before the modification this Franco bells the rain used to chew through a hell of a lot of wood light wood pine and cedar I would just roll up the chimney you could actually hear the flames roaring and you wouldn't get this ash buildup in the bottom of the pan in fact you know it was very hard to keep the firing because she would constantly be relighting it because he would burn out very quickly one is out at the back was this metal plate and the gap you have a gap at the bottom there over the top of this this is your the boiler pipe and the bottom is actually on either side of the fire as well and there's another boiler pipe at the top there but when you take you take away this this point is just a silicon show merely one of the first modifications I did was to cut a little notch at either end of the plate and this would reduce the gap between the back boiler pipe which joins the both sides and the can the plate but the plate would buckle as well so very not very good design and if we look at the back of the fire yeah you've got your chimney pipe or the flue and there was nothing to stop it and nothing to slow down the the movement of air and smoke through the chimney you is three stainless steel pipe that is perforated pipe the idea was that the smoke and the air would actually mix and burn inside this pipe instead of going straight off the chimney so it would slow the flames down stop the roar in and unnecessary waste of wood Oh this is a perforated tube which we got from eBay and this is just a piece of wire which we've bent the perforated tube you made to clean regularly nice can be done with another five brush so clean all that round this was the original plate if anyone's had a Franco that was the rain and fire another this thing is falling off and we'll also another type I of Burns feel a tremendous amount of wood and this pretty inefficient but with this modification now I fish through the little hole in the doors as such by pulling you can draw the gas through the fire and then push it in and you can actually regulate the amount of smoke that goes out through the directly through the through the chimney and the smoke circulates through the tube and the tube is your secondary combustion as you can see to clean burn now and the five fires behaving completely different so I lit out the old throat plate we just go and check the tune you know the end of the tube has been pinned over both ends and this makes it less likely to stick and the tube is obviously shorter than the width of the fire to enable to get it past the plus the two brackets the hole the place so it goes up into the corner and I just sitting there nicely the perforated stainless steel tube comes with a straight socket we need two penis or bevel this edge over Bobby some usually I'll spy my own device you need to be patient but as you can see it's forming nicely and we'll turn that right in and we'll do the same with the other side and when this is putting volume and pushed out of the fire to actually restrict the airflow the edges won't catch at first but kindling has been cleared normally the fire would have burnt away they came in very quickly but even the King Lim has managed to heat the file is already getting nice and hot so I wanna price-cutting pull out the stainless steel chain that we put in I'd go in your door without causing any smoke and the simple modification to the Frankel bells Loraine is in a three inch stainless steel perforated to the type of tubing that's used to repair exhaust systems could be applicable to almost any of the older type inefficient log burners if you haven't got the angle brackets on the sides which were used in the franco bells to accommodate the throat plate you can always add and improvise a couple of angle iron brackets bolting through the sides very very simple modification but stay tuned because there's more to follow the next part will show how we can add secondary combustion by introducing supey got air with a stainless steel three-quarter inch tube system with a regulator valve on the outside but as you can see with the log burner in the background the kindling are soon caught and the fire is is filling up all of the box including most of all the opera's space of the fire where you see a lot more activity with the flames this is caused through gasification of the wood because the fire heats up quicker the hot temperature inside the inside the furnace where this is more gas from the from the timber that we're burning so makes it even more efficient and of course the the throat plate gun and the introduction of the stainless steel tube what we now see is a much slower flame with more activity at the top end of the very impressed but you'll be even more impressed when you see the next modification the footage here is not being accelerated or or slaughtered down that's what you've seen there is Kindle about it which is which managed to heat up the fire and the first fueling with what would have been that scrap wood mostly pine and previously would burn away no table at all but in this instance we see it lasted a long time whereas before I would come down with four carrier bag Falls of wood to get us through the day we know most heat the whole axle with a single cam whether the large supermarket carrier bags you know the rugged ones and one of those filled with the scrap wood and the glasses all evening