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gofer412

hole in swingarm....

12 posts in this topic

I have a 2012 wr450f. The bike has had a chain slider on it from day one and had the chain the correct tension (right around 2"). went to replace the chain slider and found a hole. anyone ever see anything like this? 

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Nope, not if everything was "good" as you said it was. Looks like odd scuffing on the side of the swingarm too below that worn area.

Edited by J_YZ2fittyF

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It's actually quite common, and there was another thread concerning that awhile ago on here. It started happening to my '11 but I caught it and cut a piece of galvanized sheet metal and applied it in underneath the chain slider. Yours looks pretty worn, but a competent welder may still be able to build enough off of that to fix it.

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That's caused by sand and dirt between the slider and swingarm. Every vibration in the chassis and movement of the slider slowly sands away the aluminum.

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but it's scrap metal now.

 

 

Noooooooo.......swingarm can be welded, as per my thread which is linked to in post #5

 

to the OP - make yourself a guard to fit between the slider and swing arm, as shown on page two of my thread, to save this happening to you again

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Nope, not if everything was "good" as you said it was. Looks like odd scuffing on the side of the swingarm too below that worn area.

 

Thats from a piece of rubber I zip tied to the subframe to keep the chain from eating it. I heard that people have had problems with the wr450f chains hitting the subframe ( like mine) Thats why im super observant of the chain tension but never seen/heard of a hole under the chain slider like this. 

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Thats from a piece of rubber I zip tied to the subframe to keep the chain from eating it. I heard that people have had problems with the wr450f chains hitting the subframe ( like mine) Thats why im super observant of the chain tension but never seen/heard of a hole under the chain slider like this. 

 

 

Very common

 

http://www.thumpertalk.com/topic/946340-picture-of-chain-slider-wear-to-swing-arm/

Edited by GuyGraham

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I have a 2012 wr450f. The bike has had a chain slider on it from day one and had the chain the correct tension (right around 2"). went to replace the chain slider and found a hole. anyone ever see anything like this?

Yes, this is quite common, I have a 14 that started making shiny spots from day one. I took the slider off, cleaned the area all up and put some red "rvt" silicon under and all the way around my slider, ran a nice bead around both sides. Now no dirt can get under it and wear on the swing arm.

A good friend has a 13 that he purchased after I got mine, laughed at what I did, then 6 mos later was calling me bitching about how his is starting to wear. He has now since done the same thing.

A sharp razor blade will take off the silicone easy enough once I need to replace the slider.

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