Engines > Your Own Design
Junkers CLM
Kim:
--- Quote from: RReid on February 23, 2025, 03:24:00 pm ---Lots of detailed and finicky work embodied in those recent sequences. Nicely done and great progress! :ThumbsUp: :ThumbsUp: :wine1:
--- End quote ---
Wow! I'll say! Amazing work, Roger! :ThumbsUp: :popcorn:
Kim
cnr6400:
:ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
Roger B:
Thank you :)
On with the new scavenge piston. It was machined to a close fit on the long axis but this is difficult to check as it tends to tilt and jam. The corners were then rounded and with a bit of hand fettling it fits. It is easiest to check using an adaptor in the bench drill as it keeps it square. The new piston is 0.05 - 0.08mm larger than the first attempt so hopefully it will seal well enough. Thermal expansion may be a problem but it is at the 'cold (inlet)' end of the engine so hopefully ok.
Next up were the air passages from the scavenge pump to the inlet ports. I hope they are not too restricting, if so I will mill them out to a slot. Finally a couple of counterbores in the piston to recess the fixing nuts.
Admiral_dk:
Nice progress - fingers crossed and hope that you end up with a working Engine :ThumbsUp: :ThumbsUp:
Per :cheers: :popcorn:
cnr6400:
:ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
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