As nick said, it is not a problem with the balancing of individual components within the engine, it is a problem with the basic design. Here is a good website that should answer all: http://www.fortunecity.com/silverstone/lancia/58/technical_school/engine/smo oth1.htm
zac ----- Original Message ----- From: Daniel Kroehn <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, November 14, 2001 9:21 AM Subject: Re: V-6 or 4cyl? > It hard to get your mind around this shit, I just had a three hour exam on > balancing and the like at uni yesterday. Its not static balancing like when > you get the pistons, rods, crank, flywheel combo balanced, its all about the > dynamic balancing where froces from the piston firing create forces and > moments which lead to imbalances inside the engine. Can someone tell me why > the secondary forces in a 6 completly cancel out as I'm not 100% clear on > why, I guess I'm picturing it as a four only with two more cylinders(hence > primary force cancelation). > > Daniel Kroehn > Datrats, quality Datsun performance parts > www.Datrats.com.au > > ----- Original Message ----- > From: <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, November 14, 2001 8:20 AM > Subject: Re: V-6 or 4cyl? > > > > Even if your engine is built by Swiss watchmakers with no expense spared, > you cannot escape the unbalance caused by the engine configuration. > > But of course if the engine has been manufactured to sloppy tolerances > then it will be much worse than an engine built by our Swiss mates. > > Nick > > > > > > From: "mark krawczuk" <[EMAIL PROTECTED]> > > > Subject: Re: V-6 or 4cyl? > > > Date: 13/11/2001 21:39:44 > > > To: <[EMAIL PROTECTED]> > > > > > > hi, so what if their un balanced, anybody doing up a high performance > > > engine always gets the engine full ballanced........................ > > > > > > > > > > > > > > > > > > mark k > > > > > > ----- Original Message ----- > > > From: <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Tuesday, November 13, 2001 2:30 PM > > > Subject: RE: V-6 or 4cyl? > > > > > > > > > > Beautiful... :) > > > > > > > > -----Original Message----- > > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > > > > Sent: Tuesday, 13 November 2001 13:15 > > > > To: [EMAIL PROTECTED] > > > > Subject: Re: V-6 or 4cyl? > > > > > > > > > > > > The theory behind engine configuration is about balance and packaging > > > > > > > > A 'V' engine (except v12) is fundamentally unbalanced. i.e they shake > and > > > > vibrate because all the rotating and reciprocating components are not > > > fully > > > > balanced. > > > > V engines are compact, this is their advantage. > > > > > > > > An in-line four cylinder also unbalanced - but you can add two balance > > > > shafts to compensate > > > > > > > > straight 6 engines are fully balanced for most harmonics, that is why > BMW > > > > still use them when a v-6 would be lighter, cheaper, and more compact. > > > > > > > > Flat 'boxer' engines are fundamentally balanced and use a very short, > and > > > > therefore stiff, crankshaft. > > > > This is why Subaru and alfa-sud engines are so smooth and responsive > > > > compared with inline fours. > > > > > > > > Straight 8's are fully balanced but the crankshaft is long and not > > > > torsionally stiff and you'd need a long engine bay to fit it all in > > > > > > > > PS just because some engines are smoother than others it doesn't mean > that > > > > they can't go just hard > > > > > > > > Nick > > > > > > > > > > > so can you explain why? > > > > > > > > > > > > Drag cars are v-8's because noone makes straight 8's... > > > > > > > > > > > > If your theory is true why aren't all motors Vees? > > > > > > What about the boxers? > > > > > > > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > > > From: James Marmont [mailto:[EMAIL PROTECTED]] > > > > > > Sent: Tuesday, 13 November 2001 12:08 > > > > > > To: '[EMAIL PROTECTED]' > > > > > > Subject: RE: V-6 or 4cyl? > > > > > > > > > > > > > > > > > > no way!!!!!! Thats why all top fuel drags are "V"s > > > > > > > > > > > > -----Original Message----- > > > > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] > > > > > > Sent: Tuesday, 13 November 2001 12:42 PM > > > > > > To: [EMAIL PROTECTED] > > > > > > Subject: RE: V-6 or 4cyl? > > > > > > > > > > > > > > > > > > that's just for space reasons I thought... > > > > > > > > > > > > > > > > > > -----Original Message----- > > > > > > From: James Marmont [mailto:[EMAIL PROTECTED]] > > > > > > Sent: Tuesday, 13 November 2001 11:20 > > > > > > To: '[EMAIL PROTECTED]' > > > > > > Subject: RE: V-6 or 4cyl? > > > > > > > > > > > > > > > > > > the "v" says it all > > > > > > > > > > > > -----Original Message----- > > > > > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] > > > > > > Sent: Tuesday, 13 November 2001 11:32 AM > > > > > > To: [EMAIL PROTECTED] > > > > > > Subject: V-6 or 4cyl? > > > > > > > > > > > > > > > > > > Hey All, > > > > > > > > > > > > Does anyone know whether it is the number of cylinders or the > capacity > > > > of an > > > > > > engine that determines it's torque? > > > > > > > > > > > > That is would a 2l V6 have more torque that a 2l 4 cyl?? > > > > > > > > > > > > Iggy (dreaming again) Sandejas > > > > > > Sydney NSW > > > > > > Datsun 1600 FJ20t > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This message was sent through MyMail http://www.mymail.com.au > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This message was sent through MyMail http://www.mymail.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/[email protected]/ ---------------------------------------------------------------------
