worn bearing cause low oil pressure?
in [Technical]
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From: Steve W. on 8 Jun 2010 22:57 Noddy wrote: > "Don Stauffer" <stauffer(a)usfamily.net> wrote in message > news:4c0e4ae9$0$16050$815e3792(a)news.qwest.net... > >> True. But some engines in 1910 may have used older designs. Some had >> individual oil cups at each bearing surface, and these were open- oil was >> wasted and not returned with a pump. > > It doesn't have to be a pressurised system for it to be a "closed" system. > > Most car engine lubrication systems have been "closed" since the year dot, > and it'd actually be difficult to find one that wasn't. For example, the > Model T Ford, which first appeared in 1908 and was the most popular car in > the world in it's day, used cups on the bottom of the connecting rods to > "scoop" oil to lubricate the rod bearings as the rods revolved around and > dipped into the oil in the pan. This oil would then eventually be flung out > from between the bearing and crank journal and fall back into the pan for > the whole process to be repeated. > > On the other hand, some types of machinery use "open" lubrication systems, > or "total loss oiling systems" as they're known, whereby lubricating oil is > held in a reservoir and runs through the system by gravity, and falls out > the bottom as waste. Harley Davidson still uses this system...! > > Such systems work fine on stationary equipment where it can be collected in > a drip tray, but is largely impractical on moving cars. > > -- > Regards, > Noddy. > > >
From: Brad on 8 Jun 2010 23:05 "jim" <"sjedgingN0Sp"@m(a)mwt,net> wrote in message news:7YWdndYaV727Z5PRnZ2dnUVZ_gSdnZ2d(a)bright.net... : : : Noddy wrote: : > : > "Don Stauffer" <stauffer(a)usfamily.net> wrote in message : > news:4c0e4ae9$0$16050$815e3792(a)news.qwest.net... : > : > > True. But some engines in 1910 may have used older designs. Some had : > > individual oil cups at each bearing surface, and these were open- oil was : > > wasted and not returned with a pump. : > : > It doesn't have to be a pressurised system for it to be a "closed" system. : > : > Most car engine lubrication systems have been "closed" since the year dot, : > and it'd actually be difficult to find one that wasn't. For example, the : > Model T Ford, which first appeared in 1908 and was the most popular car in : > the world in it's day, used cups on the bottom of the connecting rods to : > "scoop" oil to lubricate the rod bearings as the rods revolved around and : > dipped into the oil in the pan. This oil would then eventually be flung out : > from between the bearing and crank journal and fall back into the pan for : > the whole process to be repeated. : > : > On the other hand, some types of machinery use "open" lubrication systems, : > or "total loss oiling systems" as they're known, whereby lubricating oil is : > held in a reservoir and runs through the system by gravity, and falls out : > the bottom as waste. : > : > Such systems work fine on stationary equipment where it can be collected in : > a drip tray, but is largely impractical on moving cars. : : Well it wasn't entirely impractical. The oil was dirt cheap and dripping : it out onto the roadway helped keep the dust down. : : -jim : : : > : > -- : > Regards, : > Noddy. I had wondered what system they used on the magna. Now I know. "total loss oiling systems" -- Brad Leyden 6� 43.5816' S 146� 59.3097' E WGS84 To mail spam is really hot but please reply to thread so all may benefit (or laugh at my mistakes) > >
From: Noddy on 9 Jun 2010 00:38 "jim" <"sjedgingN0Sp"@m(a)mwt,net> wrote in message news:7YWdndYaV727Z5PRnZ2dnUVZ_gSdnZ2d(a)bright.net... > Well it wasn't entirely impractical. The oil was dirt cheap and dripping > it out onto the roadway helped keep the dust down. Many engines leaked a lot of oil in the old days,. but that wasn't an intentional function of the lubrication system. -- Regards, Noddy.
From: Noddy on 9 Jun 2010 00:39 "Steve W." <csr684(a)NOTyahoo.com> wrote in message news:humvuv$dvt$1(a)speranza.aioe.org... > Harley Davidson still uses this system...! As do/did most things made in England :) -- Regards, Noddy.
From: jonz on 9 Jun 2010 02:59
On 6/9/2010 2:38 PM, Noddy wrote: > "jim"<"sjedgingN0Sp"@m(a)mwt,net> wrote in message > news:7YWdndYaV727Z5PRnZ2dnUVZ_gSdnZ2d(a)bright.net... > >> Well it wasn't entirely impractical. The oil was dirt cheap and dripping >> it out onto the roadway helped keep the dust down. > > Many engines leaked a lot of oil in the old days,. but that wasn't an > intentional function of the lubrication system. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ you mighta missed the invisible smiley.....................:) > > -- > Regards, > Noddy. > > -- jonz "Usenet is like a herd of performing elephants with diarrhea - massive, difficult to redirect, awe-inspiring, entertaining, and a source of mind - boggling amounts of excrement when you least expect it." - Gene Spafford,1992 |