home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!dtix!darwin.sura.net!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!newshost.uwo.ca!valve.heart.rri.uwo.ca!wlsmith
- From: wlsmith@valve.heart.rri.uwo.ca (Wayne Smith)
- Newsgroups: rec.autos.tech
- Subject: Re: Brakes
- Message-ID: <1992Aug31.134149.25023@julian.uwo.ca>
- Date: 31 Aug 92 13:41:49 GMT
- References: <1992Aug31.074111.14570@colorado.edu> <1992Aug31.130938.4234@mlb.semi.harris.com>
- Sender: news@julian.uwo.ca (USENET News System)
- Organization: The John P. Robarts Research Institute, London, Ontario
- Lines: 12
- Nntp-Posting-Host: valve.heart.rri.uwo.ca
-
- In article <1992Aug31.130938.4234@mlb.semi.harris.com> jws@billy.mlb.semi.harris.com (James W. Swonger) writes:
- >
- > As far as loss of braking power with altitude, if you have a vacuum booster
- >(power brakes) you will see a drop in vacuum at altitude because the ambient
- >pressure is lower. If your brakes are marginal you'll see it then. Your idle
- >vacuum may be even lower than normal due to (a) and the mixture error also
- >due to (a) can drop it even more.
-
- The effect on vacuum pressure vs altitude probably isin't linear, but
- on a trip I took once on the SkyLine drive in West Virginia, my normal
- idle vacuum at sea level was 20 inches Hg, and at 3600 ft it dropped to
- 17.5 or 18 inches Hg.
-