Cracked a Kawi frame?

SWMX
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SWMX
Edited Date/Time 11/27/2022 4:05pm
2018 250f Cracked at the foot peg mounts. 35 hours on a crank up build..

235 on the chassis. Anyone ever seen a crack in this area?That being said, anyone got a frame laying around? ): dealer is no help. Dad is a killer welder so that is an option but i don’t like the idea of riding a re welded aluminum frame.. Anyones experience is appreciated.
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Bearuno
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Bearuno 11/9/2022 10:59pm
11/9/2022 10:59pm
I do quite a few Aluminium (well, all types of ) frame repairs, but that's the first one like that I've seen on a KXF.

And, it looks to be quite a 'deep' failure - it's likely through from the top of the casting, way down through it, Not just along the surface. It looks to be all the way through it, past the threaded bolt hole Dizzy Shocked

Repairable? I daresay.

Advisable? - perhaps Not.

But, you'd want to try to work out what has brought it on. . Something often much easier said than done.

If one side is damaged like that, the other side may well be on the way to such a failure.

If a repair was to be done, it's wise to leave the frame unused for a period of time, after the repair - the (generally, though a mates testings have revealed a wild array of mixings of different alloys in most frames) 7000 series alloys used by the Japanese factories needs a bit of time for ageing / stabilizing after weldment.
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FGR01
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FGR01 11/10/2022 7:16am
11/10/2022 7:16am
Not a welder here... but to me that looks pretty "career ending" for that frame. If it was to be repaired, I'd say, I hope you like the pegs in the upper hole. Because I'd think you'd need to completely fill/eliminate that lower threaded hole with weld and not even attempt to re-drill and re-tap it if you're going to ride that frame.
Moto520
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Moto520 11/10/2022 7:54am
11/10/2022 7:54am
Not ideal but i would move the pegs to the top position after gettting it welded. I actually think you'd be fine with it like that for awhile but I would replace the whole damn thing.
sandman768
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sandman768 11/10/2022 7:55am
11/10/2022 7:55am
If there is one good thing about 4 strokes… when they blow up, they are usually parted out…should not have a problem finding a good roller or frame ……
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Moto520
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Moto520 11/10/2022 7:57am
11/10/2022 7:57am
Will a 2015 frame work? what years frames will be a direct replacement?
SWMX
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SWMX 11/10/2022 10:48am
11/10/2022 10:48am
Moto520 wrote:
Will a 2015 frame work? what years frames will be a direct replacement?
As far as i know 17-20 is the same frame, im trying to get in touch with some PC guys to see if they have any more info on this. I have found one frame online for $1400 ): not ideal
Rickyisms 11/10/2022 12:14pm
11/10/2022 12:14pm
My friends 2011 did the same thing. Believe it or not he still rides it. I’ve voiced my opinion on it and I would never do it but to each their own.
SWMX
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SWMX 11/10/2022 12:39pm
11/10/2022 12:39pm
My dad always says when there’s a failure ask yourself what you did last.

When i framed the bike less than 35 hours ago is when i dropped pegs for the first time in the chassis’ life. Wonder if it stretched itself to a spot, once the pegs moved it had to stretch even more and couldn’t do it therefore it gave.

Less than 10 hours ago I serviced linkage and swingarm bearings for the first time since the rebuild. I spent good money on torque wrenches so everything is torque to, or intentionally just under spec.
mx317
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mx317 11/10/2022 1:32pm
11/10/2022 1:32pm
I'd be checking eBay for a replacement
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Rider 5280
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Rider 5280 11/10/2022 4:09pm
11/10/2022 4:09pm Edited Date/Time 11/10/2022 10:30pm
I'd say you now know, for your type of riding, a 2018 KX250F frame lasts less than 235 hours. Good data point!

Now ... go get a replacement and polish up that desk ornament - it's a cool one!
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mwssquad827
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mwssquad827 11/26/2022 4:30pm
11/26/2022 4:30pm
This is on the local Facebook marketplace. Don’t know if it will work or not Facebook
MxAddic
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MxAddic 11/26/2022 5:02pm
11/26/2022 5:02pm
Rider 5280 wrote:
I'd say you now know, for your type of riding, a 2018 KX250F frame lasts less than 235 hours. Good data point! Now ... go get...
I'd say you now know, for your type of riding, a 2018 KX250F frame lasts less than 235 hours. Good data point!

