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Waaahhh...my motorcycle broke! (Rear reaction rod coupler)

Generic Saint

Just got it firing!
Joined
Jan 14, 2009
Messages
4
Location
L.A.
So about 10K miles in on my Griso, my rear suspension reaction rod broke and sheared off the rear bolt near the wheel. I replaced the reaction rod with a billet one.

Now at 34K and the front bolt and coupler that attaches to frame blew out! Ugh!

See pics below.

What are my options and what's going on here?

Thanks,
Dan
 

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Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

That is serious frame damage. That won't be easy to repair. I would think it would take some serious force to damage the frame like that. Are you pulling wheelies or something?
 
Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

I'm guessing the nut worked lose and fell off, allowing the bolt to work out until it cleared the inside bracket. That concentrated all the forces on the outside plate. It would also torque the outside bracket causing it to bend outward until it failed.

You might want to wash that sucker every once in a while. It helps you spot lose stuff that might cause problems.
 
Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

It sure looks like the bolt worked it's way loose and caused all of the damage. A good welder can repair the frame, and I have two black Rossopuro CARC bars on the shelf if you need one sooner then later.
I witnessed the same damage on our friend Andrea's Stelvio(2Stelvio.it).
 
Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

Stevie said:
I'm guessing the nut worked lose and fell off, allowing the bolt to work out until it cleared the inside bracket. That concentrated all the forces on the outside plate. It would also torque the outside bracket causing it to bend outward until it failed.

You might want to wash that sucker every once in a while. It helps you spot lose stuff that might cause problems.

I wish I was doing wheelies!

Stevie, I can see that what you suggest caused the complete failure, but if you look at the picture the other intact bolt hole has also been significantly stretched into an oval. So I'm wondering why there was so much stress on the joint in the first place.

I think this bolt sheared off like the bolt on the other end did (I found the sheared bolt still in the rod) but why?

GT Rx, can you recommend anyone who could repair this?
 
Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

If the bolt is lose it will work back and forth in the frame holes causing them to enlongate.
 
Re: Waaahhh...my motorcycle broke! (Rear reaction rod couple

Thanks for posting this, as I never thought to check that connection.

And how does she ride with the reaction bar removed?
 
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