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- From: mchaffee@ux4.cso.uiuc.edu (Rockville)
- Subject: Re: Closed vs. Open Ratio Transmissions
- References: <BxAz47.8oq@mentor.cc.purdue.edu>
- Message-ID: <BxB91w.3wG@news.cso.uiuc.edu>
- Sender: usenet@news.cso.uiuc.edu (Net Noise owner)
- Organization: University of Illinois at Urbana
- Date: Fri, 6 Nov 1992 20:03:29 GMT
- Keywords: What is the difference?
- Lines: 35
-
- mshar@mentor.cc.purdue.edu (Mike Mshar) writes:
-
-
- >Very simple question.
-
- >What is the difference between an open ratio manual transmission and a
- >closed ratio manual transmission??
-
- That sounds like the same thing as a wide-ratio and close-ratio transmission.
- I could be wrong here, but here's the definition anyway:
-
- wide (open) ratio - short 1st gear, tall 5th (or 4th or 6th) gear, wider gaps
- between gears. Generally most appropriate for normal city, highway,
- etc. driving. The advantage of the wide-ratio 'box is that for all
- types of driving, it works well. You can accelerate quickly from a
- stop, but still cruise at lower RPM's on the highway. The downside
- is your acceleration through the gears will not be as quick as the
- close-ratio gears will allow.
-
- close (closed) ratio - tall 1st gear, short 4th/5th/6th gear, narrow gaps
- between gears. A close-ratio 'box is most often seen on racing cars
- where the majority of the driving will be at one known speed. The
- advantage of having the ratios close together is that for a given
- (not too large) speed range, you always have a very-well-suited gear
- to use. The downside is that outside of that speed range, your flex-
- ibility suffers.
-
- I could be wrong as to whether open- and closed-ratio mean the same thing as
- wide- and close-ratio. If so, somebody please correct me (I'm sure you will :)
-
- --
- Michael T. Chaffee |****COLORADO BOYCOTTER******| ______
- mchaffee@ux4.cso.uiuc.edu | Professional Slapthologist | \ / HATE
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