Drawing a complete blank on chainguard mount

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Diamondjet

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1973 850 Roadster. Left side (primary side) completely dissasembled with swing arm, shocks and battery box installed. Parts manual not suficient for me to re-attach chainguard to bike and I believe it should go back on early in the process. Does it use the left hand z-bar on the front attach point and something else on the back??. Thanks.
 
From memory I thought there were brackets on the swinging arm? can't get to mine at present to have a look,
Dave.
 
There is a small "loop" of flat steel just behind the swingarm pivot that takes the front through-bolt.

There is provision for the rear mount at the lower left shock mount bolt.

There is one other bolt that is for rigidity of the assembly, no provision for attachment, but uses a loose sleeve inside the chainguard.
 
There is one other bolt that is for rigidity of the assembly
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Ah yes grandpaul, that's the spacer that the metal tube for the chain oiler is welded to (on Interstate anyway), not sure if they all have it, and I remember now the rear end of chainguard attaches to lower s/abs bolt as you say.
 
Pardon my ignorance but what is a s/abs? I seem to be missing something on rear attachment although thanks to you I see the front lug is for the front chainguard mounting. Maybe I've swapped rear shocks left for right and missed it.
 
what is a s/abs? Shock absorber, the lower shock absorber bolthead on the chainguard side goes into the slot on the chainguard before the nut on the shock absorber bolt is tightened. Best to use nyloc nuts on the shock absorber bolts but on the chainguard side the nylon bit does not have enought threads the grip on as the chainguard slot takes up too much of the bolt length.
 
Pardon my ignorance but what is a s/abs?
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Shock absorber/ damper unit. The original chainguard had a square 'u' shaped bracket welded to it which fitted under the shock absorber lower mounting nut, maybe your chainguard doesn't have this bracket?
The featherbed models, (Dominator etc) had 2 brackets welded to the swinging arm, that's what I was thinking of earlier, maybe your chainguard was meant for that type of fixing, they just had 2 bolts through the chainguard and through those brackets,
Dave.
 
Thanks for everyones help. As soon as I could I trial fitted the chainguard to the swingarm using the swingarm bracket for the front and the lower shock mount bolt for the aft end of the chainguard. After figuring out that I had fed the bolt from the outboard to inboard instead of the other way around I realized I could use the bolt head in the chainguard bracket. The picture in the parts catalog shows the bolts going in the proper way but at this point in the reconstruction process I didn't think it made any difference (I see now it does).

Now for figuring out how the two lower holes in the forward part of the rear fender attach and what they attach to. The first thought I had was that the bolts that go thru the triangular horn bracket should be REAL long so they would also capture the fender. This seems to press the fender up against the chainguard and one of the oil line hose clamps.

I'll figure it out and with the help of the contributors of this forum it's all coming together. Great feeling and now that I think I see the end in sight I'm thinking about maybe doing another old Brit bike.
 
Diamondjet said:
Thanks for everyones help. As soon as I could I trial fitted the chainguard to the swingarm using the swingarm bracket for the front and the lower shock mount bolt for the aft end of the chainguard. After figuring out that I had fed the bolt from the outboard to inboard instead of the other way around I realized I could use the bolt head in the chainguard bracket. The picture in the parts catalog shows the bolts going in the proper way but at this point in the reconstruction process I didn't think it made any difference (I see now it does).

Now for figuring out how the two lower holes in the forward part of the rear fender attach and what they attach to. The first thought I had was that the bolts that go thru the triangular horn bracket should be REAL long so they would also capture the fender. This seems to press the fender up against the chainguard and one of the oil line hose clamps.

I'll figure it out and with the help of the contributors of this forum it's all coming together. Great feeling and now that I think I see the end in sight I'm thinking about maybe doing another old Brit bike.
Click to expand...

Please, whatever you do, take a picture at this point for the next idiot (me) who needs to mount the chainggaurd!
 
the extra holes in the front of the rear fender are weight savers to improve the power to weight ratio
 
Hi. Glad to supply a couple of photos of the chainguard. Hope they come thru. You have all been a big help.

Drawing a complete blank on chainguard mount
Drawing a complete blank on chainguard mount

Drawing a complete blank on chainguard mount
 
Be sure to use the spacer mounted midway for the oiler. It keeps things squared up. Leave it out and you're apt to see your chain nick the rear of the chaingaued. Been there.....done that....
 
That explains the nick at the back of this chainguard. Fortunately I have an oiler to use or make a spacer to take its place. Thanks for the heads up.
 
I think the bolt for the rear shock mount has a very thin head to fit within the notched opening in the chainguard. The one in the picture looks right because there is a gap between it and the chaingard. I've seen some Nortons where a normal bolt is used and then the chainguard is off kilter and rubs.

Russ
 
Yeah, and you ought to see the special "spanner" to holt that thin bolt head inside the cofines of the chainguard mounting tab!
 
Thanks all. The changing of the bolt heads from one side of the lower bolt mount to the other made all the difference by providing an attach point for the aft positioning of the chainguard and the tab on the upper forward portion of the swingarm provided the other mounting point.
 
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