chain life

[Reg Lizard]

I've actually done more than 17000km on a casette and a set of blades nad merely replaced them as I also got  a good price for new ones.

So you're saying I should rather run an ultegra chain to get higher millage?

[AndreZA]

I've actually done more than 17000km on a casette and a set of blades nad merely replaced them as I also got? a good price for new ones.

 

So you're saying I should rather run an ultegra chain to get higher millage?

 

 

 

maybe not the chain so bad but definately the casette.

[Jules]

Yep, faster-wearing titanium for twice the price all for the sake of saving 39g.

 

 

 

I'd harp on for longer about how stupid all this is, but the titanium Dura Ace cassette costs less than most steel Campy cassettes, and being a Campy rider, I better keep my mouth clamped shut.

 

 

 

Got a quote for a Veloce (105 equivalent) cassette from Solomon's yesterday - R950

[Cassie]

I've actually done more than 17000km on a casette and a set of blades nad merely replaced them as I also got  a good price for new ones.

So you're saying I should rather run an ultegra chain to get higher millage?

hey dudes...this idea is to RIDE the bikes...not to just show it off on the back of your bike racks....

[Johan Bornman]

Yes I was cranking it when it snapped so it was under heavy load

 

I without fail clean and lube entire drivetrain after just about every ride

 

Only been through 3 or 4 muddy rides and not excessive mud and not excessive distance

 

Ok so maybe might be a bit premature based on above will see how this one goes

 

Thanks for the replies and info

 

Define "snap". Did it fail by both sideplates breaking off or, did one of the pins come unstuck?

 

 

[chuck]

 

So a broken chain is no indication of end of life. 

 

 

 

 

Are you saying that the chain is still fine after snapping and that a new link will sort out the problem?

 

Could be yes. Having not seen the chain it's difficult to say since a worn chain can also break but it did not break because it was worn.

 

[Minion]

 

Yep' date=' faster-wearing titanium for twice the price all for the sake of saving 39g.

 

 

 

I'd harp on for longer about how stupid all this is, but the titanium Dura Ace cassette costs less than most steel Campy cassettes, and being a Campy rider, I better keep my mouth clamped shut.

 

 

 

Got a quote for a Veloce (105 equivalent) cassette from Solomon's yesterday - R950 [/quote']

R600 landed from Totalcyling - gotta love the margin that the locals put on.

 

I've got a Veloce cassette with 350km (all IDT) on it. R400 if you're interested.

 

[crasher]

JB a Pin came unstuck

[Johan Bornman]

JB a Pin came unstuck

 

OK, that is either from bad assembly or poor shifting. If it happens many kilometers into the chain's life, you've already eliminated the bad assembly option since by then the chain had already been put through anything that will make it pop open at the weak link.

 

You did a bad shift.

 

The biggest risk to a chain breaking in that fashion is within the first 50kms of its installation. That's when a poor assembly will show itself. After than, it's all in the hands of the rider.  Therefore, on stage races, it is a very bad idea to fit a new chain every day.

 

 

 

 

[Colin H]

Ok so help me understand what a poor shift would be, and then how I should be shifting, please!

[Johan Bornman]

Ok so help me understand what a poor shift would be' date=' and then how I should be shifting, please![/quote']

 

A poor shift is easy to recognise. The experienced riders around you smart and grit their teeth. It is noisy, sounds crunchy and ends with a loud "clack" and slight vibration of the chain.

 

A poor shift is done under big power at low speed. Shifting by definition forces the chain sideways. This cross-chain position starts at the bottom where the jockey derails the chain and then stays in that crossover positon as it rolls forward. At the top of the cassette, the chain experiences great tension from your legs and then has to jump a tooth under that tension. It makes a loud clack.

 

At this point the chain is forcefully pulled sideways and the peening on the pin (the mushroomed head) breaks throught he sideplate hole and the chain pops open like an orange under a car's wheel.

 

You avoid it by always de-powering as you shift. An experienced rider can even do this whilst standing.

 

 

[Cassie]

Ok so help me understand what a poor shift would be' date=' and then how I should be shifting, please![/quote']

 

A poor shift is easy to recognise. The experienced riders around you smart and grit their teeth. It is noisy, sounds crunchy and ends with a loud "clack" and slight vibration of the chain.

 

A poor shift is done under big power at low speed. Shifting by definition forces the chain sideways. This cross-chain position starts at the bottom where the jockey derails the chain and then stays in that crossover positon as it rolls forward. At the top of the cassette, the chain experiences great tension from your legs and then has to jump a tooth under that tension. It makes a loud clack.

 

At this point the chain is forcefully pulled sideways and the peening on the pin (the mushroomed head) breaks throught he sideplate hole and the chain pops open like an orange under a car's wheel.

 

You avoid it by always de-powering as you shift. An experienced rider can even do this whilst standing.

 

 

My first tips when I took on MTB was (1) DO NOT USE A CROSS CHAIN!!

(2) shift so that the guy next to you/ behind you don't even notices it....

 

good advice...

 

[Colin H]

Thanks for the advice. Note to self: grt chain checked after cr@p changing on bergendale!

[Guest Big H]

JB a Pin came unstuck

 

OK' date=' that is either from bad assembly or poor shifting. If it happens many kilometers into the chain's life, you've already eliminated the bad assembly option since by then the chain had already been put through anything that will make it pop open at the weak link.

 

You did a bad shift.

 

The biggest risk to a chain breaking in that fashion is within the first 50kms of its installation. That's when a poor assembly will show itself. After than, it's all in the hands of the rider.  Therefore, on stage races, it is a very bad idea to fit a new chain every day.

 

 

 

 

[/quote']

Soooooo..... Jay Bee I am sitting here all dazed and confused...... all my previous sins about hating kempekkernoglia may have all been my own fault. Did I break and torture the chain of my tandem and in the process destroy precious thingies made by the old omies at Tulio's factory......... nooooo noooooo!!!!!!!! woe is me!!!!!!!!!