Going through MTBR.com, there are few parts of a bike that have been more problematic than the bottom bracket. Numerous reports of short-life, abbreviated rides because of ISIS bottom bracket failure infest MTBR, and it seems that unless you have a Phil Wood, your BB will find an untimely death in minutes.
So what's the verdict? Are ISIS bearings too small? Are there any that don't develop play in short periods of time?
Phil Wood owners may just be pussyfooting the BB and thus, it looks like it has a good track record, but it in fact may not be. Plus, the ones that buy PW products usually aren't your typical mountain biking type... i.e. they're [censored] expensive.
Going through MTBR.com, there are few parts of a bike that have been more problematic than the bottom bracket. Numerous reports of short-life, abbreviated rides because of ISIS bottom bracket failure infest MTBR, and it seems that unless you have a Phil Wood, your BB will find an untimely death in minutes.
So what's the verdict? Are ISIS bearings too small? Are there any that don't develop play in short periods of time?
Phil Wood owners may just be pussyfooting the BB and thus, it looks like it has a good track record, but it in fact may not be. Plus, the ones that buy PW products usually aren't your typical mountain biking type... i.e. they're [censored] expensive.
-- Phil, Squid-in-Training
I'm well over 200 lbs. The Truvativ BB lasted about 2 months before it developed play in the bearings, +- 60 miles a week. The Race Face has been hanging in there since last summer but won't stay tight in the shell despite repeated torqueing to spec. Both bb's were the x country models. Don't know about the PW.
I'm well over 200 lbs. The Truvativ BB lasted about 2 months before it developed play in the bearings, +- 60 miles a week. The Race Face has been hanging in there since last summer but won't stay tight in the shell despite repeated torqueing to spec. Both bb's were the x country models. Don't know about the PW.
Paul
What many people don't realize is that Truvative ISIS BBs have ajustable bearing races. With a pair of Truvativ lockring tools you can easily adjust out the play. The bearings are even sericable if you want take completely apart. -- _________________________ Chris Phillipo - Cape Breton, Nova Scotia ramsays-ramsays-Open ↗ online.com
Going through MTBR.com, there are few parts of a bike that have been more problematic than the bottom bracket. Numerous reports of short-life, abbreviated rides because of ISIS bottom bracket failure infest MTBR, and it seems that unless you have a Phil Wood, your BB will find an untimely death in minutes.
So what's the verdict? Are ISIS bearings too small? Are there any that don't develop play in short periods of time?
Most of the stories I've heard involve short lifespan. Is that the result of smaller bearings?
The current concensus on STW is that much is dependent upon the installation and how well they are maintained. People who have had their frames' BBs faced and/or installed them on 'better' frames seem to have had fewer problems. Similarly, regularly pulling them out and making sure there's no moisture in the BB shell appears to help.
I've been running an RF Evolve FR for over a year with no problems. Having said that, it started making some odd noises last time I was out...
I'm well over 200 lbs. The Truvativ BB lasted about 2 months before it developed play in the bearings, +- 60 miles a week. The Race Face has been hanging in there since last summer but won't stay tight in the shell despite repeated torqueing to spec. Both bb's were the x country models. Don't know about the PW.
Paul
What many people don't realize is that Truvative ISIS BBs have ajustable bearing races. With a pair of Truvativ lockring tools you can easily adjust out the play. The bearings are even sericable if you want take completely apart. -- _________________________ Chris Phillipo - Cape Breton, Nova Scotia ramsays-ramsays-Open ↗ online.com
You're right I didn't know that. I'll take another look at truvativ. I might even have that bb laying around.
"bomba" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
ZeeExSixAre said:
Going through MTBR.com, there are few parts of a bike that have been
more
Quoted message said:
Quoted message said:
problematic than the bottom bracket. Numerous reports of short-life, abbreviated rides because of ISIS bottom bracket failure infest MTBR,
and it
Quoted message said:
Quoted message said:
seems that unless you have a Phil Wood, your BB will find an untimely
death
Quoted message said:
Quoted message said:
in minutes.
So what's the verdict? Are ISIS bearings too small? Are there any that don't develop play in short periods of time?
Most of the stories I've heard involve short lifespan. Is that the result of smaller bearings?
The current concensus on STW is that much is dependent upon the installation and how well they are maintained. People who have had their frames' BBs faced and/or installed them on 'better' frames seem to have had fewer problems. Similarly, regularly pulling them out and making sure there's no moisture in the BB shell appears to help.
I've been running an RF Evolve FR for over a year with no problems. Having said that, it started making some odd noises last time I was out...
The spindle is big, and so there is less room for bearings. Now if square taper bearings are larger and have less problems, I can see that being the rectifying issue. But I just don't know... I guess BBs are a replaceable item. Now that Chris mentioned that Truvativs are serviceable, however...
"ZeeExSixAre" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
"bomba" <[email hidden]> wrote in message "]news:[email hidden]...
Quoted message said:
ZeeExSixAre said:
Going through MTBR.com, there are few parts of a bike that have been
more
Quoted message said:
Quoted message said:
problematic than the bottom bracket. Numerous reports of short-life, abbreviated rides because of ISIS bottom bracket failure infest MTBR,
and it
Quoted message said:
Quoted message said:
seems that unless you have a Phil Wood, your BB will find an untimely
death
Quoted message said:
Quoted message said:
in minutes.
So what's the verdict? Are ISIS bearings too small? Are there any
that
Quoted message said:
Quoted message said:
Quoted message said:
don't develop play in short periods of time?
Most of the stories I've heard involve short lifespan. Is that the
result
Quoted message said:
Quoted message said:
of smaller bearings?
The current concensus on STW is that much is dependent upon the installation and how well they are maintained. People who have had their frames' BBs faced and/or installed them on 'better' frames seem to have had fewer problems. Similarly, regularly pulling them out and making
sure
Quoted message said:
Quoted message said:
there's no moisture in the BB shell appears to help.
I've been running an RF Evolve FR for over a year with no problems. Having said that, it started making some odd noises last time I was
out...
Quoted message said:
Quoted message said:
The spindle is big, and so there is less room for bearings. Now if square taper bearings are larger and have less problems, I can see that being the rectifying issue. But I just don't know...
The Spanish BB being developed in BMX by flybikes looks very interesting, I could see it crossing over to MTB's if it takes off.
