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Old 15th Sep 2018, 04:46
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Peter3127
 
Join Date: Feb 2010
Location: 'Stralia
Age: 58
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R44 Raven I priming system

Brains Trust,

A mate has a Raven 1 with the cylinder priming system (priming pump in the back, affixed to frame).

A couple of questions:

- I have not seen reference to this system in the R44 POH available online - in Systems Description, or Supplements. Am I being thick? (It is in the Cadet POH, but this is a Raven 1).
- Would the failure of one of the cylinder priming lines cause a loss of compression in that cylinder? Or do they have check valves in lines?
- And why only 4 cylinders primed?

My personal view is that it would be rarely used, and if failure of the system could cause degraded engine performance then I would take it out. Thoughts?

Pete

p.s. keep sending pics for calendar.



Last edited by Peter3127; 15th Sep 2018 at 06:01. Reason: Added question.
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