Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

my poor bike

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DSPMOTO:
its been a couple of weeks since the crash. really dont know why this happen. i have been riding the bike for just over a year  as you can see from my other posts on here. but here is my story on what i remember from the day. i was at a loretta lynn area quailifier  , decided i was going to race my two stroke cause i hadn't rode in a couple weeks and the 450 would have taken the fun out of the day. Got through my first two moto's smooth. Three laps in on my 2nd moto of open prosport me and a buddy were having a good battle. came around to hit the 90ft table just like i would have on any other lap. everything was going perfect until i landed. that is all i remember. my buddy that was less than a sec behind me said that nothing went wrong. he said as soon as my wheels touched the ground i was going over the bars! the last thing that went through my head was, Oh f**k she locked up and I'm going over the bars. turns out the motor didn't lock up but i did indeed go over the bars. i was knocked out cold. guess i ended up laying there for 3 laps until i was able to convince the paramedics that i was ok just got knocked out. after i got back to the truck it took me a good hour to realize what had really happen. when they finally got my bike up off the track and brought it back to me camp thats when i i realized that all my friend were not kidding about my frame breaking in half. i got very very lucky to be able to walk away from the crash with only one scratch! the next couple days after were rough, felt like i had been hit by a truck. so now i have to start all over again. thats the most upsetting thing about it all. i had just finalized everything on the bike. o well , cant wait to build a new one! :mrgreen:

sandblaster:
Holy smokes brother, your one lucky man...
Glad your ok.
Would it be possible to post some close up pics of your head stay area?
It might help save someones life..

Motorrad:
Looks like it broke at your welds on the downtube?

jBernard:
ouch. good to hear your OK buddy.

Odd, check out the headstay mount, bracket welded to frame is beefy enough, but the plates used to attach head to bracket look like 3/16" alum. thin stuff. and it ISNT broken doesnt appear. thats surprising.
Like said above looks like broke the rails right below the yoke then just peeled it straight back and broke the main spars.
This is an interesting incident where it looks like the engine forces on landing didnt have much impact on the fracture, but mainly the rigidity of the chassis itself when landing.

cmotodad:
Did you notice any excess vibration? When we had cracks in our CR500AF, it started vibrating more than normal. Had one crack all the way around the tube just below the weld into the Y.

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