Aces High Bulletin Board
General Forums => The O' Club => Topic started by: icepac on September 11, 2012, 10:24:07 AM
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The course is shorter than last year's course to bring down speeds but I think there may be a 500mph lap.
Precious metal doing 450mph laps.
http://www.youtube.com/watch?v=reG3_cnXpkI
There should be a live stream from the guys linked below who have a video preview.
http://www.liveairshowtv.com/video.php?vid=86
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:aok
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Really wanted to go this year, try to make it up for the last weekend, but finances are a bit too tight to make the party.
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Even through youtube that is a beautiful sound.
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Ill be there :aok
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Missed this year ..just too much that conspired to hold me back.
Hopin I can make next year.
-GE aka Frank
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Precious Metal in flight.
(http://www.pbase.com/image/145976218/original.jpg)
Furias had difficulty retracting the gear but he finally got them up and did a few hot laps.
Sadly the gear folded on landing.
Qualifying speeds in the link below.
http://reports.airrace.org/2012/2012.Unlimited.Qualifiers.Report.html
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I'm following the T-6s closely this year, in particular the gold heat comming up tomorrow.
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Strege streaked into the lead in very heat she raced and won sunday gold.
Rare Bear had cooling issues that never worked out and had to pull up in the sunday heat.
Precious metal had a gear door issue.
(http://www.pbase.com/wjpearce/image/146114836/original.jpg)
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Strege streaked into the lead in very heat she raced and won sunday gold.
Rare Bear had cooling issues that never worked out and had to pull up in the sunday heat.
Precious metal had a gear door issue.
(http://www.pbase.com/wjpearce/image/146114836/original.jpg)
WOW, Nice photo :rock
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I just noticed you can see the gear door slightly open in the first picture.
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this maybe a stupid question but why is the intake next to the spinner on top??
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I would guess for extra cooling but Im not a mechanic.
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Strege streaked into the lead in very heat she raced and won sunday gold.
Rare Bear had cooling issues that never worked out and had to pull up in the sunday heat.
Precious metal had a gear door issue.
(http://www.pbase.com/wjpearce/image/146114836/original.jpg)
Leaking a lot more oil in that later picture, and got some smoke (looks like coolant steam) comming out the oil cooler door, probabley just from pushing her hard during the races. :aok
I just noticed you can see the gear door slightly open in the first picture.
Good catch, likely someone kicked it on the taxiway and nobody reported/caught it in time. Not uncommon.
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this maybe a stupid question but why is the intake next to the spinner on top??
I would guess for extra cooling but Im not a mechanic.
I'm looking for a goodp picture/cutaway to share with you two now. In a nutshell, in a normal late-model P-51 the air intake opening located under the spinner takes the air uner the engine through a trunk, after traveling all the way to the back of the engine, it makes a sharp 90degree turn up and travels a little ways further to the back-top of the engine, where the rather large supercharger is located. Once through the supercharger, it is fed from the top-aft of the engine to the banks/engine.... it works but is inherantly/obviously not the most effecient routing (when talking racing and getting the most outa your most) given you just took the air from the intake on the bottom of the spinner 270-degrees around the entire length of a merlin V-12.
Not the best angle, but this cutaway has fantastic detail and you can see most of what I'm describing in it.
(http://www.haynes.co.uk/desktops/images/fullsize/Haynes_P51Mustang_1600by1200.jpg)
The earleir mustangs had the intake on the top, but this was considered an obstruction and the relocation of it greatly/vastly improoved a pilots view looking forward or over the nose.
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Then again, I should probabley just check my own photo collection first as I found probabley the bestest to demonstrate my bableing.
(http://i675.photobucket.com/albums/vv115/Babalon84/CAF%20SoCal/IMAG0046.jpg)
This photo is when we removed the heads and banks last winter for a top-half overhaul (a royal and very necessary PITFA, each bank of 6 jugs and heads (so one each side in a V-12 - so only half) has something close to over 120 O-rings around the all the heads and valves (4 per jug) requireing replacment... anywho), no better time to see the supercharger without any obstruction (its the big black boxy thing where the upper-aft of the engine is supposed to be, with a rag (professional-grade dust retarder) stuffed in the now exposed/open port feeding to the engine).
