Crack in the frame

[michael parris heuberger]

That must have taken some doing to crack as shown.
Personally that would bother me.
I would have that welded by a welder certified in accordance with AWSD 1.2 2007.

Hi. you have to make sure that the frame is not bent or twisted. Than you can have it welded or cut it out. I am having my brace cut out as I will be using a 3 inch charge pipe up through the left ram air duct, I will also have to cut a 3 1/8 inch hole as the duct is to small for the charge pipe. there will be 4 mods to the frame shot neck cut out braces hole for the charge pipe and moving the swingarm pivot up 12mm.

 

[JeffSyh]

@GioAbr

hard hard truth in my view
but this frame is scrap and only for the scrap box

get an other one and ....

I personally wouldnt I'd get it checked and welded before even thinking about replacing its (lots of amazing welders out there that fix and build far more important things than bike frames). Replacing is a pricey option if it was just a bad weld from factory that cracked out which is very possible.

 

[ROADTOAD1340]

Maybe I am being paranoid , but honestly , to crack even there it somehow must have had some force to do that . I imagine those side frame motor mount sections and all rear long bolts were bolted to a motor and taking into account the substantial perimeter frame rails , the bike might have had a front impact that the front end fork / wheel etc. might have absorbed most of force , but still might have effected the frame some . I would find a good frame straightener , fit the motor and swingarm / rear wheel , then get it checked . Then if fixable , go about getting welded .
If not good check result , you might have to bite the bullet and get another .

 

[Mythos]

Seen a lot of drag racers cut that out to save weight.

Damn that's drastic but I might do that some day. Upon a casual viewing, I'd agree, that thing doesn't do anything but add weight unless the bike crashes. Then again, I've recently learned weight loss mods don't help a lot if the bike does crash. Eh-- take your choice, a lil faster and lighter or a lil slower and better able to take a butt whoopin in a crash.

 

[Mythos]

If not good check result , you might have to bite the bullet and get another .

I haven't looked at the price of a new frame for a busa but my other bike was $3000 just for the tail. If he gets a new frame, probably might as well get a new bike.

 

[ROADTOAD1340]

I haven't looked at the price of a new frame for a busa but my other bike was $3000 just for the tail. If he gets a new frame, probably might as well get a new bike.

Guessing that would be best , another bike .. The second hand frame market is what got him here , trying there again will be pretty sus at best , but yeah , brand new would be out of the question for most anyone to fork $ out .

 

[Berlin Germany]

I personally wouldnt I'd get it checked and welded before even thinking about replacing its (lots of amazing welders out there that fix and build far more important things than bike frames). Replacing is a pricey option if it was just a bad weld from factory that cracked out which is very possible.

sorry jeff

watch the 1st pic again - the crack is directly beside the welding (as usual - a weld never crack - only the material arround))
and that tells me that somebody has mounted the engine the wrong way (and perhaps with wrong torques)
or a crash / accident happend with the pre-owner and the bike and a pre-crack happend which now expanded to its worst situation now.

no - thanks - in my view get away with such a frame and put it into scrap corner

one´s health - and in worst his life - depends on a 100% intact frame

a new, pre-owned frame isnt´t that expensive (i suppose around 600-800 bucks) than an accident by an again broken frame beside a new wwelding.
and the move of all parts to the new frame is oly a question of time - i guess with sufficiant experiances with the busa (+ manual 4 torques & installation sequences) it only needs around a loooooooong weekend (fri-sun)
plus some 2 hours or so to get the new frame (bike) street legal again.

 

[Mathewrussell52]

Damn that's drastic but I might do that some day. Upon a casual viewing, I'd agree, that thing doesn't do anything but add weight unless the bike crashes. Then again, I've recently learned weight loss mods don't help a lot if the bike does crash. Eh-- take your choice, a lil faster and lighter or a lil slower and better able to take a butt whoopin in a crash.

@Bigboy Busa2 @ColdBusa look at their builds it is cut out. I believe its standard in the race world and they are going faster in 1/4 mile than most of us will ever go. If it was me i wouldn’t mess with it or just cut it out.

 

[JeffSyh]

@Berlin Germany to me the crack looks like where there would be undercutting when welded from the factory (undercutting is when a weld isn't filled in properly and the edges of the weld are lower than the material it is an actual failed weld for reasons of cracking out in the future) the picture is hard to tell though.

 

[Got-Busa?]

Can you post more pics of the bike?

Anymore damage or scratches of any kind under fairings? That is a very odd place for the frame to crack so something weird is going on if it hasn't been previously wrecked.

 

[Berlin Germany]

Who knows how long it's been like that. (...)

open the pic, enlarge it a bit and you´ll see that in the crack´s surfaces is nothing to find like dust or so

the crack is "fresh/new" and not older than some days - 2 weeks.

otherwise the crack surfaces would be no mre that "shiny silver" like they are.

(...) I'd be very VERY careful about which shop I'd let completely disassemble and reassemble my bike though. (...)

if one has a normal experiance / mechanical handicraft in screwing, the job can be done by himself - no need to join any workshop .
what one needs is the manual, some fitting torque wrenches and some metric wrenches / hex ratchet nuts and a garage (or so) to leave the parts inside open around.

and @JeffSyh

pls. believe me - i´m a professional welder with o2 & acetone by my former job as a craftsman in central heating (welded tons ´n tons of steel pipes) plus lots of exp. in tig welding (hand-eye coordination is very similar / up to equal)

and i have seen in the last 40 years more than only one broken / cracked welding so i´m 100% sure that this pipe itself cracked beside the weld.