Now ... go get a replacement and polish up that desk ornament - it's a cool one!
I can tell you exactly what caused this. It was not 235 hours and the OP will not like it one bit.
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mxracer666
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mxracer666 11/26/2022 5:44pm
11/26/2022 5:44pm
Rider 5280 wrote:
I'd say you now know, for your type of riding, a 2018 KX250F frame lasts less than 235 hours. Good data point! Now ... go get...
I'd say you now know, for your type of riding, a 2018 KX250F frame lasts less than 235 hours. Good data point!

Now ... go get a replacement and polish up that desk ornament - it's a cool one!
MxAddic wrote:
I can tell you exactly what caused this. It was not 235 hours and the OP will not like it one bit.
Lets hear it - why the secret?
MxAddic
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MxAddic 11/26/2022 5:53pm
11/26/2022 5:53pm
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What happened is there is 2 sets of holes in the mount and they used one from the upper and one from the lower. The frame got splayed by undue side pressure. Notice the galled threads.
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DynoDan22
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DynoDan22 11/26/2022 5:53pm
11/26/2022 5:53pm
Looks like the threads by the crack were plugged up a little with mud or corrosion and when he moved the foot peg bracket to the lower position (new set of holes) the bolt was binding and cracked the frame. I’m assuming that’s what he was referring to.
MxAddic
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MxAddic 11/26/2022 6:03pm
11/26/2022 6:03pm Edited Date/Time 11/26/2022 6:50pm
DynoDan22 wrote:
Looks like the threads by the crack were plugged up a little with mud or corrosion and when he moved the foot peg bracket to the...
Looks like the threads by the crack were plugged up a little with mud or corrosion and when he moved the foot peg bracket to the lower position (new set of holes) the bolt was binding and cracked the frame. I’m assuming that’s what he was referring to.
No, the bike was ridden with a side load on the holes... Due to the fact of it being the wrong hole. Hole 1 and 2 where used. Like I said before 1 and 3 or 2 and 4 are required. Good thing dad is a welder and it looks like he was going for the upper position so welding that puppy up won't be an issue needing hole 1 and 3.
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dkurtd
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dkurtd 11/26/2022 6:38pm
11/26/2022 6:38pm
DynoDan22 wrote:
Looks like the threads by the crack were plugged up a little with mud or corrosion and when he moved the foot peg bracket to the...
Looks like the threads by the crack were plugged up a little with mud or corrosion and when he moved the foot peg bracket to the lower position (new set of holes) the bolt was binding and cracked the frame. I’m assuming that’s what he was referring to.
MxAddic wrote:
No, the bike was ridden with a side load on the holes... Due to the fact of it being the wrong hole. Hole 1 and 2...
No, the bike was ridden with a side load on the holes... Due to the fact of it being the wrong hole. Hole 1 and 2 where used. Like I said before 1 and 3 or 2 and 4 are required. Good thing dad is a welder and it looks like he was going for the upper position so welding that puppy up won't be an issue needing hole 1 and 3.
The brackets come with two different size bolts so if they used 1 and 2 then they would have had to swap out hardware. Not saying they didn't but that's what it would have taken to validate your theory.
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RGaede
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RGaede 11/26/2022 9:53pm
11/26/2022 9:53pm
#1 and #2 take an m10 bolt. #3 and #4 take an m8. Definitely different sizes.



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SWMX
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SWMX 11/27/2022 5:30am
11/27/2022 5:30am
MxAddic wrote:
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What...
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What happened is there is 2 sets of holes in the mount and they used one from the upper and one from the lower. The frame got splayed by undue side pressure. Notice the galled threads.
I can assure you, this did not happen. As stated above the hardware is different & i did not change that.
I’d have to imagine Kawi did that as a “fool proof” system.

This is my 5th Kawi with adjustable pegs and I am well aware of how the pegs mount.

Interesting theory though!
SWMX
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SWMX 11/27/2022 5:32am
11/27/2022 5:32am
dkurtd wrote:
The brackets come with two different size bolts so if they used 1 and 2 then they would have had to swap out hardware. Not saying...
The brackets come with two different size bolts so if they used 1 and 2 then they would have had to swap out hardware. Not saying they didn't but that's what it would have taken to validate your theory.
Some sense with this man here!
SWMX
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SWMX 11/27/2022 5:43am
11/27/2022 5:43am
For those interested… I know without a frame jig, measurements are loose. However… New frame is in and i decided to take some measurements just for shits and giggles to see if there was a difference.

Cracked frame is roughly 1mm tighter at the swing arm pivot.
Shock tower to lower cross section, roughly 1.5mm longer.

