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Old 01-24-2013, 02:16 PM   #3321
clintnz
Trans-Global Chook Chaser
 
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Joined: May 2004
Location: Rotoiti, New Zealand
Oddometer: 3,303
So I'm about to make some new stronger pannier rails & a rear rack for the 640, will use 5/8 4130 tubing. First thing will be to machine up some mounting bushes from solid bar.

Now, I'm probably overthinking this but... the local steel store has 4140 I could use (& the few scraps needed won't cost much), or I have some plain mild steel on hand. Am I likely to get an appreciably stronger joint with the 4140 to 4130 (will TIG weld & post heat treat with the MAP torch if required) or is there not much in it?

Cheers
Clint
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