Egged wheel, deformed casting.
Discussion
What's the best course of action? I have a triumph speed triple 2008. On fitting a new tyre and balancing the wheel I found out the wheel is cast "egged" bike hasn't been in a accident so it's a strange one. Took 60 grams on one side to balance. It's sort of deformed casting. Can it be straightend or repaired?
It could be pot hole damage, there is a guy in Stockton called Roy thersbey ? Not 100% on the spelling who can repair damaged wheels, I had a wheel fixed by him where the edge of the rim had flattened from its usual 90 degree profile and slightly egged, I was amazed that he repaired it without even cracking the paint on the wheel
http://thersbywheelrepair.co.uk/
http://thersbywheelrepair.co.uk/
Edited by orangefzr on Monday 12th March 08:46
Not saying it's impossible, but seems unlikely it would have come from the factory that way, it would have been bloody to the first person balancing the wheel.
Genuine question. Alloy wheels aren't malleable. How do you repair them without them being weak as hell afterwards?
I've bodged some alloys in the past to re-shape them. But never long term, and I'd never do it on my bike. The became brittle as anything.
Genuine question. Alloy wheels aren't malleable. How do you repair them without them being weak as hell afterwards?
I've bodged some alloys in the past to re-shape them. But never long term, and I'd never do it on my bike. The became brittle as anything.
orangefzr said:
Not sure how it is actually done, I asked theresby to show me how he straightened them but would he heck. He has his own closely guarded technique but all I can say is that the bloke knows what he is doing
I didn't ask how mine was done, the run out was huge, spinning the front wheel by hand it was clearly more than +-5mm.. No cracks or visible damage and the tyre wasn't loosing any pressure. After it was repaired I couldn't even tell where the repair was, even painted up to match and blended in.
I think my bike came to be from a main dealer like this.. unrecorded accident damaged, it had a new front end.
orangefzr said:
Not sure how it is actually done, I asked theresby to show me how he straightened them but would he heck. He has his own closely guarded technique but all I can say is that the bloke knows what he is doing
A f
king big hammer then. 
There's no way on earth I'd let someone reshape my wheels without me being supremely confident in the process. If they told me it was a secret I'd just walk, by their own admission they've something to hide. But maybe that's just me.
Perhaps bike wheels are different (and someone please jump in if I'm talking s
t) but in my own experience the first bash makes alloys brittle as hell, you can reshape it with some gentle taps and patience, but the internal crystal structure is still shattered. If you're unfortunate enough to hit another bump the whole thing just crumbles. That would obviously be bigger bumps though, superficial damage, well maybe it's fine.As I say though perhaps the process and materials are different on these wheels, and we all have our own attitudes to risk. I'd like to know more personally.
I tend to think the same way as you Prolapse - even with heat treatment they should be very brittle and a liability, yet lots of people have had theirs repaired and are trouble free.
I would guess it's because there are huge tolerances built into the strength of a wheel, far more than is necessary in everything but a really brutal accident, at which point a wheel failing has little extra effect (be it car or bike).
I would guess it's because there are huge tolerances built into the strength of a wheel, far more than is necessary in everything but a really brutal accident, at which point a wheel failing has little extra effect (be it car or bike).
Each to their own I guess, I was very sceptical about him being able to repair it and at the time I was in the motorcycle trade. He agreed that if the wheel was not fixable there would be no charge, so In my eyes there was nothing to lose, and as I said there was no damage to the original paint on the wheel whatsoever, and the reason he wouldn't show me the method used was probably because he thought that I might go into competition with him at a guess ? Roy has a huge wealth of knowledge when it comes to motorcycle's and he's a well respected guy in the classic motorcycle racing scene, I'm positive that he wouldn't screw anyone over for the sake of a few quid or to have causing an accident on his conscience
As for the op it does sound strange this bleb / egg and I think that I would investigate further, maybe compare it to another wheel or even get an opinion from a wheelright
As for the op it does sound strange this bleb / egg and I think that I would investigate further, maybe compare it to another wheel or even get an opinion from a wheelright
Nicky86 said:
It's got me baffled, the perimeter of the mounting lug holes is different 2-5mm. When spun on the bike it's very noticeable. Mybe some time in it's life it's had a fair old wack, this being the weakest part as deformed. It just very strange.
I wonder if someone has once managed to put the wheel on at a 45° out, so the location pins on the hub have been sat in the wrong place ( not in the drive holes ) and then they've started tightening it up on the piss ? Just a theory though ? Nicky86 said:
Silver part is the bit that's wonky.
Amount of weight needed to true the wheel, 70 grams!
It would be vaguely interesting to see what balance it would need without a tyre at all if you could encourage the bemused tyre fitter to waste 5 mins of his life. If it still needs 70gms I'd be suprised. It was 60gms at the top of thread btw!
Balancing is required because everything is slightly pissed - wheel, tyre (and disc as well on a normal twin sided configuration). Most of the imbalance will presumably be in the tyre but they all can add up.
Bear in mind also it can be quite hard to hold a single sided fitment wheel correctly (when trying to balance it) if you haven't got the exactly the right dia sleeve or the correct nut. If it's not quite 'centred' it would obviously have an affect.
P.S. I've had wheels straightened after I'd cartwheeled a bike to destruction (just like half the racing paddock) and I've never heard of a wheel failure during our racing but a couple of wheels every year would break during tyre fitting so I'm guessing some of them are a bit stressed (aren't we all??!).
Thanks for the reply, I fit and balance my own wheels and tyres got the cone to do single side wheels, so nice and straight. Balanced the wheel to see if it was the tyre, it took 60g. So definitely the wheel. Even with different brands it takes 60g. Currently using a cheap continental at the minute, so took a extra 10g. I fit the tyre to the wheel to heavy to light to use the minimum amount of weight.
Think it needs a new wheel, time for a upgrade to some fancy lightweight ones.
Think it needs a new wheel, time for a upgrade to some fancy lightweight ones.
Nicky86 said:
Thanks for the reply, I fit and balance my own wheels and tyres got the cone to do single side wheels, so nice and straight. Balanced the wheel to see if it was the tyre, it took 60g. So definitely the wheel. Even with different brands it takes 60g. Currently using a cheap continental at the minute, so took a extra 10g. I fit the tyre to the wheel to heavy to light to use the minimum amount of weight.
Think it needs a new wheel, time for a upgrade to some fancy lightweight ones.
Fair enough but wouldn't you be better getting hold of another good wheel and treating your bike to some fancy new performance parts and probably still have enough money left over to go on holidays for a cheeky week Think it needs a new wheel, time for a upgrade to some fancy lightweight ones.
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