LettersFromFlyoverCountry
Well Known Member
This is an extension of the thread on getting the paperwork in for an airworthiness inspection, which morphed into an analysis of engine ground testing. Makes sense to start a new thread.
On Alex Peterson's advice -- who said "take Paul Dye's advice" -- I tried to run the engine last night to 2000 until the CHT got close to 300.
I found I could not get the engine past 1900. I have to tach indications on the GRT EIS, one off the mag, and one off the Lightspeed EI.
So, here's the thing. I've gotten this far on the project, going slow and trying to conquer the strange land of things I don't know about, but i want to be VERY careful in approaching this situation because it just doesn't seem like proper place for a "I wonder what turning this screw will do?" method and that's pretty much what I would be doing.
So, I'm looking for resources to read on the step-by-step approach to analyzing what's going on here.
I'm assuming that step #1 is to check the throttle and mixture cable attachments to be sure they're extending the arms on the servo to their full travel.
After that, though, it gets a little murkier. If you're an A&P, what would be the logical progression of steps to take here.
By way of background, this is a TMX IO-360 M1B, it's a fixed-pitch propeller from Sensenich. It's a 72FM8S9-1-85 (standard). Sensenich information says the static RPM range LIMIT is 2050 to 2250.
On Alex Peterson's advice -- who said "take Paul Dye's advice" -- I tried to run the engine last night to 2000 until the CHT got close to 300.
I found I could not get the engine past 1900. I have to tach indications on the GRT EIS, one off the mag, and one off the Lightspeed EI.
So, here's the thing. I've gotten this far on the project, going slow and trying to conquer the strange land of things I don't know about, but i want to be VERY careful in approaching this situation because it just doesn't seem like proper place for a "I wonder what turning this screw will do?" method and that's pretty much what I would be doing.
So, I'm looking for resources to read on the step-by-step approach to analyzing what's going on here.
I'm assuming that step #1 is to check the throttle and mixture cable attachments to be sure they're extending the arms on the servo to their full travel.
After that, though, it gets a little murkier. If you're an A&P, what would be the logical progression of steps to take here.
By way of background, this is a TMX IO-360 M1B, it's a fixed-pitch propeller from Sensenich. It's a 72FM8S9-1-85 (standard). Sensenich information says the static RPM range LIMIT is 2050 to 2250.