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new air tank for reverse flow - Page 2

post #21 of 34
Thread Starter 
I just checked width and height of my rf plate and the width 21.5 my height is 7.25. When I check the height using 6.75 my Width Is 21.5.want to make sure of calculations
post #22 of 34

When you say half moon, is the radius up, or down?

post #23 of 34
Thread Starter 
Have a question about door flange and door hinges.do u weld door flange first or hinges first. I would like to use barrel type or L type.
post #24 of 34
I would weld on the flange, (and use 14-16 ga.) check to see if gaskets are needed, install them, then weld on the hinges... I would not use the barrel hinges... they are very unforgiving...
post #25 of 34
Thread Starter 

took measurements of my tank and came up with different numbers then calculations by vol of 110 gal.want to be sure before I proceed.when cutting notch for fb do you cut up welds or past welds ..any good links please forward.thanks

 

ol.........................62

od.......................24

between welds....46.

 

vol              28033.92

fb              24x20x20      106%

chim          476 vol          4x42  rnd

int              4x3    2 

 fb to cc     112.13

chord          22.04

seg              7.25

post #26 of 34

smokn,

 

I used your last numbers and came up with a CC volume of 105.7 gals, 24434 cu. in.  I assumed a 1/4" wall thickness. 

 

Putting the FB at the welds or past them is mainly a matter of aesthetics (how it looks, how it fits into your plans).  General rule is 1/3 the length of your FB.  I put mine in as far to line up with door flange.   If the tank is very thin then I would leave the welds to give you something more substantial to weld up your FB.  Hope that makes sense. 

 

RG

post #27 of 34
Quote:
Originally Posted by smokn ring View Post

took measurements of my tank and came up with different numbers then calculations by vol of 110 gal.want to be sure before I proceed.when cutting notch for fb do you cut up welds or past welds ..any good links please forward.thanks

ol.........................62
od.......................24
between welds....46.

vol              28033.92
fb              24x20x20      106%
chim          476 vol          4x42  rnd
int              4x3    2 
 fb to cc     112.13
chord          22.04
seg              7.25


Your numbers look good.... The gallon volume is different than the measured volume... They allow room for expansion... an air space so to speak...
For the FB cut-out, cut past the welds... then the RF plate will fit better with the welds gone.... there is usually a strip behind the weld that screws stuff up...
post #28 of 34
Thread Starter 
Thanks for all the help still trying to understand the mechanics of the build.does the fb need to be the same width as rf plate my chord is 22.4 so should I make fb at 22 as well.thanks
post #29 of 34
FB width should be at least as wide or wider as the RF plate for good fit-up. I made mine about 2" wider...an inch on either side.

RG
post #30 of 34
Thread Starter 

it has a stamp on I that says....  110.5  

                                             ol    62

                                             od   24

                                             hd    21

still tryn to see how you reached 105.7  .could you please elaborate.thanks

post #31 of 34
Quote:
Originally Posted by smokn ring View Post

it has a stamp on I that says....  110.5  
                                             ol    62
                                             od   24
                                             hd    21
still tryn to see how you reached 105.7  .could you please elaborate.thanks

You are giving outside dimensions I assumed a tank thickness of 1/4" to derive inside dimensions. ( did not see the .187 in prior post). A small increment
change in tank thickness can affect the total volume since it is applied over the entire surface. Hope that makes sense. Go with the 110 gallon since
you have it confirmed via stamp and good approximated volume with measurements.

Other places for volume errors are measurement errors, exact shape of the "domed" ends (are they spherical, elliptical).

Don't sweat the details too much, but do pay attention.

RG
post #32 of 34
Thread Starter 
Thanks rg for the info and yea it has .187 on tag as well.I'm try to soak up all info I can not only to build the perfect smoker but for knowledge and insight also.you and dave are the best.
post #33 of 34
Thread Starter 
Believe I got accurate Numbers for my build.what u guys think.will it work.what is the best material to ise for smoke stack. Thanks
post #34 of 34
Thread Starter 
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