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Metmachex Swing Arm Help

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Fred the Zed
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Metmachex Swing Arm Help

#1 PostAuthor: Fred the Zed » Sun Sep 15, 2013 10:04 am

I have a Metmachex swing arm lounging around in my garage doing not a lot. I bought it for my Z1R but have changed plans and I'm fitting a Dresda unit instead.

While the original arm was off my Z1R yesterday, I offered the Metmachex arm up and found the pivot was about 5mm too narrow to fit the Z1R. I've measured it at 226mm (roughly). There's no marking on the Metmachex arm to indicate what it might fit.

When I bought it, I was told it was for a Z650 / Z900 / Z1000, so assumed (now there's a word at the centre of most *uck-ups) it would fit.

From the photos, its clearly for a twin shock bike, has mounts for the brake torque arm on both the upper and lower side of the RHS, which may indicate its for a bike that has either a drum or disc rear brake. Any ideas?

[img][img]http://i1273.photobucket.com/albums/y413/FredtheZed/SwingArm1_zps21e9208c.jpg[/img]

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[img][img]http://i1273.photobucket.com/albums/y413/FredtheZed/SwingArm2_zpsd55193ff.jpg[/img]

Any ideas??

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#2 PostAuthor: Taffus » Sun Sep 15, 2013 10:46 am

they usually stamp the model fitment on the swing arm pivot tube
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#3 PostAuthor: Charlie » Sun Sep 15, 2013 3:29 pm

On the Z650 Metmachex, both spindles measure 315mm long from the base of the head to the end of the threads.

The pivot spindle is 16mm and the axle spindle is 17mm, which is 3mm smaller than on the Z900/1000 axle spindle.

I have the spindles in my garage from my Z650 MM arm but not the swingarm itself so I cannot measure the dimensions of that. As said, the model fitment on Metmachex swingers is stamped on the front edge of the swingarm pivot.

Mine says Z650/750.

Is that one gonna be for sale ?
Why do I persist in debating with idiots ? I really should know better :)
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#4 PostAuthor: KeithZ1R » Sun Sep 15, 2013 3:44 pm

should it have end caps ?
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#5 PostAuthor: oldtimer » Sun Sep 15, 2013 3:58 pm

Taffus wrote:they usually stamp the model fitment on the swing arm pivot tube
Mine was clearly stamped on a flat area of the pivot tube Z1000, it also had end caps which I had to modify to fit on my Z900.
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#6 PostAuthor: Fred the Zed » Sun Sep 15, 2013 5:07 pm

Charlie wrote:On the Z650 Metmachex, both spindles measure 315mm long from the base of the head to the end of the threads.

The pivot spindle is 16mm and the axle spindle is 17mm, which is 3mm smaller than on the Z900/1000 axle spindle.

I have the spindles in my garage from my Z650 MM arm but not the swingarm itself so I cannot measure the dimensions of that. As said, the model fitment on Metmachex swingers is stamped on the front edge of the swingarm pivot.

Mine says Z650/750.

Is that one gonna be for sale ?


Hi
Yep its for sale, but it would be nice to be 100% sure what it was made for. On the plus side, a couple of spacers and it could clearly fit the Z1000 / Z1R. PM me if you are interested in purchasing it. It's going on Ebay on Thursday evening if it doesn't sell beforehand.

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#7 PostAuthor: Fred the Zed » Sun Sep 15, 2013 5:08 pm

KeithZ1R wrote:should it have end caps ?


Yep, the pivot tube is machined so that the caps clip on.....

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#8 PostAuthor: garyd » Sun Sep 15, 2013 5:26 pm

Possibly a H****...I think they were generally slightly narrower at the pivot point.
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#9 PostAuthor: Is Vic There » Mon Sep 16, 2013 5:04 am

PM sent
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#10 PostAuthor: KeithZ1R » Mon Sep 16, 2013 10:33 am

Fred the Zed wrote:
KeithZ1R wrote:should it have end caps ?


Yep, the pivot tube is machined so that the caps clip on.....

Fred


So that will be where the 5mm went then :D
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Further measurements

#11 PostAuthor: Fred the Zed » Tue Sep 17, 2013 5:14 pm

The arms measurements are:

Pivot width - 226mm

Space between insides of the rear chain adjusters - 226mm

Space between shock mountings - 260mm

Distance between centre of Pivot and centre of chain adjusters - 505mm


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#12 PostAuthor: Is Vic There » Tue Sep 17, 2013 8:07 pm

Just being very lazy as I can't measure my bike for over a week or so!
With the great wealth of experience on here, can anyone tell me if this would fit a Z1000R 1983 year?

Thanks in advance.
Z1000R ELR, Z1100R ELR, GPz900R A1, GPz750 Turbo, Norton F1, Harris Mag 2, Harris Mag 5, Yamaha YZR750SP, Triumph Steve McQueen, Suzuki RGV250 Sheene Rep, Suzuki RG500 Walter Wolf, Suzuki RG250 Walter Wolf, Aprilia RS250, Yamaha YL1, RG500. H**** NS400.
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#13 PostAuthor: Is Vic There » Wed Sep 18, 2013 9:09 am

So does anyone know if this will fit on a Z1000R?
Fingers crossed it will!
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#14 PostAuthor: Fred the Zed » Wed Sep 18, 2013 6:24 pm

Oh, and the rear wheel axle / spindle is 20mm diameter.

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#15 PostAuthor: Is Vic There » Wed Sep 18, 2013 8:14 pm

So can anyone have an informed guess if this would fit?
As you know to get it down here is going to cost a fortune, just want to make sure it will fit, if it needs minor modifications that's fine!

Your thoughts Gents?
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