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Octalink ES25 replacement?



 
 
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  #1  
Old August 11th 17, 07:00 PM posted to rec.bicycles.tech
Joerg[_2_]
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Posts: 6,016
Default 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  
Old August 11th 17, 07:03 PM posted to rec.bicycles.tech
Joerg[_2_]
external usenet poster
 
Posts: 6,016
Default 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  
Old August 11th 17, 07:48 PM posted to rec.bicycles.tech
[email protected]
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Posts: 3,345
Default 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.
  #4  
Old August 11th 17, 07:56 PM posted to rec.bicycles.tech
Joerg[_2_]
external usenet poster
 
Posts: 6,016
Default Octalink ES25 replacement?

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.

--
Regards, Joerg

http://www.analogconsultants.com/
  #5  
Old August 12th 17, 03:03 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 3,345
Default 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  
Old August 12th 17, 03:14 PM posted to rec.bicycles.tech
Joerg[_2_]
external usenet poster
 
Posts: 6,016
Default 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  
Old August 12th 17, 04:21 PM posted to rec.bicycles.tech
Tosspot[_3_]
external usenet poster
 
Posts: 1,563
Default 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  
Old August 12th 17, 08:10 PM posted to rec.bicycles.tech
[email protected]
external usenet poster
 
Posts: 3,345
Default 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  
Old August 11th 17, 08:39 PM posted to rec.bicycles.tech
AMuzi
external usenet poster
 
Posts: 13,447
Default 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  
Old August 11th 17, 09:04 PM posted to rec.bicycles.tech
Joerg[_2_]
external usenet poster
 
Posts: 6,016
Default 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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