Is the Engine Offset?

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jaydee75

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I've been designing/making a puck-style headsteady for the past 2 days for my MK3. At final fitment today, I finally noticed something. Silly me assumed that everything would be symetrical around the center headsteady mount bolt. But now I find out that my engine is offsset about 5/8" to the left side. Bummer, is this normal, or is my engine tilted?
Thanks,
Jaydee
 
Yes the engine is slightly offset. There's a really good technical article in the December Roadholder, where an NOC member described his method for ensuring proper alignment of the engine in its mounts.

The gist of the article is to set the rear isolastic first, making sure the mount isn't twisted in the frame, then set the front and finally set the head steady.

I plan to work this tomorrow myself.
 
The first time I noticed the offset after an isolastics rebuild I was upset, blaming myself for incorrect assembly.But it's really apparent when you look downwards from above the main backbone tube.
 
Well, that's good news and bad news. I'm glad I don't have to move my engine, but I'll have to modify my headsteady a little.
I had never noticed the offset before, I see it now. I knew that there was an offset concerning the swingarm, sprocket, etc but I never knew the entire engine was off, I thought it was just the bottom end/drive.
Thanks, never assume anything with a Norton.
Jaydee
 
It should only be about 1/8". At least that's what mine is and I've seen that number bantered around. Engine to the drive side of the frame as I remember. If you have an old head steady you can measure it.

Is the Engine Offset?


Dave
69S
 
jaydee75 said:
But now I find out that my engine is offsset about 5/8" to the left side. Bummer, is this normal, or is my engine tilted?

5/8" is considerably more than it should be. 1/8"- 3/16" is usual.
 
The ones i've checked in 750's were 3/16" to ~3/8" shifted and so was the rear tire in the frame, though most say they don't see rear tire offset with engine as I some others have. More effective than factory type steady are the rod links but they ain't Norton.
 
As I understand a "puck" type head steady would be the norvil, Old Britts or PR type. ludwig also made a much simpler version. I still have his pictures and plan if anyone wants it. It was posted on britbike a long time ago. I think he used about 1/8" offset, but actually welded it together on the bike.

Dave
69S
 
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