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TOPIC: 12V Delavan FATBOY 7gpm pump


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Date: Nov 2, 2009
RE: 12V Delavan FATBOY 7gpm pump
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marrodr wrote:

Gents, I really like this setup (Yamada air diaphram & air compressor)and am looking into purchasing & installing in my enclosed trailer.  My problem will be lack of space, depending on the air compressor.  But one newbie question bothers me.....  please explain why it would or it would not be recommended to do the following:


I have a great pressure washer, may as well use it, but not to pressure wash the roof.  Instead, could I simply attach a stainless steel foaming wand to the trigger gun?  I'm researching this right now from  a specific company I've dealt with in the past.  This specific foaming wand can spray 30-40ft, as long as it gets over 4gpm of water from the pressure washer.  The wand itself has a chemical suction tube that can go directly into the LOVE, as long as you use the right metering tip for proper dilution.  Does this sound retarded, or worth looking into?  I'll try to post a picture of a sample foaming wand spraying the side of a house.  Your input is much appreciated, just don't beat me up too hard.  Thank you all! 






Won't work well, the love needs to be stronger to work. Plus it will quickly destroy your pump seals and packing. Keep reading on this site...

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Excellent.  So just keep the "downstreaming" for walls or anything that requires above 10:1 dilution ratio.  Thank you!



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Last week I purchased from Lori, a Delavan 5850 and a Delavan Fat boy, along with 200'  of 5/8 and 200' of 3/4 hose. Built my rig and did my first roof Sunday. Worked great, except I needed just a little more distance. Running just the Fat Boy. Today, I spoke with Lori's dad and asked him if it was possible toe hook both of those pumps in sequence. He said no one had ever tried it as far as he knew, so I tried it.  Fed the Fat Boy with the 5850, 3/4 hose in and out on both pumps. The only difference was a stronger stream,(more flow) with NO difference in distance. Flow I already had plenty, so I dismantled it and went back to the orginial set up. Guess I'll play around with tips and se if I can get another 10' distance.  Any ideas or proven info?
Thanks
Gary
yawn

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Are any of your connectors restricting to less than the 3/4" or 5/8"? 

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All connections are 3/4", and only one 90* fitting in the whole system. I've got plenty of flow. Just need a little more distance. Probably just a "tip" issue that us "newbies" don't quite understand yet. Any suggestions?
Garyyawn

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garyw wrote:

Last week I purchased from Lori, a Delavan 5850 and a Delavan Fat boy, along with 200'  of 5/8 and 200' of 3/4 hose. Built my rig and did my first roof Sunday. Worked great, except I needed just a little more distance. Running just the Fat Boy. Today, I spoke with Lori's dad and asked him if it was possible toe hook both of those pumps in sequence. He said no one had ever tried it as far as he knew, so I tried it.  Fed the Fat Boy with the 5850, 3/4 hose in and out on both pumps. The only difference was a stronger stream,(more flow) with NO difference in distance. Flow I already had plenty, so I dismantled it and went back to the orginial set up. Guess I'll play around with tips and se if I can get another 10' distance.  Any ideas or proven info?
Thanks
Gary
yawn






What nozzles are you using?

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Grand Rapids, MI 49525


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Roof Washing Exterior House Cleaning Grand Rapids, MI



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i know some guys say it wont work but this is what worked for me when i started. take your two pumps feed each one in to the tank seperatly then connect them with a tee before the reel i was using two cheep 2.2 @ 70psi on demand northern tool pumps i kept them around for a backup untill the SH killed them 

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the reason this dual pump setup works is  because if you double the volume at the same PSI you get more distance it least i did. It didnt double the distance but i got another ten feet or so  

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Date: Nov 3, 2009
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garyw wrote:

Last week I purchased from Lori, a Delavan 5850 and a Delavan Fat boy, along with 200'  of 5/8 and 200' of 3/4 hose. Built my rig and did my first roof Sunday. Worked great, except I needed just a little more distance. Running just the Fat Boy. Today, I spoke with Lori's dad and asked him if it was possible toe hook both of those pumps in sequence. He said no one had ever tried it as far as he knew, so I tried it.  Fed the Fat Boy with the 5850, 3/4 hose in and out on both pumps. The only difference was a stronger stream,(more flow) with NO difference in distance. Flow I already had plenty, so I dismantled it and went back to the orginial set up. Guess I'll play around with tips and se if I can get another 10' distance.  Any ideas or proven info?
Thanks
Gary
yawn




