Mailing List lml@lancaironline.net Message #61693
From: Paul Miller <pjdmiller@gmail.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: Excessive down hydraulic pressure
Date: Wed, 18 Apr 2012 13:01:28 -0400
To: <lml@lancaironline.net>
Adam, great video.  I hate to add this comment but I believe you have an old geared starter, perhaps an iskra or other geared starter?  Maybe batteries were not charged too.  But, the starter is spinning and the prop is going backwards for a short duration during start in your video.  In my non-expert opinion you are a candidate for a new starter adapter.  That spinning is the spring slipping on the adapter shaft.  It will get worse with time.   If it's under warranty consider getting it swapped and putting in a better starter.  I have great starts with the old tcm boat anchor and another legacy now has the newer skytek with a rebuilt starter adapter and that is working well.   I'll send you a video of how it looks after the change.  Let me know if you need more data.

Paul
Legacy 
Spruce Creek fl



 
The attached JPG file shows the up and down hydraulic pressure readings throughout the flight. The x-axis is time, with the flight beginning at 20:32Z and ending at 21:12Z. You can see the gear retraction tests beginning around 20:43 and 3500' altitude. Notice that after the last test the down pressure remains around 500psi for about 90 seconds even though the gear is retracted. The up pressure fluctuates a bit then the down pressure drops to near 

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