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Exhaust bending... fun for all the family
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Exhaust bending... fun for all the family
The Yoshimura trad way (and likely everybody else, back in the day)
And the other way...
The second way is ruled out, as I don't have a bender that size, but the first way - I wonder if I can get enough heat from a propane/compair torch.---- Dave
Only a dog knows why a motorcyclist sticks his head out of a car windowTags: None
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JEEPRUSTY
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You wont get the required heat with a propane torch. That Rosebuds hitting well in to the 1750 to 2000 degree range.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35585
- Torrance, CA
That bending method takes a LOT of heat. Wonder what the gas cost would be for a whole set. Very cool regardless. Makes we want to make my own header.Ed
To measure is to know.
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He doesn't mention it, but adding some dish soap to the water helps it move around easier during the bend and keeps things smooth. He needs a bender like that because he is using sewer pipe, 1.6mm = 0.062" wall which is at least twice as thick as it needs to be.
Mark1982 GS1100E
1998 ZX-6R
2005 KTM 450EXC
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Originally posted by Nessism View PostThat bending method takes a LOT of heat. Wonder what the gas cost would be for a whole set. Very cool regardless. Makes we want to make my own header.
So very tempting. I'm trying to suss out what cheap and easily available fuel gases around here would do the job. Problem around here is the Oxy, acetlylene and others are sewn up in deposit and rental schemes that are aimed a fab workshops, not private users, and are too spendy.
Propane/compair would be cheap and easily got.---- Dave
Only a dog knows why a motorcyclist sticks his head out of a car window
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JEEPRUSTY
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Originally posted by JEEPRUSTY View PostWell if they can make a katana in a small charcoal oven anything is possible---- Dave
Only a dog knows why a motorcyclist sticks his head out of a car window
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Originally posted by Grimly View PostDoesn't it just?
So very tempting. I'm trying to suss out what cheap and easily available fuel gases around here would do the job. Problem around here is the Oxy, acetlylene and others are sewn up in deposit and rental schemes that are aimed a fab workshops, not private users, and are too spendy.
Propane/compair would be cheap and easily got.
Mark1982 GS1100E
1998 ZX-6R
2005 KTM 450EXC
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If you're going to heat bend, what you need is a ring tip. Tubing ring about 6inch dia with at least three flame tips facing inwards. This ensures the whole circumference of the tube is heated as quickly as possible. A guy local to me used to do it using LPG - similar to propane I believe.Uses a LOT of gas....
Personally, I make up my pipes from bends, using oxy acetylene welding. usually 16G - or 1.6mm too. Even 2 stroke expansion chambers are made in 20G or .9mm. If you go much thinner than this they crack too easily - and get very hard to weld....
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Originally posted by GregT View PostPersonally, I make up my pipes from bends, using oxy acetylene welding. usually 16G - or 1.6mm too. Even 2 stroke expansion chambers are made in 20G or .9mm. If you go much thinner than this they crack too easily - and get very hard to weld....
I can guarantee the header pipes on the Kerker my 1100E is wearing are no more than ~0.030" or so, they are far too flexible and ring at too high of a pitch for anything much thicker. 20ga sheet is only 56% of the thickness of your 1.6mm tube, that is a world of difference between the two even if it seems like very little. I agree that welding the 16ga is a lot easier than the 20ga.
Mark1982 GS1100E
1998 ZX-6R
2005 KTM 450EXC
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Originally posted by mmattockx View PostI think Oxy/Acetylene is the only thing that will push that kind of heat. That is a big rosebud, too, much bigger than is used in most fab shop/welding work. I imagine the air temp in that small shop space got very uncomfortable with that rosebud blasting away like that.
Mark
Originally posted by GregT View PostIf you're going to heat bend, what you need is a ring tip. Tubing ring about 6inch dia with at least three flame tips facing inwards. This ensures the whole circumference of the tube is heated as quickly as possible. A guy local to me used to do it using LPG - similar to propane I believe.Uses a LOT of gas....
Personally, I make up my pipes from bends, using oxy acetylene welding. usually 16G - or 1.6mm too. Even 2 stroke expansion chambers are made in 20G or .9mm. If you go much thinner than this they crack too easily - and get very hard to weld....---- Dave
Only a dog knows why a motorcyclist sticks his head out of a car window
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