nose up test
When you do the nose up test,and it runs fine when you raise the nose but it dies when you point the nose down ,what does that mean?
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RE: nose up test
A: You flooded it
B: You uncovered the clunk |
RE: nose up test
thanks!
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RE: nose up test
The plane im flying is a omp profile with a 55ax installed on it ,tonight when i was flying i did a few loops and a few rolls and then it just didnt sound right so i landed and could see alot of bubbles in my fuel line! What causes this and where do i need to start to fix it?
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RE: nose up test
Fuel is foaming or air leak in fuel line.
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RE: nose up test
fuel line air leak might also be inside the tank. Best solution is to replumb the tank with new lines inside and out it is only about a dollars worth of tubing. make sure you have foam under the tank but not compressed hard and rigid
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RE: nose up test
Hey glow experts out there. What is the goal of doing a full throttle nose up test at the starting bench? What are you looking (or hearing) for? How long do ya hold it up?
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RE: nose up test
You are listening for the engine leaning out. With most standard fuel set ups, when you hold the nose up the engine will lean out. What you want is the max safe lean condition with the nose up and the engine running good in straight and level position. So if your plane is known to lean out a bunch, you really want to set the mixture with the nose up.
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RE: nose up test
ORIGINAL: SeamusG Hey glow experts out there. What is the goal of doing a full throttle nose up test at the starting bench? What are you looking (or hearing) for? How long do ya hold it up? |
RE: nose up test
Gotcha - a friend (2nd plane newbie) at the field held his 4Star40 w/ OS 55 AX up at full throttle (13K rpm). He held it up for 5 - 10 seconds. No change in rpm. Following the posts I'm going to recommend that he richen the high speed needle a click or 2 then retest.
Thx for the input. |
RE: nose up test
Also, when the airplane's prop 'unloads' while flying the mixture will lean out a little. You definitely want the mixture slightly rich in level attitude.
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