HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
CJPilot

Welding On Alum. Subframe

10 posts in this topic

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? :)

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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.'

Share this post


Link to post
Share on other sites

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 :)

Share this post


Link to post
Share on other sites

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 ?

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites

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?! :)

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0