Edit: I probabley have the original file if anoyne wants or needs (higher definition/detail and not compressed and processed by photobucket).
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Strege streaked into the lead in very heat she raced and won sunday gold.
Rare Bear had cooling issues that never worked out and had to pull up in the sunday heat.
Precious metal had a gear door issue.
(http://www.pbase.com/wjpearce/image/146114836/original.jpg)
that's a good photo....what's coming out the cooling door there?
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The mist you see is "adi fluid" that is sprayed on oil coolers but some planes use a "boil off" scheme.
The box behind the engine is where the air/water intercooler normally sits with the curved casting you can barely see below and behind it being the supercharger itself.
Most, if not all reno planes are now "pipe engines" in that the intercoolers are replaced with a pipe and they use alcohol/water (adi fluid) to cool the intake charge.
The proper term is really "aftercooler" especially in two stage systems that use a water cooled shroud around the supercharger which would actually be the "intercooler" but, if you use the wrong terminology enough times, it becomes accepted as correct much like the term "NOS" which people now use instead of N20 or "nitrous oxide".
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The mist you see is "adi fluid" that is sprayed on oil coolers but some planes use a "boil off" scheme.
The box behind the engine is where the air/water intercooler normally sits with the curved casting you can barely see below and behind it being the supercharger itself.
Most, if not all reno planes are now "pipe engines" in that the intercoolers are replaced with a pipe and they use alcohol/water (adi fluid) to cool the intake charge.
The proper term is really "aftercooler" especially in two stage systems that use a water cooled shroud around the supercharger which would actually be the "intercooler" but, if you use the wrong terminology enough times, it becomes accepted as correct much like the term "NOS" which people now use instead of N20 or "nitrous oxide".
I was curious if it was indeed adi, had a strong hunch with it being a racer and all. It's definetley been modified, I also noticed the radiator behind the oil cooler is missing or been removed/modified, so I also suspected the entire aftercooler-supercharger system is absent/missing/heavily-modified...
Does she usualy drool that much oil (during races)?
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Then again, I should probabley just check my own photo collection first as I found probabley the bestest to demonstrate my bableing.
(http://i675.photobucket.com/albums/vv115/Babalon84/CAF%20SoCal/IMAG0046.jpg)
This photo is when we removed the heads and banks last winter for a top-half overhaul (a royal and very necessary PITFA, each bank of 6 jugs and heads (so one each side in a V-12 - so only half) has something close to over 120 O-rings around the all the heads and valves (4 per jug) requireing replacment... anywho), no better time to see the supercharger without any obstruction (its the big black boxy thing where the upper-aft of the engine is supposed to be, with a rag (professional-grade dust retarder) stuffed in the now exposed/open port feeding to the engine).
Edit: I probabley have the original file if anoyne wants or needs (higher definition/detail and not compressed and processed by photobucket).
That was my second guess, but it looks like that air intake would go right over the cylinders so cooling came to mind.
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Then again, I should probabley just check my own photo collection first as I found probabley the bestest to demonstrate my bableing.
This photo is when we removed the heads and banks last winter for a top-half overhaul (a royal and very necessary PITFA, each bank of 6 jugs and heads (so one each side in a V-12 - so only half) has something close to over 120 O-rings around the all the heads and valves (4 per jug) requireing replacment... anywho), no better time to see the supercharger without any obstruction (its the big black boxy thing where the upper-aft of the engine is supposed to be, with a rag (professional-grade dust retarder) stuffed in the now exposed/open port feeding to the engine).
thanks for the info, quite cool
rag (professional-grade dust retarder)
and this I will have to remember :aok :lol
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Man .. would have loved to been elbow deep in stuff like that when I was able.
Ultimate hot rods :)
-Frank aka GE