Snapped frame 2020 yz250F

Bearuno
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Bearuno 11/1/2020 12:22am
11/1/2020 12:22am Edited Date/Time 11/1/2020 12:27am
Can you expand on the "high speed crash"?

With a big enough impact, anything will break.

What other parts were damaged? A fork is a big lever on a frame, and I'd be very surprised if parts of it were not damaged. The wheel also.

The geometric rigidity of so many aluminium sections that are being made for frames, makes it almost inevitable that the failure point will be at the weld points, not matter what weld process / technique / filler or alloy grade / mix the frame components have.

The split rear section of the downtube really has me wanting to know of the impact(s) that brought about this failure. I don't know these frames that well, but I'm pretty sure there is no weld at that rearward split point. It's just so indicative of a Huge amount of force! Though, I could readily accept that the rider may have no recollection / a hazy / jumbled recollection of it. Blink

Whatever anyone thinks of this damage, if, as it seems, the rider has come out of the "high speed crash" in good health, he's been very lucky in his bad luck.
tek14
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tek14 11/1/2020 1:37am
11/1/2020 1:37am
Bearuno wrote:
Can you expand on the "high speed crash"? With a big enough impact, [i]anything [/i] will break. What other parts were damaged? A fork is a...
Can you expand on the "high speed crash"?

With a big enough impact, anything will break.

What other parts were damaged? A fork is a big lever on a frame, and I'd be very surprised if parts of it were not damaged. The wheel also.

The geometric rigidity of so many aluminium sections that are being made for frames, makes it almost inevitable that the failure point will be at the weld points, not matter what weld process / technique / filler or alloy grade / mix the frame components have.

The split rear section of the downtube really has me wanting to know of the impact(s) that brought about this failure. I don't know these frames that well, but I'm pretty sure there is no weld at that rearward split point. It's just so indicative of a Huge amount of force! Though, I could readily accept that the rider may have no recollection / a hazy / jumbled recollection of it. Blink

Whatever anyone thinks of this damage, if, as it seems, the rider has come out of the "high speed crash" in good health, he's been very lucky in his bad luck.
Wheelie boys hitting parked cars on side of road.. this happens.
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Radical
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Radical 11/1/2020 3:39am
11/1/2020 3:39am
A weld is not supposed to be the weak link. As someone else asked, it would be great to see pictures of the head tube and more pictures of the break from different angles.
Did it actually break on the weld, or just beyond it?
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RCF
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RCF 11/1/2020 6:58am
11/1/2020 6:58am
TommyHolls wrote:
Not one to post much in forums, however, I need some ideas on what to do here. I recently had a high speed crash on my...
Not one to post much in forums, however, I need some ideas on what to do here. I recently had a high speed crash on my 2020 YZ250f and the frame snapped at all three welds on the steering stem. I purchased the bike from Rock River Yamaha and they came back with nothing. Called customer service and got nothing. Clearly a manufacturing defect on the bike and I get shit happens but the customer service is an absolute joke. I've gotten no where and due to COVID I am not sure if production is slow or what but have not seen any frames available for sale. Overall, just curious if this has happened to someone and if it got covered or how they got it taken care of.

Thanks in advance.
You worded your complaint wrong , it should have been your frame snapped causing you to crash... as far as the guys ragging on KTM at least they stand behind their products and take care of their customers.
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BobbyLight
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BobbyLight 11/1/2020 7:27am
11/1/2020 7:27am
I know this doesn’t really apply to your situation, but didn’t the 14-15 have some frames crack at the headtube? I have a 16 so I always have watched it.
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kijen
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kijen 11/1/2020 7:52am
11/1/2020 7:52am
Sort of related, years ago at a race, kids were practicing starts in a field going up a hill, the kids were taking their turns and looping back in line, till one kid was special and did not loop around but came straight back down. Head on collision with my son, rm85 vs yz 85, ruined both their day and a few weeks, impact bent the frame around the head tube, forks trashed and of course the front wheel
, big hit for an 11yr old, suprised he would keep riding till this day. I did not ask yamaha for a new wheel, Smile


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Zycki11
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Zycki11 11/1/2020 8:17am
11/1/2020 8:17am
numbers wrote:
Almost every guy on here has no idea of what it takes to make a quality structural weld. Your gonna get bassed. I think Yamaha messed...
Almost every guy on here has no idea of what it takes to make a quality structural weld. Your gonna get bassed. I think Yamaha messed up. But I only weld navy boats together so what do I know.
Zycki11 wrote:
If Yamaha messed up, then they would have a series of frames from production with the same issues. It wouldn’t take a “high speed” crash to...
If Yamaha messed up, then they would have a series of frames from production with the same issues. It wouldn’t take a “high speed” crash to do it either. The welds are performed by machines and if they messed up (unlikely) they would see it on the numbers or the structure testing. You would see a recall.
Zesiger 112 wrote:
You would see a cover up until they were forced to make a recall.
A cover up? What do you think happens? In reality, the manufacturer is held to a standard. If X amount of units were defective then they are forced into making a recall.
2WheelsForTheMasses 11/1/2020 9:12am
11/1/2020 9:12am
Typical yamaha blues. Yamaha has more cracked frames than any other manufacture in the last 20 years by a long ways.

