Help with shifting in Bridgewater

[briser]

Anybody in the Bridgewater area work on bikes 'on the side'?
Brought my bike into the LBS for spring setup and they found a small crack at the weld in the rear swing arm. I am looking into a new bike, but in the meantime my bike still needs some help because I am having minor shifting issues.
Because of the crack in the rear swing arm, the LBS won't do any work on the bike. I want to ride it while I work on getting my next bike.

 

[Patrick]

Any chance the crack is a cause of the problem?

Post up type of bike, maybe we could find a swing arm.

 

[w_b]

A crack in a weld on a swing arm could be a life safety/ personal injury cause. Along with not being willing to work on it, the LBS should have told you that. In case they didn’t, I just did. Recommend to not ride it till it’s sorted out.

and what @Patrick said

 

[briser]

It is an '09 Kona One 20. Finding a replacement swing arm would be dynamite! I went to Halters who is a Kona dealer, posted here in the Wanted section, and on Pink Bike; no luck.
I don't think the crack is causing the shifting issue. It is small and isn't flexing to cause the kind of shifting difficulty. If I knew more about how all the derailleur/gears worked I'd do my best to fix it.
Appreciate the safety warning. The LBS was crystal clear about all your points and then some.

 

[Patrick]

It is an '09 Kona One 20. Finding a replacement swing arm would be dynamite! I went to Halters who is a Kona dealer, posted here in the Wanted section, and on Pink Bike; no luck.
I don't think the crack is causing the shifting issue. It is small and isn't flexing to cause the kind of shifting difficulty. If I knew more about how all the derailleur/gears worked I'd do my best to fix it.
Appreciate the safety warning. The LBS was crystal clear about all your points and then some.

@Fire Lord Jim can find anything.

 

[serviceguy]

It is an '09 Kona One 20. Finding a replacement swing arm would be dynamite! I went to Halters who is a Kona dealer, posted here in the Wanted section, and on Pink Bike; no luck.
I don't think the crack is causing the shifting issue. It is small and isn't flexing to cause the kind of shifting difficulty. If I knew more about how all the derailleur/gears worked I'd do my best to fix it.
Appreciate the safety warning. The LBS was crystal clear about all your points and then some.

Can you get it welded? As it’s on a weld already it would be like new then.

 

[briser]

@Fire Lord Jim can find anything.

I'd love to be able to simply swap out the part. Given the age of the bike, input from the guy at Halter's, and no response on Pinkbike, I don't have much hope.
If this part can be found, I would love to get my hands on it!

 

[briser]

Can you get it welded? As it’s on a weld already it would be like new then.

When I brought that up at the LBS, he said that it then needs to be heat treated after the weld. I know less about welding than gears and derailleur so took his word for it.
Is that possible, just a quick weld?

 

[Patrick]

When I brought that up at the LBS, he said that it then needs to be heat treated after the weld. I know less about welding than gears and derailleur so took his word for it.
Is that possible, just a quick weld?

@Dave Taylor

I'm sure there Halters guys are correct. Dave might give you an idea on cost. He is one of our metal whisperers

 

[Dave Taylor]

I’ll fix it for ya.

 

[jdog]

It is an '09 Kona One 20. Finding a replacement swing arm would be dynamite! I went to Halters who is a Kona dealer, posted here in the Wanted section, and on Pink Bike; no luck.
I don't think the crack is causing the shifting issue. It is small and isn't flexing to cause the kind of shifting difficulty. If I knew more about how all the derailleur/gears worked I'd do my best to fix it.
Appreciate the safety warning. The LBS was crystal clear about all your points and then some.

I still haven’t heard back from Kona, but I’m not hopeful that they have frame parts from 2009.

 

[serviceguy]

When I brought that up at the LBS, he said that it then needs to be heat treated after the weld. I know less about welding than gears and derailleur so took his word for it.
Is that possible, just a quick weld?

I believe it depends on the alloy but generally speaking it will need to be heat treated. Luckily it’s a swing arm so you don’t need to heat treat the whole frame.

 

[sundaydoug]

Is the crack on the chainstay or the seatstay? If your bike is a One20 (and not a One20DL/Primo/Supreme according to the Kona website logic) it looks like you can actually order a replacement seatstay direct from Kona:

Seat Stays: Cross-country seat stay #15

Seat stay compatibility: - 2009-2010 One20…

konaparts.com

 

[briser]

Is the crack on the chainstay or the seatstay? If your bike is a One20 (and not a One20DL/Primo/Supreme according to the Kona website logic) it looks like you can actually order a replacement seatstay direct from Kona:

Seat Stays: Cross-country seat stay #15

Seat stay compatibility: - 2009-2010 One20…

konaparts.com

oooohhhhh was I excited there for a second. Sadly, it is not on the seat stay. Would've been the easiest $200 I ever spent! I appreciate you looking.