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The Failed Parts Thread

Posted: Sun Jun 16, 2013 6:59 pm
by spOOn1965
All cyclists, have experienced failing parts, when riding.
-In some cases very minor, in other, -very dramatic !
The purpose of this thread, is to learn from others, that "-Took one, for the team.."

Here, on WW, -We see a little more of failing, because We push the limits !
-Some builders tune already light parts, even more !
- That is called Evolution ! Very important for the human race.

The thread is not about wrong usage, or very old, fatigued components.
-And hopefully not about the eventual crashing, and personal damage.

-Just a brief description (and pic.) of part, -and what went wrong.

I'll start with one now.

Pulley Wheels, Aerozine 5.8gr. a pcs.
Weak bearing..jpg

Minimal sized ball-bearing, Broken after 10 days use. Heavy play and sandy feeling.
Had an extra Aerozine unused, and when pressed a little hard with fingers only, it dislocated inner race, and is now broken too ! I have to say, the seller (Taiwan) refunded Me instant (Like He knew they were weak), so no financial or personal damage involved.

The Failed Parts Thread

Posted: Sun Jun 16, 2013 6:59 pm
by Weenie

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Re: The Failed Parts Thread

Posted: Sun Jun 16, 2013 8:23 pm
by fitty4
I had some jockey wheel similar but made of alu with a lot of play causing the chain to jump of the jockey wheel.
Nice thread, maybe it will guide people to stay of certain products

Re: The Failed Parts Thread

Posted: Sun Jun 16, 2013 8:53 pm
by spOOn1965
Hi fitty4.
When You say "similar, but made of alu -", I get a little confused...
My Aerozines are made of alu ! -Was Yours, exactly the same model (5.8gr) as on My picture, -or almost the same ?
I hope this thread can be a precise guide to avoid certain specific versions of WW-stuff, that is no good.
(and no need to reprint the entire post again when replying.)

Hope to see some broken carbon also..

Re: The Failed Parts Thread

Posted: Mon Jun 17, 2013 7:59 am
by spOOn1965
As this thread has been moved here (Cycle Chat), the easy Photo attachment feature is gone...
I don't use external Photo-servers to keep My pics. -So no more (picture-less) posts from Me.
The close-ups, of parts was an important way to recognize the exact versions of bad parts.
Good luck, buying light stuff that breaks easy.

Re: The Failed Parts Thread

Posted: Tue Jun 18, 2013 12:57 am
by Valbrona
spOOn1965 wrote:All cyclists, have experienced failing parts, when riding.


Never had anything fail in 30 years and zillions of miles. You buy the right kit for any particular application.

Re: The Failed Parts Thread

Posted: Tue Jun 18, 2013 1:04 am
by chipomarc
Still going strong after 30 years

Image

Re: The Failed Parts Thread

Posted: Tue Jun 18, 2013 11:22 am
by spOOn1965
Congratulations !
I also still have some bikes from the early 80's, that has never failed in any components !
They are built Heavy Duty, all over.

-But The true WW-builds, (Where We try to construct an Ultra light ride, still safe), are pushing the limits for the new materials used.
In this process, failures are important, for setting these limits.
-Do not be shy of showing Your Light-experiments, that was tuned a little to much..
-It only shows that You are active in the process of development, and testing, of new solutions. :thumbup:

...For some though, -better safe and heavy.

Re: The Failed Parts Thread

Posted: Thu Jun 20, 2013 5:08 am
by Wingnut
I had a Litespeed Ti seatpost snap back in about 95...head came clean off while I was riding home...had to pedal about 20km without being able to sit down!

Image

Re: The Failed Parts Thread

Posted: Thu Jun 20, 2013 5:11 pm
by spud
what specifically broke? The Ti flanges welded to the top of the shaft, the upper clamp, or the pull down collars? Just curious.

Re: The Failed Parts Thread

Posted: Thu Jun 20, 2013 5:32 pm
by stella-azzurra
Still wearing the knit gloves. Nice!
Was this a period ride? :mrgreen:

chipomarc wrote:Still going strong after 30 years

Image

Re: The Failed Parts Thread

Posted: Thu Jun 20, 2013 5:39 pm
by FIJIGabe
My Trek Madone has snapped two seatpost bolts. It's the teardrop shape seatpost, not the current design, and the bolt keeps shearing off inside the post, so there is really no salvaging it. Each time, it has cost me a new post, since it isn't covered in the frame's warranty.

The Failed Parts Thread

Posted: Thu Jun 20, 2013 6:24 pm
by mattyb95
FIJIGabe wrote:My Trek Madone has snapped two seatpost bolts. It's the teardrop shape seatpost, not the current design, and the bolt keeps shearing off inside the post, so there is really no salvaging it. Each time, it has cost me a new post, since it isn't covered in the frame's warranty.


Do you not have an argument of 'fitness for purpose' if it keeps happening and as they have changed the design since too. Failing once could just be unlucky but more than once seems to imply either you are doing something wrong in installation or a design flaw.

The Failed Parts Thread

Posted: Thu Jun 20, 2013 10:07 pm
by hornedfrog
Design flaw. I've had it happen as well, twice actually. Both times bolts were properly torqued, slightly under the recommended torque the second time. The real pain about it is that the bolts tend to sheer of inside the post and are almost impossible to remove. Making a $2 part fail into a $75 part replacement or whatever they cost.

Re: The Failed Parts Thread

Posted: Fri Jun 21, 2013 8:06 am
by Wingnut
spud wrote:what specifically broke? The Ti flanges welded to the top of the shaft, the upper clamp, or the pull down collars? Just curious.


The curved Ti plate tore clean off the top of the shaft...the clamp etc was all still attached to the saddle... :roll:

The Failed Parts Thread

Posted: Fri Jun 21, 2013 10:05 am
by Cjcc67
A titanium bolt snapped on my 3T ARX stem, it was not over torqued. A search after the fact revealed this is common.

The Failed Parts Thread

Posted: Fri Jun 21, 2013 10:05 am
by Weenie

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Great Prices ✓    Broad Selection ✓    Worldwide Delivery ✓

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