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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rphroy!link.ph.gmr.com!vbreault
- From: vbreault@rinhp750.gmr.com (Val Breault)
- Newsgroups: rec.autos.tech
- Subject: Re: 100 000 miles at redline
- Message-ID: <VBREAULT.92Dec23095520@rinhp750.gmr.com>
- Date: 23 Dec 92 14:55:20 GMT
- References: <1h2vs0INN4m8@access.usask.ca> <acuff.724956949@CAMIS>
- <1h8kujINNd6c@uniwa.uwa.edu.au>
- Sender: news@rphroy.ph.gmr.com
- Organization: General Motors Research Labs
- Lines: 75
- Nntp-Posting-Host: rinhp750.gmr.com
- In-reply-to: scott@psy.uwa.oz.au's message of 23 Dec 92 03:03:47 GMT
-
-
- >choy@skorpio.usask.ca (I am a terminator.) writes:
-
- >>A BMW ad claims their car (or was it just the engine?) was driven for
- >>at redline 100 000 miles straight. The engine showed no signs of wear.
- >>How does this compare to other cars? How does this compare to airliners?
-
- Hmmm.... Let's examine this...
-
- If the test was done without a transmission then the only loads upon
- the engine would be the pumping losses (very low if a diesel), the
- power needed to operate the pumps and internal friction. Even at
- red line, this is considerably less than the power needed to shove
- a car through the air at freeway speeds. If the test was actually
- done without an external load then I'd say it was (1) much more gentle
- than 100,000 miles on the highway and (2) totally meaningless.
-
- By the way... what do you suppose "no signs of wear" means? I doubt that
- it means that the parts were indistinguishable from new parts off the
- shelf, but that's the impression that they want to convey.
-
- Anecdote:
-
- A long LONG time ago a friend of mine was about to scrap out his 1959
- Plymouth station wagon and thought he's send it off with a real BANG.
- He started the engine (V8 318), tossed a cinder block on the accelerator
- pedal and ran like his pants were on fire.
-
- The engine screamed through its burned out exhaust pipes as if someone
- had opened the gates of hell. We were sure that the tired old beater
- would throw at least a couple of rods right through the side of the
- block. We stood inside the service bay, watching the car through
- a barred, reinforced window.
-
- We waited.
-
- And waited.
-
- And... after 15 minutes of patient watching... we took a lunch break.
-
- We washed up... ate... chatted with folks... and finally agreed to
- halt that incredible racket.... 45 minutes after starting it.
-
- The engine was QUITE overheated and siezed.
-
- But the story doesn't end there.
-
- He push started the car a few days later and drove it to the wrecking
- yard where he received $25 for the car ($25 was the going rate for cars
- that could be driven to the yard).
-
- -----------------
-
- Now, I'm a skeptic and a scientist and I wouldn't give that story
- much consideration if I'd heard it from someone else and I don't expect
- any of you to do so either. It certainly has nothing to do with
- carefully conducted scientific experiments and almost nothing to
- do with the topic of this thread.
-
- But it *IS* a true story... I was there.
-
- -----------------
-
- Merry Christmas, Happy New Year, Happy Hanukkah, Happy Holidays...
-
- See you all in '93
- --
- -val-
-
- Val Breault - GM Research - vbreault@gmr.com - N8OEF \ /|
- Instrumentation dept., 30500 Mound Rd., Warren, MI 48090-9055 \ / |
- The opinions expressed by the author do not necessarily reflect \ /__|
- those of GMR or those of the General Motors Corporation. \/ |___
-
-
-