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Old 11-03-2012, 12:03 PM   #3545
Studly Adventurer
Joined: Oct 2004
Location: Merced, CA
Oddometer: 808
Originally Posted by markjenn View Post
I've always wondered why BMW hasn't tried eliminating the offset (and presumably the rocking couple vibration) by using a forked conrod on one side with bearings on either side of the other side's bearings so that the two cylinders could be aligned.

- Mark
sort of a not quite knife and fork? I'm not even remotely an engineer, but either you'd have a really big fork to make way for bearings, or you have no bearings and one of the conrods is supported by webbing only on both sides?

I imagine the big fork that allows bearings would make for a heavy conrod to deal with the bending of that conrod, and the small fork would have a heavy crankshaft so the webbing is beefy enough to support all that load?
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