Unbelievable Blowout of Conti GP5000S within max pressure.

[Kubackjeee]

Extralite strikes again, not a company I have much faith in with their products.

Literally extralight approach to safety and quality

[cyclespeed]

Just an interesting side story on this subject;

Some friends of mine brought their bikes to Mallorca, and 1 guy was building them and pumping up all the tyres. He put 7 bar in them, (he's a bit old school and I think they were either 25 or 28mm) and the tyre on the Enve hookless blew off in spectacular fashion, damaging the tyre and various ears....!

So they had to drive into town and buy a new tyre and get it put on by a pro.

So yes, user error, but it shows how easy it can be to be a bit careless or forgetful, especially when confronted with multiple bikes all demanding different max pressures. And what if he had just gone to 6 bar, and it was OK, but blew out in the 40'C heat when it hit a bump.......?

Just really pointless to introduce this extra risk to cycling in my opinion.

[okx]

Just an interesting side story on this subject;

Some friends of mine brought their bikes to Mallorca, and 1 guy was building them and pumping up all the tyres. He put 7 bar in them, (he's a bit old school and I think they were either 25 or 28mm) and the tyre on the Enve hookless blew off in spectacular fashion, damaging the tyre and various ears....!

So they had to drive into town and buy a new tyre and get it put on by a pro.

So yes, user error, but it shows how easy it can be to be a bit careless or forgetful, especially when confronted with multiple bikes all demanding different max pressures. And what if he had just gone to 6 bar, and it was OK, but blew out in the 40'C heat when it hit a bump.......?

Just really pointless to introduce this extra risk to cycling in my opinion.

I'm not a fan of hookless rims, but putting 7 bar's in to a hookless wheels, for me sound same as trying to wash a cat in washing machine and after that drying him in microvave oven

[warthog101]

^^

[cyclespeed]

Just an interesting side story on this subject;

Some friends of mine brought their bikes to Mallorca, and 1 guy was building them and pumping up all the tyres. He put 7 bar in them, (he's a bit old school and I think they were either 25 or 28mm) and the tyre on the Enve hookless blew off in spectacular fashion, damaging the tyre and various ears....!

So they had to drive into town and buy a new tyre and get it put on by a pro.

So yes, user error, but it shows how easy it can be to be a bit careless or forgetful, especially when confronted with multiple bikes all demanding different max pressures. And what if he had just gone to 6 bar, and it was OK, but blew out in the 40'C heat when it hit a bump.......?

Just really pointless to introduce this extra risk to cycling in my opinion.

I'm not a fan of hookless rims, but putting 7 bar's in to a hookless wheels, for me sound same as trying to wash a cat in washing machine and after that drying him in microvave oven

If you had 8 wheels in front of you, would you know which were hookless and which weren't? A keen rider who keeps up to date on forums etc. maybe but most others no, it's not that obvious.

[okx]

Just an interesting side story on this subject;

Some friends of mine brought their bikes to Mallorca, and 1 guy was building them and pumping up all the tyres. He put 7 bar in them, (he's a bit old school and I think they were either 25 or 28mm) and the tyre on the Enve hookless blew off in spectacular fashion, damaging the tyre and various ears....!

So they had to drive into town and buy a new tyre and get it put on by a pro.

So yes, user error, but it shows how easy it can be to be a bit careless or forgetful, especially when confronted with multiple bikes all demanding different max pressures. And what if he had just gone to 6 bar, and it was OK, but blew out in the 40'C heat when it hit a bump.......?

Just really pointless to introduce this extra risk to cycling in my opinion.

I'm not a fan of hookless rims, but putting 7 bar's in to a hookless wheels, for me sound same as trying to wash a cat in washing machine and after that drying him in microvave oven

If you had 8 wheels in front of you, would you know which were hookless and which weren't? A keen rider who keeps up to date on forums etc. maybe but most others no, it's not that obvious.

if all of them would be mine - yes.
maybe it's only me and my approach to things, if doing something you must know what you are doing, if don't know, don't improvise and read manual

[warthog101]

Who the hell puts 7 bar in a 28c tyre? Don't let that guy anywhere near your bike is the learning here.

[6fu]

You would be amazed how uninformed some riders are. I've seen plenty hookless wheels run with regular clincher tire+tube at who knows what pressure. All because Giant thought it would be great to supply mid range bikes with hookless wheels.

If I see it I try to inform the riders, but some of them are just, "meh it's fine I've had this for X amount of time, no problems".

Just a few years ago 25mm was standard in peloton, and pressures above 7bar were common, yet the industry thought it would be a great idea do switch to technology with 5bar max limit.

[CampagYOLO]

You would be amazed how uninformed some riders are. I've seen plenty hookless wheels run with regular clincher tire+tube at who knows what pressure. All because Giant thought it would be great to supply mid range bikes with hookless wheels.

If I see it I try to inform the riders, but some of them are just, "meh it's fine I've had this for X amount of time, no problems".

Just a few years ago 25mm was standard in peloton, and pressures above 7bar were common, yet the industry thought it would be a great idea do switch to technology with 5bar max limit.

This. I've also seen loads of people run standard clinchers and tubes on Zipp wheels. All they know is that Zipp make good carbon wheels which would be a good upgrade, half the time they don't even realise they're hookless and hence have more limitations to them.

[goodboyr]

Need a separate thread on uninformed cyclists. Then we can go to town. Lots of stories.

Sent from my SM-S918W using Tapatalk

[damond]

If you had 8 wheels in front of you, would you know which were hookless and which weren't? A keen rider who keeps up to date on forums etc. maybe but most others no, it's not that obvious.

Nowadays it's literally written in every rim what's the max pressure so stop justifying your friend's negligency... I would be pissed if someone would do that to a wheel of mine because wether it would have done without my permission or if it was me asking for it, i would let him know what pressure to pump it...

Nothing to see here, move on.

[6fu]

Yeah.... Even worse, sometimes casual/uninformed cyclists take the bike to lbs to have it set up tubeless, and bikeshop pumps it up to 7 bar. If only there was technology that would ensure that the tire doesn't blow off the rim in such cases.

[damond]

Sometimes "casual/uninformed cyclists" also tighten their bolts way over the maximium torque and shit happens.

[eins4eins]

Yeah.... Even worse, sometimes casual/uninformed cyclists take the bike to lbs to have it set up tubeless, and bikeshop pumps it up to 7 bar. If only there was technology that would ensure that the tire doesn't blow off the rim in such cases.

Does every technology have to be idiot proof?
were not talking about wheels and tires for a city bike, but expensive, very specialized "high-tech" equipment. Off course stuff like this has some limitations and needs to be handled differently.

[6fu]

Yeah.... Even worse, sometimes casual/uninformed cyclists take the bike to lbs to have it set up tubeless, and bikeshop pumps it up to 7 bar. If only there was technology that would ensure that the tire doesn't blow off the rim in such cases.

Does every technology have to be idiot proof?
were not talking about wheels and tires for a city bike, but expensive, very specialized "high-tech" equipment. Off course stuff like this has some limitations and needs to be handled differently.

Well, yes, there has to be redundancy. Every type of tire has it, otherwise car tires would be blowing off left and right as there is much more people driving cars with pressures or loads exceeding maximum limit than cyclists.

And to the earlier post about bolts, yes, components that are specced to certain torque also have redundancy as not every torque wrench is calibrated, and some people will just wing it without one.

Every mass produced component needs to have considereable amount of redundancy. I'm not talking about nieche components with very strict limitations like schmolke, darimo etc, but major manufacturers like zipp, giant etc.