The shorter the hose, and the fatter it is, the farther it will shoot.
I know a guy who uses a shorter, fatter, shoot hose only when he wants max shooting  distance.
He uses only 125 feet of ONE INCH Kurri Tec HOSE, and 1 inch ball valve with a small rifle type wand made out of PVC.
He swears by it.




 



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Can I ask the question, What do you guy's think is more important, hose Dia? or pressure? in regards to getting more distance from the knozzle and wetting the roof enough to do it's work.

Is it when running lower psi pumps that the more volume provides the distance hence running a 3/4 hose or running a higher psi pump with lower volume using a smaller diameter hose 1/2 inch 5/8 etc.

Would it be that running a higher psi pump and lower flows also save on chemicals \? The reason I ask is because in another life I use to run a large air compressor with 3/4 hose on it and after a while dragging that size hose around became a real pain in the azz, a small diamiter hose would be easier to handle

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idontknow wrote:

Can I ask the question, What do you guy's think is more important, hose Dia? or pressure? in regards to getting more distance from the knozzle and wetting the roof enough to do it's work.

Is it when running lower psi pumps that the more volume provides the distance hence running a 3/4 hose or running a higher psi pump with lower volume using a smaller diameter hose 1/2 inch 5/8 etc.

Would it be that running a higher psi pump and lower flows also save on chemicals \? The reason I ask is because in another life I use to run a large air compressor with 3/4 hose on it and after a while dragging that size hose around became a real pain in the azz, a small diamiter hose would be easier to handle




Unfortunately, the pumps we use for roof cleaning do not have much pressure.
So, unlike pressure cleaning, where you have 3000 PSI to pizz away, we need to keep flow and pressure loss to an absolute minimum.

We do this with fat diameter hose, and try to keep it as short as is practical.

BTW, it takes both flow and pressure to shoot chemical any distance.

The pressure starts the chemical shooting, and the flow maintains the stream.

I always suggest pulling all the hose you need up on the roof.
So, once you go up the ladder, go to the farthest away place on the roof from the ladder, if possible ?

Then, pull up another 5 feet of hose, just in case.

The fat hose is now on the roof, lying there like a big python snake sunning itself.

Fat hose tends to stay put on a roof, and does not find it's way under roofing shingles.

Hundreds of roof cleaners use 5/8 and 3/4 hose on a daily basis.

It is not a PITA

IMHO, a PITA is small diameter restrictive hose, that chokes your pump, slows ya down!

Every extra minute you are needlessly on a roof, your Lungs are slowly Frying!

We teach our roof cleaners speed, so they have more time to spend all that money ?

And, we want them to be competitive.

Running a dinky little pump and small hose here in Florida, is like David trying to fight Goliath w/o Gods help.

Big Pumps, Fat Hoses, Big Tanks, that is the RCIA way to clean roofs.

Many of us here at RCIA are pioneers of the roof cleaning art.

It is good you are asking questions, but you need not re invent the wheel.

Back when many of us started, there was no Roof Cleaning Forum, or anyone to answer these questions.

Roof Cleaning was a closely guarded secret, known only to a few, and they weren't talking.

Now, all ya have to do is simply duplicate the roof cleaning equipment we have, and go get paid!

The cost for all this roof cleaning knowledge is absolutely nothing.

And, if you are not 100% satisfied, we will gladly "refund your tuition"

People here operate on kind of an "honor system".

We teach them to clean roofs, and be a success, they go out and do it,.
They seem to come back and contribute to the cost of running this forum.

But ONLY if they want, it is entirely voluntary.

Welcome to the Forum, and we will help and guide you to being equal to the best roof cleaners in your area, IF there are any in your area.





