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Post by Johansson on Jan 17, 2024 16:03:53 GMT -5
Using two scuba tanks connected together helps a lot with the spoolup, the pressure drops quickly with only one small bottle.
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Post by andym on Jan 17, 2024 16:42:28 GMT -5
Hi Andy That was a nice surprise to wake up to this morning ..............congratulations :-) She's a weighty rotor to get spinning , takes a lot longer than the HX82 . You've done it ...............heh heh time to relax and savor the moment , that 130 mm inducer is one big hole in the front . You still may need to fit a surge slot to improve spoolup speed , though it didn't sound/look too bad .................lotsa interesting times ahead :-) Cheers John Glad you liked...... plenty more to come this yaer..... afterburner going to rock  |
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Post by andym on Jan 17, 2024 16:45:35 GMT -5
Using two scuba tanks connected together helps a lot with the spoolup, the pressure drops quickly with only one small bottle. Yep..... did that with the mini, it helped.... but once we knew the engine we could drop down to one, think might be having an isuue with QRC, will mod or raplace But oh man the sound  |
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Post by andym on Jan 22, 2024 14:29:12 GMT -5
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Post by Johansson on Jan 22, 2024 15:07:48 GMT -5
Best of luck! What is the calculated max P2?
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Post by andym on Jan 22, 2024 15:41:52 GMT -5
Best of luck! What is the calculated max P2? Not much in this test, but the planned is 70 psi |
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Post by Johansson on Jan 22, 2024 15:46:57 GMT -5
4.8 bar, that will have her screaming! |
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Jan 22, 2024 16:49:57 GMT -5
Good luck Andy👍👍👍
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Post by andym on Jan 23, 2024 15:14:06 GMT -5
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Post by Johansson on Jan 23, 2024 15:35:46 GMT -5
Ha ha! Your engine is loud but your neighbour is louder. *LOL*
A cleaner start this time, did you make any changes from last time?
Why didn´t the AB want to stay lit? A bit strange flameouts from it, what was the AB pump fuel pressure?
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Post by andym on Jan 23, 2024 15:46:10 GMT -5
Ha ha! Your engine is loud but your neighbour is louder. *LOL* A cleaner start this time, did you make any changes from last time? Why didn´t the AB want to stay lit? A bit strange flameouts from it, what was the AB pump fuel pressure? Think it being a little warmer helped...... full air from the start..... oil turned on as air was.... afterburner ? think need more fuel.... another 5 mm off nozzle...... open up fuel nozzle for afterburner..... Think need to do long run, get engine up to full power..... then work on afterburner..... have some video of display..... nothing much to show |
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Post by racket on Jan 23, 2024 18:57:02 GMT -5
Hi Andy
Your EGT numbers sorta decayed away , did something happen to the thermocouple ??
Fast spoolup though ..........nice :-)
Got that sorted , one off the list .
Cheers
John
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Post by andym on Jan 24, 2024 1:45:43 GMT -5
Hi Andy Your EGT numbers sorta decayed away , did something happen to the thermocouple ?? Fast spoolup though ..........nice :-) Got that sorted , one off the list . Cheers John Yep sorry, meant to mention, it was not screwed in, so it came out  something I will sort before next test |
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Post by racket on Jan 24, 2024 4:51:22 GMT -5
Hi Andy
LOL ...........I thought for moment, man , this engine is running real cool , but then when it got down to just a few hundred degrees I started getting suspicious :-)
With all the things that can go wrong when starting up a new engine , thats a very minor issue , progress is great , certainly impressed the camera man ;-) .
Cheers
John
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Post by andym on Jan 24, 2024 10:53:13 GMT -5
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something I will sort before next test