well i had to add some legs to a incomplete roll bar so i thought i'd show off teh welds on them...
enjoy



and the cage

 

Are you serious? I wouldn't trust that on a golf cart.

 

sure thing bud

 

looks good! although im no welder! what tyoe welder and metal are you using!

also how is the penetration?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rip94delsol &raquo;</TD></TR><TR><TD CLASS="quote">looks good! although im no welder! what tyoe welder and metal are you using!

also how is the penetration?</TD></TR></TABLE>

miller syncowave 350
penetration is good i NDI'd it and checked good with no voids... i cant rememeber what SS rod i used off the top of my head......

 

whats the cage for? those do not look like 6x6 plates

 

you should not use ss filler on anything other than stainless , and joining stainless to mild steel ,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C1CYA &raquo;</TD></TR><TR><TD CLASS="quote">you should not use ss filler on anything other than stainless , and joining stainless to mild steel , </TD></TR></TABLE>

yes and no.. u can use SS rod with mild and it helps remove teh impurites out from the mild and gives it a stronger weld.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garage 808 Hatch &raquo;</TD></TR><TR><TD CLASS="quote">whats the cage for? those do not look like 6x6 plates</TD></TR></TABLE>

no it isnt 6x6 its for a street car didnt need to be...plus i didnt have it

 

Says who? I have never even heard of somebody using SS filler unless it's 309 filler for disimilar metals, and how does a fill help remove impurities? How is the weld any stronger?

Just because it's a street car doesnt mean that it sitll doesn't need sufficient mounting plates, think of the load that cage is going to see in the event of a rollover and it will probably punch through the floor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by S@nt0s &raquo;</TD></TR><TR><TD CLASS="quote">

yes and no.. u can use SS rod with mild and it helps remove teh impurites out from the mild and gives it a stronger weld.

no it isnt 6x6 its for a street car didnt need to be...plus i didnt have it</TD></TR></TABLE>

 

I was told if you use ss filler on mild to mild , the weld will is weeker than if you used the correct mild rod

 

this is what has been passed down to me as a aeronatuical side of the house.

i not a years apon years experianced guy, this is what i learned.... NDI's checked good on it...

 

The properties don't match, and therefore the weld will be a random mixture of the 2 metals.
It's not a good idea, guys do it just for looks. It is not an issue to get mild steel to look nice with the right heat etc.
The weld looks alright, just the weld design I don't agree with.
As an example, I just welded these flanges today...
All mild steel, er70s-6.
Mine is not an excellent weld, but it is fine, and the proper filler was used
with good results.

 

and the plates were 3x2 3/4's 1/8" thick

also im not saying you cant weld with mild, but what i learned is its better to use a SS with mild over a mild on mild

 

If this was the case then why do all welding texts i have read advise against it?

I'm not saying what you did is wrong but would i trust it and the overall construction probably not. I;m not saying your work is bad, but please think about safety when you're performing work that effects it

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by S@nt0s &raquo;</TD></TR><TR><TD CLASS="quote">and the plates were 3x2 3/4's 1/8" thick

also im not saying you cant weld with mild, but what i learned is its better to use a SS with mild over a mild on mild</TD></TR></TABLE>

 

i based these leg plates off those that come with this autopower which are roughly the same size but about half as thick.....

 

Did you extend the bars on the front of that thing? Apparently you've never built a cage before.

Casey-
You can weld mild to mild with 309L stainless filler without "major" problems.


Modified by k24em2 at 12:56 AM 2/5/2007

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 &raquo;</TD></TR><TR><TD CLASS="quote">Did you extend the bars on the front of that thing? Apparently you've never built a cage before.

Casey-
You can weld mild to mild with 309L stainless filler without "major" problems.</TD></TR></TABLE>

Yeah, im very aware of this, but this is a structural part, not a header or anything else of that sort. when er70 would have been the preffered, that fact remains that it isnt proper

 

Yea, for mild steel in a cage er70s-2 or er80s-d2 is a better choice.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 &raquo;</TD></TR><TR><TD CLASS="quote">Did you extend the bars on the front of that thing? Apparently you've never built a cage before.

Casey-
You can weld mild to mild with 309L stainless filler without "major" problems.


Modified by k24em2 at 12:56 AM 2/5/2007</TD></TR></TABLE>

no i just did the rear legs... the roll bar itself is a autopower

 

You should have removed the little nubbins that were on the bar to begin with and notch some new tubing to weld to the bar, instead of making the legs longer by welding on an extension.

 

Ill take that into account next time...

 

i was lead to believe that the aerospace industry does not use any components that are welded... components are machined from one piece of material and fastened together with fasteners, not weld. am i wrong here?

 

with stainless filler on mild-mild connections the weld may have a higher tensile strength, however it is more brittle.

probably not a huge problem in most cases, but in a safety or structural part i would never have used it.

i would only use er70s-2 or 6.

er80s-d2 i also only use on 4130-4130 welds. whereas er70s-2 is my preffered rod for mild-4130 connections.

also youre probably going to wish that you had slugged and plugged those butt welds, becasue right now, theyre not as strong as an unwelded straight tube. also, rules might dictate that you have to slug them.

good luck, but i wouldnt put that in a car that was meant to be safe.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by weiRtech &raquo;</TD></TR><TR><TD CLASS="quote">i was lead to believe that the aerospace industry does not use any components that are welded... components are machined from one piece of material and fastened together with fasteners, not weld. am i wrong here?</TD></TR></TABLE>

Depends, a lot of stuff is welded, but in critical components the less welding the better.

 

i dont have a reputation to protect, and im bored.

this guy is an idiot who doesnt know how to weld or how to make a cage.

he also doesnt know how to take criticism AT ALL.

bottom line, the cage sucks, and the weld sucks.
as said, and this is my favorite, i wouldnt trust that cage ina golf cart!