It wouldnt surprise me at all if most car manufacturers were doing some kind of research into it, think of the savings on tooling etc.
Sunday, June 23, 2002, 9:07:15 PM, you wrote: mk> hi, my brother just told me that bmw are suppossed to have invented that mk> crack mechanics? bmw use it on splitting the conrod caps, and also chev mk> or holden? there is a article on it in the " mem" or motor (or mechanical) mk> engineering news, its a trade magazine for auto motive businesses. mk> mark k mk> ----- Original Message ----- mk> From: "Bob" <[EMAIL PROTECTED]> mk> To: <[EMAIL PROTECTED]> mk> Sent: Sunday, June 23, 2002 1:12 PM mk> Subject: Re: nitrogen filled tires >> Heres a bit of a digression as well using physics - In this course I >> am doing we were discussing the use of crack mechanics to form things >> from metal, and apparently there was/is (?) a project going on at Ford >> to try to form brake discs using cracking, so that you just take a >> plate of metal the right thickness, give it a jolly good whack in all >> the right places, and if all goes to plan a circular crack is formed >> in the shape of a brake rotor and the job is done. I recon that would >> be impressive to see. >> >> Sunday, June 23, 2002, 1:28:35 PM, you wrote: >> >> TR> Yes. A frame full of helium would have more mass than a frame under >> TR> complete vacuum, therefore gravity would exert a larger force on the >> TR> helium cos of one of Newton's laws, Force = mass * acceleration (ie mk> even >> TR> though helium is lighter than air, it's still heavier than nothing) mk> You >> TR> can't really use vacuum filled tyres though :) >> >> TR> Aren't these digressions great? Who'd have thought there was a use mk> for >> TR> high school physics >> >> TR> - Tom >> >> TR> PS Maybe one of the other reasons why nitrogen is used in some forms mk> of >> TR> motorsport is that it's inert, incase of a fire? >> >> TR> mark krawczuk wrote: >> >> >>hi, would u be better of with vacuum in the frame? >> >> >> >> mark k >> >>----- Original Message ----- >> >>From: "james wade" <[EMAIL PROTECTED]> >> >>To: <[EMAIL PROTECTED]> >> >>Sent: Sunday, June 23, 2002 12:39 AM >> >>Subject: RE: nitrogen filled tires >> >> >> >> >> >>>Ive heard of bmx racers using helium? These days those guys are weight >> >>>crazy and all, so yeah its like they want a lighter bike and all that. mk> I >> >>>even heard of a guy putting helium inside his frame (ie. inside the >> >>>tubing). talk about kooky. >> >>> >> >>>-james >> >>> >> >>>-----Original Message----- >> >>>From: [EMAIL PROTECTED] >> >>>[mailto:[EMAIL PROTECTED]] On Behalf Of mark mk> krawczuk >> >>>Sent: Saturday, 22 June 2002 8:04 PM >> >>>To: [EMAIL PROTECTED] >> >>>Subject: Re: nitrogen filled tires >> >>> >> >>> >> >>>i believe that some racing pushbikes use nitrogen in the tyres? >> >>> >> >>> mark k >> >>>----- Original Message ----- >> >>>From: "James Cox" <[EMAIL PROTECTED]> >> >>>To: <[EMAIL PROTECTED]> >> >>>Sent: Saturday, June 22, 2002 1:32 PM >> >>>Subject: RE: nitrogen filled tires >> >>> >> >>> >> >>>>Actually I think they do that to maintain a constant tyre pressure >> >>>>since nitrogen is less likely to expand with heat increases, a common >> >>>>practice >> >>>> >> >>>in >> >>> >> >>>>some forms of motorsport. If he really intended to make the tires >> >>>>lighter he should have uses helium. >> >>>> >> >>>>Jame Cox >> >>>> >> >>>> >> >>>>>No >> >>>>>I have only ever seen a bloke fill his tyres with nitrogen to make >> >>>>>them lighter, similar to bridge construction (true story) >> >>>>> >> >>>> >> >>>>_________________________________________________________________ >> >>>>Send and receive Hotmail on your mobile device: http://mobile.msn.com >> >>>> >> >>>> >> >>>--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]/ >> >>>--------------------------------------------------------------------- >> >>> >> >>> >> >> >> >> >> >> >> >> >> >> -- >> Best regards, >> Bob mailto:[EMAIL PROTECTED] >> >> -- Best regards, Bob mailto:[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]/ ---------------------------------------------------------------------
