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Post by racket on Sept 17, 2024 4:10:00 GMT -5
Hi Guys
Did a test run today with a couple of mods from the last test , I shimmed the turb exducer clearance back closer to normal and fitted longer fuel injectors to displace the spray from hitting the front wall .
Spoolup was better from the exducer doing more work , but combustion was horrible with flames out of the turbine from low power to higher powers .............the combustor isn't long enough to cope with even a small increase of ~10mm in the rearward placement of the injectors.
The only positive was the poor combustion , it finally showed just how marginal things have been and might account for a lot of my temperature problems in the past .
LOL..............the more I think about it the more I'm convinced I'll never get this comp wheel tamed with my current setup .
Cheers John
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Post by racket on Sept 18, 2024 3:27:54 GMT -5
Hi Guys
Engine is pulled apart in preparation for conversion to an axial turb wheel.
The front end should be OK , so just the shaft tunnel , flametube and hot section to work on .............no hurry , so I'll go at it one job at a time , considering I've wasted 2 years going around in circles with this comp wheel , it might be the quickest solution :-)
LOL , maybe I should start a new Build Thread so that I can leave all my failures behind .
Cheers John
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Post by racket on Sept 19, 2024 4:12:04 GMT -5
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