Hi Jarek
Maybe now that you have blocked the air leaks around the throttle shaft
the engine is running a little rich? That would certainly reduce your
peak rpm.
I have found getting the mixture correct on each side to be a bit
tricky. I adjusted the mixture on mine a bit at a time, watching the
degree of "blackness" on the spark plugs, plus the CHT behaviour. But I
was taking it for a flight then adjusting when back on the ground.
Maybe others know of a way to get the mixture setting correct on the ground?
Kindest regards
Martyn
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On 26/12/19 9:37 AM, Jarek Steliga wrote:
Hello everyone,
I have replaced the throttle shafts and the throttle plates.
Fortunately it looks like no rebushing will be necessary. The engine
became far more stable now and responds precisely to throttle control
inputs. Clearly the badly worn out throttle shaft was (at least
partly) where the shoe pinched. However, strangely enough, the engine
will not rev up beyond static 2500 RPM. See the attached video. I am
faced with yet another conundrum.
max static RPM 2500.3gp
<https://drive.google.com/file/d/17rdy2gc83H4FCpMXqlTOlBn-KBV8kVJA/view?usp=drive_web>
Also the engine will not respond to throttle control beyond ca 4 cm
before the max power position.
I am not sure if it's safe for me to attempt a take off as before the
throttle repair, the engine had reved up to static 2600 / 2700.
I am looking forward to your thoughts.
Best regards
Jarek