As I said, I know without doing this digitally or on a jig everything is loose. Take it for what you will.
MxAddic
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MxAddic 11/27/2022 6:53am
11/27/2022 6:53am
MxAddic wrote:
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What...
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What happened is there is 2 sets of holes in the mount and they used one from the upper and one from the lower. The frame got splayed by undue side pressure. Notice the galled threads.
SWMX wrote:
I can assure you, this did not happen. As stated above the hardware is different & i did not change that. I’d have to imagine Kawi...
I can assure you, this did not happen. As stated above the hardware is different & i did not change that.
I’d have to imagine Kawi did that as a “fool proof” system.

This is my 5th Kawi with adjustable pegs and I am well aware of how the pegs mount.

Interesting theory though!


Sure looks like somebody has been in the top holes but maybe the sky is not blue.



You are the one buying a frame after all.




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Sandusky26
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Sandusky26 11/27/2022 1:25pm
11/27/2022 1:25pm
MxAddic wrote:
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What...
Improper foot peg mount assembly. The correct mounting is the first and third hole for the upper and second and fourth for the lower position. What happened is there is 2 sets of holes in the mount and they used one from the upper and one from the lower. The frame got splayed by undue side pressure. Notice the galled threads.
SWMX wrote:
I can assure you, this did not happen. As stated above the hardware is different & i did not change that. I’d have to imagine Kawi...
I can assure you, this did not happen. As stated above the hardware is different & i did not change that.
I’d have to imagine Kawi did that as a “fool proof” system.

This is my 5th Kawi with adjustable pegs and I am well aware of how the pegs mount.

Interesting theory though!
MxAddic wrote:
[img]https://p.vitalmx.com/photos/forums/2022/11/27/578566/s1200_IMG_0437_1.jpg[/img] Sure looks like somebody has been in the top holes but maybe the sky is not blue. [img]https://p.vitalmx.com/photos/forums/2022/11/27/578567/s1200_s1200_0D05C602_294B_4A24_BB34_DB0AB7D46255.jpg[/img] You are the one buying a frame...


Sure looks like somebody has been in the top holes but maybe the sky is not blue.



You are the one buying a frame after all.




If you delete your post only a few of use will know you're a dumbass.
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MxAddic
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MxAddic 11/27/2022 3:56pm
11/27/2022 3:56pm Edited Date/Time 11/27/2022 4:05pm
Sandusky26 wrote:
If you delete your post only a few of use will know you're a dumbass.
Gee, being one of "USE" and not installing you foot pegs correctly causing your frame to crack means your not a dumbass? Got it!
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SWMX
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SWMX 12/10/2022 5:41am
12/10/2022 5:41am
MxAddic wrote:
Gee, being one of "USE" and not installing you foot pegs correctly causing your frame to crack means your not a dumbass? Got it!

I challenge you to mount the pegs in the fashion you’re thinking I did, while retaining all hardware making no modifications. 

 

You simply cannot install the mount in holes 1&2, fucks sake mate give it a rest. 

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Bruce372
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Bruce372 12/10/2022 10:09am
12/10/2022 10:09am

Oh my, the wrong hole??? LOL.

Anyhow,  has anyone seen a dude on youtube called Hambini? He is a nutty engineering dude that used to work on air crash investigations.

 

An avid cyclist, he gets all these high end bicycle components and chops them up and rips the quality of their poor work. You should sent the frame to him. It's actually amusing watching him.

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MxAddic
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MxAddic 12/12/2022 4:35am
12/12/2022 4:35am Edited Date/Time 12/12/2022 4:46am
SWMX wrote:
I challenge you to mount the pegs in the fashion you’re thinking I did, while retaining all hardware making no modifications.    You simply cannot install...

I challenge you to mount the pegs in the fashion you’re thinking I did, while retaining all hardware making no modifications. 

 

You simply cannot install the mount in holes 1&2, fucks sake mate give it a rest. 

sure bro...

Only problem you have is your story does not match your picture.

 

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soggy
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soggy 12/12/2022 6:18am
12/12/2022 6:18am
MxAddic wrote:

sure bro...

Only problem you have is your story does not match your picture.

 

Dude wtf is your problem. 

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Moto520
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Moto520 12/12/2022 8:20am
12/12/2022 8:20am

Guys....ignore Mxaddict....he's just screwing around and baiting you all in.  

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MxAddic
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MxAddic 12/12/2022 9:03am
12/12/2022 9:03am
soggy wrote:

Dude wtf is your problem. 

Guy asked about his frame. I said I knew but he wouldn't like it. The board HAD to know so I reluctantly opined because I knew this would happen. Now your involved. Who has the problem?

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