Is this the end for the Green Machine?! Edit 5/18: No!

Tom

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Aug 4, 2006
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1,064
I just noticed this today... I guess the frame couldn't take the engine. I wonder how long it had been like that before I noticed...
 

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bluegoatwoods

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Mar 23, 2008
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bummer...."Is this the end for the Green Machine?"

I'd say it looks like it. Sorry.
 
L

Large Filipino

Guest
That floating carb is cool.

I say time to check out flea markets and garage sales!

Or maybe it's time for a 4 stroke!

Yes. This is a sign.
 

boilerman420

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May 7, 2008
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Tom

I'm looking at the gap in the fracture.
If that gap is natural, and not enhanced for viewing,
It would suggest that the frame was stressed during
the welding process.
If you want to save the frame, you might consider
having a split sleeve welded over the fracture.
If the crack was purely due to the vibration and torque of the motor
that gap would be virually non-existent.
Personally i'd patch it. It's probably good for another 10-20k


-J.R.- :)
 

Tom

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Aug 4, 2006
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1,064
Wow, good eye! I did not increase the gap at all. It makes a little more sense now. I was thinking of doing the split-sleeve welding, I guess that makes the most sense now.

Tom

I'm looking at the gap in the fracture.
If that gap is natural, and not enhanced for viewing,
It would suggest that the frame was stressed during
the welding process.
If you want to save the frame, you might consider
having a split sleeve welded over the fracture.
If the crack was purely due to the vibration and torque of the motor
that gap would be virually non-existent.
Personally i'd patch it. It's probably good for another 10-20k


-J.R.- :)
 
S

Scottm

Guest
Good call boilerman. I was wondering how such a gap would appear. The factory used used a down tube that was too short. I'm curious Tom, where did your seat post stop in the tube, just above the fracture? It may not be relevant, but just wondering if it was a factor too.
Weld her up and get back on the road.
Just another thouht, is this bike you have had a collision with that lady in the truck? Could the impact have stressed the frame? Well I bet the forks would bend before the entire frame would. Hmm
 
K

kerf

Guest
Gap is probably from frame loading during the break not manufacturing. Pull it back and weld, weld, weld.
 

Tom

Active Member
Joined
Aug 4, 2006
Messages
1,064
Same bike as when I got my front tire run over by a truck. It doubt that played a substantial role though since it was pretty low speed and low impact.

Didn't even think about the seatpost. It is up a bit higher than the fracture though.

I think I'll try and "Save the Green Machine"
 

loquin

Active Member
Joined
Jan 11, 2008
Messages
2,214
Never a good thing when you see air through the frame... :(

Who knows why it happened. The initial welding can put enough stress on the frame to pull that much. The accident you had could have been the cause. You're just not going to know.

Now, the question I have is, do you WANT to pull it back into place before you weld with a split sleeve? I wouldn't think so. That would just restore the constant stress that was on that tube in the first place.
 
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