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The crank centrifugal slinger sure was not thought up by BMW. Old time Triumph for sure and probably the similar BSA and Norton had a similar idea. The Triumph dates back to like 1937.
<DIV>Same basic idea. Oil is pumped inside the centrifugal and the debris is thrown to the outside,the "clean" oil then flows back away from centrifugal to come out to lube the rod bearings.</DIV>
<DIV>On most roller/ball bearing engines the mains are lubed by splash.</DIV>
<DIV>It was discovered a while ago that ball bearings need a "pessimum" amount of oil. This is opposite of optimum. A fully flooded ball bearing will over heat due to the oil being "in the way" and one without oil will fail as well. This is why a 2 stroke lives just fine with "oily fuel" as lube.</DIV>
</DIV>Originally Posted by APE Jay
<DIV>They did all the tricks. </DIV>
<DIV>The crank is as light as one of our lightened GSXR1000s with the counterbalancer gear removed.
<DIV>That is a nice crank . . .</DIV>
<DIV>Red, *<(:{)-</DIV>
Aluminum gas tanks help with weight reduction...
Just joined Dragbike and saw this thread, sorry for a late reply. The BMW isn't the lightest 1000, theHonda is. September 2010Super Streetbike magazine Speed King article. HondaCBR1000RR 442# wet - SuzukiGSX-R1000 448# wet - BMW S1000RR 461# wet -Kawasaki ZX-10R 462# wet -Yamaha R1 477# wet ! Weight isn't where they beat the other bikes it's horsepower.
Actually reducing weight will make them last longer the more weight slinging around in a motor the more stress it put's on everything. The more weight you're pushing down the track or road the more stress it puts on the engine and whole drivetrain. Reducing weight is also the easiest way to make more power. It's the most common methods used in racing to improve longevity and performance.
What I've seen with these BMWs are the ONLY ones running the great #s belong to Brock. Now thats great to have the fast ones but when no one outside his bikes are really doing anything it made me not buy them. The tried and true Busa has parts ready to buy , try buying a swingarm see how long it takes, clutch is the weak link if you do make yours run so rather then be a trailblazer and waste ca$h on figuring this all out, I'll let someone else do that and stick with the Busa that does in stock form weighs way to much but you can lose 58 lbs real quick and buy parts all day long that exist not promises that probably can't be kept. This redusing of weight has never to this point has not has had a down side as in bearing failure , clutch basket problems , thin walls on block etc. now if this bike proves to not have these challenges then great but like I said before the only fast ones in my opinion are owned by Brock and he does make his run but where are the rest at ?Edited by: 2bking1320
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<DIV>.</DIV>
<DIV>Welcome aboard Warren! Wish I had me one of them fast street bikes.</DIV>
Thanks Tim, yea I wish I had one too, I guess I'll have to stick to the old Z1 for now..
<DIV>.</DIV>
<DIV>Welcome aboard Warren! Wish I had me one of them fast street bikes.</DIV>
BMW did it right with this one . . .
That liter bike moves .
Red, *<(:{)-
Last edited by Red,; 02-18-2012 at 09:30 AM.
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