Author Topic: Verner Engine Mount on LE Treehugger  (Read 705 times)

Offline Tom H

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Verner Engine Mount on LE Treehugger
« on: January 11, 2021, 08:50:49 AM »
Chuck in Indiana asked about the Verner engine mounts on Treehugger.

The first mount I built included "angle iron" sections bolted to the Verner mounting ears, then attached to a Lord isolator, which was attached to the mount tubing which had a "donut" looking affair on the end.  This mount was used for a while, but we found cracks in the "angle irons" attached on the engine.  The "donut" encapsulated the rubbers too much, and diminished the isolation, reducing the squish of the rubber, and may have resulted in metal to metal contact which broke the "angle irons".  I have attached a few pics showing the overall installation, the gray mount and one of the failed "angle irons".  Note, the original mount pics are called "old", the new mount pics are a number starting with "P".

The 2nd, and current mount was built using attachments at the engine which spread out to allow several bolt attachments to the engine, which did not rely on only the mounting ears, and also eliminated any rotation of the mount on the engine ears.  The Lord mounts attach between these and the thick tabs on the end of the mount tubing.

Our theory and experience suggest that the largest vibration is rotation about the crank shaft axis.  We oriented each of the Lord isolators so that the isolator bolts are tangent to a circle about the crank axis.  This allows the engine to move against the rubbers a fair amount so that contact is never made between the engine attachment and the mount tubing thick tab.  This mount has proven to be fairly effective and strong.

I have attached pics of the current mount which include the top-left engine attach, a right side view and a view of the bottom mount (the part that attaches to the engine is one piece and includes both the left and right bottom Lord isolators).

Les and I traded ideas back and forth on engine mounts, and I believe we ended up with similar configurations.  He tested several different durometers of the Lord mounts.  We used what we had, and I don't know which it is.

As many of Les' videos show, the engine does not shake too badly at low idle, shakes a bunch at a fast idle, but smooths out at higher rpms.

Hope this helps.
Tom H
Stubby, a BDE
Treehugger, LEU

Offline leshoman

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Re: Verner Engine Mount on LE Treehugger
« Reply #1 on: January 11, 2021, 10:43:31 AM »
I had problem with mounts on the 3V at first but went to a modified mount similar to Toms and have over 100 hours on mount with no problems.
When i built LE SR 7-1/2 tried a mount concept similar to what is being used on the 5V but it did no work, went to mount like on ORV and i have over 10 hours on it with no problems.
Les Homan

Offline Chuck in Indiana

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Re: Verner Engine Mount on LE Treehugger
« Reply #2 on: January 11, 2021, 02:52:30 PM »
Thanks, gentlemen..food for thought.

 

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