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Thread: Fire Fighting System.
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21st Apr 2022, 02:11 PM #46Senior Member
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21st Apr 2022, 02:16 PM #47Senior Member
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21st Apr 2022, 02:19 PM #48Senior Member
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Hi, it won't be mounted on a vehicle. It will sit under cover and only be dragged to the fire tank once per month to run for five minutes. I call the sickle a brush hook. Very hard to find, no one makes good ones anymore. That one cost me 70 bucks.
The fire hose is 50m ... I don't think you can get 50m anymore, only 30. The reel works fine and I've run it in and out for testing now3 many times.
I kept the hose at the bottom of the reel, because if I'd come off the top and it jammed or something it would pull the chassis over and bugger the motor.
Greg
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21st Apr 2022, 03:43 PM #49Senior Member
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The fire hose nozzle can push out about 15metres. It also has a deluge function so you can soak yourself if you're caught. The reel has to be unrolled before using, and has to be pressurised to roll it up (prevents knots and twists).
I tried to upload the vudeo here but gave it up. Just kept failing so posted it to Youtube instead. Just a short iPhone clip.
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22nd Apr 2022, 11:07 AM #50Most Valued Member
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- Jul 2010
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Took a guess when I saw your beautifully constructed drip torch holder.
Thanks, my father may have had one, emailed my brother to see if he has it. Yes the ones I have found don't look as nice as yours. I might give one of the Fiskers a try if my brother comes up empty.
I have enough trouble lifting the 36m ones, so that put me off buying a 50m one(which I have seen on ebay not to long ago). I doubt there is any need to have the 50m one now I have two 36m ones.
The construction of your reel different to mine.
*edit* seems whats below is incorrect, so read the following post
For anyone following along, to add a tip Simon's about dead heading the pump. I'd always run a 3/4" line to the tank so I don't dead head the pump(likely not opened fully most of the time). "That's enough to unload the pump for starting right?" "Wrong!". Starting had always been a bit harder than I would have liked, when I finally got around to having a good think about/fix it, I thought "I'll just try opening the 1 1/2" outlet", starting problems fixed .Last edited by Stustoys; 22nd Apr 2022 at 02:23 PM. Reason: edit
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22nd Apr 2022, 01:46 PM #51Most Valued Member
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Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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22nd Apr 2022, 02:20 PM #52Most Valued Member
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Hi Simon,
I had meant to ask that more as a question. I'm aware of what you are saying being the case with centrifugal fans(and while I cant get my head around it ATM, it does all make sense when I read up on it).
So you are saying it should be easier to start with everything shut? Its setup ATM I may have to do a few tests. Even since I started opening the 1 1/2" outlet its started on the second pull, maybe the power of positive thinking(or perhaps confirmation bias)
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22nd Apr 2022, 02:51 PM #53Most Valued Member
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That's correct Stu. It would be different if it was a positive displacement pump such as a piston pump etc.
If you have your pump running at full throttle and delivering a reasonable amount of water, when you close the delivery and shut off the water, you can hear the engine unload and if it wasn't for the governor in the engine, it would actually rev higher because of no
load.
Conversely, if you open a large delivery very quickly, you will hear the extra load on the engine. Pressure AND flow is where the engine does it's work. The analogy is the same with a generator. Start it up with the switch off and there is no load on the engine. The voltage still shows 240V but no current (flow) so the engine essentially does no work (well within reason)
With pumps, when all deliveries are closed, the only energy that the engine looses to the system is via friction. That's why the water will eventually heat up after an hour or so with all deliveries closed.
SimonGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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22nd Apr 2022, 04:25 PM #54Senior Member
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It started out as a fire-bug bracket with a lifting handle to match the 16mm bar-handle on the other side of the hose reel ... but my angle grinder got a little carried away .. hehee
945E74AE-D33F-44C1-B29D-404987F880B3.jpg 432D2BDC-DEC1-4BBD-97AE-3F0E9B4D4937.jpg
The brush hook is needed on my place for the lantana, to cut into it, to spray it. So it needs to be an old one because of the hardened steel. But for the once off bush-fire use then there are Chinese ones you get much cheaper. Equipment Steel in Kingaroy has, or had, a range of Chinese replacement manual tools. My crow bar is Chinese, it's ok for post hole digging, it bends a bit but easy to straighten
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22nd Apr 2022, 07:38 PM #55Most Valued Member
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Well its still doing my head in.
It seems possible my starting issues may have been self inflicted. I went down to have a play earlier, pulling it over gently one handed a couple of times and the damn thing started. Seems to start with a gentle pull no matter what I do with the valves. I wonder if its possible that pulling to hard messes with the decompression setup?(although last time I thought I worked something like that out it turned out I was wrong lol. Thank you)
Doesn't get lantana down here that I have seen, but I think it might be handy to use on dead blackberry, the stuff I can't run over with my 4WD.
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22nd Apr 2022, 08:24 PM #56Most Valued Member
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What sort of pump is it Stu?
Sent from a galaxy far far awayGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
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22nd Apr 2022, 08:48 PM #57Most Valued Member
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- Nov 2007
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I start mine with the pump dry. When it’s running I open the ball valve at the inlet. When I’m finished I drain the pump housing.
Chris
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22nd Apr 2022, 10:15 PM #58Most Valued Member
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22nd Apr 2022, 10:16 PM #59Most Valued Member
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To back up one. Is that at a fair bit of throttle? Most of the running my pump does is barely above idle.
It seems I may have taken the "don't dead head the pump you will overheat it" a little to seriously
Your standard twin impeller 6.5hp
That's an option if it came to a fire and I was using it on the tanks but I am normally pumping out of a damn/creek and have primed the hose/pump from an IBC(because its easier that filling the pump and waiting for it to prime the hose).
It seems I may have taken the "don't run the pump dry" a little to seriously.
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23rd Apr 2022, 08:44 AM #60Most Valued Member
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Thanks John. It's only a few seconds between starting and opening the valve, but I take your point. I just checked the Davey manual and there is a note about running the pump dry for "extended periods". It doesn't define how long that it is, but in future I'll prime the pump with a short burst of water by cracking the inlet valve. Since the tank water-line is above the pump, it primes almost immediately.
Whatever procedure I use has to make it easy to start the pump, because there's a chance I won't be home when it's needed and my wife will be doing it.Chris
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