Crank runout question
Road Warrior
Joined: Jul 2011
Posts: 1,934
Likes: 308
From: coastal sc
just an fyi. I put an after market front motor mount on mine and it had more vibration after the change than before. I sent it back and got the glide pro and bike has considerably less vibration now. U have to follow the glide pro directions and tighten it according to instructions. If I ever replace it again, it will be another glide pro.
Club Member
Joined: Sep 2010
Posts: 1,677
Likes: 434
just an fyi. I put an after market front motor mount on mine and it had more vibration after the change than before. I sent it back and got the glide pro and bike has considerably less vibration now. U have to follow the glide pro directions and tighten it according to instructions. If I ever replace it again, it will be another glide pro.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,077
Likes: 11,100
From: San Diego, CA
Since you felt a sudden vibration, then found a bad engine mount... just because you replaced that bad engine mount, it doesn't mean the vibration MAY NOT still be engine mount related... You may want consider another engine mount before tearing apart your engine to try to solve the problem..
For your information....
The #16207-79B front motor mounts used on baggers & FXRs, is considered to be superior to the later, updated part(s) that replaced it. They are now up to revision "D", #16207-79D, for HD replacements for that mount... The newer mounts are supposedly much stiffer, allowing for more felt vibration..
What new mount did you use...?? A new HD mount, or an aftermarket vendor...??
On another HD tech forum I frequently read, a member found a front engine mount replacement, Made in America, that is supposed to be the same as the original "B" mount in size & stiffness, made by Barry Controls... it's their Bonded Tube Mount, 500 series... #507-1NS... it sells for about $18... I think he said the shipping cost is high.. but he got the mount, the corresponding snubbing washer, and shipping.... for $38...
You can find it on this page... scroll down until you see the #507-1NS..
https://novibration.com/products/bon...ts-500-series/
He called Barry Controls 1-800 number, but got the run around ... he eventually spoke with John, at Novibration.com. (Distributor for Barry Controls, now owned by Hutchinson Aerospace Industries). John is in engineering, and he was very familiar with the application for the early touring bikes.
John said the #507-1NS matches the original part used by HD (the equivalent to the "B" mount) and the #507-3NS would be substantially stiffer and prone to allow more vibration transfer..
I mention the #507-3NS mount because there is a Barry Controls mount being offered on eBay, as a replacement for the Harley "D" mount... It is believed to be the stiffer 3 code, versus the 1 code which is the equivalent to the original "B" code mount..
Whether you try one of these, or another mount from an aftermarket vendor, the Harley "D" mount is reportedly stiff and passes on vibrations... you may find a "softer" mount could end your vibration issue...
Disclaimer.... I do not have a touring or FXR bike that uses this front mount... I have, however, read about issues with this mount. I've read some of the HD replacements, as well as some aftermarket mounts, are not the same as the good "B" mount... None of this is first hand knowledge on my part...
I offer this 2nd hand info, as food for thought for those who may have a problematic front engine mount of this part # series...
OP.... good luck with your diagnosis and repair...
Last edited by hattitude; Jan 3, 2021 at 02:16 PM.
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