Rear Axle

[maxzer1500]

The solid part of the slider face inwards. Are Vals and anutz's washers new and still to achieve the dished shape, are they yamaha washers or just washers?

[Paul]

To Harry


The sprocket carrier bearing and drive side rear wheel bearing collapsed on my bike last year.... the bike had done around 78,000 at that point.


I still wonder whether over-tightening the nut many times was the cause..... they could have simply worn out of course.


In any event I wouldn't over-tighten the rear axle nut. 

[anutz]

i second that, the fact the washer is bent to me anyway means it has been overtightened....



regardless- make sure its sound and you have no doubts....its not worth any risk with that component...it is after all keeping the rear wheel where is should be  :lol


if it was me i would get a new axel and washer as well as the nut etc...

[darrsi]

Yep you've got a bit of plastic deformation there. Not to worry mines the same albeit not as bad as yours. The nut head's nicely rounded and a bit rusty too, might be time to replace the axle. You can't complain- she's getting on a bit in years.  :lol  Like red98 I also do it by feel.

"...she's getting on in years.  :lol  Like red98..."


Bit harsh....... :rollin

[darrsi]

My guess is that at some stage someone without a torque wrench has either used an extension bar, stood on the ratchet or hammered the nut home.
There's not much you can do about it now, and it's not like you can tighten it any more into the wheel.
The swingarm is obviously a tad concaved, but as long as you don't go past the torque setting ever again it 'should' be fine.
That washer is spreading the load over the swingarm, so even though it's a little bent it should still align okay.

[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  un

[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????  :b  as long as the nut on the other end had plenty of thread that would be ok?

[fazersharp]

2 washers????  :b  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!!


https://www.youtube.com/watch?v=dL11ZIUa5jU

[fazersharp]

[quote author=fazersharp link=topic=18060.msg209759#msg209759 date=1441878517]
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.
[/quote]
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  :lol

[darrsi]

[quote author=darrsi link=topic=18060.msg209768#msg209768 date=1441880719]
[quote author=fazersharp link=topic=18060.msg209759#msg209759 date=1441878517]
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.
[/quote]
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.
[/quote]


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.  :pokefun

[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