Disc Failure

There's a lot wrong here but the flopping disc and loosened
bolts have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened
bolts have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my six-bolt rotors or the factory supplied thread-locker on rotor bolts.

-- Jay Beattie.

On 29/06/2020 02:06, jbeattie wrote:
On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts
have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my
six-bolt rotors or the factory supplied thread-locker on rotor
bolts.

I've never come cross the idea that people *don't* use a drop of
LocTite Blue on them. One of the few (only?) places I use thread lock.

On 29/6/20 4:24 pm, Tosspot wrote:
On 29/06/2020 02:06, jbeattie wrote:
On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts
have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my
six-bolt rotors or the factory supplied thread-locker on rotor
bolts.

I've never comeÂ* cross the idea that people *don't* use a drop of
LocTite Blue on them.Â* One of the few (only?) places I use thread lock.

I admittedly have not been using disc brake equiped bikes for many
years, but I haven't had any rotor bolts come loose either and I don't
bother with thread goop. I just nip them up tight. I think I would
notice fairly quickly if they came loose and I always carry a multi tool
so I could easily tighten the bolts while I am out.

--
JS

On Tuesday, June 30, 2020 at 1:04:04 AM UTC-7, James wrote:
On 29/6/20 4:24 pm, Tosspot wrote:
On 29/06/2020 02:06, jbeattie wrote:
On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts
have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my
six-bolt rotors or the factory supplied thread-locker on rotor
bolts.

I've never comeÂ* cross the idea that people *don't* use a drop of
LocTite Blue on them.Â* One of the few (only?) places I use thread lock.

I admittedly have not been using disc brake equiped bikes for many
years, but I haven't had any rotor bolts come loose either and I don't
bother with thread goop. I just nip them up tight. I think I would
notice fairly quickly if they came loose and I always carry a multi tool
so I could easily tighten the bolts while I am out.
Wear on the disk cause vibration that can counter-rotate the screws out. It may be likely that you look often enough at your bike to catch if but proper torque is not "nipping it up. As Andrew's picture demonstrates.

On Tuesday, June 30, 2020 at 4:29:59 PM UTC+2, wrote:
On Tuesday, June 30, 2020 at 1:04:04 AM UTC-7, James wrote:
On 29/6/20 4:24 pm, Tosspot wrote:
On 29/06/2020 02:06, jbeattie wrote:
On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts
have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my
six-bolt rotors or the factory supplied thread-locker on rotor
bolts.

I've never comeÂ* cross the idea that people *don't* use a drop of
LocTite Blue on them.Â* One of the few (only?) places I use thread lock.

I admittedly have not been using disc brake equiped bikes for many
years, but I haven't had any rotor bolts come loose either and I don't
bother with thread goop. I just nip them up tight. I think I would
notice fairly quickly if they came loose and I always carry a multi tool
so I could easily tighten the bolts while I am out.
Wear on the disk cause vibration that can counter-rotate the screws out. It may be likely that you look often enough at your bike to catch if but proper torque is not "nipping it up. As Andrew's picture demonstrates.

Every 6 bolt disk I bought came with screws with that blue goop on. Every centerlock disk I bought came with a lockring. If you torque the screws or lockring to spec the disk don't come loose.

Lou

wrote:
On Tuesday, June 30, 2020 at 1:04:04 AM UTC-7, James wrote:
On 29/6/20 4:24 pm, Tosspot wrote:
On 29/06/2020 02:06, jbeattie wrote:
On Sunday, June 28, 2020 at 2:41:57 PM UTC-7, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts
have worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Wow, even with earbuds, how do you not feel that? I use loctite on my
six-bolt rotors or the factory supplied thread-locker on rotor
bolts.

I've never comeÂ* cross the idea that people *don't* use a drop of
LocTite Blue on them.Â* One of the few (only?) places I use thread lock.

I admittedly have not been using disc brake equiped bikes for many
years, but I haven't had any rotor bolts come loose either and I don't
bother with thread goop. I just nip them up tight. I think I would
notice fairly quickly if they came loose and I always carry a multi tool
so I could easily tighten the bolts while I am out.
Wear on the disk cause vibration that can counter-rotate the screws out.
It may be likely that you look often enough at your bike to catch if but
proper torque is not "nipping it up. As Andrew's picture demonstrates.

I’ve never had this happen, used disks for 13/14 years, the old MTB is now
the commuter and has done fairly intergalactic mileage, did change the
brakes about 7/8 years ago can’t remember if the rotas where changed at
that point or not?

Either way the rotas have been there and on my other two bikes for quite a
few years and haven’t ever loosened, clearly can happen.

Roger Merriman

On 6/28/2020 5:41 PM, AMuzi wrote:
There's a lot wrong here but the flopping disc and loosened bolts have
worn into the fork casting.

http://www.yellowjersey.org/photosfr...t/faildisc.jpg

Could be a great advertisement for earbuds!

Yow!

--
- Frank Krygowski