Wheel Recall ( Snowflake ) - The Definitive Truth

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Wobbly
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by Wobbly »

So how good is your dental insurance ?
They still break occasionally
After 20 years as a professional bike mechanic and 30 years as an engineer I know just enough to be dangerous !
ME 109
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by ME 109 »

That wheel cracked but didn't break into two pieces. The wheel was cut into two pieces to reveal information about why it cracked. I'd like to see a clear close up of the cracks.
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Kurt in S.A.
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by Kurt in S.A. »

From the poor picture, I think I can see beachhead marks on the hub spoke at the 6:00 position. That would make sense as the crack could have started on one of the flat surfaces and as the hub tries to rotate relative to the outside rim, the crack would progress through the spoke. The spokes are less likely to bend out of plane due to the cross sectional stiffness. That's why they added the webbing where they did.

Kurt in S.A.
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SteveD
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by SteveD »

That picture is on my photobucket page. Photobucket are extortionists and accessing the pictures is now very difficult. From memory there was another picture with that one. I'll need to go search and see what I can find.
Cheers, Steve
Victoria, S.E.Oz.


1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
Kurt in S.A.
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by Kurt in S.A. »

Older thread here on the forum...some good pictures of the failure.

viewtopic.php?t=9840

Ha! It's on page 1 of this very thread!! :lol:

Kurt in S.A.
ME 109
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by ME 109 »

I still can't tell from the pics and it doesn't matter because a precise report of the failure would be out there somewhere so I can only guess.
Was it a single event that took out four spokes? Just fatigue cracks that were not through? What do the intact spokes look like at the same point? What does the cracked surface tell about the failure's origins and progression?

And it still doensn't matter 'cause I got reinforcement!
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Gibson
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by Gibson »

Wow, they look great in gold!!
Wobbly
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by Wobbly »

A better title for this thread might be...
"Snowflake and the 7 Dwarfs" :roll:
After 20 years as a professional bike mechanic and 30 years as an engineer I know just enough to be dangerous !
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by The Veg »

:mrgreen: :mrgreen: :mrgreen:
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SteveD
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Re: Wheel Recall ( Snowflake ) - The Definitive Truth

Post by SteveD »

This'd put the frighteners up ya I reckon!

Image
Cheers, Steve
Victoria, S.E.Oz.


1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
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