More dodgy GSXR frames, should be banned

[GB-Canada]

I have seen this video a few times now and there are a couple of things that stand out 1 ) no way the speed is correct
2 ) the break is not on a weld
3 ) the hole where the break appears to start from is on the
under side of the break (I mean the crack
opened from the hole to the top of the frame )
so this is what I make of it.....speed to high,failure due to excessive LOAD or vibration,the failure happened very quickly or the bike would have had a large amount of steering rake(very noticeable).THIS STINKS of bad lies and Suzuki knows it.(Many bad wheelies ?)
I just had an incident with a major manufacturer and they will try to stay out of court if possible.... but they wont take blame for things they are not responsible for.
BTW I am a mechanic at a two line dealership and I have seen things like things before.... just my take on it

[thehollowmen]

I remember a review of the bike last year said it would pull away in top gear from under 1000 rpm.. I think it has plenty power to continue moving even after he closes the throttle

but still I'm unsure as to how he got so much injury at so low speed, if he managed to stay upright.

then again I'm not an expert

[SARGE]

Bloody cheap crap, disgraceful.....
Someones gonna get hurt!!
http://www.wsbtv.com/news/9314629/detail.html

no way in hell he's gonna take out a mailbox and slide that far at only 25 mph (40 kph...)

i call bullshit

[Shaun]

no way in hell he's gonna take out a mailbox and slide that far at only 25 mph (40 kph...)

i call bullshit

True that, all any one had to do was read the story fully in the first place and they would have realised that this is a crock of shit. How many of these bikes have been racing world wide for the last 2 years, SHIT LOADS, how many did we see with frame trouble here in NZ, NONE!

[SARGE]

True that, all any one had to do was read the story fully in the first place and they would have realised that this is a crock of shit. How many of these bikes have been racing world wide for the last 2 years, SHIT LOADS, how many did we see with frame trouble here in NZ, NONE!

i see a few crashed Gixxers ( funny that ..)...


none.. including SPECTACULAR crashes have snapped on the main stress-bearing frame ..


subframes snap all the time though... but only when they loop or highside..


sounds like sparky fucked up a wheeliie and when Suzuki guessed right he decided to smear them in public

[imdying]

I remember a review of the bike last year said it would pull away in top gear from under 1000 rpm.. I think it has plenty power to continue moving even after he closes the throttle

but still I'm unsure as to how he got so much injury at so low speed, if he managed to stay upright.

then again I'm not an expert

How far he or the bike slid would be a product of momentum. 25mph wouldn't generate enough momentum to carry the bike that far. Regardless, it's how far he travelled, not the bike, that's in question here.

[Shaun]

i see a few crashed Gixxers ( funny that ..)...


none.. including SPECTACULAR crashes have snapped on the main stress-bearing frame ..


subframes snap all the time though... but only when they loop or highside..


sounds like sparky fucked up a wheeliie and when Suzuki guessed right he decided to smear them in public

One of my team bikes had a massive crash at Ruapuna last year, it completely broke the Tripple clamps into 3 pieces and bent one fork leg and destroyed the front wheel, to the point that there were no spokes left on the rim, wrecked the radiator and oil cooler along with destroying a Tie Yoshi exhaust system

Guess what, No frame damage! well bugger me

[The_Dover]

I think it's a crock of shit.

In both my crashes the frame would have been put under massive stress.

One was a head on at a closing speed of ~70 km/h and the other was "sunstrike" going a little quicker (which actually tore the front wheel off the forks..)

The frame on both bikes was straight and undamaged.

Looking at the break you can see that the lower half of it is a brittle or fast fracture whereas the top half looks more like a drawn fracture. This would indicate that the force was pushing the wheel forward and up, ie landing a wheelie too hard. If it had been cause under normal riding the wheel would be subjected to a rearward force, the fracture would begin at the top.

If it was a fatigue crack any engineer worth his salt could look at the metal break and determine the mode of failure. That was definitely a fast fracture.

Light alloys are brittle but tough, it would take a hell of a force to break it in that manner and when it goes it fails in an easily recognisable manner.

Typical litigous american scum.

[SARGE]

I think it's a crock of shit.

In both my crashes the frame would have been put under massive stress.

One was a head on at a closing speed of ~70 km/h and the other was "sunstrike" going a little quicker.

The frame on both bikes was straight and undamaged.

Looking at the break you can see that the lower half of it is a brittle or fast fracture whereas the top half looks more like a drawn fracture. This would indicate that the force was pushing the wheel forward and up, ie landing a wheelie too hard. If it had been cause under normal riding the wheel would be subjected to a rearward force, the fracture would begin at the top.

If it was a fatigue crack any engineer worth his salt could look at the metal break and determine the mode of failure. That was definitely a fast fracture.

Light alloys are brittle but tough, it would take a hell of a force to break it in that manner and when it goes it fails in an easily recognisable manner.

