Ribbon Forge Burner

[david hyde]

3 off 3/4" atmosspheric burners

[Robert Suter]

3 off 3/4" atmosspheric burners

David,
Let me see if I can say this with a straight face, where are you from? Do you speak English?

Your friend, Colloquial Bob

[Mike B]

For what it's worth, my feeble understanding is that it takes more power to generate a given flow rate at a higher pressure. So if two blowers are rated at the same CFM, the one that makes more pressure will need more horsepower.

But on a given blower, what generally limits pressure is the point at which the fan blades stall aerodynamically, not the point at which the motor stalls. If a blower stalls at 4" WC at 3000 RPM and 1/4 HP motor can spin it to 3000 RPM under load, it will make 4" WC with a 1/4 HP motor and 4" WC with a 400 HP motor. So a bigger motor may mean a blower can make more pressure, but it might only mean it's overpowered.

You probably should be looking for a centrifugal blower, where there blades are relatively wide (i.e. each one extends for a significant distance along the radius between the fan circumference and the hub). The most common blowers here are what we call a squirrel cage, which have narrow blades on the outside of a drum-shaped blower wheel (and therefore look like a wheel for exercising hamsters). These generally make less pressure than a centrifugal blower.

[Lewis]

I think David is saying that his forge uses 3 atmospheric burners made of 3/4" pipe. Not that hard really.

[Robert Suter]

Yes, I think David understands, I am playing the colloquial American not understanding commonly spoken English, while busily pumping out my own version of English that I think is correct.
Bob

[Bill Cottrell]

Aw Bob ya just gotta remember you don't talk proper english - you talk Texan like I do, so at least I understand ya.
Bill

[Mike B]

The real question might be whether that 3/4" pipe is 3/4" ID or 3/4" OD. (Of course here, the answer to that question is "no." )

[Lewis]

The real question might be whether that 3/4" pipe is 3/4" ID or 3/4" OD. (Of course here, the answer to that question is "no." )

It's just over 1" OD! Do I have to explain everything?



(I'm actually following all this with interest. I, too, have a ribbon burner on the shelf which I actually used for several years. No one ever told me that they couldn't be atmospheric and it worked surprisingly well. In retrospect, I like it better than my current forge. I think I'll hook up a burner and put a new lining in the old thing.)

[Robert Suter]

Lewis,
That’s great, we need more troops. While you’re up ask some simple question about fans so I can confuse the issue further. It seems there are a few guys with burners that were never used or fell into disuse, I am curious as to why. Was there a common problem? Was it lack of information to help? You were using the burner as an atmospheric burner? No!? that’s wild! I wonder if it could work with a venturi intake to bring it up to pressure, it would need a big one I think or maybe tuned pipes. Somebody stop me, I’m out of control!!!
Bob

[Bill Cottrell]

Bob - STOP!