Snapped spindle

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silva

Über Member
Location
Belgium
@silva, from one non native English speaker to another :smooch:that person was not a dealer: they were a bike mechanic, or a retailer, or a distributor of a particular bike brand. At a push, they were just a guy working in a bike shop.
A dealer deals in drugs, cards at the casino, antiques, etc.
Sorry, but after 44 pages I just had to tell you!
https://bike.shimano.com/dealer-locator.html

Find my dealer​


Your Shimano dealer is never far away. Professional support is always around the corner.
So THAT's why Shimano's mechanical designs Suck!
Their Bicycle Business is just a cover up for dealing drugs, cards at the casino, antiques, etc!
I KNEW IT!
 
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Drago

Legendary Member
So THAT's why Shimano's mechanical designs Suck!

Heresy! If this were 17th century Scotland you'd be burned st the stake.
 

classic33

Leg End Member
If Shimano's HollowTech2 was Massive....
If, if, if, ....
If only you'd not allowed someone to fit something you didn't want or understand it's limits, and pay them for doing so. Twice...
If only you didn't continuously use unsuitable* parts on your bikes.
If you maintained your bikes to a condition to be safe for use on the road.
*If only you didn't brag about how using parts not designed for use on a bicycle saved you money, whilst proving others wrong.
If, if , if, if...


*I mean whoever heard of using an oversized motorbike chain being used on a pedal cycle.
I have sourced industrial chains of the correct internal size to use on a cargo cycle, where the loads might be higher. Never used a motorbike chain, once the two were laid side by side though.
 

silva

Über Member
Location
Belgium
If only you'd not allowed someone to fit something you didn't want or understand it's limits, and pay them for doing so. Twice...
If only you didn't continuously use unsuitable* parts on your bikes.
If you maintained your bikes to a condition to be safe for use on the road.
*If only you didn't brag about how using parts not designed for use on a bicycle saved you money, whilst proving others wrong.
If, if , if, if...
*I mean whoever heard of using an oversized motorbike chain being used on a pedal cycle.
I have sourced industrial chains of the correct internal size to use on a cargo cycle, where the loads might be higher. Never used a motorbike chain, once the two were laid side by side though.
https://www.cyclechat.net/threads/snapped-spindle.309571/post-7593539
 

silva

Über Member
Location
Belgium
A High Light in:
https://www.cyclechat.net/threads/snapped-spindle.309571/post-7593539
also for you:
...
See Mister Ecky H, above is about the subject of the discussion, not about the discussion and not about the persons that discuss, as Some here have Shown, and continued to Show, to Try To Get Away from the Shimano Subject. ;)
Replace Ecky H with classic33.
 

lazybloke

Chocolate eclairs: the peak of human endeavour
Location
Leafy Surrey
My criticism was on the Light Religion that Sacrifies Safety to win a sec a mile in a race.
I've had a skim through the thread in the last couple of days, and you go on about Hollowtech II being all about saving a few grams.

Nope. I prefer HT2 to other BBs because it's easy to take apart. I don't give a stuff about the weight.
 

Webbo2

Über Member
I've had a skim through the thread in the last couple of days, and you go on about Hollowtech II being all about saving a few grams.

Nope. I prefer HT2 to other BBs because it's easy to take apart. I don't give a stuff about the weight.

Just remember Silva soul mate and cycling partner was lured away from him by someone who offered them a Hollow tech ll chainset with talk of the weight saving and ease of maintaining it.
He’s had a thing about Shimano ever since.😏
 

EckyH

It wasn't me!
See Mister Ecky H
I cannot perceive any specific answer to my two simple questions. So I ask again:
  • What exactly does "the same" mean in this context?
  • Which "denial"?
Simple and short sentences with a direct reference to the question make it much easier to understand for me. Thanks in advance.
If, if , if, if...
First signs that the thread becomes a bit iffy? ;)

E.
 

Drago

Legendary Member
The sequel, Square Taper from Roswell, is out soon.

