I'm pretty sure I won't like this

Found a message from the spanner monkeys on the answering machine
asking me to phone them back. Strangely enough, this time they didn't
leave a hint as to why.

Oh, and yesterday I inquired politely regarding the whereabouts of a
certain rear wheel that had been despatched to an engineer with a view
to getting the disk mounting flange trued.

I'm getting the impression that I will soon be able to test Simes'
theory that it's almost impossible to warp something as solid as the
hub on a Pan rear wheel.

 

Timo Geusch said:

I was pondering on this last night (I know it's sad), and I reckon it
didn't warp - what /could/ have happened (I reckon) is that there was a
bit of corrosion on the flange (as you'd expect) and instead of gently
wiping it off, their monkey has used a bastard file to clean it up, thus
leaving a flange lower than all the others...

Sounds more likely than it warping - it's not made of pine FFS...

 

Simon Atkinson was seen penning the following ode to ... whatever:

Well, should I find traces of file work on the wheel I shall apply for
permission to use that particular file on the monkey...

That's what I'm thinking as well. Of course the other potential reason
for the call could be that they wish to inform me that their engineer
has now properly screwed up the wheel...

 

Timo Geusch said:

They are now making sure that they can blame the lathe fellow for any
odd marks.

It's obviously (as it's yours) picked up on the tool and flung itself
into the next county...

 

Simon Atkinson was seen penning the following ode to ... whatever:

Given the tone of the message left on the answering machine I'm
expecting something along the lines of "It fell off the lathe,
destroyed a couple grand's worth of equipment and is now egg
shaped. But don't worry, we found the speck of dirt that was
responsible for the runout of the disk."

 

Timo Geusch said:

At least there is always a SOCitroen!

 

Alas, the mystery is solved.

There was "a lot of corrosion" on the disk mounting flange, which was
cleaned up with a wire brush, resulting in some, er, unevenness of the
mounting surface which appearantly couldn't be machine away.

In other words, I need a new friggin' wheel. Great. I bought this Pan
because the constant repairs to the Triumph were getting on me nerves
and wallet. What an utterly, utterly brilliant idea. Oi Simon, I think
we might have to have another word about that wheel of yours as I'd
rather buy a known good one from you than a supposedly good one from a
breakers...

"Glad you jumped out of the frying pan, see that fire over there?"

 

So their fix has buggered the wheel such that the disc won't fit?

Surely they should be replacing the wheel, not you?

 

Timo @ work said:

Translation:

There was a bit of dirt on the mounting flange, but Sid used a fucking
great plumbers file to clean if off. Unfortunately he got carried away
and cleaned half the wheel away.

I know mine's OK cos the flange is smeared with copperslip to stop it
corroding... Standard mod you know...

You've got my number still?

 

I'm really, *really* struggling to believe this. Removing some
corrosion on the wheel has lead to a run-out so severe that the bike
now warps disks in short order?

FFS, the general slop and movement in rear wheel alignment and fitting
is bound to give a run out of at least a millemetre (think of a chain
drive bike with the chain adjusters slightly out). The pads should
adjust to take it up, without any problem.

 

Champ said:

The only thing I can think of is that a fuckwit removed a load of metal
from one (or more) of the mounting flanges.

Bit in that situation, the wheel and disc are on the skew, but constant
- the edge of the disc wont wave in and out as it goes round. In Timo's
the disc is being deformed as it is bolted up and therefore has movement
from side to side as it turns.

 

Wouldn't a washer under the dodgy flange sort it out, then?

'swot I'd do, I reckon.

--
| ___ Salad Dodger
|/ \
_/_____\_ GL1500SEV/CBR1100XXX/KH500A8/TS250C
|_\_____/_| ..64299../..15196.../..3157./.19406
(>|_|_|<) TPPFATUICG#7 DIAABTCOD#9 YTC#4 PM#5
|__|_|__| BOTAFOT #70 BOTAFOF #09 two#11 WG*
\ |^| / IbW#0 & KotIbW# BotTOS#6 GP#4
\|^|/ ANORAK#17
'^' RBR-Visited:13 Pts: 250 Miles:1237

 

Salad Dodger said:

Old feeler gauge of the right thickness, cut to size would do it.

 

Do you agree it would have to be "a load" tho?

<fx: struggles to see the difference> From the perspective of the
brake pads, what's the difference between the whole wheel being in at
an angle, and the disk being on the wheel at an angle?

 

Champ said:

I'd have thought that it would have to be 0.5mm or more (remember that
the flange is inboard, so the effect will be magnified towards the edge
of the disc.

If the wheel is in at an angle, it's still true - the edge of the disc
or wheel may rotate at an angle to the dead-ahead of the bike, but it's
still perfectly true.

In the Timo situation the edge of the disc is wiggling left and right as
it passes through the pads, rather than the whole circumference passing
through the pads at a slight angle.

 

<screws up forehead really hard>

Oh yes, I see now

 

Champ said:

Having thought about it, I reckon I was trying to say that one ran true
to the axle and one didn't...

 

It was somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember (Timo @ work)
saying something like:

Well, either the wire brushing was brutal (in which case it's their
fault) or the corrosion was deep enough to cause the unevenness of which
you speak once it was cleaned off (not their fault).

On balance, seeing how it's yours - it's your fault.

Sorry and all that.


--

Dave

GS 850 x2 / SE 6a
SbS#6 DIAABTCOD#16 APOSTLE#6 FUB#3
FUB KotL OSOS#12? UKRMMA#19 COSOC#10
Get rid of your SOC/SOB here http://www.sparesorrepair.co.uk/

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, Simon Atkinson

" "

....


" "

....

" "

It's no good, I've had three tries at a reply and I've deleted them all.

 

Nigel Eaton said:

I knew someone would have a go at it... I'm disappointed that you
couldn't do better though.