I have heard of the rear-triangle cracking at the same location on seperate warranty claims by the same person but this is way more serious and not fixable. Welding on top of a weld will not work. Replace front triangle and rebuild.
This failure resembles an "Ellsworth" frame type of failure I have seen on too many of their bikes.
less bark, more wag
Speaking of cracked frames - I have a 2001 KLEIN Adept Race FS with a small kink on the downtube - any recommendations?
I would try the guys at Now Bike and Fitness in Arden Hills. They have a great group of bike mechanics working there and they may be able to help you out.
Squirrel Fest Master of Ceremonies!
I bought it off these forums, from someone who ebayed it. The warranty specifies original owner only.
It is a 2001 model. The warranty on the Dakars is 5 years.
That said I will send an email and see what happens.
Why don't you just try and warrantee it? I've heard Jamis has decent customer service- I know several people who have broken rear triangles and successfully had them replaced for free under warrantee.
The welding engineers who used to work in my department would likely say "no way", but engineers are usually pretty conservative. I'd give it about a 50% chance of an apparently successful repair, and about a 10% chance of not cracking again within a year.
Note that a good portion of the crack is in the heat-affected zone, just adjacent to the weld. In welding theory, this is the weakest part of any welded joint or repair - not the weld itself.
This is a picture of a crack that developed recently in my older Jamis Dakar. Granted I bought the frame used so I don't know its history, but this happened(or at least appeared) after dorm commuting. According to the frame it's Kinesis 7005 Al. I am at least going to try to fix it, nothing to lose really. I have some 'people' who can do AL welding. Odds of success? Tips? Comments?
Chainstay pivot and BB featured in pic:
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