MV5BYzdhNzkyZWItYWJhNi00YmNhLWFiZGMtNGRkNmYwYWYwYmQyXkEyXkFqcGc@._V1_.jpg
 

silva

Über Member
Location
Belgium
About post:
You talk more about the discussion than the subject of the discussion, that was, the safety risk Shimano took with its Hollow Technologies:
- axle breaks that convert their HTversion2 2-piece crankset back to HTversion1 3-piece! :tongue:
> under torsion of a human left leg, damn who had thought that! :tongue:

- cranks instead of massive, consisting of 2 U's glued together, to reduce weight, that return to the state before glueing! :tongue:
> in such numbers and over so many years that they were forced "to do something", that is, a recall:
===
https://www.bicycleretailer.com/ind...rankset-recall-settlement-officially-approved
4 februari 2026
  • Notify every recall retailer of the enhanced inspection process and ensure each retailer has reviewed and understands the training materials, use a magnifying device provided during all inspections, and contact the retail assistance agent with any questions regarding inspection protocols. Court documents indicate Shimano will provide a magnifier similar to this $33 Carson device. Previous Shimano dealer recall materials recommended that retailers inspect with an 11x magnifier but did not provide the device.
  • Extend its express warranty's coverage of bonding separation and delamination by two years from the date of the settlement's preliminary approval.
  • Reimburse settlement class members who previously replaced a defective crankset for out-of-pocket costs associated with those replacements.
  • Pay each of the 14 plaintiffs, as Class Representatives, a $500 Service Award.
Even a loupe and its magnification level was determined, to discover a beginning (or whatever word one may give it) of the return to the 2 separate pieces.
===

https://www.hambini.com/shimano-crankset-failures-an-engineering-analysis/

Ofcourse, unlike cranks, checking for a "started" spindle break process requires disassembly, which is Veeeeeery Haaaaaandy for those that follow the note "Check Regularly". :tongue:

And all aboves crap, just to win a sec a mile, and in the case of cranks, less mass = less inertia to cope with at speed changes.
So hence the statement I made: making it a standard for any1, including Hambini's "The failure occurred in someone with the power output of a shrimp.", LOLWUT?

See Mister Ecky H, above is about the subject of the discussion, not about the discussion and not about the persons that discuss, as Some here have Shown, and continued to Show, to Try To Get Away from the Shimano Subject. ;)
In the directory / Shimano Failures / Cranks:
Hambini's on it again; and absolutely on-point as usual (swearyness-averse look away now):

Really lays bare what an enormous, disgraceful situation this is.

Yes, he confirms this in the video above. I'd assume it's R7000 as it's the same form factor; but evidently just a different bonding / fusing method. Nice short comment in the vid about the cost of perpetually chasing light weight.

For reference masses of the affected (complete) chainsets below courtesy of Jamesthebikeguy on youtube:
105 R7000 - "welded" - 705g
Ultegra R8000 - bonded - 685g
Dura-Ace R9100 - bonded - 629g

So, looking at the two extremes of 105 and Dura-Ace, you're looking at a saving of all of around 10% in exchange for a massive increase in both cost and the liklihood of coming back from your ride with a face like a slab of corned beef...

:rolleyes:

What is named (hence the quotes?) "welded" is instead likely forced-bended (forging) "into" eachother, much like the male/female sides of pushbuttons each consist of, to attach to the fabric.
Shimano changed that to glueing, and Trouble Came, once again, in Shimano Paradise.

According to aboves specs:
- Ultegra models weight "win" towards the previous 105 was 705-685=20 gram, coincidently the same creditcard-calibre weight difference of this topics Spindle Snap that my calculated 29% better torsion resistence delivered by increasing the shafts wall thickness with 50% towards the inside (thus the outer 24 mm staying as required).
- Dura-Ace model increased that "win" to 76 gram.

https://bike.shimano.com/en-NA/info...owtech-road-cranksets-inspection-program.html
The affected models are pre-July 2019

Soooo, Shimano Says there implicitly that in July 2019 they changed something in their production, that would have (I guess we'll see about that in the future) solved the problem they Didn't Know at that time (yes lol), and kept on declaring till september 2023 as user - not their, fault.
So back in juli 2019, some guy or girl Engineer popped up, saying from this day we will Change That, without him or her knowing it would solve a claimed as unaware of problem.
Yes, Shuuuuuure! :tongue:

The Dura-Ace model is Declared as the Flagship (read: more bucks) for Racers, with the Ultegra coming in second (read: less bucks) in the weight-cheating race.
If they also rank like this in the failure race, statistics by users, or easier, by Shimano of their crank recall are needed.
But since the latter decided to Keep Silent in september 2019, the expectations are probably grim.
 
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