since installing the log burner and collecting the wood for free throughout the year my heating bill because this boiler runs my hot water system and runs all my radiators in the wintertime so my gas bill now has been reduced to around 14 pound for 3 months you know this is a considerable saving and once you make a saving like this and you can use that money that you've saved to make another modification which again has a knock-on effect to your budget for example I created my own a solar panel which I made even more efficient than the normal solar panels this is a thermal solar power by heating of water up during the summer months when the sun's out but you'll find this next modification to this Franco Belle's Lorraine very interesting so stay tuned coming up next we've installed a perforated tube at the back of the fire so now we need to make sure that we're getting enough air heated air to the perforated plug so the superheat air flew to the perforated pipe that we have in place what we intend to do now is to use 3/4 stainless steel threaded tube fittings which we got from eBay they came from China and they cost me 20 quid including the postage so we have a full bore isolation valve which we can use to regulate the flow of air through as you can see that that's full bore so we don't lose any of the air and then we're having a feed pipe which will go through which will go through to the tube and then a shorter length of pipe which will mean we'll need to drill a hole through the cast iron back and taking care not to affect the water jacket for the heater so this will be drilled through the side here and again make sure that you will probably the griddle rails that you know the front grid rails and all we need to do enemies to draw over and probably need to foil it out as well but you can see where I've marked it inside so once you have your pilot hole through so I said smaller job and you need to make the hole progressively bigger with foil the whole edge just took forever but got the right diameter now for the pipe and this is the stainless steel hot air supply for the for the tube that we have inside and as you can see two elbows and a 6 inch piece of tube and a 3-inch piece of 30 tube this we've had to file a little bit of a notch out of the out of the wall there and they've also filed a notch out of the part of the 90 degree Bend mayor so that it fits nice and snugly just up with you city duster fit up not much there that's right on this side I have today off oh I've got a brass brass union this is from a compression joint and the file the inside away so they fit snugly over the pipe and this will be my washer but also just to seal the Silvia the thread have a little bit of fiberglass fiberglass wall and this is the stuff with use on on fire I'll just trim that off there's plenty on there and that'll be the seal now that goes in there I just it does fit nice and snugly in there and then just make sure you got this a long way around job done the third elbow joint was added and also an extra length of six inch threaded stainless steel tubing to Brimley the air intake into the center and the elbow was introduced to actually directly the airflow straight into the tube sure now what we see is the flames are getting very excited around me the elbow on the nipple that we've added to to introduce the air to the stainless steel tube looking very interesting how far is even more efficient now secondary combustion has been achieved gasification has been achieved and if you look carefully you can see some of the smoke is actually traveling down instead of up and down through the chimney so again the the the smoke and the gases are being recirculated in the firebox instead of in the chimney these old log burners are fantastic the Franco beltrane included my Franco pals Lorena show Nia absolutely Stein you know it just seems a shame that these these boilers have been up on a stroll of Bones have been taken out simply because the efficiency was not good and we've been sold allegedly super efficient boilers and log burn as when a simple modification can produce the same results ironically this gorgeous Franco causal rain violent assault to us by a gentleman who work for the Environment Agency and he admitted that this this this log burner was wholly inefficient and will get through a ridiculous amount of logs and the one that he changed it for was super efficient had secondary combustion and cause gasification of the wood so that got me to thinking how could I introduce it to the old tronco bells Lorraine and greatly respect for all of the people that uploaded video showing how they'd achieved secondary combustion gasification without your help I wouldn't have been able to make this video all these upgrades thank you very much this fire was lit 15 minutes ago you can still see some of the paper hasn't burned yet 25 minutes into the fire you can see the flames are really excited in the top of the box especially dancing around the end of the pipe where we feeding the airing I'm very - sipping going 20 minutes and it's called with a water so not only is it he cannot fire boxes he doctor radiates on the water time 30 minutes into a fire virtually no smoke smokes a funk out those the rain thank you for watching my video hope you find this useful be sure to watch my other videos happy Christmas in the Happy New Year and the warmer has