Firewood Heated Hot Tub | How We Built Ours

hey guys Eugene here from review at their gear and this video today is gonna be about our process of making the wood powered wood heated hot tub you guys might have seen our video where we install this hot tub out in the in the wilderness if you haven't that video is under this video in the description or up here in the corner check it out and the rest of video just gonna be you know our process and our mistakes and what we learned so here it is so this here is a stock tank that is 169 gallons and it's 2 feet by 6 feet I think it's about two feet tall as well and then there's a there's a drain pipe drain hole here that's plugged right now then you can unplug to drain it and then I think if I'm not mistaken haven't read it yet but I believe a hose screws into there like a regular hose and you can run that out so there we go and it's a let's see it's a galvanized steel tank and with saved heavy duty zinc coating so the galvanization is a sink so the zinc coated basically steel tub I'm thinking it's about it's probably between 40 or 30 and 50 pounds I'm wrong 30 and 40 pounds I think these are the components to build the Dutch tub the most basic ones and all quite nice so we have this copper tubing which is a half-inch external diameter 3/8 inch internal diameter and this one here is 50 feet long these are the fittings to attach everything to the tub which I'll show you in a second so these here are these adapters and they're 1/2 inch compression 1/2 inch MIP I'm not sure what that means brass so there are two of these that we need and basically I'll show you how those work in just a second and then we have two of these same thing and they're basically a a tank pass-through you know so you can put this inside the tank and this part goes inside and the screw goes on the or that goes on the outside and then this sits out like that and these have a thread that's 3/4 to 1/2 so the half thread is inside 3/4 on the outside so the half thread 1/2 inch thread here matches up with the 1/2 inch thread here so that we could we could screw this part into here like that after we have this on here so that screws in there and then this whole thing right here so this is in the tank this whole thing attaches to this so this has to be very important components that's not that comes off of here goes out here first and then this little compression bracket or compression washer I don't know what it's called but goes on there and then this part goes on here and you want to push this up all the way up against that and then push this in there and then start to screw that down so if you're having trouble finding any of these components to places to look a lot of a couple of them we got like this pipe right here at an Ace Hardware store you can also look at Home Depot Lowe's hardware store the other place to find a lot of this stuff like all of these right here we found at the North forty store about 40 outfitters and this is basically a feed and tax store that sells a lot of like farming gear and a lot of basically you know farmers seem to go there because they sell a lot of those things for repairing your hydraulics and all this stuff and they have a lot of these really cool hardware pieces there that we were not able well these right here we weren't able to find anywhere except there that's where to buy all the stuff because we took us a long time we went to like a bunch of places looking for all these things so the way we decided to coil this is we got a bucket this actually a bucket that's full the reason you just take it while these buckets fill it up with water just so that it doesn't Bend really easily I put put the lid on it so that it stays nice and solid and then we just marked off the edge that we're gonna have straight to the to the tank here and then we're just holding it one person holds it here like that and then the other person just pushes everything up and then you just coil it around here to make it the right diameter turned out yeah and then we're gonna drill the holes here so we're making them a foot apart on the bottom like this way and then about 16 inches off this way so it's not at the very top because we won't be able to not on the very top because we might not have water all the way to the top [Music] all right pudding sounds driving this system here just hooked everything up held it up just so it's over that and bubbles are starting to slowly come out and this pipe is starting to feel just slightly warmer I think heating up see how it goes whenever have to call this apart and take it out or guys somewhat of a development here so we initially started with the half inch external diameter piping and we really did a lot of experimenting and it works and we got the tub up from 46 degrees Fahrenheit to an 84 degrees Fahrenheit but it took quite a while and quite a few different experiments with the length of tubing and diameter tubing and there's a whole science to this that we kind of discovered along the way and one of the main things is that the diameter of the pipe he actually plays a huge role and the length of the piping because if you have a very long pipe the water doesn't have time to thermo siphon up out of the tubing before it boils and it boils and then when it does that the pressure expands on the tube and actually spits out hot water out of both ends and that's when you get that boiling action and it really messes up the whole thermal siphoning effect and the way if they're more siphoning works is that basically the hot water rises up the coil as it heats and you know and then the ethical oil is just way too tall with like more than five or ten coils it just gets really out of hand with it not having time to go up and if there's not enough of a slant for the water to rise that's also problem so if the you know coils are very flat it's worse you want them to be