praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Jul 2, 2021 15:03:25 GMT -5
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Jul 2, 2021 15:11:20 GMT -5
Also got a new compressor wheel. A bit larger and 8+8 config. Its from a Mitsubishi TD 13 turbo. Andy      |
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ripp
Veteran Member
I'm sorry, I don't speak english, so I torment you (and myself) with a translation program,Sorry
Joined: January 2013
Posts: 237
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Post by ripp on Jul 13, 2021 2:27:07 GMT -5
Hi Andy, nice work as always! I'm curious how the turbine runs, hopefully the system won't swing open because you use a diffuser with 12 blades and a compressor wheel with 8 blades and you make a symmetrical system.  then would help a 13th diffuser blades. I have upscaled a GR180 turbine for comparison  Cheers Ralph ps. was macht Skype? |
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Jul 19, 2021 13:25:38 GMT -5
Hi JATO,
the engine is ready for some noise again.
Took a while to collect all material, whats needed.
Subtitles available soon!
Its always a mess to tell the youtube software, what to translate.
@ralph, Skype is still down.
Andy
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Post by racket on Jul 19, 2021 17:26:10 GMT -5
Hi Andy
LOL.............nature friendly ;-)
Excellent job , one very happy builder .
Loved the "snow" flakes on spoolup :-)
Cheers
John
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Post by racket on Jul 19, 2021 17:46:19 GMT -5
Hi Patty
It can only be an efficiency thing if flow areas are the same , our radial stages can be a lot more efficient than 70% , I generally work on 80% when using a NGV stator.
Cheers
John
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Post by madpatty on Jul 19, 2021 17:48:26 GMT -5
Hi Patty It can only be an efficiency thing if flow areas are the same , our radial stages can be a lot more efficient than 70% , I generally work on 80% when using a NGV stator. Cheers John Thanks Racket. Sorry I realized I posted it in the Andy's thread whereas had to post it in my thread. But still thanks for the reply here. |
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praendy2203
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Joined: August 2020
Posts: 183
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Post by praendy2203 on Oct 16, 2021 15:28:03 GMT -5
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Oct 16, 2021 15:37:11 GMT -5
Hi from Germany,
reshaped the diffuser again.
Now I try 15 wedges.
Thats better using a 16 bladed comp wheel😉
It was a hard way to rebuild all wedges.
No machines anymore😤
So I made a matching piece of wood and casted it 15 times.
After all holes drilled and surfaces sanded, filled all in between with hot candle wax.
After cooling, I went to a friend and finished all in his lathe.
Tomorrow test run👍👍👍
Cheers Andy
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Post by jetjeff on Oct 18, 2021 16:43:09 GMT -5
Hi Praendy,
No machines anymore,,,what happened?
Jeff
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Oct 18, 2021 17:27:57 GMT -5
Hi Jeff,
my airline decided to reducing our fleet from 39 aircraft to 22.
Also the hangar and all workshops will close in 2022.
So all machines, cars and material are already sold.
From my colleagues are only 20 still there.
Me and ~40 more had to go.
But next year I will buy a good used lathe and a mill.
So only 2,5 months to wait for a good money they will pay in December👍
Andy
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Oct 30, 2021 9:37:09 GMT -5
Hi,
new video available 
Andy
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Post by jetjeff on Oct 30, 2021 12:21:57 GMT -5
Hi Andy,
Very nice.
Regards
Jeff
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praendy2203
Veteran Member
Joined: August 2020
Posts: 183
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Post by praendy2203 on Oct 30, 2021 16:42:38 GMT -5
Hi,
me again😁
Short update video from the todays video.
Still 7000 rpm to go, so there is space for some thrust😉
Andy
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Post by racket on Oct 30, 2021 17:16:40 GMT -5
Hi Andy
Very respectable "numbers" :-)
That last 10% of RPM will see a big increase in pressures/thrust , ........ >50 kgs thrust ?? .
You should be very proud of your build , its doing what it should , a real credit to your perseverence .
Cheers
John
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