Rear Axle

[HarryHornby]

OK UPDATE


I've phoned my local stealer - a new washer is £5.50 so I've got one on order.  The axle was £45 excluding all washers and nuts (I can't justify that cost at the moment) plus mine seems straight and works fine.


So, 2 things now.  Bodge the current washer to get me to Brighton on Sunday!!!


Work out what 117Nm on my torque wrench actually is.....  but like I said, I've never had this issue before, plus I had never adjusted the chain myself since I've owned this bike.  It's had 2 rear tyres fitted by two different garages though, I'd like to think they are doing it up to the correct torque.


So I'm thinking my wrench is prob about right, I reckon the washer that was on we getting knackered from 14 years on the bike.  I reckon the one I bought from a chap on here was even more shit than the one I took off.


So moral of the story, stop being a tight cunt by paying £6 inc postage for 2 washers of unknown quality that are crap and just pay the £5.50 for a brand new one in the first place, because it's now cost me £11.50 

[darrsi]

The thing is Harry, if your swing arm is indented, which i'm pretty sure it is, then the new washer is highly likely to bend and take the same shape of it as well.
The damage to the swing arm is already done, personally i would just make sure the wheel is aligned, tighten it up correctly and forget about it.


A flat washer on an indented non flat surface WILL bend once tightened. 

[HarryHornby]

oh bollocks..... I was all happy until I read your reply!!      at least it will be a SHINY, bent washer LOL 

[darrsi]

You could try putting a narrower diameter washer underneath the new one to balance it out, but firstly it'll probably muller it eventually and secondly i doubt you'll find one in the right size needed anyway.

[fazersharp]

I dont think that  the swing arm is dented from looking at the picture and if it is I wonder if a good thick stainless steel washer would be less likely to bend

[HarryHornby]

2 washers????     as long as the nut on the other end had plenty of thread that would be ok?

[fazersharp]

2 washers????     as long as the nut on the other end had plenty of thread that would be ok?

I think there is enough at the other end but as darrsi said I think a smaller washer under would just put even more pressure and dent  the swing arm.
What about a steal box section inside the swing arm to prevent any extra denting

[darrsi]

I dont think that  the swing arm is dented from looking at the picture and if it is I wonder if a good thick stainless steel washer would be less likely to bend

Of course the swing arm is indented, there's now way you would curve a washer of that thickness on a true flat surface.

[HarryHornby]

it is dented.


was like it before I touched it!!

[fazersharp]

I dont think that  the swing arm is dented from looking at the picture and if it is I wonder if a good thick stainless steel washer would be less likely to bend

Of course the swing arm is indented, there's now way you would curve a washer of that thickness on a true flat surface.

Yep I understand all of that of course, but what I said was the picture dosen't look like the arm is dished, makes sense that it is but it dosen't look it from the picture.

[anutz]

take the axle out and get a pic 

[darrsi]

I dont think that  the swing arm is dented from looking at the picture and if it is I wonder if a good thick stainless steel washer would be less likely to bend

Of course the swing arm is indented, there's now way you would curve a washer of that thickness on a true flat surface.

Yep I understand all of that of course, but what I said was the picture dosen't look like the arm is dished, makes sense that it is but it dosen't look it from the picture.

Are you looking at the correct picture?
It clearly looks dented in Harry's picture, plus, he just said it was dented.


I reckon it's dented. 

[darrsi]

It shouldn't get any worse as long as you don't go over the torque level.
The new washer will certainly be worth putting on anyway.


There is always the strong possibility that copper grease was used and totally fucked up the torque setting by whoever did it.

[anutz]

i have had a bad time with torque wrenches and copper grease when i first started using them - now i am ok, but as Darrsi said, the use of copper grease does throw off the torques you use!


I have literally sheared off a few bolts before and had to drill them out ( successfully unlike the engine stud )

[HarryHornby]

Red, I think you've hit on something re the adjusters inside the swing arm.  Can you guys pop out and see if you can work out which picture your bike resembles most.


Pic one, this is how they are currently inside the swing arm



Pic two this shows it (the way it's installed) but outside the bike



Pic 3 - this is the adjuster put in the other way round



Pic 4 is the other way round but off the bike



Which wa round do they go?  Have they been put in wrong by the previous owner or was it right all along?


Cheers

[darrsi]

The first way 

[HarryHornby]

SWEET, thank you :-)   It was correct in first place but glad I checked.

[fazersharp]

That swing arm looks dished to me !

[HarryHornby]

That swing arm looks dished to me !

 

[red98]

Sorry harry, just found what I thought was going to be a rear axle but its a swingarm axle  ...told you I was old........
so, had a look at my 600 and my washer is dished a bit too, think its an age thingy, iam an expert at age thingys  .....your new ,new washer should sort things out   ...also took a piccie of the chain adjusters just to confirm whats already been said...

sorry to let you down, there is some good news however, whilst I was rummaging I came across  a little gem I had forgotten I had, great practical accessory for you bike....its yours matey, I'll bring it with me on sunday   

[HarryHornby]

Shit it's not a tow bar is it, Red???????


Or a SAFE!!!???? 

[red98]

NO.....................its both  ..........towbar and trailer would be good for you, fill the trailer with new washers and off yoh go, no worries 

[fazersharp]

So now I dont get how it can get dished when there is a solid adjuster behind it, there has to be a little gap so to insert the adjuster but surly not so much that you can crush the swing arm.
Could you hammer in the adjuster with a shim piece of metal between the adjuster and inside swing arm and then tighten with a new washer and flatten out the swing arm dish, take all out and add a bigger shim to prevent new dishing, would need a sacrificial adjuster as it would get a knackered thread from hammering     

[darrsi]

So now I dont get how it can get dished when there is a solid adjuster behind it, there has to be a little gap so to insert the adjuster but surly not so much that you can crush the swing arm.
Could you hammer in the adjuster with a shim piece of metal between the adjuster and inside swing arm and then tighten with a new washer and flatten out the swing arm dish, take all out and add a bigger shim to prevent new dishing, would need a sacrificial adjuster as it would get a knackered thread from hammering   

It's a steel axle bolt but aluminium swing arm that has probably been severely overtightened at some stage.
Shit happens! 

[Val]

The first way 

SWEET, thank you :-)   It was correct in first place but glad I checked.

Negative Pic 3 is the right way according to the service manual, so it was not correct in the first place hence the bend washer, the flat part of the spacer is outside and that way when you tighten the outside wall of the swingarm has more support, the inside bit is actually facing the internal spacer which has smaller surface anyway so no point to have bigger surface there IMO