somewhat angled and also that exit pipe needs to be going up so that the thermal siphoning can take effect so all of that said we are gonna abandon this coil for now the half inch external diameter piping to be we're gonna be going to this three-quarters external diameter to be which we found actually like an amazing bargain so we bought we bought 50 feet of the half inch from a1 hardware so we found and where we live and it was based like 90 bucks or so for that 50 feet of tubing and you know at this points that's really pretty expensive and that was even cheaper than if we bought it by the foot we found this right here which is 31 feet of 3/4 external diameter copper tubing for basically it's $12 a pound and this was eight we're sorry 350 a pound and this was 8 pounds so do the math I mean it's about 20 down about 30 bucks or so 32 bucks so quite quite cheap compared to if we bought it at the store at the store this length would have been like over $100 so anyway we found it at a recycling place so go to your recycling call you recycling locations up and ask them if they have copper tubing that's what we did so right now we're coiling this up also we're calling it against this big iron thing we have you could do a bucket but um this is just more stable and it has been nicer to quit and the coil is a little bit bigger in terms of diameter instead of the 10 that we were doing before we're doing like a 13 inch coil so we'll see how that works it'll allow us have a bigger fire around it and you know we don't have to have as many coils so we can stretch it out a little bit more but it'll be wider because if we made the smaller we'd get more coils out of it but not necessarily but still hopefully uh we'll see how this works and we might even still have to shorten it up because of the length of the tubing we don't want it too long so anyway all of that to update you and the last final thing is we have to get some different fittings so these here actually work perfectly for us they work with the tank pass-through or cooler drain to bulkhead technically cooler drain or bulkhead fittings that we got that pass through the tank those bulkheads happen to have two threads one on the outside for a normal hose like garden hose fitting which is a 3/4 garden hose thread and the inside quad the inside thread on those is a half-inch iron pipe thread so we got these fittings here which have a compression fitting for 3/4 on one end so this will go under pipe aren't you think this will go over that it'll compress down and then this will will screw into our our bulkheads pastors and this is a half-inch iron pipe thread male iron pipe so mi P half-inch so let's put it all together we're gonna get it give another test run and hopefully this will be working a lot better than our previous setup check it out guys steaming up in there alright guys well look at all set up it's filling it's above that mark now and I've got the fire started and the coil get the coil secured with a little rebar here so it'll lift it up and the outside temperature is 37 degrees and this has been in here for a little bit let's check with the water temperatures let me just look at it yeah it's 30 34 it's pretty close to freezing mm-hmm 34 so we'll see how this goes I mean it's gonna take a while because right now it's purely all cold water so coming in like we got to fill it all the way up to at least here so guys about seven minutes in we've got water flowing out the top even on the water has even reached that yet and it's really it's going pretty good so good hey it's only get that shovel shovel dirty we're gonna stir it up and test the temperature so before we stir it up let's see what it's at yeah it's at 63 63 at the bottom priester let's go stir it up a lot they're definitely a really hot layer on top so we've been we've been stoking it for two hours and 15 minutes at this point we're gonna see where it's at it's looking looking good and feeling pretty warm all right this is the final unveiling watch the steam when you open this thing up that's crazy watch this oh yeah okay oh yeah let's see after we mix it up how is also good um it's going up to 90 right now but it's it's higher it's got a it's it's perfect it's so good all right Oh so guys we just got in it's been exactly 3 hours and 15 minutes and we are at exactly 95 degrees a little bit anybody like 94 and a half degrees and that's up from 35 34 35 when we started straight out of an ice stream dumb dumb so it is amazing so thank you guys thank you guys so much for watching this video you know hopefully you if you guys are interested in making something like this you can probably get one made all right guys well thank you so much for watching the video you know it was a great success this hot tub a lot of mistakes on our in our development of it but we learned a lot and hopefully you won't make the same mistakes now because you've seen what we messed up on so just to recap this it was very successful in terms of being able to heat water from we started at 35 degrees Fahrenheit and went up to 95 in 3 hours and 15 minutes I believe anyway we did some math basically it's about 19 to 20 degrees an hour average so that means at the end it was actually heating a lot faster per hour anyway it was just a great success awesome tub and if you guys want to see it being installed in the woods again we have a video of that down in the description so please watch that ask your questions hopefully we can answer some of those for you and you know if you make one of these yourself let us know we want to see it too there's a couple of them out there in YouTube so again thank you guys and God bless you and we'll see you in the next video

Channel: ReviewOutdoorGear

Views: 215,241

Keywords: Outdoor, gear, hiking, backpacking, review, travel, nature

Id: 4JFdDITCH-8

Length: 14min 49sec (889 seconds)

Published: Sat Jun 13 2020