| Title: | Bicycling |
| Notice: | Bicycling for Fun |
| Moderator: | JAMIN::WASSER |
| Created: | Mon Apr 14 1986 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3214 |
| Total number of notes: | 31946 |
Has anyone had any problems with Shimano 600 EX freewheels? I have recently broken four freewheels in about 2 months. I have had a 3 year trouble free run with the 600 EX group up till then. No 1 was on my road bike. Going up a hill one day there was a bang and I had a freewheel in both directions. I was not very upset as the freewheel had done about 20000 miles, nearly all of it in hilly country. Off to the bike shop and buy a new one. No 2 was the replacement for No 1 Going down a hill about one month later there was lots of nasty noises from the rear end (no the bikes). The The inner body of the freewheel had sheared, allowing the freewheel to disassemble spilling ball bearings all over the place. Off to the bike shop and they say thats strange, shouldn't do that and give me a new one. So far so good with the new one No 3 was on my mountain bike. The freewheel started bind at one point when you rotate it. The freewheel had been in LOTS of mud so I thought gung had got into the insides. Off to the bike shop and buy another one. No 4 was the replacement for No 3. It started doing exactly the same as No 3 and I havnt been anywhere near the mud. Off to the bike shop and the owner looks over the counter to see if I have 40 inch thighs. The owner and I are going to pull the freewheel apart to see what is going wrong. Jim
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 503.1 | No problems with 600 EX casette's | RETORT::SCHNARE | CHARLIE SCHNARE | Fri Dec 11 1987 11:26 | 3 |
I have a 600 EX cassette hub which has about 30,000 miles on it.
When I was racing I had it overhauled about four years ago and have
done nothing to it since. Still no problems.
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| 503.2 | mine broke | TALLIS::JBELL | Wot's..Uh the Deal? | Fri Dec 11 1987 13:09 | 13 |
I had a 600 EX cassette hub which had about 5,000 miles on it when it
became a double freewheel (spinning both directions). Quck work with a
spare brake cable changed it to a fixed gear 12-speed, and I rode it 15
miles to home.
Perhaps the failure was hastened by my attempts at overhaul, since you
can't use the normal dunk and oil method that works on freewheels.
Perhaps it was brought on by the fully loaded tour through NH just 3
months earlier.
Freehubs are nice when they work, but when they fail, you loose the wheel.
-Jeff
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| 503.3 | 5th broken freewheel in a year! | AUSSIE::GROHN | Mon Jun 20 1988 20:13 | 9 | |
I dont beleive it - Freewheel No 5 has started to play up in the same
way that No 3 & No 4 (see .0). Has anyone else been having problems?
When I pulled apart No 3 & No 4, I found that one of the little
ratchets inside of the freewheel had broken into small peices of metal,
which then jammed the freewheel.
Jim
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