brazing/soldering questions

[Optimus Prime]

Seems like a few people on here might be able to help me out here...
Question is, do you think I'd be able to do some decent brazing or soldering with a propane torch, or something equally cheap, in my garage for some bicycle frame work? No structural work, just putting some brackets for a chain guard and a water bottle/thermos cage on an old chromoly steel cruiser frame and possibly filling some rust spots to smooth out the tube surface in spots. I haven't really done any soldering past electrical and a little bit of jewelry work, so I guess I'm just wondering if you think a propane torch would get hot enough?

[Big Steve]

Nope, It won't get hot enough.
Steve

[okie shooter]

Maap gas or a small oxy/propane/maap, heres one I saw at TSC

http://www.mytscstore.com/detail.asp?pcID=1&paID=1011&sonID=598&page=1&productID=1472

[Optimus Prime]

Maap gas or a small oxy/propane/maap, heres one I saw at TSC

http://www.mytscstore.com/detail.asp?pcID=1&paID=1011&sonID=598&page=1&productID=1472

The question now is how much do those go for? I just hate to spend a bunch on something I need to braze on three small parts on one project...

[okie shooter]

When I had the main tubes rebrased on a bike years back, I just went to the local welding shop and the guy charged me ten bucks and did it in a couple of minutes. He had a oxy/acc setup though so plenty of heat. That one at TSC for mapp/Oxy was near fifty bucks. Not sure if you could get enough heat with just mapp gas/air(plain torch) but you might. All you need for mapp is just your propane torch and a bottle of mapp instead of propane.

The problem is bycycle tubeing is almost ideal heat sinks too, long, light weight and lots of surface area to take the heat away.

[Optimus Prime]

Like I said though, I'm not too worried about the strength of the joint, I just would rather have fixed points to secure the chainguard to insted of just loops rubbing on the paint. I guess I could also use some sort of epoxy or something, but I'm not sure what would work under the paint and everything.

[okie shooter]

I think a bottle of mapp is like seven to eight bucks. You can see if it will get you enough heat to do the job on the spot.

[Optimus Prime]

I think it would work if I can get the flame right... probably be a while though, still need to get half the parts for the bike so I can mock up where I need the brackets...