New 100 gallon RF build.

Discussion in 'Reverse Flow' started by is2326, Jun 28, 2015.

  1. is2326

    is2326 Fire Starter

    Hello everyone,

    I am new to this site, new to a build and open to all advice. So after years of using backyard smokers from big box stores that rusted away after a couple of seasons I have decide to build my own.
    I just picked up a 100 gallon tank on Craig's list that's short and stubby. Approximately 43" tall x 30" round. At this point I'm not sure if I want to trailer it or just make it a backyard design!!! The tank is a worthington manufacturer date 08/00 and obviously I cant tell how long it's been emepty but I assume for several years since the value was removed and someone welded some of the opening closed.
    With this being said would you guys feel same cutting into it? I will attempt to post pics but please bare with me I'm not computer savy!!

    Thank you for great site.
  2. Welcome to the site, I made mine without a trailer simply because I don't cook for anyone and if I do I simply cook before I head over. As far a cutting the tank goes you can do what I did simply lay your torch on a brick and let it burn its way through without you being there if your concerned and your good to go. Good luck on your build.
  3. joe ny

    joe ny Fire Starter

    I am using the same size tank for my build. I did not do a trailer simply because it is too big to fit at my house and built a simple cart. My tank was open for a long time, years and had no propane smell. I would defer to others with more experience regarding cutting it.
    Good luck and enjoy it. It was my 1st build and I am having a great time with it.

  4. is2326

    is2326 Fire Starter

    Smoking Dreams thank you. Unfortunately I don't own a torch But I can get one. Even though someone has already welded on the tank I think it will be a good idea to fill up and drain it. Better safe than sorry. But I agree with you on the trailer part, I only cook for myself and a few friends when they ask. 
  5. is2326

    is2326 Fire Starter

    Joe I am curious as to how yours turn out, Do you any pics you care to share yet?
  6. There I removed the Pics.  Not trying to hijack anything, just showing what we did.

    Last edited: Jun 29, 2015
  7. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

  8. jckdanls 07

    jckdanls 07 Master of the Pit Group Lead OTBS Member

  9. I meant to post a few pics of some of the tools we used, didn't mean to post the whole build,  Sorry,   

    Here are just a few pics of some of the tools that will make it easier, Besides a torch and welding machine

    Drill with a uni-bit

    SkillSaw  with metal cutting blade

    Angle Grinder with cut off wheels and grinding disk

    Last edited: Jun 29, 2015
  10. is2326

    is2326 Fire Starter

    Started stripping the paint yesterday and almost finished tonight. Also the hinges I plan on using showed up today.
  11. Man !!! Clean as a whistle, nice job  and I like those hinges

  12. is2326

    is2326 Fire Starter

    Thanks Gary I thought it would be easier to start with a clean canvas.
  13. is2326

    is2326 Fire Starter

    So i'm really confused about the calculations and I know this has been discussed many times but since I am new at this and was never a good math student I need some help. So the tank I have actually measures 43L x 30D which equals 30,379.50 cubic in. (feldon's calc) The manufacture website says the tank is 420 lb or 99.1 gal with a 27,680 cubic in. So using Feldon's Calc tank volume only and entering 99.1gal = 22,892.10 but if enter 120gal = 27,720.00 very close to manufacturers cubic in.

    Can someone help me clear this up and then I can get into the FB size cause using the above #'s the box is all over the map... 

  14. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    New propane tanks are 20% larger than the gallonage shows... air space for expansion....
  15. is2326

    is2326 Fire Starter

    Dave thank you for your input since I feel your like the Gran Puba on here. So should I use the tank size for calculation 30,379.50 or the manufactures 27,680.00???? Being my first build I don't want to screw the pooch..Or the FB

  16. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

  17. You said the tank was tall (or long)   what is distance between the seams

  18. is2326

    is2326 Fire Starter

    Dave I just used the Gary's ratio but like I said earlier I am dumb when it comes to formulas.

    Gary the distance from seam to seam is 29''  and 7'' to the end crown on each side.
  19. is2326

    is2326 Fire Starter

    Came up with these numbers last night using the link you gave me Dave. Thank you
  20. is2326

    is2326 Fire Starter

    Finally got around to working on the smoker today. Prepped the fire box opening, cut the door and trimmed it.

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