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Bruce RussellMon Apr-10-06 08:40 AM
Member since Mar 18th 2009
1 posts
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"Front Isolastic Mount"


  

          

Am trying to figure out why front isolastic mount is offset to one side. All measurements tell me that the centre line of the mount should be in line with the centre line of the engine ie, not the crank case faces and in turn the whole lot should be in line with the centre line of the frame. The three mounts I have are all the same. I have owned my Commando for 23 years now and it has always veered to the left when I take my hands off the bars. (I know, don't take my hands off the bars)
Am I missing something obvious?

  

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geo46erMon Apr-10-06 02:33 PM
Member since Mar 18th 2009
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#1. "RE: Front Isolastic Mount"
In response to Reply # 0


  

          

Hi Bruce,
Sorry can't comment on why the front mount is offset. But, my 74 Commando also has had a slight veer to the left (actually the bars want to go right which makes the bike go left). I initially tried careful alignment with strings and laser levels to no avail, I even tried intentionally misaligning the rear wheel just to see if it made any difference, it didn't. Last winter I had it on the rack and strung plumb lines from the ceiling down past the rims. By doing this I found that the wheels and frame each were in a different vertical plane. By installiing a tie-rod headsteady (homemade and a real beauty) I was able to pull/push the rear wheel into vertical alignment with the frame, this helped but the front wheel is still slightly out (maybe its one of those Italian frames?). The frame looks perfectly straight and undamaged, go figuere???
Anyway, I recently read somewhere that there was a tech article that suggested the problem of left veer can be helped by swapping the forks side for side (IE now the disk and calipher are on the left side). I checked through the Tech Digest but didn't happen to see it. Does anybody know where that article came from or had any experience doing so?

just wondering,
GB

G.B.

  

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L.A.B.Mon Apr-10-06 06:05 PM
Member since Mar 18th 2009
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#2. "RE: Front Isolastic Mount"
In response to Reply # 1


  

          

>Does anybody know where
>that article came from or had any experience doing so?

This is mentioned in the NOC service notes (and elsewhere) and is (I believe?) part of the reason that the 850 Mk3 disc moved to the L/H side.

I own a Mk3 and it steers straight ahead 'hands off'.

  

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