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Downgrading from a 9 speed

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Downgrading from a 9 speed

Old 08-24-18, 06:31 PM
  #1  
adlai
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Downgrading from a 9 speed

my 9 speed bike just had its chain break.

I blame the 9 speed chain.

I suppose it should be trivial to downgrade to an 8 speed. Just get the chain and cassette right?

Or or even lower? 7 speed?
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Old 08-24-18, 06:36 PM
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trailangel
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Just need the shifters and the cabling too.
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Old 08-24-18, 06:43 PM
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There is nothing inherently weaker about a 9-speed chain compared to an 7/8-speed chain. For that matter 10 and 11-speed chains are more than strong enough. for any rider who doesn't abuse them and no chain will tolerate serious misuse.

How did your chain break? Was it joined improperly? Did you reuse a standard pin? Did you make an abusive shift? You could just have easily broken an 8-speed chain.
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Old 08-24-18, 06:49 PM
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Not sure if this is troll... But this is only a concern if you're consistently putting out over 2000 watts during sprints. If this is the case, then there's little that can be done to save your chains other than to be more gentle with how you accelerate, to spin faster rather than mash harder or to switch to a single speed. Obviously, save your hardest mashing for gears where the chain is straightest.
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Old 08-24-18, 06:53 PM
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Unicycle?
No seriously 9 speed has been around for twenty years and is reliable.
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Old 08-24-18, 07:02 PM
  #6  
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Originally Posted by smashndash View Post
Not sure if this is troll... But this is only a concern if you're consistently putting out over 2000 watts during sprints. If this is the case, then there's little that can be done to save your chains other than to be more gentle with how you accelerate, to spin faster rather than mash harder or to switch to a single speed. Obviously, save your hardest mashing for gears where the chain is straightest.
Pro Tour sprinters who do put out over 2000 watts don't break chains. The current copy of VeloNews has an article by Lennard Zinn on chain strength and compares a number of 11-speed chains from various makers. The weakest chain tested broke at over 9200 N (2052 pounds) and the strongest sprinter or MTB rider only generates about 1/3 of that force.

You won't break any chain by sheer strength. If the OP broke a chain it was for some other reason.
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Old 08-24-18, 07:05 PM
  #7  
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As others have mentioned, a 9 speed chain shouldn't break any more than an 8 or 7. Typically poor shifting techniques are the cause.

A rider will find himself/herself in the wrong gear and while pedaling hard and under pressure forces the chain onto an easier gear. With all the ramps and shifting aids the chain will shift under stress. If this is repeated eventually the chain will pull apart. Sometimes a side plate will pull away from a pin and catch in the derailleur and rip it off either whole or in pieces. This makes for a less than enjoyable ride/coast/walk home.

Learn to shift properly and you won't break another chain... unless you leave the bike out in the rain to rust.

​​​​​​​John
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Old 08-25-18, 10:00 AM
  #8  
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a testifying about rider abuse, and poor technique is unstated..

the When do you shift, question .. applying force, when still climbing, (?)
so a taught chain, lateral force can do that..



Is, An internal gear hub rear wheel being considered?...




...
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