Ok for you fab guys , or anybody with welding expertise . If you were going to build an offset in a piece of 1'' pipe. Would it be stronger to heat it with a torch and bend or cut the slice out bend and reweld it???????
welding question
- Thread starter Uncle Stretch
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If you heat and bend it, chances are you're going to anneal the tubing (soften it). Is it going to be a major stress point? Are you using mild steel, 4130, or??
Its mild steel. I was thinking the same thing,that by heating it that it would weaken the pipe. Its that schedule 40. Guess its just black gas pipe really.
I know you hate drawing, but I need an image of what you're building :lol: . If you're making this section before welding it to the frame, just get the whole piece glowing hot with the torch and dunk it in water, it'll harden the steel back up. I'm guessing that you're making seatstays or chainstays that flair out?
Yep that was the plan. I'm thinking of trying the two loops like I always do and not doing the all the way to the front. I will see what it looks like that way. I know how to do them.
How much offset, and what is the wall thickness of the pipe in mm? (I'm an Aussie and not familiar with the type of pipe you are referring to) If the wall thickness is more than 2mm or so, I would say heating and quenching it would be fine - I'm pretty sure the bike's not gonna see any half pipe or dirt jump action? I have widened the rear of a couple of frames using heat with no problems.
Just saw your pics. Looks like you cut and bent? You could definately bend that with heat and not suffer any structural problems. Would probably have to pack with sand though. The frame is looking great.
Just saw your pics. Looks like you cut and bent? You could definately bend that with heat and not suffer any structural problems. Would probably have to pack with sand though. The frame is looking great.
I checked and I was out of oxygen so it made the question moot. It probably would have been ok to bend,but I know my welding will hold. It turned out pretty good so far. Alot more work than I was expecting on some silly chain stays.
Its funny I was going to buy some land in Mexico and they kept saying sq meters. I never could visulize in my mind how much land there was due to that silly meter stuff. I guess yall feel the same way about our acres and other measurements. :lol: :lol:
Its funny I was going to buy some land in Mexico and they kept saying sq meters. I never could visulize in my mind how much land there was due to that silly meter stuff. I guess yall feel the same way about our acres and other measurements. :lol: :lol:
When I started my apprenticeship, all the (older) tradesmen in the shop pretty much worked in feet and inches, so I had to learn fast. I'm OK at converting feet, inches and fractions to metric in my head, but I'm a bit slower when it comes to working out decimal inches (does that make sense?).
Yep makes sense. My problem is in my mind I know how big and acre is . It 200 feet by 200 feet. When the said this property was 11 meters by 14 meters I couldnt even start to conceive what that was or how big. We were running around with calculators trying to figure it out. The part that messes me up is a meter is 39 inches..why couldnt it be 36 inches and be a yard. I would be good to go. :roll:
