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Old 07-13-06, 08:18 PM   #1
Wogster
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Shifty shifting....

Noticed an odd problem, upshifting from cog 1->2->3->4->5->6->7->8 works fine, shifting down 8->7->6->5 works fine, sometimes hangs up on shifting 5->4->3->2 but then shifts fine 2->1 4->3 is the worst, almost never works.

Everything Rear Dir is a Shimano Alivio, cassette is a Shimano HG-30, chain is a KMC Z-27 , shifters are Shimano mountain bike brake/shifters, cables are whatever Norco decided on putting on this thing

Wondering if it's an adjustment issue... I may try playing with the cable adjustment, see if it helps.
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Old 07-14-06, 04:50 AM   #2
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There may be a kink in the shift cable that hangs up at that particular point. Check out the cable run for problems. and rough spots.
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Old 07-15-06, 03:52 PM   #3
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Quote:
Originally Posted by HillRider
There may be a kink in the shift cable that hangs up at that particular point. Check out the cable run for problems. and rough spots.
Actually the rear derailleur is a Acera (Japanese for junk maybe ) The cable looks okay....

More info, today riding, I noticed a piece flapping along the back of the chain, looks like a screw or rivit may have come out of the RD and this piece dropped out at one end (part of the parallelogram) it wasn't loose before that I know of. When I stuck a screw in it, and did a test run through the gears (bike upside down) all seemed well both ways. Will try some flower wire (great stuff), to see if I can kludge it together until I can get something else, guess what, it will NOT be an Acera, bikes not even a year old.....

Anyone want to suggest a rear deraileur that works okay on an 8spd MTB that is Shimano shifter compatable but doesn't cost an arm and a leg (it makes cycling too hard )

Will probably put on a new chain at the same time....
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Old 07-15-06, 04:28 PM   #4
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Shimano LX is the lowest priced RD worth the money.
YMMV
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Old 07-15-06, 04:56 PM   #5
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Should be a warranty on the bike and parts. Did you buy online or LBS? Tougher of course if bought online.
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Old 07-15-06, 08:45 PM   #6
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Originally Posted by masiman
Should be a warranty on the bike and parts. Did you buy online or LBS? Tougher of course if bought online.
Two issues, first I got a deal on the bike from the distributor (half price), which makes it just as bad as buying online, second, I don't want the same RD, which you would get on a warranty claim, that just puts off replacing it with something decent for another year. A couple of questions though:

1) Is this correct, an 8 speed RD can be replaced with a 9 speed, and it will work just as well?

2) Anybody know a place that sells parts cheap in Canada, preferably in the Toronto area?
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Old 07-16-06, 06:24 PM   #7
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Derailleurs are not sold as 8, 9 or 10 speed. The shifters are what control the index movement of the derailleur. The derailleur will work on 5, 6, 7, 8, 9 or 10.

Try craigslist (http://geo.craigslist.org/iso/ca) or maybe MEC (http://www.mec.ca/splash.jsp).
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Old 07-16-06, 08:00 PM   #8
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Quote:
Originally Posted by masiman
Derailleurs are not sold as 8, 9 or 10 speed. The shifters are what control the index movement of the derailleur. The derailleur will work on 5, 6, 7, 8, 9 or 10.

Try craigslist (http://geo.craigslist.org/iso/ca) or maybe MEC (http://www.mec.ca/splash.jsp).
Nothing on CL at the moment, and MEC doesn't list RDs on their website, will take it to the LBS tomorrow and see what they charge If it's under $50 then I'll just get them to do it, if it's more then I'll consider other options. It may be repairable, other then my bailing wire and spit jury rigging, if so, then I will probably go that route.....

I hate replacing, would rather move up a level or two, if the budget allows, that would mean an RD that can handle 9 speeds, maybe a Deore.... However I think that's over my budget, might just keep it jury rigged until winter, then put a Deore on my Christmas List....
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