Sabre Jet Engine test run 2024 

Jet wash gulley used to be jet wash alley.

This engine is an addition to the population of powerplants for the Sabre. The Iroquois project has been dormant for the last ten years, but I hope the owner renews his interest in restoring it.

​@@AgentJayZare there many Sabre engines left? I thought you owned the Iroquois engine when you traded a bunch of World War II English aircraft parts for the Iroquois that was in the UK at the time? Is that not the case? Is the engine complete or is it missing a lot of parts

This one was in as-stored condition after decades of storage, and was restored to flying condition. 3200 hours, parts and testing extra.

Oil pressure is nothing more than an indication of the resistance to flow of oil... getting to where it does its job. The roller bearings in this engine will be fine on wind down even if their oil supply is totally stopped. It's not though. as long as the engine is turning, the pumps are pumping oil.

@@AgentJayZThanks! I don’t know much about the finer points of gas turbine engines like this beast - always cool to learn more about how they do their thing.

You're everywhere, man.

Very good eye. Start cart power was shut down a few seconds early, and it took a nudge of throttle to get the engine up to 38%, which is ground idle.

That is a sound made by the fuel pumps at extremely low rpm.

Nice video Agent JayZ! Do you use a fresh batch/fill of lubricating oil for each engine you run in the test cell, or can you re-use it? Your videos really make me appreciate how much development effort has gone into the design and your efforts in rebuilding these amazing machines. Nice!

We always start with new oil, and when finished with it, we save it for things like the hydraulic test bench and the air dyno. That oil is over 30 bucks per litre (actually a quart).

Synthetic gas turbine engine oil. We use Eastman 2380 or Mobil Jet 2. Max consumption is 1.5 pints per hour.

Both!

Yes, that is what first came to mind on this 85 F day.

@@AgentJayZI see you speak sarcasm

The Russians developed one for snow removal…There is even one to de-ice train snow removal plows after their runs…

You were looking at the wrong gauge.

Yes. The bellmouth is designed to remedy the loss of inlet flow due to the aircraft not moving.

@@AgentJayZ thank you, sir!

Read my mind. This is something I've always wondered over the last several years. The engine no longer has to suck as much air when it's moving into it, does that affect efficiency? Max thrust? I was literally going to ask the same question while watching this until I saw you asked it already :]

Installation losses are a fact of life. That was the speciality of one of my retired colleagues, who will be one of the little gang of R-R retirees (aka The Escape Committee) meeting up in a couple of hours time. There are bound to be pressure losses in a typical aircraft installation, which may have a significant length of of intake duct, as compared to a bellmouth intake. This will obviously be the case with when the aircraft is stationary at the end of the runway and even into flight. However, at high speed, the intake ram effect will tend to negate the intake losses, if not more than compensate for them.

Who? Have a look at the community this engine will live in. My video for you is about Oshkosh, and it's called Warbird Jets. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-TXUWhD1H-v8.htmlsi=_Z-JqPlXwDtqQ3PX

That's the way it's supposed to look. Have a look at my vid: Orenda 14 in the Sabre... made a long time ago.

I've mentioned that to them. They have no response.

I talk gallons for my majority US viewers. I think in litres, so I often forget their are two different sized gallons.

F

I was wondering that too, maybe a percentage of Tmax or 1/10th of degrees F (ex: 70 = 700F)? Since from what I read in a search a typical EGT ranges from 600F to 1000F I guess you could say either of my answers would look correct.

You are looking at the wrong gauge. Explained in the video. My first response was incorrect. I'll fix that now.

@@AgentJayZ the reading was 70. Nobody looking at the screen during the test?

My mistake. We've tested two Orendas in less than a week, both with different instrumentation. This engine was using the aircraft readout in degrees C. When using the computer screen, the units are degrees F. Sorry about the mistake.