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