Weird lines on Mavic 217 SUP rims

[shepp]

Thank you everyone for your reply. I told the owner to do some NDT like penetrating dye to check if these are cracks or not. I will let you know if there will be any results.

What happened?

 

[madjh]

Uff I own the 220, and are ok for now, but I´m very scared because I have last month discover this .... And a closer isnpection reveals 6 more of this cracks in one rim so no reparable with weld because it will appear everywere. If I have in the mavic too I will give up with old school stuff. It is sad to see

 

[PhillB]

Uff I own the 220, and are ok for now, but I´m very scared because I have last month discover this .... And a closer isnpection reveals 6 more of this cracks in one rim so no reparable with weld because it will appear everywere. If I have in the mavic too I will give up with old school stuff. It is sad to see

View attachment 921265

Quite a lot of retro rims out there are living well beyond their expected lifetimes, even if they aren't thrashed.

 

[bikeworkshop]

Quite a lot of retro rims out there are living well beyond their expected lifetimes, even if they aren't thrashed.

And the cleverer and lighter it is, the shorter the expected lifespan.
You don't put extra metal on a racing rim - and if it's designed to last one racing season, the second could easily kill it

 

[Nabeaquam]

Uff I own the 220, and are ok for now, but I´m very scared because I have last month discover this .... And a closer isnpection reveals 6 more of this cracks in one rim so no reparable with weld because it will appear everywere. If I have in the mavic too I will give up with old school stuff. It is sad to see

View attachment 921265

They don’t make stuff like they used to. So much junk in the 2020s. These rims from 1880s are still fine. Clean them up and replace the rusted to thin wire spokes.
1950s respoked drop center rims.

 

[bikeworkshop]

They don’t make stuff like they used to. So much junk in the 2020s. These rims from 1880s are still fine. Clean them up and replace the rusted to thin wire spokes.View attachment 921301View attachment 921302View attachment 921307

Can you weigh them?

 

[bikeworkshop]

In the 1880s disposable culture wasn't even a twinkle in the eye!

 

[Nabeaquam]

Can you weigh them?

The drop center chrome steel rims weigh as much as a truck. The wood rims and tubular tires will give modern wheels a run for their money. Their surprising light.

 

[bikeworkshop]

The drop center chrome steel rims weigh as much as a truck. The wood rims and tubular tires will give modern wheels a run for their money. Their surprising light.

Only wooden rims turn into a mediaeval suicide device if you hit a pothole hard

 

[Nabeaquam]

Only wooden rims turn into a mediaeval suicide device if you hit a pothole hard

These old bikes have a horrible riding position. It feels like you’re peddling less down than modern bikes. Their fixed gear so you have to steer away from potholes, pedestrians, cars or jump off.