Part 1: Allison V-1710 Dynamometer Explained
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- เผยแพร่เมื่อ 2 ต.ค. 2022
- Bud Wheeler takes you around his exclusive dynamometer for testing vintage aircraft engines and explains the various parts and features in his shop. Part two will actually feature engine start up and testing. For more information, visit AceAllisons.com. Be sure to watch Part 2 for a full demonstration of our dynamometer.
At Ace Allisons we test the Allison aircraft engines we rebuild for up to 6 hours on our calibrated dynamometer. We have the only dynamometer built to test Allison V-1710 aircraft engines in the world. Your engine is ready to install and fly at delivery.
What Kind of Planes use an Allison Engine?
For over 30 years, ACE Allisons has specialized in overhauling and repairing Allison V-1710 aircraft engines. The robust Allison V-1710 aircraft engine of WWII fame is still powering examples of the magnificent P-38 Lightning, P-39 Airacobra, P-40 Tomahawk, Kittyhawk, Warhawk, the early P-51 Mustang, as well as the latter P-63 Kingcobras and P-82E/F Twin Mustangs. In addition, it is the engine of choice for many newly built replica aircraft such as the V-12 Yaks, P-51As and full scale wooded Spitfires.
How We Serve the WarBird Community
ACE Allisons has solved the problems of modern Warbird operators by developing, and obtaining FAA approvals, for replacement parts appropriate to a long life and smooth operation of today's V-1710. ACE Allisons incorporates these parts into the engines we overhaul, resulting in a smooth running, clean and reliable engine able to serve the needs of the Allison powered Warbird community. These new parts, along with our experienced and skilled staff, are the Difference built into an ACE Allisons V-1710.
Practice, and critical testing, makes perfect!
Our skilled and experienced staff builds and supports these engines using our extensive engineering database, stock of critical spare parts and testing equipment. Every engine leaving the shop is fully exercised and qualified on our calibrated dynamometer. Your engine is ready to install and fly at delivery. We encourage every owner to attend the final run-in to see for themselves how the engine performs and handles over the full power range. - ยานยนต์และพาหนะ
![[TH] VCT Pacific Stage 2 - Week 4 Day 3 // GEN vs TS | PRX vs ZETA](http://i.ytimg.com/vi/nspkjQuZve0/mqdefault.jpg)
nothing but craftsmanship! Thank you for all the work you do!
I worked in the UK version. It used a Heenan and Froud dynomometer and the whole bed could be tilted to 45 Deg. We tested the Meteor engine which was the tank version of the Rolls Royce Merlin. There was a seperate test cell for personnel. I did on one occasion as an apprentice walk past a Merlin engine going full chat. I can still hear it 50 years later. I did get a rolliken - bl**dy health and safety.
I enjoy their explanations with or in a relationship to certain things to help understand the things that mechanisms function. Maintenance is life.
Nice presentation Bud, good to see you again!
When I was a kid we would go to tractor pulls and I really loved when one with an Allison engine would run. The sound is very unique
I'm so glad I found these two vids! So informative and fun.
Looks like an awesome place to work, vast amounts of knowledge everywhere!!!
Always wondered who in 2022 who rebuilt our favorite V12's - Allison and Merlins... now i know. Great to see.. Thanks
Awesome commitment to American Engineering. Thanks for keeping these running.
Loved to have seen one dyno run.
Thanks for Sharing! Nice Stand!
Great video and explanations!
Well this is fascinating...
Now a face to the name. Ol Live Wire tractor out of PA, Bob Whittenbrader, says Engine by Bud Wheeler!
Would like to see more of the engine internal repair videos.
Brilliant did wonder what to use as a load on 2000 hp motor, an adjustable jet compressor of course
Impressive stuff i always wondered what a dyno for a engine like that would be like.
Finally.. so nice to hear someone within the USA speaking metric as I have no reference to say whats 100 F ... we international viewers without doing a bunch of conversions have no idea , So thank you from me Kris P.S Whats a gallon ?? LoL 🤪😜🤨
I have always considered the Allison 1710 more durable and robust than the Rolls/Merlin.
I would love to see a complete teardown and rebuild of both with a part-by-part comparison.
From what I hear, Allisons are a REAL PAIN to rebuild. But worth it.
