To fit a new front cone to a prop shaft firstly
- etch the propeller serial number to the rear face.
- cut in half with a hacksaw and etch a unique serial number to both halves.
- coat in Engineers blue to ensure seating in the propeller front boss.
Explanation from PART66Online
A propeller-shaft front cone is a split cone used as a matched pair, so a new one-piece blank is first cut into two halves and both halves are marked with the same identifying number to keep them together. This ensures the matched pair stays as a set; checking seating with engineers blue is a later step, not the first action.
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shivam_sharma00 asked · 20 Apr 2012
this is wrong answer pls check CAIP for correct ans.
option 3 is correct which is coat in Engineers blue to ensure seating in the propeller front boss.
Community Comments (6)
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PART66Online
20 Apr 2012
Hello.
Can you tell please CAIP leaflet and chapter?
Can you tell please CAIP leaflet and chapter?
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obrien99
21 Apr 2012
i have just studied props and i thought the same as you that this question was incorrect. but read the question asks about FRONT cones. the application of engineering blue is the correct fro rear cone seating. in the jepperson propeller book it does mention cutting the front cone in half.
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obrien99
21 Apr 2012
if you are studying propellers i would highly recommend the jepperson propeller book
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PART66Online
21 Apr 2012
Jepperson Aircraft Propellers and Controls Page 30 refers, right, Obrien? :)
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obrien99
24 Apr 2012
Correct !
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Jordi
18 Jun 2020
so is the B answer right?If i understood correctly,we use engineers blue on the rear and the method of splitting on the front?
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