Frame back from framebuilders with wrong rear spacing
Re: Frame back from framebuilders with wrong rear spacing
As the tubing is apparently Cod settable and the cracked chain stay was replaced I can see no reason at all why you should not reset them.
The amount of bending is very minor and steel is not exactly aluminium in its level of fatigue tolerance.
You do need what are known as egg cups,these are used to ensure that the dropouts end up reasonably parallel.
My dropout spreader is simply a piece of threaded rod,buyable from DIY stores and four bolts and flat washers.Use carefully and gradually and keep the outer bolts reasonably tight,expand by about one turn on each side sequentially.
Ideally leave very marginally tight and then check that the dropouts are parallel and correct.otherwise you may have axle problems,they split but do not bend.
My egg cups are older than most people on this forum and so am I,you can deduce therefore that this system is tried and tested.
All rear hubs should be 135,unless they are even wider.130s are a silly pointy headed fashion victim racer idea.
R
The amount of bending is very minor and steel is not exactly aluminium in its level of fatigue tolerance.
You do need what are known as egg cups,these are used to ensure that the dropouts end up reasonably parallel.
My dropout spreader is simply a piece of threaded rod,buyable from DIY stores and four bolts and flat washers.Use carefully and gradually and keep the outer bolts reasonably tight,expand by about one turn on each side sequentially.
Ideally leave very marginally tight and then check that the dropouts are parallel and correct.otherwise you may have axle problems,they split but do not bend.
My egg cups are older than most people on this forum and so am I,you can deduce therefore that this system is tried and tested.
All rear hubs should be 135,unless they are even wider.130s are a silly pointy headed fashion victim racer idea.
R
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Re: Frame back from framebuilders with wrong rear spacing
robinlh wrote:the tubing is apparently Cod settable and the cracked chain stay was replaced
I dunno, it still seems fishy to me.
Re: Frame back from framebuilders with wrong rear spacing
stewartpratt wrote:robinlh wrote:the tubing is apparently Cod settable and the cracked chain stay was replaced
I dunno, it still seems fishy to me.
Good catch!
Re: Frame back from framebuilders with wrong rear spacing
130s are a silly pointy headed fashion victim racer idea.
What? Even if they date back to when the racers were using 126mm?
- recordacefromnew
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Re: Frame back from framebuilders with wrong rear spacing
Samuel D wrote:stewartpratt wrote:robinlh wrote:the tubing is apparently Cod settable and the cracked chain stay was replaced
I dunno, it still seems fishy to me.
Good catch!
Y'all think the framebuilder's explanation is a red herring?
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Re: Frame back from framebuilders with wrong rear spacing
I think they just have bigger fish to fry
Re: Frame back from framebuilders with wrong rear spacing
we knew you'd bite eventually... just an idea I'm floating...
cheers
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
Re: Frame back from framebuilders with wrong rear spacing
I'm floundering. I don't get all the jokes.
“In some ways, it is easier to be a dissident, for then one is without responsibility.”
― Nelson Mandela, Long Walk to Freedom
― Nelson Mandela, Long Walk to Freedom
Re: Frame back from framebuilders with wrong rear spacing
Go round to their plaice and get them to put it in whiting or you could end up squids out of pocket.
Re: Frame back from framebuilders with wrong rear spacing
There must be a better plaice for all this carping on.
Re: Frame back from framebuilders with wrong rear spacing
recordacefromnew wrote:
Y'all think the framebuilder's explanation is a red herring?
Yeah but don't tell him Pike....
'Give me my bike, a bit of sunshine - and a stop-off for a lunchtime pint - and I'm a happy man.' - Reg Baker
Re: Frame back from framebuilders with wrong rear spacing
It is the amount of dish in the wheel that matters.
He who taught me the rudiments of wheel building over half a century ago just could not really accept dishing,although,like me,he had to accept it.
A dishless seven speed wheel should be possible,but such hardware as is available is ether expensive or of poor quality.
Were I building a truly expedition ear wheel,a forty spoke 140/145mm tandem hub might be the way to go,but then three the rim problem..........
But to build a ten speed rear wheel up on a 130mm hub when you can just as easily use a 135 is just technical illiteracy.
R
He who taught me the rudiments of wheel building over half a century ago just could not really accept dishing,although,like me,he had to accept it.
A dishless seven speed wheel should be possible,but such hardware as is available is ether expensive or of poor quality.
Were I building a truly expedition ear wheel,a forty spoke 140/145mm tandem hub might be the way to go,but then three the rim problem..........
But to build a ten speed rear wheel up on a 130mm hub when you can just as easily use a 135 is just technical illiteracy.
R
Re: Frame back from framebuilders with wrong rear spacing
robinlh wrote:It is the amount of dish in the wheel that matters.
He who taught me the rudiments of wheel building over half a century ago just could not really accept dishing,although,like me,he had to accept it.
A dishless seven speed wheel should be possible,but such hardware as is available is ether expensive or of poor quality.
Were I building a truly expedition ear wheel,a forty spoke 140/145mm tandem hub might be the way to go,but then three the rim problem..........
But to build a ten speed rear wheel up on a 130mm hub when you can just as easily use a 135 is just technical illiteracy.
R
Has anyone ever had a rear wheel fail because of the dish or is it just a theoretical problem i.e. it would be stronger if it wasn't dished but it works fine as it is.
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Re: Frame back from framebuilders with wrong rear spacing
TonyR wrote:Has anyone ever had a rear wheel fail because of the dish or is it just a theoretical problem i.e. it would be stronger if it wasn't dished but it works fine as it is.
Well, any time you have a fatigue failure of an NDS spoke or a stress fracture of a DS spoke it would be fair to argue that with less dish the failure would have been less likely to occur.
Not quite sure how all this really relates to the OP's issue, though.
Re: Frame back from framebuilders with wrong rear spacing
TonyR wrote:
Has anyone ever had a rear wheel fail because of the dish or is it just a theoretical problem...
I've seen many wheel failures that were directly attributable to the dish on the wheel. Not 'just theoretical'.
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~