How should I fix this?
- Thread starter BlackdogGS
- Start date
mike93lx
ALLIANCE MEMBER
Grind it out and weld it. Add a gusset if more strength is needed
Looks like a crappy weld to start with. Tons piled up on there.
Looks like a crappy weld to start with. Tons piled up on there.
Old Man Roger
Well-known member
Are you positive it isn’t just the powder coating cracking?
OP
BlackdogGS
Well-known member
I’ll double check. This is in a high stress spot so it could still use some additional support.
x2 on the gusset.
PLUS on the gussets
Why just 2?
OP
BlackdogGS
Well-known member
Ok, I’ll just use gusset. If I had a tube bend and notcher I could be more creative.
slowtwitch73
Well-known member
That's for sure a crack. Replacing the material completely would be best, ie rebuild it.
But gussets should work a long while. You could use flat stock to get around not having a bender/notcher.
But gussets should work a long while. You could use flat stock to get around not having a bender/notcher.
driftpin
Well-known member
No longer under warranty? They'd probably disclaim it, saying, "you overloaded it!"
Doing a birdsmouth with tubing would be the 'pretty' way, but flat plate would be a lot easier. Check to ensure that your gusset just doesn't transfer the load somewhere else to over-stress and fail.
Doing a birdsmouth with tubing would be the 'pretty' way, but flat plate would be a lot easier. Check to ensure that your gusset just doesn't transfer the load somewhere else to over-stress and fail.
OP
BlackdogGS
Well-known member
I removed the coating, it’s cracked.
OP
BlackdogGS
Well-known member
I did overload it then rode up to Tuktoyaktuk where I did 1,500 miles of dirt and gravel.
Attachments
OP
BlackdogGS
Well-known member
Ok, I’m thinking 1X1 inch triangles 1/8 inch thick for gussets. Sound about right?
Jswain
Well-known member
I would probably go out a few inches if it stressed it enough to crack it in the first place.
Notched tube would be best and if you only have to make two would be easy enough with an angle grinder. If not some thicker plate 3"X3" cut like a triangle.
Notched tube would be best and if you only have to make two would be easy enough with an angle grinder. If not some thicker plate 3"X3" cut like a triangle.
slowtwitch73
Well-known member
You can do two big triangles sandwiched over the whole thing, or two that lay in the crotch on either side... or both if you wanted to go nuts.
Brazing is a good idea.
Brazing is a good idea.
The first and most important thing is to stop drill the ends of the crack. 1/8" is fine. It's inportant to know what material the rack is made of if it's chrome molly a different welding method would be required. If it's mild steel brazing would be a good way to do it.
slowtwitch73
Well-known member
Brazing would work fine on cromo.
iagsxr
Well-known member
Couple gussets like this. Braze or TIG w/silicone bronze for filler.
iagsxr
Well-known member
Speedway Motors, Allstar Performance. They're pretty common in circle track stuff.
joe49
Well-known member
It appears to have cracked in the under cut of that poorly done weld. I would weld it for a repair, tig or O2/Ace, both of which are acceptable for chrome moly or steel. Braze or tig bronze may open up further trouble and limit repairs down the road.
4 FN 27
ALLIANCE MEMBER
I use to make those for Speedway years ago...they work!!!