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Author Topic: BMW vertical twin balanced like a boxer  (Read 879 times)

Offline Barry

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BMW vertical twin balanced like a boxer
« on: August 18, 2010, 02:42:58 PM »
The BMW F800 twin seems to be a rather ordinary design by usual BMW standards until you look beneath the surface and discover the engine is balanced just like a boxer albeit turned vertical.....

http://www.ashonbikes.com/bmw_engine_balancer
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Barry Cheshire, England 79 R45

Offline montmil

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Re: BMW vertical twin balanced like a boxer
« Reply #1 on: August 18, 2010, 03:34:38 PM »
Quote
...just like a boxer albeit turned vertical...

Man! I'm gonna need a honking big skid plate. Or maybe go the car route and mount some chrome 22-inch rims... [smiley=idea2.gif]
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Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Offline Motu

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Re: BMW vertical twin balanced like a boxer
« Reply #2 on: August 19, 2010, 02:09:37 AM »
Mitsubishi holds the patent for balance shafts? Maybe,but in their engines they are used to balance secondary vibration and run at twice engine speed.Balance shafts in singles and vertical twins are for primary balance.
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