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Post Info TOPIC: Cracked joint to top rear subframe weld


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Cracked joint to top rear subframe weld
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Yesterday afternoon I noticed that one of the original frame welds had a stress fracture, resulting in almost total separation of the joint.  Metal is a bit thin for an arc welder with 2.5mm electrode, but managed with a bit of skill on low current and just overdid the weld to make sure it was stronger than necessary.  Hopefully this is of interest to someone, either with similar problems or just a note to check your frames' condition every now and again - they aren't particularly strong or well designed in truth.....

 



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Guru

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Yup, that's one of the weak spots! The other main one (two) is where the loop of the rear sub frame meets the rest of the frame (by the removable strut on the left, and above the exhaust bracket on the right.)
Welcome to the forum!
Ride safe,
Simon

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Thanks Simon, I guess I just appeared out of nowhere and posted a close up picture of a frame weld on a public forum - what a weirdo. 

By way of introduction then, I am a RAID model owner, imported 1994 edition, had the bike 4 years or so.  Still running with nearly all original parts including steel swing arm, working digital speedo etc.  I like to keep my bike a bit muddy and scruffy looking, but with all operational parts working perfectly.

There are other things I could have posted previously, such as a digital speedo hall sensor fix for £2.99, corroded connectors found for digital speedo, but good information on these topics is already here. 

I don't find the TTR a problemetic bike to maintain, considering the abuse it gets off road.  The only real problems I have with the basic design are a lack of any waterproofing effort with numerous electrical connectors and handlebar switches, plus the curious droopy exhaust route (to allow a tiny bit of water to collect rather than enter the cylinder I assume?) ... and massive weight of the stock silencer.

Anyway, glad to be here, off to mid-Wales in a couple of weeks to explore for a few days....if the frame holds up.

 



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Super Guru

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Thanks reminded me to check mine again 



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A very good rod to use for frame repairs is a dissimilar rod . They are expensive but give a great rust proof weld .



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