Subject: 13B Possible belt PSRU
From: Rotary Engine
Date: 3/30/2006, 1:11 AM
To: AAme


     As further evidence that this does work, take a look at
   motorcycles.  These are some of the
   highest power per cubic inch engines in the world and the
   carburetors are coupled directly to the
   intake ports on the heads.

Paul, and Hennie,
The Motorcycles using the carbs almost bolted to the head, (actually
rubber mounted in circular rings) are all designed for max power at what
we would consider surealistic RPM. Even the street middleweight
performance bikes are redlining at near (or beyond) 14,000! The super
short intake is the correct length for those RPM's. The LeMans engine
still has one of the highest outputs for a NA engines and the short
length on the super trick variable length manifold is about 18".  Proper
tuning depends on your intended max RPM. If you are willing to lose the
benifit of tuned intake you can make the manifold as short as you wish,
but HP will suffer and BSFC even more so.
Bill Jepson


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