Z1OwnersClub GB

Can anyone help? I bought this swingarm off ebay, it was missing one eccentirc-which isnt a problem as i get one made. My question is why the key way for the rear spindle- i guess its to transfer the wheel movement from left to right-making sure the wheel runs true? I thought about using the OEM rear spindle but how could i key it? I've rang Davida but it was that long ago they have no drawings or info on their old arms , so i'm a bit snookered. Does anyone know what the spindle should look like and i guess theres some sort of tool required to adjust the chain -locating in one of the 3 holes in the eccentric? The swingarm is in great nick so it seems a shame not to get it sorted. Dave

They came with a spindle with the matching keyways

so a spindle with 2 rectangular keys at opposite ends? Thats not easy to make :{

I think the spindle had nuts both ends, might be easier to use the stock spindle

I wouldn't worry about the keyways, they were, as you say, to transfer adjuster movement from one end to the other, but the huge leverage over the width of the wheel meant you needed to make sure both sides adjusted the same anyway. Just a bit of care adjusting each side small increments would do the trick. Not sure a standard spindle would be long enough given the thickness of the adjusters compared to a stock arm.

it shouldnt be too difficult for a machine shop to knock one up, the davida spindle was threaded at both ends rather than the conventional bolt type spindle which would make machining a keyway either side easier.

thanks for the advice guys , I'll make a new spindle (threadedat both ends), i'll post some pics when its done.

j.b wrote:it shouldnt be too difficult for a machine shop to knock one up, the davida spindle was threaded at both ends rather than the conventional bolt type spindle which would make machining a keyway either side easier.

That would make machining easier for sure, no big deal for any machine shop as you say. The big (only) issue with a nut at both ends is - you can't choose which nut turns when you tighten, so you can get the spindle turning through one of the nuts. You could machine a spindle threaded at both ends, so you can machine the keyeways, then weld a nut on one end. Or you could loctite one nut - then it's effectively a conventional spindle by another name.

I'm not disagreeing, just discussing.

No need to weld an end, if the keyways are in the spindle will not rotate when the eccentrics are clamped and then either nut will tighten fine.

As you have a pattern to copy - It may not be too costly to have two eccentrics made to your own design, this would allow you to use whichever bolt you wanted.
It would certainly make life easier for aligning the wheel as you could have them machined to any width you like and your own design of adjuster machined in.

Crofty wrote:No need to weld an end, if the keyways are in the spindle will not rotate when the eccentrics are clamped and then either nut will tighten fine.

Of course it will!!!

there's maybe one option worth investigating and thats getting adjusters and spindle from another bike and machining them to fit? For example zephyr or gpz900? Maybe theres more chance of it looking OEM going this route?

I may have a set You could borrow if You need them

You could buy another one for 99p
http://www.ebay.co.uk/itm/kawasaki-Z100 ... _500wt_922

i spotted it - lets see if it goes for silly money? like the candle apple red