Pic of my diffuser on my 22" kettle.

[Deltaboy]

Great Idea.

 

[mchar69]

Nice yellow 1 buckie. What year do you think it is? Earlier than '79 at least.

 

[1buckie]

Nice yellow 1 buckie. What year do you think it is? Earlier than '79 at least.

I think we determined it's a late '74~'75......

Weber Kettle Club will be publishing an extensive guide to each year here pretty soon......not quite ready yet.......
It gets down to fine details so you can get real close if not exactly on the dates...........:clap:

This one is hyper-tight....the vents, the lid fit...everything.....the fellow that gave it to me (yes, a GIFT!!!!) even had a hard time taking it apart to get it in his car as the legs had probably only been placed in once.....

 

[charrederhead]

that's gorgeous, buckie. :clap2:

 

[1buckie]

that's gorgeous, buckie. :clap2:

Lance (Mirkwood) swooped it up at an estate sale & GAVE it to me !!!

Now, back to the OP, which is already in progress....

mchar.....

This is a snazzy one my buddy Hogsy from OZ (Australia) made up using cardboard to map the fittings.....

There's big semi-circle down in the bottom that shovels the air toward the coal pack....

And a "kettle protector basket" that fits into the coal side....

He reports the same temperature difference & control that you're getting & really likes how it works....I've got metal, but haven't got to cutting as of yet....

I asked him if I could show the pics around & he gladly agreed ......:clap:

 

[mchar69]

Hey Buckie, that looks like it could be produced and sold, nicely done.
Hey, whatever works!
Do you know what year they stopped writing BAR-B-Q on the vents?

 

[1buckie]

I think it was 1977.....then it 1st went to Weber with an etched outline & a very tall "B" in the name for one or two years....then to what you see today & the date codes starting 1979...........

I think that's right, but the date pages aren't all laid out over there just yet & sometimes I get foggy on stuff.....

Edit:

Found some more info....changed to engraved word Weber, with tall letter "B" in 1976, then raised, or embossed Weber, with tall letter "B" (the tall letter was to accommodate the vent rivet) in 1978
'79 starts the "A" Coding on the vent....up until this year when they are all serial #'s.....