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Tracker Extraordinaire rescue
- Thread starter member43148
- Start date
Think I'll add a little blurb about that in the Top End thread.
didit
Thought that sounded familiar, so I had to look. Yup, yours was the same....
And then, RobinC piped in and his was the same...
Looks to be a lot more common than I remembered. And all on the left side.
It’s easy to speculate that the oil pipe design and perhaps print dimensions were for the early XS head before that left tapper cover went to a larger square shape?
Pretty sure that's what happened.
Away from project currently but thinking about a puzzle to me.
On the timing / advance rod there are locating pins on each end.
The points cam orients on a pin.
The advance weight disc orients on a pin as well.
The mechanical weight plate is also secured in a position oriented to the camshaft by a locating pin.
But what actually orients the thru rod securely ?
I see I can spin the thru rod as it is not tightened by the 10mm nuts yet.
So what locks the points cam / the thru rod in a correct orientation?
On the timing / advance rod there are locating pins on each end.
The points cam orients on a pin.
The advance weight disc orients on a pin as well.
The mechanical weight plate is also secured in a position oriented to the camshaft by a locating pin.
But what actually orients the thru rod securely ?
I see I can spin the thru rod as it is not tightened by the 10mm nuts yet.
So what locks the points cam / the thru rod in a correct orientation?
The little nubs on the flyweights.
okay so that would change my assembly “plan” a little.That shown 10mm nut would be tightened after the weights and springs are in position?
The advance rod would say “float” into its position with the weights actually confirming the rod orientation is accurate ?
Then tighten the nut ..
Edit~ I see how it’s the weights / tabs which are the orienting components now.
Thanks Jim, in my mind I was looking for a more secure component such as a key way or such but ya. ..
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Been a while since I messed with one, but I don't think you tighten the nut using the weights to pull against. As I recall, those nubs can bend fairly easy.
I'm thinkin' you hold the nuts on both sides (points cam and advance) of the rod and tighten against each other. Like I said though, it's been a while. Maybe someone who's got a better (more recent) memory can chime it here...
I'm thinkin' you hold the nuts on both sides (points cam and advance) of the rod and tighten against each other. Like I said though, it's been a while. Maybe someone who's got a better (more recent) memory can chime it here...
To be clear the disk the bob weights fit into is locked to the shaft by a pin, you can see the notch the pin engages just after 12 o'clock here.
That shown 10mm nut would be tightened after the weights and springs are in position?
The advance rod would say “float” into its position with the weights actually confirming the rod orientation is accurate ?
Then tighten the nut ..
Edit~ I see how it’s the weights / tabs which are the orienting components now.
Thanks Jim, in my mind I was looking for a more secure component such as a key way or such but ya. ..
The nut just keeps it in place. You can tighten the nuts on the ends against each other, don't go gonzo, a few have busted the shaft with oogy doogies. Since the pins can stick out of either side of the rod, DIY assembly with the timing 180 degrees out is VERY popular.
Got it, wasn’t remembering that the points cam “floats” and was stuck in a rigid mindset there..lol
I am still looking ahead at the mechanical advance plate mount and open to suggestions about tightening that strange large nut. It just looks tempting to tap it tight with brass?
I am still looking ahead at the mechanical advance plate mount and open to suggestions about tightening that strange large nut. It just looks tempting to tap it tight with brass?
That's how I do it. I seem to recall the nut has a specific side it goes on... though I couldn't tell you which side.... or even if I'm just pullin' stuff out my ass.
You are correct! Tho it is tempting to install the nut with that ring in cuz it looks like it has an alignment purpose, better not !
It fits proper with that ring rim out
It fits proper with that ring rim out
The side play of the points cam / advancer thru rod seems excessive. Im poking feeler gauges on the advancer side and getting .016+ or more.
After scrounging around all the garage stuff, I have no shim. Hoping Ace Hardware , where I still find plenty of stuff , has a “shim” to be found tomorrow
After scrounging around all the garage stuff, I have no shim. Hoping Ace Hardware , where I still find plenty of stuff , has a “shim” to be found tomorrow
Ace didn’t come thru this time so some creativity resulted in what I think is great.
An old used copper sealing washer from somewhere XS became a custom modified points cam side shim.
I sanded it down to about .011” and it’s copper so what can go wrong?
Now the thru rod free play feels much more appropriate to me. Still some thousandths there, wiggles.
An old used copper sealing washer from somewhere XS became a custom modified points cam side shim.
I sanded it down to about .011” and it’s copper so what can go wrong?
Now the thru rod free play feels much more appropriate to me. Still some thousandths there, wiggles.
Attachments
A guy can get through any of these tasks eventually with XS650.com tech..
Kick starter shaft secure and apparently correct. New gear and good spring of original design and placement.
the “Tracker Project” came to me in a very disassembled state.
the “Clutch Box” was a dirty one with a few mystery items in it including this shown unusual 6mm screw.
It’s dark in color and has that strong shank. It must a special purpose somewhere? Anybody recognize this screw ?
the “Clutch Box” was a dirty one with a few mystery items in it including this shown unusual 6mm screw.
It’s dark in color and has that strong shank. It must a special purpose somewhere? Anybody recognize this screw ?
