Dam - there are some intelligent people on this list. Andrew I have no idea what you just tried to explain, but I do understand the basic concept. It's good to know that we have people on this list who can actually "figure out" the engineering aspects of the cars we love - good work mate!
Mark. ----- Original Message ----- From: "Andrew Greenbury" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, May 03, 2002 11:49 AM Subject: RE: question > Hi Bob, > > Because of the strut suspension on the front, the "effective" spring > rate at the wheels (or wheel rate) is roughly the poundage of the > springs. But because the springs are inboard on the rear, their > influence at the wheels is reduced, so stiffer springs are required > on the rear to have the same effective rate at the wheels. Terry > says this spring to corner (wheel) ratio is roughly .26 > > I may be wrong but I think he gets this from: > Kw=Ks*(IR)^2 > where Kw = effective rate at the wheels (wheel rate) > Ks = spring rate > IR = installation ratio, or motion ratio = y/x where y = the resulting > spring compression from a wheel deflection x > > ie the spring to corner ratio is a measure of the spring position to > the wheels. Terry is saying IR^2 =.26, because for a given > deflection at the wheel, the 1600 rear springs compress roughly > half that amount?? > > Im open to corrections, and sorry for the backwards explanation! > Andrew > > > What is the spring to corner ratio a measure of? > > > > > Ben, > > > > > > It depends on the car i.e. IRS etc? On a 1600 most of the good > > handling dirt > > > versions have slightly softer springs in the rear. When you look at > > the > > > poundage rates on a 1600 allow for the spring to corner ratio on the > > rears > > > which as around .26:1 and on the front with stock struts the rate is > > 1:1. > > > i.e. 200# front springs are the same as ~800# rear springs. On a > > 1600 RC a > > > good starting rate is 175# front and 600# rear. > > > > > > regards > > > Terry > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED]]On Behalf Of Ben > > > Sent: Friday, 3 May 2002 12:05 PM > > > To: [EMAIL PROTECTED] > > > Subject: question > > > > > > > > > bit of a strange question. my brother has sent me his RC car to > > rebuild > > > for him. im just setting up all the suspension at the moment. just > > > wondering, with a normal car setup, are the rear springs stiffer > > than the > > > front, or is it the other way round?? > > > > > > > > --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/[email protected]/ > > > > > --------------------------------------------------------------------- > > > > > > > > --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/[email protected]/ > > > > > --------------------------------------------------------------------- > > > > > --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/[email protected]/ ---------------------------------------------------------------------