Wow. J79 compressor section. Art Arfons had a J79 in his Green Monster land speed record car. That engine was supposed to be "not available" to civilians back then, and the Air Force gave him a hard time about having one. I suppose years later, it has been declassified, and not a big deal to own. But it must have been kind of hard to find and expensive.
How much power do you think the compressor section can absorb?
Back in 1981 I was an engineering co-op student at Allison in Indianapolis, and spent 3 months as a mechanic in engineering test. The facilities they had were JUST PLAIN AWESOME. I worked in the large-scale compressor test facility for about a month, where they were testing the redesigned compressor for the T56 Series IV. That compressor took about 4500 HP to drive at rated speed and pressure ratio. The test stand used the hot sections from old J71 turbojets to drive the compressor being tested. I assisted the technicians during installation of the test compressor, hooking up instrumentation, and taking data during test. My biggest job was removing and replacing the fuel injection nozzles on the J71 hot section. This was all memorable stuff for a 19-year-old to be involved with.
He is proud of his advanced tool he built and I don't blame him he must work on all the Alison engins to have invested such a stand .
Horsepower (Power) is proportional to the measured dynamic torque times revolutions (HP ≈ Torque * RPM). We're informed that the torque transducer is calibrated, so the attached computer can do the math. Lovely to see it all pays out for the firm.
Torque (lb*ft) X rotational speed (RPM) / 5252
Very interesting. Can you tell us what the oil consumption of a engine sound be. I was always led to believe it's high. But how high?
On the J79 is does the hydraulic system to change the vane angle use hydraulic fluid or another type of fluid?
We use ATF but almost anything will work. Looking for smooth operation.
Such a nice setup and a really clever absorber to use the compressor! But how do you start the engine? Do you use the starter for the jet engine or is there a clutch?
We use the Allison engine starter, no clutch involved, Allison and turbine spin together without difficulty. When the Allison starts both spin together measuring the torque thru the torque transducer
This was really interesting, thanks for posting, the load compressor vs water appealed to me, is this common?
The idea by another person 30 years ago using a J-47. The current J-79 was expanding upon his idea. This current test stand has been a culmination of many changes and improvements over the past 30 years. No one else has decided to adopt this platform
@@aceallisons2639 k
Is the outlet for the compressor a fixed size, so the only thing you need to change for different loads is the stator vanes?
that is correct
Does this dyno do counter-rotation engines?
The test stand has a gearbox that is manufactured to accommodate both right-hand and left -hand Allison engines only. This is not a universal test stand for all types of engines it was manufactured only to test our Allison aircraft engines for installation for flight.
Why is there so many exhausts on this engine for a v 12
Good question. The engine is a V-12 with 4 valve per cylinder or 2 exhaust and 2 intake per cylinder, therefore the 2 exhaust stacks per cylinder. Very advanced stuff for 1943
I never knew that turbans had bearings!
pcmacd ANYTHING that turns, rotates has to have a bearing to ride on !!! DUUUUUHH!!!!!!!!
You could have made the wiring neater
Interesting that you only go to 60" MAP. They're capable of at least 84" of MAP on 150 octane fuel.
All Allisons that operated during WW2 were rated on 100 octane fuel. 150 octane was not widely available if at all.. The engine demonstrated is a single stage supercharger 8.8to 1 ratio with a war emergency rating of 60"map with a maximumof 62" map at the test site 3000 RPM. The only Allison engine that would make 85"map would have been 2 stages of supercharging -109 or a P-63 engine needing water / alcohol injection to prevent detonation.
We are not all Americans so for the rest of the world 1710 cubic inches is 28,021.88 cubic centimeters.
Или 28 литров.
jonnie8oy To find liters from cubic inches divide by 60= 28.5 liters and you will be very close !!!!! DUUUUUHHH!!!!!!!!
JONNIE8oy When the Allison was designed and built in AMERICA in the late 1930 the liter crap was not around, cubic inch displacement Why the early Liberty V12 was 1650 cu in and the Later RR Merlin was 1650 cu in !!!!!
@@wilburfinnigan2142 My answer is correct, according to Google, but maybe Google is wrong. I was just trying to be helpful. No need to jump down my throat.