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From: ins_aeas@jhunix.UUCP (Earle A .Sugar)
Newsgroups: net.auto
Subject: Re: Rx7 & trailers: rebuttal
Message-ID: <1524@jhunix.UUCP>
Date: Tue, 21-Jan-86 22:48:13 EST
Article-I.D.: jhunix.1524
Posted: Tue Jan 21 22:48:13 1986
Date-Received: Fri, 24-Jan-86 08:33:20 EST
References: <717@dedalus.UUCP>
Organization: The Johns Hopkins University
Lines: 38

> 
>     Both rotary engines have approximately one fourth the number of moving
> parts of your 302 V8.  MY car has never had any mechanical or engine
> failures to speak of (the one exception was a centrifugal clutch for the
> radiator fan, it froze up).  There are no valves to burn, no cam shafts
> to wear out, and the engine is so small that it actually sits BEHIND the
> front wheels.  The weight balance on the car is 51% front, 49% rear.
> Trailering just isn't that much of a problem (Airstreams excluded).
> 
>      An interesting aside:  my car has 100 bhp; my 84 Yamaha motorcycle
> has 120 bhp.  Maybe I should pull the boat with the bike...although
> stopping might be exciting.
> 
> 					Steve Holzworth
> 					mcnc!ikonas!dedalus!sch
> 						or
> 					mcnc!ikonas!dedalus!tachyon!sch
     The amount of horsepower your engine puts out has nothing to do with
what I was talking about.  The fewer horses per cubic inch of swept 
volume, the less stressed the engine is.  You may not have many of the
parts that mine has to break, but does extra load put extra strain on cam bearings?
Not really.  However, my 302 and your rotary both have bearings that take
the loads exerted on the output shaft on the engine.  Let's both tow
a 500 pound trailer for 40,000 miles and use plastigage to measure main
bearing wear.  Since your engine is putting more stress on less bearing
area, there will be more wear, assuming equivalent bearing material and
lubrication.
-- 
______________________________________________________________________________

Earle A. Sugar
Disclaimer:"I doubt anyone else here agrees with me."
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