Re: Compression Ratio's Yet Again

[David Costello]

I was working it out on paper then ran it through Desktop Dyno 2000 to double check it but with the - changed to a + before the TDC in the 'chamber cc' part of the formula it works sweet now   Dave ----- Original Message ----- From: E Smith To: [EMAIL PROTECTED] Sent: Friday, June 28, 2002 8:34 AM Subject: RE: Compression Ratio's Yet Again What program are you using?   Cheers Feral Errol [EMAIL PROTECTED] http://www.datrats.com.au/   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of David Costello Sent: Friday, 28 June 2002 5:44 AM To: OzDat Mailing List Subject: Compression Ratio's Yet Again   Guys I'm having trouble getting my brain around something to do with calculating compression ratio's.   I know the formula I'm using is correct, I've tried using figures for motors I allready know the compression ratio of and it's been spot on every time.   the thing that's got me stumped is if you increase the piston height value, the final compression ratio decreases.  I'm having trouble understanding how that works, shouldn't it increase compression since it's bringing the piston closer to deck?   I've tried using 2 compression ratio calculators as well, and exactly the same thing happens. The compression ratio calculator doesn't have a "piston height" option, but it does have "piston below deck" field, and if you bring the piston closer to the deck then exactly the same thing happens....compression ratio DECREASES   this has got me stumped :( maybe I should stop trying using mathematical formulae at ungodly hours of the morning :) hehe   Dave --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------