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#1
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Octalink ES25 replacement?
The BB on my MTB makes a ticking sound when warmed up, sounds similar to
a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? -- Regards, Joerg http://www.analogconsultants.com/ |
#2
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Octalink ES25 replacement?
On 2017-08-11 11:00, Joerg wrote:
The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? Add-on: Is the ES300 they recommend as replacement better? -- Regards, Joerg http://www.analogconsultants.com/ |
#3
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Octalink ES25 replacement?
On Friday, August 11, 2017 at 11:00:27 AM UTC-7, Joerg wrote:
The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? http://www.ebay.com/itm/Shimano-BB-5....c100506.m3226 Cost three times what the ES25 does and I've never had one fail. |
#5
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Octalink ES25 replacement?
On Friday, August 11, 2017 at 11:56:37 AM UTC-7, Joerg wrote:
On 2017-08-11 11:48, wrote: On Friday, August 11, 2017 at 11:00:27 AM UTC-7, Joerg wrote: The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? http://www.ebay.com/itm/Shimano-BB-5....c100506.m3226 Cost three times what the ES25 does and I've never had one fail. $40 is perfectly ok. Unfortunately their available spindle lengths do not fit the ES25. ES300 has very close to the same spindle lengths, I just don't know whether they are any better than ES25. I believe that the widest available in the ES-25 is 121. The 5500 is available in a 118 and it's my guess that it would fit right on. |
#6
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Octalink ES25 replacement?
On 2017-08-12 07:03, wrote:
On Friday, August 11, 2017 at 11:56:37 AM UTC-7, Joerg wrote: On 2017-08-11 11:48, wrote: On Friday, August 11, 2017 at 11:00:27 AM UTC-7, Joerg wrote: The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? http://www.ebay.com/itm/Shimano-BB-5....c100506.m3226 Cost three times what the ES25 does and I've never had one fail. $40 is perfectly ok. Unfortunately their available spindle lengths do not fit the ES25. ES300 has very close to the same spindle lengths, I just don't know whether they are any better than ES25. I believe that the widest available in the ES-25 is 121. The 5500 is available in a 118 and it's my guess that it would fit right on. I might be able to live with a 3mm chain line offset (have to check the M591 front derailer though) but the other issue is that they supposedly only fit older Shimano crank sets because of the 9mm splines: https://www.excelsports.com/main.asp...or=1&minor= 6 The cranks have to go on super-snug because I am a low cadence masher and often ride with a substantial load on the bike. -- Regards, Joerg http://www.analogconsultants.com/ |
#7
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Octalink ES25 replacement?
On 12/08/17 16:14, Joerg wrote:
snip I might be able to live with a 3mm chain line offset (have to check the M591 front derailer though) but the other issue is that they supposedly only fit older Shimano crank sets because of the 9mm splines: https://www.excelsports.com/main.asp...or=1&minor= 6 The cranks have to go on super-snug because I am a low cadence masher and often ride with a substantial load on the bike. I would be very wary of 3mm. It may work with a dérailleur setup but on my hub gears it needs to be the right side of 2mm or aggro ensues. |
#8
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Octalink ES25 replacement?
On Saturday, August 12, 2017 at 7:14:21 AM UTC-7, Joerg wrote:
On 2017-08-12 07:03, wrote: On Friday, August 11, 2017 at 11:56:37 AM UTC-7, Joerg wrote: On 2017-08-11 11:48, wrote: On Friday, August 11, 2017 at 11:00:27 AM UTC-7, Joerg wrote: The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? http://www.ebay.com/itm/Shimano-BB-5....c100506.m3226 Cost three times what the ES25 does and I've never had one fail. $40 is perfectly ok. Unfortunately their available spindle lengths do not fit the ES25. ES300 has very close to the same spindle lengths, I just don't know whether they are any better than ES25. I believe that the widest available in the ES-25 is 121. The 5500 is available in a 118 and it's my guess that it would fit right on. I might be able to live with a 3mm chain line offset (have to check the M591 front derailer though) but the other issue is that they supposedly only fit older Shimano crank sets because of the 9mm splines: https://www.excelsports.com/main.asp...or=1&minor= 6 The cranks have to go on super-snug because I am a low cadence masher and often ride with a substantial load on the bike. Since this is a road bike BB it's likely that half of the difference is on the left side. |
#9
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Octalink ES25 replacement?
On 8/11/2017 1:00 PM, Joerg wrote:
The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? Ensure the arms are not loose on the spindle first. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#10
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Octalink ES25 replacement?
On 2017-08-11 12:39, AMuzi wrote:
On 8/11/2017 1:00 PM, Joerg wrote: The BB on my MTB makes a ticking sound when warmed up, sounds similar to a hot car engine after it is turned off. It has also develoved an ever so slight play, just a few mils. It is an Shimano ES25 Octalink. How long do you guys let that go before replacing? Can anyone recommend a better quality BB for this that lasts longer than 5k miles and doesn't cost an arm and a leg? Ensure the arms are not loose on the spindle first. They are on tight. The play is also a bit sideways. If I keep riding will it just become gradually worse or can it fail catastrophically in the middle of nowhere? On my last Shimano 600 BB I rode until it had about 0.1" play in the largest chain ring and shifting trim became iffy (old friction shifter bike). But that was an ajustable BB where I could milk out a second life by mounting the cranks 180 degrees rotated. What I don't like on these newfangled BBs is the left side plastic cup. For the road bike I got a UN-55, only aluminum on the left but at least not plastic. -- Regards, Joerg http://www.analogconsultants.com/ |
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