Welding On Alum. Subframe

9 replies to this topic
  • CJPilot

Posted October 09, 2003 - 03:35 PM


I was thinking of putting on some of the Baja Designs buddy pegs and they require you to weld a bracket on the subframe. I was talking with a guy at a local dealer and he said not to weld on the alum. because it will weaken the subframe. Last time I checked it looked like it was just standard square tube alloy. I don't see a problem but I don't want to mess up the subframe either. Can I tig weld it or not? :)

  • CoalPilot

Posted October 09, 2003 - 04:15 PM


are the orig pegs welded on? if so, someone or some machine had to do it. If your a pro at alum/tig then go for it. I'd feel better having it welded than drilling a hole. You could also custom fabricate a clamp to go around the square tube. JMO

  • Dirt4me

Posted October 10, 2003 - 08:34 AM


The key thing most forget when it comes to welding aluminum is the need for heat treating. If you weld it and don't heat treat it, it will fatigue, crack, and fail. Heat treat it properly, as the rest of the frame was done at the factory, and it will last for ever (at least longer than the engine anyway). Bolts make for easy and economical installation that also allow future removal if desired without weakening anything. Just a little advice from a 'train driver.'

  • CJPilot

Posted October 10, 2003 - 03:34 PM


Will most welding shops be able to heat treat it? I will probably have it professionally welded, my tig welding kind of sucks! Any other condiderations I should keep in mind?
Thanks for the input :)

  • loufish

Posted October 10, 2003 - 07:44 PM


No shop is going to try and "heat treat" an alum. subframe after welding. Some alum can't be heat treated, but can still be welded, others get their strength from "solution" heat treating, that is they use a chemical bath. I haven't seen the brkts you want to add, but I wouldn't worry about the heat treat aspect of you project. Does anybody know what alum is used for the subframe? 6061 ?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • CJPilot

Posted October 10, 2003 - 08:41 PM


At the most I have to run a 3inch bead to put them on. I don't think there is going to be a problem. I don't even think that there will be much heat transfer to the main structure. I'm going to quit worrying about it and just do it. They wouldn't make weld on brackets for alum if they degraded the strength of the structure they were being attached to. My 2 cents anyway. I just thought I'd check first. We'll see how it comes out

  • AzMtnThumper

Posted October 11, 2003 - 09:24 AM


I think four strokes only has some foot pegs that clamp onto the swingarm, avoiding the welding altogether. Just a thought. :)

  • CJPilot

Posted October 11, 2003 - 05:47 PM


I'll check it out! That would be great if I could find something that wasn't permanant. Thanks :)

  • Dirt4me

Posted October 11, 2003 - 09:36 PM


They wouldn't make weld on brackets for alum if they degraded the strength of the structure they were being attached to.

They let Ford Explorers on to the freeway don't they?! :)

  • CJPilot

Posted October 12, 2003 - 10:31 AM


Good Point! :) :D :D :D

Related Content


XR650L super moto wheels by greggkklee

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  29 replies

Post Apocalypse, ThumperTalk style! by Justin Pearson

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  35 replies

Fell Off Trailer by usafxr

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  43 replies

2015 XR650L Squeaking noise by Crayjay

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 3 replies

Engine Loping/Sputtering by tcaldwell

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 4 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.