View Full Version : Lighting up a Rosebud?
08-04-2009, 01:01 PM
I have just acquired an old Victor rosebud torch with mixing handle. I tried to light the thing up, but all I seem to produce is a very bright light and a large bang.
08-04-2009, 01:52 PM
What procedure are you using to light it?
The fuel needs to be turned on first, ignite it then turn the
oxygen on. Maybe the fuel isn't turned on enough. What pressures
are you setting?
08-04-2009, 02:03 PM
Unscrew the rosebud from the mixing handle and look at the sealing surfaces to make sure there is no damage and that the O-ring is good. If it is leaking here, not uncommon, it can produce the very thing you are describing plus it can cause dangerous flash-back into the hose. There may be damage from being dropped on a concrete floor and if so it may not be practical to repair, don't know why but it seems if one of these things gets dropped it will land on that end just about every time! :mad:
What size is this Rosebud and how much Acetylene and Oxygen pressure are you using? A large no.12 Victor will need from 12 to a full 15 PSI on the fuel to function properly. Also are you SURE this Rosebud is for the right fuel? Victor makes one for Acetylene and another model for Propane/Propylene etc.
08-04-2009, 03:19 PM
Inspect the sealing faces and O-Rings as previously noted. You are going to need a good supply of acetylene if you are going to run very long. A small tank should light and run properly for a while. Purge both hoses and torch chamber by opening the valves one at a time and let it run for 10 sec. then close. I turn the fuel regulator up to at least 10 psi. open the torch valve and light the torch. Open the valve until you have a good flame with enough flow to be making a moderate noise. The flame should still be attached to the tip. Crack the Ox valve slowly and bring it up slowly in volume. As the flame tips from each hole begin to be defined A feather which is a reducing flame zone will develope increasing the ox slowly will reduce the feather until it disappears. Bring the torch to the work. Control the torch and don't bang the torch on the work. I start with the torch an inch or so back to pre heat then bring the it to where the white tips are just off the work surface. I don't remember tank sizes but for running more than a few minutes I went to a larger acetylene tank. Aprox 12 inch diameter X 4 1/2 ft tall.
08-04-2009, 03:57 PM
A small tank should light and run properly for a while.
Actually it won't if this is indeed Acetylene he is using since a large rosebud will easily exceed the tank's safe draw-down rate and fluid from the tank will be drawn into the regulator ruining it! It should work ok with Propane or Propylene however if that is what is being used but an Acetylene Rosebud MUST have a large tank or damage may result.
08-04-2009, 06:40 PM
Well I guess I found the problem. There is no O ring. I guess a trip to the store is in order. 8^)
The lower portion of the tip where it threads on says "Victor 10 Type 1", the rosebud tip says "Victor 15 A11." I presume it is acetylene. I guess I'd better look it up.
I'll try again when I locate an O ring.
08-04-2009, 08:29 PM
You do have a big rosebud there, how big is your Acetylene tank? I wasn't joking about those small tanks, if it is too small for the torch it will draw fluid into your regulator and ruin it. Acetylene has a draw-down rate that is not to be exceeded, the amount of gas that a tank can have drawn off during any given period depends on the tank size and the temperature.
The rule is that you should never exceed a usage rate that exceeds 1/7 of the tank capacity but if the tank is very cold you may not even get that much, likewise if the tank is quite warm you might get away with a little more but you should not try.
08-04-2009, 09:43 PM
There are not any cool places in south Texas this August.
08-14-2009, 06:44 PM
Well the "O" rings finally came it. Man that torch makes a lot of heat! While I was waiting for the "O" rings I found a #8 rose bud at a flea market. The #8 does put out a more reasonable quantity of heat. Do any of our Canadian members need something to heat their shops with this winter? 8^)