Engine Mount Confusion
Road Master
Joined: Aug 2008
Posts: 1,246
Likes: 251
From: Belle River Ontario
Actually it doesn’t, go back and read a few of tincupchalice’s posts on the subject. The swing arm is connected to the transmission, it doesn’t touch the frame.
The only connection to the frame is the top shock mounts.
Think in in terms of sections. The frame is one section and the power train another...
The frame includes the front forks, front wheel, gas tank, rear struts & rear fender and all that is attached.
The power train would be the motor, transmission & rear swing arm and everything attached to those items including the exhaust.
The reason for the rear rubber mount, is to help the power train. If it was ridged it would be breaking transmission cases.
The reason the FXR handled so much better was that the swingarm was part of the frame, not the power train....
The only connection to the frame is the top shock mounts.
Think in in terms of sections. The frame is one section and the power train another...
The frame includes the front forks, front wheel, gas tank, rear struts & rear fender and all that is attached.
The power train would be the motor, transmission & rear swing arm and everything attached to those items including the exhaust.
The reason for the rear rubber mount, is to help the power train. If it was ridged it would be breaking transmission cases.
The reason the FXR handled so much better was that the swingarm was part of the frame, not the power train....
Thread Starter
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Road Warrior
Joined: Oct 2015
Posts: 1,333
Likes: 355
From: San Diego
Went out and looked at it again. I see that the swingarm pivot bar is only attached to the transmission and not welded to the rear downtubes. Hmmmm. So the connection to the frame at the rear of the engine is the isolator. Hmmmm.
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Outstanding HDF Member
Joined: Mar 2015
Posts: 2,840
Likes: 900
From: Philly Suburbs
And hence: Alignment... Stabilizer... etc.
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Extreme HDF Member
Joined: Jun 2014
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From: NW Ohio
Yup. Not a great performance solution. Kinda like building a house on a foundation made of gelatin. They tried to limit lateral movement with the design of the isolators but it's less than ideal.