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Old 03-25-2009, 02:35 AM
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SpiderJets
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Default RE: New JetJoe J-Junior 4lbs turbine


ORIGINAL: sKrUb_69

well by looking at the video of jjj he did manage to get it to 172,900 rpms which was at 2:14 in to the video. well glad to see a video of one running now lets see one a full throttle and in a aircraft..... Also we now back on track of what this thread was started for in the first place, not bashing jj and its customers...

Sorry, but I am not impressed. Idle RPM in this turbine size is 99.000 RPM, and you get the thrust in the top RPMs, just like with any other turbine. 172.900 is at first sight not even close to half real thrust of what you would expect.
I would like to have an idea how much thrust it produces in Newton at its current max RPM.
The real fun only starts as from 220.000, and the difference between "fast" and "very fast" is setting mine(s) at 237.000 or at 241.000