Mailing List flyrotary@lancaironline.net Message #54241
From: Thomas Giddings <tom@midwestaviation.net>
Subject: Re: [FlyRotary] Marcotte PSRU vs 550HP Turbo/20B
Date: Sun, 13 Mar 2011 15:41:19 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
I guess the big question is if not Marcotte then what options are left for the 450-550 HP level? Geared Drives is to Big and heavy and also has a conservative HP recommendation. 
Tom Giddings
VP Avionics Sales
MIDWEST AVIONICS
200 Hardy Roberts Dr
PO Box 219
West Paducah,KY 42086
877-904 9966
Cell; 727 858-1772
FAX:270 744 3466
tom@midwestaviation.net


On Mar 13, 2011, at 3:15 PM, Kelly Troyer wrote:

Thomas,
        What HP rating is Marcotte claiming for his PSRU ?...............From the experience of a few users
on this group and others using product have reported it seems to have a checkered operational and
maintenance history..............John of this group (13B/Marcotte in Tailwind) reported a problem he had
to resolve not long ago..............John jump in here and give Thomas your experience and if you think
this PSRU will stand up to a Turbo/20B of about 550+ HP..................I personally would have severe
reservations about the Marcotte at that power level..............FWIW
 
 

Kelly Troyer
"DYKE DELTA JD2" (Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo




From: Thomas Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, March 13, 2011 1:37:10 PM
Subject: [FlyRotary] Re: Crankcase ventilation

Does anyone have any experience using a 2.40 gear reduction on the 20B? I am going to use the Marcotte PSRU only because he has a much higher  HP Rating and it is only offered in the 2.40 ratio in the configuration I am using. However I notice everyone uses the 2.85 more commonly. Is there a specific reason why this would be better for the 20B?. I would appreciate any input any of you might have to offer.

Kind Regards
Tom 

 

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