They need to stop worrying about adding power and start worrying about their QC and customer relations.
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profeshenal125 11/1/2020 9:24am
11/1/2020 9:24am
vansnxtweek489 wrote:
I guess I would like to hear what actually caused this.
My guess, over jumping the plateau at Aztalan Lake mills Wi. Much easier jump now, than yrs ago tho
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TbonesPop 11/1/2020 9:28am
11/1/2020 9:28am
Part it out, or find someone else parting out another bike with a blown engine that has a frame for sale. I parted out an 09 YZ450F several years ago and was shocked at how much money I got for everything. Almost as much as if it was perfectly running. Ya, its a pain in the ass, but the $$ made it worth it to me (I'm a cheap bastard).
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JM485
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JM485 11/1/2020 10:31am
11/1/2020 10:31am
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
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lostboy819 11/1/2020 11:24am
11/1/2020 11:24am
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
lol aint that the truth. Laughing and the guys who claim they know the most often know the least. They are not experts they just play one on Vital. Wink
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Piston Slap
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Piston Slap 11/1/2020 1:07pm
11/1/2020 1:07pm
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
What are you? Some super engineering guy?Tongue Smile
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seth505
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seth505 11/1/2020 2:11pm
11/1/2020 2:11pm
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
Agreed but at a glance nothing is even bent up it seems (seems being key word).
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Timo_2824
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Timo_2824 11/1/2020 4:23pm
11/1/2020 4:23pm
2WheelsForTheMasses wrote:
Typical yamaha blues. Yamaha has more cracked frames than any other manufacture in the last 20 years by a long ways. They need to stop worrying...
Typical yamaha blues. Yamaha has more cracked frames than any other manufacture in the last 20 years by a long ways.

They need to stop worrying about adding power and start worrying about their QC and customer relations.
You have the numbers on cracked frames, please share!
TeamGreen
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TeamGreen 11/1/2020 4:35pm
11/1/2020 4:35pm
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
I spent a few years of my career as an Aerospace Structures Inspector & Test Tech. I enjoyed getting to torture the living shit out of air and space structures. Airframes and the like "let go" in the most amazing and random ways when they see loads that are serioulsy more...indeed..."excessive"...compared to their intended design limitations.

Whan a motorcycle becomes a ballastic projectile, I don't hink most folks understand the loads it sees on impact or "re-entry".
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JM485
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JM485 11/1/2020 4:53pm
11/1/2020 4:53pm
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
seth505 wrote:
Agreed but at a glance nothing is even bent up it seems (seems being key word).
In reality, the only way to know if there was a defect would be to very closely inspect the area around the weld where the failure occurred. Regardless of circumstantial evidence, anyone claiming they can tell exactly what happened without seeing something like that in person is 100% full of it.

There are people who specialize in analyzing things like this, and I know just enough to understand they’ve forgotten more than I’ll likely ever know. I would venture to guess that there’s probably something odd about that frame for it to fail in that kind of spectacular fashion, but that’s far from my expertise and it would be totally irresponsible for me to say that for sure just looking at those pictures.
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seth505
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seth505 11/1/2020 9:15pm
11/1/2020 9:15pm
JM485 wrote:
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far...
I’ve got bad news about anyone claiming they can diagnose a weld failure based on the extremely detailed pictures we’ve gotten in this thread so far. . .
seth505 wrote:
Agreed but at a glance nothing is even bent up it seems (seems being key word).
JM485 wrote:
In reality, the only way to know if there was a defect would be to very closely inspect the area around the weld where the failure...
In reality, the only way to know if there was a defect would be to very closely inspect the area around the weld where the failure occurred. Regardless of circumstantial evidence, anyone claiming they can tell exactly what happened without seeing something like that in person is 100% full of it.

There are people who specialize in analyzing things like this, and I know just enough to understand they’ve forgotten more than I’ll likely ever know. I would venture to guess that there’s probably something odd about that frame for it to fail in that kind of spectacular fashion, but that’s far from my expertise and it would be totally irresponsible for me to say that for sure just looking at those pictures.
I’m no weld engineer myself but if a fixture we created let go at the welds it would be no bueno. Would be cool to know all the specific details in this mishap.
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