Typical litigous american scum.

wow.. an engineer with crashing experience...


im glad we have you here Ben.

[The_Dover]

The bill is in the mail.

[**R1**]

lol premo post Gav, id defend my bike to the end, just like all the gixer guys, you should all have a read of
http://www.micapeak.com/ its a great site for finding common problems with most models of bikes, my model R1 for example have shocking head set bearings, but if you want a laugh read the TL1000r reviews

[Fooman]

Looking at the break you can see that the lower half of it is a brittle or fast fracture whereas the top half looks more like a drawn fracture. This would indicate that the force was pushing the wheel forward and up, ie landing a wheelie too hard. If it had been cause under normal riding the wheel would be subjected to a rearward force, the fracture would begin at the top.

If it was a fatigue crack any engineer worth his salt could look at the metal break and determine the mode of failure. That was definitely a fast fracture.

I had a look at the video, and couldn't make that out. However, a intergranular fracture ("brittle" appearance) at the bottom could due to brittle (fast) crack growth or fatigue (slow) crack growth. If the top half is a ductile fracture surface, the lower half is more likely to be fatigue rather than a brittle failure, as with a brittle failure the plastic zone at the crack tip will always be at a higher stress than the surrounding material and will normally propagate along at close to the speed of sound in the material until it fractures right through (google "SS Schenectady" for an example)

A fatigue crack will induce overload (either brittle or ductile) in the remaining material once the crack grows large enough over a number of cycles - which could be a matter of weeks or months - a fatigue crack is not really a fast fracture, unless it is low cycle fatigue in something cycling very fast.

The fact that the crack is in a relatively thin section also suggests that it is a fatigue crack rather than a brittle fracture.

Light alloys are brittle but tough, it would take a hell of a force to break it in that manner and when it goes it fails in an easily recognisable manner.

I think you mean "low ductility, but strong", as by definition if a material has a low fracture toughness it is defined as being brittle! Also most aluminium castings have some ductility, and will fail in a ductile manner, rather than a brittle manner, albeit at low ductility.

If there was a hole in the frame at the point indicated, then it is likely that it caused a stress concentration, which probably initiated a fatigue crack which grew during "normal" use (i.e. the odd mono) until the final rupture. But I would want to see the fracture surface in more detail before sticking to that.

I too call shenanigans on 25 mph (he even said 20 on the original interview).

FM

[The_Dover]

I had a look at the video, and couldn't make that out. However, a transgranular fracture ("brittle" appearance) at the bottom could due to brittle (fast) crack growth or fatigue (slow) crack growth. If the top half is a ductile fracture surface, the lower half is more likely to be fatigue rather than a brittle failure, as with a brittle failure the plastic zone at the crack tip will always be at a higher stress than the surrounding material and will normally propagate along at close to the speed of sound in the material until it fractures right through (google "SS Schenectady" for an example)

A fatigue crack will induce overload (either brittle or ductile) in the remaining material once the crack grows large enough over a number of cycles - which could be a matter of weeks or months - a fatigue crack is not really a fast fracture, unless it is low cycle fatigue in something cycling very fast.

The fact that the crack is in a relatively thin section also suggests that it is a fatigue crack rather than a brittle fracture.



I think you mean "low ductility, but strong", as by definition if a material has a low fracture toughness it is defined as being brittle! Also most aluminium castings have some ductility, and will fail in a ductile manner, rather than a brittle manner, albeit at low ductility.

If there was a hole in the frame at the point indicated, then it is likely that it caused a stress concentration, which probably initiated a fatigue crack which grew during "normal" use (i.e. the odd mono) until the final rupture. But I would want to see the fracture surface in more detail before sticking to that.

I too call shenanigans on 25 mph (he even said 20 on the original interview).

FM

I'd like to see some clear, close ups of the frame to make a better judgement but it would be easy to identify whether it was caused by a fatigue failure or not.

[Crasherfromwayback]

And the fucking sifter should be 'outed' as a queer cunt.....unless you're run over by another vehicle, how do you get to stay 7 days in intensive care at 25kph?
Severely bruised ego?
At least it'll match his arse.....

[thehollowmen]

How far he or the bike slid would be a product of momentum. 25mph wouldn't generate enough momentum to carry the bike that far. Regardless, it's how far he travelled, not the bike, that's in question here.

Yes and no. We've also got to think that he wasn't traveling on tyres.. he was traveling on the exhast system. That's what caused the gouges in the road. Lot less friction there and that would just slide and skip. I've seen a trailer pulled upside down and that didn't look like it had much sticking it to the concrete. I think the bike could have travelled to the grass no problems.

If he was a trained rider he would have used the rear brake but... it looks like he was too green for it.

If he was doing wheelies previously I could expect that frame damage pattern, like Dover says. May have taken this long for it to fracture the whole way through. And that would explain his half of the story. And Suzuki's half of the story.