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Author Topic: Center of mass  (Read 1001 times)

Offline Air4Life

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Center of mass
« on: August 07, 2011, 01:36:12 PM »
Where would the center of mass lie on a riderless r65?
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12

Offline Bob_Roller

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Re: Center of mass
« Reply #1 on: August 07, 2011, 01:50:43 PM »
I would say right around where the center stand is, if the center stand isn't too worn, the bike feels pretty much 'weightless' when it's on it .
'81 R65
'82 R65 LS
'84 R65 LS
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Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline nhmaf

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Re: Center of mass
« Reply #2 on: August 07, 2011, 07:22:13 PM »
I would estimate that it is just slightly higher, just about at the crankshaft, and probably  near the clutch assembly as far as fore-aft positioning goes.
Airhead #12178 ? BMWMOA #123173 ?BMWRA #33525 ?GSBMWR #563 ?1982 BMW R65LS ?1978 BMW R100/7 1998 Kawasaki Concours

Offline Air4Life

  • Lives in Foothills of Mt. Olympus
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  • Posts: 206
  • With each added mile I enjoy it more.
Re: Center of mass
« Reply #3 on: August 07, 2011, 07:49:11 PM »
thanks Bob Roller and Nhmaf:  When I formulated the question I should have added the fore/aft detail.  

I'm interested in knowing so that I can mount the wheel chock in the enclosed trailer properly.  I want to ensure within reason that I have the suggested 60/40 % ratio over its axle.
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12

Offline Air4Life

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 206
  • With each added mile I enjoy it more.
Re: Center of mass
« Reply #4 on: February 05, 2012, 06:23:48 PM »
So, you want to know where the center of mass is?  Answer: Start Praying.
sold:
1983 33.8 E. Oil & Trans ?
Batt 10/06/2011
33.2 Head 35.5 (I0.005) ?(E0.009) 35.5
RearT 35.5 Spline 7/12 &
T.O.Bearing
C.U. Paste 5/12