Mailing List lml@lancaironline.net Message #20865
From: Kirk Hammersmith <kirk@direct2avionics.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Prop on the Super ES
Date: Sun, 05 Oct 2003 17:50:43 -0400
To: <lml@lancaironline.net>
>>Could you elaborate on what you mean by saying the MT performed best?
 
I will refer you to Tim Ong at Lancair to get the performance numbers.  Generally, the MT w/ simitar blades had the best take-off performance, climb-performance and the same cruise speeds as the Hartzell.  The ACI wouldn't develop full RPM until after liftoff, even after adjustments were made.  I won't try to remember what the numbers were and give you inaccurate info.  Please contact Tim.

>>Any insights into how much more maintenance the MT requires would be helpful.
 
I'm referring to nicks and blade maintenance.  MT's composite blades don't hold up as well as Hartzell's aluminum after you put some time on it.

>>I confess to having been scared away from the Hartzell because of reports on this list about the nose-heaviness of the Super ES.  I guess I'm wondering how likely it is that putting 28lbs worth of batteries on the bulkhead >>behind the baggage compartment will be enough to overcome the nose-heaviness that has been reported.  In your experience with the factory Super ES, was there a CG issue when Hartzell was on the nose?  If so, what >>was done about it?
 
I thought the same thing.  I initially planned for a TSIO-550 in my ES, but have since decided on an IO-550 w/ some treatment from Lycon.  I've flown an ES w/ the TSIO up front and all the "stuff" in back - it was a wonderful flyer.  Ed Rosiak in CA has this setup.  The TSIO-550 install had a 4-blade MT on it.  I've also flown some hours on an ES w/ an IO-550 and Hartzell on the front.  It felt nose heavier than Lancair's ES (MT on the front) but not a huge difference. 
 
Kirk Hammersmith

 
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