Mailing List flyrotary@lancaironline.net Message #28687
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Intake manifold Design with Super Charger
Date: Thu, 22 Dec 2005 12:03:06 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
A supercharger/turbocharger generally ensures that your engine will receive more air than an NA engine regardless of the intake.  However,some things to keep in mind:
 
1.  The losses encountered in an intake under NA conditions will be even higher under supercharged conditions.
2.  Unless you are running under boost all the time, at some times you would be running essentially NA. ( No experience with a supercharger, but some with cars using turbochargers).
3.  Longer intakes are generally more suited for getting more torque at lower rpms which with a supercharger is pretty much a non-issue. 
 
4.  If the intake is otherwise clean and straightforward then the difference between 12" and 8" is probably insignificant with forced induction.
 
FWIW
 
Ed A
.
 
----- Original Message -----
Sent: Thursday, December 22, 2005 11:30 AM
Subject: [FlyRotary] Intake manifold Design with Super Charger

Need a few opinions. Are intake runner lengths important (13" vs 8")  if I am running a Super Charger. I have been struggling to build a clean intake with 12-13" runners that will clear the cowl.  8" would be much simpler.
 
Thanks,
 
Bobby
 
 
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