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Old 06-05-2015, 04:35 PM
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MJD
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Tonight I ran the MDS with a slightly older Profi F2A pipe with pressure tap, Hayes 3oz tank, CF bench prop. I expected to have to fiddle but it fired up immediately, needled easily - lots more pressure from this pipe - and staged easily. I had more needle to go but stopped at 30,500 rpm. What a sweet sound. The new and repaired rod seems to be holding up fine. Engine was not over hot and feels great after cooldown.

Needle behavior was smooth and predictable, the pipe pressure did a great job adjusting the fuel flow in step with rpm, no frantic needle cranking. This however is not as hyperactively timed an engine as more modern F2A engines, so I may yet see why pipe pressure seemed to be out of favor with the speed junkies I spoke to.

Might be time to finish the 24" SWR delta.

Last edited by MJD; 06-05-2015 at 04:41 PM.