converting acetylene rosebud to propane

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I have a victor 6-mfa rose bud that is too big, i believe, to run off of my 130 cubic foot acetylene tank. What is the structural difference between this tip and the equivalent size propane tip? Can i convert this tip to work well, not marginally well, with propane? What fuel pressure range would i have to run?
Reply:I've never had any real success in swapping a tip from acetylene to Mapp / Propane.Options:Get a larger acetylene tank for those heating jobs.Manifold together small acetylene jobs and run the big rosebud.Buy / barter for a propane rosebud that will do your job.The acetylene is going to heat your base metal faster. Is heat up time important?Thanks,HoboLincoln SA200's... at least 15 - 20. They come and go. Growing partial to the "Short Hoods" in my old age. Last count on Short Hoods was 13 in possession.
Reply:Originally Posted by hobohiltonI've never had any real success in swapping a tip from acetylene to Mapp / Propane.Options:Get a larger acetylene tank for those heating jobs.Manifold together small acetylene jobs and run the big rosebud.Buy / barter for a propane rosebud that will do your job.The acetylene is going to heat your base metal faster. Is heat up time important?Thanks,Hobo
Reply:Post a "WTB" (Want to Buy) ad on your local Craigslist. It is amazing what items people have and will sell for pennies on the dollar. It helps if you post a photo of the item you want. Yes.... you will have to sort out the scammers and people who have no idea what your talking about. It's best to have them reply with a photo of what their item looks like. In doing this those running a scam will get sorted out. Thanks,HoboLincoln SA200's... at least 15 - 20. They come and go. Growing partial to the "Short Hoods" in my old age. Last count on Short Hoods was 13 in possession.
Reply:From what i can gather through internet research, the only difference between propane rose buds, is the recess at the end of the tip. From looking at my own rose bud, i'm assuming that the wrench flats mean the tips are threaded. Could i buy a propane tip for this rosebud body? If so where would i find one?
Reply:I believe someone on here has had good luck with adding a copper tube to simulate the recessed end.  Sent from my DROID3 using Tapatalk 2Jay DavisAWS-CWIC-60 Specialty Welding ContractorLoving husband, and father of two boys (
Reply:Originally Posted by jbyrdI believe someone on here has had good luck with adding a copper tube to simulate the recessed end.  Sent from my DROID3 using Tapatalk 2
Reply:Your gonna want the proper mixer as wellExperience is something you get right after you need it
Reply:Originally Posted by Fred sYour gonna want the proper mixer as well
Reply:You need an MFN-? for propane and you won't need a seperate mixer.Last edited by vwguy3; 08-27-2012 at 04:54 PM.
Reply:Have you tried it? When I switched from acetylene to propane a few years ago I found that nearly all my rosebuds, rivet washing and flushing tips work fine with LP. If it doesn't work then yes, find a copper or brass tube  that just fits the OD of your torch head and solder it on so it protrudes about 1/16" thus giving you the recessed tip you need for propane.metalmagpie
Reply:Originally Posted by metalmagpieHave you tried it? When I switched from acetylene to propane a few years ago I found that nearly all my rosebuds, rivet washing and flushing tips work fine with LP. If it doesn't work then yes, find a copper or brass tube  that just fits the OD of your torch head and solder it on so it protrudes about 1/16" thus giving you the recessed tip you need for propane.metalmagpie
Reply:Anybody know how long RM hose will last with propane?
Reply:Originally Posted by xavier23I haven't tried it yet, can i run propane through grade RM hose? I don't want to pay 70 bucks for 50ft, length of my current hose, of T grade. Not sure what rivet washing and flushing tips are, but i'm hoping this rosebud works without modification. Would adding the copper tube present any new safety hazards or considerations?
Reply:FWIW the guy at my LWS said that the Smith torches used brass for propane vs copper for the acetylene due to the higher heat output of propane.  I know the flame temp is higher on acetylene, but the total BTU output is higher on propane.  The brass vs copper was true of the Smith torches they had for propane vs acetylene, so perhaps he had something there.-DaveXMT304 with: 22A Feeder, or HF251 Hi Freq DC TIG air cooled
Reply:Originally Posted by davecFWIW the guy at my LWS said that the Smith torches used brass for propane vs copper for the acetylene due to the higher heat output of propane.  I know the flame temp is higher on acetylene, but the total BTU output is higher on propane.  The brass vs copper was true of the Smith torches they had for propane vs acetylene, so perhaps he had something there.