At least it is not may

[liamthom]

with winter coming i thought now would be a good time to do a few things on my 2011 xc 250. found out my linkage is a bit more than cracked. I was a bit sad at first but i know i will get it fixed for free so that's good.

Just thought I should ask what could cause this?

Liam

 

[desertgasser300]

with winter coming i thought now would be a good time to do a few things on my 2011 ex 250. found out my linkage is a bit more than cracked. I was a bit sad at first but i know i will get it fixed for free so that's good.

Just thought I should ask what could cause this?

Liam

With the rust on the second picture, looks like it took a good hit weakened that piece causing more stress on the rest of the linkage.

 

[liamthom]

that's what i was thinking, also with the rust make me believe that it was broken for a some time

 

[memphis2857]

Looks like maybe the suspension bottomed really hard (maybe more than once). I have been seeing several broken frame threads showing up here. Kind of makes me wonder?

 

[liamthom]

Looks like maybe the suspension bottomed really hard (maybe more than once). I have been seeing several broken frame threads showing up here. Kind of makes me wonder?

I have a 2011, witch was the first year with the new style of frame used on the new bikes. so after a few competitions they would have found the issues

 

[memphis2857]

I have a 2011, witch was the first year with the new style of frame used on the new bikes. so after a few competitions they would have found the issues

Not necessarily. You see I spent three years in college studying metals and welding and then ten years welding and fabricating. What these frames could be experiencing is metal fatigue. If the steel used is of a lower grade or if the frames aren't gusseted and designed to distribute loads properly the stress points could weaken over time. It could happen right away or it could take ten years for problems to show. Also race teams that abuse the bikes the most only use a bike for one season and then it is passed on. So they most likely aren't going to discover these problems and the slower riders don't ride hard enough to ever discover the issue or it takes 4 or 5 years for it to show. Just a thought


Sent from my iPhone using Tapatalk

 

[liamthom]

If the steel used is of a lower grade or if the frames aren't gusseted and designed to distribute loads properly the stress points could weaken over time. It could happen right away or it could take ten years for problems to show. Also race teams that abuse the bikes the most only use a bike for one season and then it is passed on. So they most likely aren't going to discover these problems and the slower riders don't ride hard enough to ever discover the issue or it takes 4 or 5 years for it to show. Just a thought

on my bike i feel that the bracket that was welded to the frame was way to thin to support the bike, but on the newer bike (I was looking at 2015) Is MUCH thicker, also i have seen other places on this forum that GG's aluminum casting skills are not the best

You can see the bracket, it is much thicker:
http://www.gasgasmotos.es/image/motos/gg_ec250_racing_006.jpg

 

[iamovru]

Do you remember hitting something really hard?

 

[liamthom]

Do you remember hitting something really hard?

i cant remember landing on anything, just running into them. though apparently when i first had the bike on whoops i was bottoming out a lot and there where tire marks on the rear fender when i got it used.

 

[twowheels]

The' 11s were the last year with the old linkage. Yours isn't the first to break in that area, and the factory used to sell upgraded aluminum hangers as well.
Most race teams replace frames on a regular basis.

 

[liamthom]

The' 11s were the last year with the old linkage. Yours isn't the first to break in that area, and the factory used to sell upgraded aluminum hangers as well.
Most race teams replace frames on a regular basis.

After a little thought I realized i should not be upset, the replacement linkage is $30 and i am going to get the frame repaired for free also if i did not notice this now i would have had a busted bike in the middle of Fredrick's north loop.

 

[twowheels]

After a little thought I realized i should not be upset, the replacement linkage is $30 and i am going to get the frame repaired for free also if i did not notice this now i would have had a busted bike in the middle of Fredrick's north loop.

Have a good hard look at the other tab as well, and make sure you get everything jigged in the proper place before welding or you'll have continued problems.

As an aside the old linkage and new linkage are completely different geometries, so while the piece on your frame may have cracked off looking at the 2012+ frame is comparing apples to oranges.

 

[liamthom]

Have a good hard look at the other tab as well, and make sure you get everything jigged in the proper place before welding or you'll have continued problems.

As an aside the old linkage and new linkage are completely different geometries, so while the piece on your frame may have cracked off looking at the 2012+ frame is comparing apples to oranges.

For the linkage i was just Google the part number and came across a site with it in stock, and with the bike in pieces i will do a close look at every thing and make sure there is no damage to other things.

 

[Zman]

On a positive note, it looks like a reasonably easy problem to fix.

 

[liamthom]

On a positive note, it looks like a reasonably easy problem to fix.

yes, except when it caused a trip to the ER