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Engine/trans is somewhere hitting the frame at low rpm

   
Old Apr 20, 2021 | 07:42 PM
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Default Engine/trans is somewhere hitting the frame at low rpm
So my 2011 FXDC with a front Predator Motor Mount slightly hits the frame somewhere and basicly that has allways been there when the bike is at low rpm, nothing at a constant repeat but here and there every couple of seconds but when as soon as I raise the rpms by driving away or just pulling the throttle it stops hitting. At the begining I thought the rear mount was bad and sometime latter I changed it up and it kept doing it. Then I did a re-install of both mounts and it helped but I can still fell it sometimes. My question is, has this ever happend to anyone else? and anyone knows where it could be hitting the frame?
 
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Old Apr 20, 2021 | 08:17 PM
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Yes, happened to me when I changed my rear mount to a “oem" aftermarket brand. Rear engine hitting the rubber on the mount on a small bump. Switched back to the old mount and the problem disappeared
 
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Old Apr 20, 2021 | 08:18 PM
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Originally Posted by El Chiguete
So my 2011 FXDC with a front Predator Motor Mount slightly hits the frame somewhere and basicly that has allways been there when the bike is at low rpm, nothing at a constant repeat but here and there every couple of seconds but when as soon as I raise the rpms by driving away or just pulling the throttle it stops hitting. At the begining I thought the rear mount was bad and sometime latter I changed it up and it kept doing it. Then I did a re-install of both mounts and it helped but I can still fell it sometimes. My question is, has this ever happend to anyone else? and anyone knows where it could be hitting the frame?
It can only be off in 3 places. Start with a full alignment. Then go from there.
 
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Old Apr 20, 2021 | 08:32 PM
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Did you noticed anythin in particular of that other mount to cause that? Different dimensions?
 
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Old Apr 20, 2021 | 10:01 PM
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Originally Posted by El Chiguete
Did you noticed anythin in particular of that other mount to cause that? Different dimensions?
it had a beefier rubber
 
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Old Apr 20, 2021 | 10:57 PM
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Check the front head pipe, the exhaust bracket, and make sure your exhaust isnt touching your mids (if equipped). Those are the most common touch points.

Did you follow the install procedure for the mounts by the service manual?
 
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