Failure of victoire hub

Would anyone be able to shed any light on the carnage surrounding my victoire hub.

Flat smooth road, gentle commute, victoire hub with H+soon archetype. Then BANG, the large flange bit just sheared away causing six spokes to tangle in the frame. Wheel absolutely ruined. See pic.

What could have happened? Anyone heard of this before?

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radial lacing bad. cyclic loading brittle fracture prbly.

thanks a lot cip1000. However the wheel was cross laced. I bet victoire won't honour a replacement either way.

Thanks again

It's radial on the broken side. Eyeballs! ENGAGE!

Them there hubs are made from "aero grade 7075-T6 alloy for every parts (sic) of the hubs, this material is 300% stronger than the common alloy used in the cycle industry"

Insist on "space grade" aluminium! Don't settle for "aero grade" which is often used by unscrupulous vendors hawking basic "plane grade" products and "plane grade" is rubbish next to alloy that is ready for the rigors of space.

If there is an obvious crack that has propagated, or I was bored, I'd have a chat with the manufacturer, but likely they will say that it was built wrongly or something else but that it was surely all your fault, (but in French).

The "the common alloy used in the cycle industry" probably has a lower Young's modulus.

i Always cross thread mine both sides to make sure, since the radial laced side is the broken one and this can happen when the spokes have been done to tight.

i Always cross thread mine both sides to make sure, since the radial laced side is the broken one and this can happen when the spokes have been done to tight.

Sorry hippy i cant actually beleive ive never noticed that before. I never thought for a second the wheelbuilder would have done that. I think the mystery is solved. I really appreciate the input. An expensive lesson learned but no injury.

Thanks again.

radial lacing shouldnt ever be done on the rear, thats what happened. fronts are ok but manufacturers apparently advise against it whatever the weather

heads-in might be also a part of a reason cause it bends the flange inwards

Not true if you dish to accept a multi-speed cassette and don't use a disc brake, for example Ksyrium SLR come radial non-driveside. The tension on each side isn't equal unlike in this instance.

Who built?...

Pifko ....it was an ebay buy but the guy was a wheelbuilder of some description. Gonna look back into it. Never really questioned the lacing.

Looks like same failure mode as Hope hubs CNC'd out of lumps of alu billet compounded by stupid lacing.

Pretty hubs but forging before CNC seems to make a world of difference as a Google search for busted Shimano hub flanges makes clear.

Well, this has had a better outcome than I expected.

Victoire have sprung into action and offered to build a replacement body (for free) if I send the hub to them. Naturally they 100% blamed the spoke pattern but they really could have left me high and dry so it is thoroughly decent of them.

nice.

Although Victoire has great customer service, I've seen a lot of Victoire hubs fail. A friend of mine has had his hubset replaced 3 times within a month (no radial lacing)

Jaap, was it the same sort of issue? I really dont want it happening again

I wonder what Victiore do differently to MACK? Their hubs are the same material and CNC'd but I have not heard of macks failing like that?
Very good of them to replace the shell but damn, the wheel builder has a lot answer for. Radial on a rear, crazeeeee.

some did, some didn't. Saw 2 hubs with failed flanges and 4 with failed bearings (within weeks).. on the other hand I have a friend (100+ kg) riding without any issues.. maybe they just had a bad batch or something