 



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Chris,

I realy appreciate your comments, reading through this board I can understand why every one likes you, you seem like a hell of a nice guy and the information you share is worth it's weight in gold, Thank you

Now with out sounding like a wanker, the reason I am asking these questions is that here in the land down under things are a bit different, for instants the Delevan fatboy pump you guy's pay $200 for costs me $850, but for around $250 I can buy a new diaphragm type sprayer pump used for weed spraying and spot spraying. Delivering up to 30 litres per minute (8 gpm) at pressures between 10 psi and 250 psi the pump is fitted with a contol and bypass valve that allows the variations required for different conditions, with out drive motor of course, So I figured if I could use it at say 100 - 200psi pressure then I could reduce the hose size a little.

I live in a semi tropical environment with a steady 80 deg temp all year through (shorts & T shirts all year) roof cleaning is almost non existant around here but "every roof" I see has dirt & mold on it (mostly tiles) as far as I can see if I get get my act together I could create my self a nice little earner. when I first came across this forum my eyes bulged out like some one had stod on a frog I saw the potential roof cleaning could have around here, just have to try and set it up for the right price.

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idontknow wrote:

Chris,

I realy appreciate your comments, reading through this board I can understand why every one likes you, you seem like a hell of a nice guy and the information you share is worth it's weight in gold, Thank you

Now with out sounding like a wanker, the reason I am asking these questions is that here in the land down under things are a bit different, for instants the Delevan fatboy pump you guy's pay $200 for costs me $850, but for around $250 I can buy a new diaphragm type sprayer pump used for weed spraying and spot spraying. Delivering up to 30 litres per minute (8 gpm) at pressures between 10 psi and 250 psi the pump is fitted with a contol and bypass valve that allows the variations required for different conditions, with out drive motor of course, So I figured if I could use it at say 100 - 200psi pressure then I could reduce the hose size a little.

I live in a semi tropical environment with a steady 80 deg temp all year through (shorts & T shirts all year) roof cleaning is almost non existant around here but "every roof" I see has dirt & mold on it (mostly tiles) as far as I can see if I get get my act together I could create my self a nice little earner. when I first came across this forum my eyes bulged out like some one had stod on a frog I saw the potential roof cleaning could have around here, just have to try and set it up for the right price.




Most diapraghm type pumps will not hold up, except air powered diapraghm pumps.
And yes, with that amount of pressure, 1/2 inch hose will work fine.
1/2 inch hose will even work on an air diapraghm pump like the Yamada's and All Flows.
5/8 and 3/4 hose just work much better .

Roof Cleaning Australia looks like a Mate could earn him a Fosters or two ?

Speaking of Australia, I was just listening to the AUSTRALIAN BANDS "Midnight Oil" and "Men at Work"

I think Chawamba or Chawabamba is also an Australian Band.

Remember them ?

" I get knocked down, but I get up again" and then the girl sings "Pizzing the night away, pizzing the night away"

I think they are from Australia too ?

Let's hope they aint Kiwi's ??

No Worries !

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Mike can you explain to me why there is so much hipe about using 3/4 inch hose with this pump.  I bought one a month ago and the manufacturer says 1/2 inch hose is fine. I bought 5/8 hose just to be sure, but when I was hooking it all up the inlet and out let are 1/2" now that would tell me that the flow is going to get restricted right of the bat.  Also all connections like hose reels or ends are 1/2" so I would say 3/4 will give you more volume. I don't know how it works.  I do know that my pump doesn't shoot 25 feet.  Maybe 15 feet and I'm using 5/8 hose. Any thing you can do to clear this up for me would be great. Thanks,Doug



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Roof Cleaning Toledo Ohio (419) 265-3306 wrote:

Mike can you explain to me why there is so much hipe about using 3/4 inch hose with this pump.  I bought one a month ago and the manufacturer says 1/2 inch hose is fine. I bought 5/8 hose just to be sure, but when I was hooking it all up the inlet and out let are 1/2" now that would tell me that the flow is going to get restricted right of the bat.  Also all connections like hose reels or ends are 1/2" so I would say 3/4 will give you more volume. I don't know how it works.  I do know that my pump doesn't shoot 25 feet.  Maybe 15 feet and I'm using 5/8 hose. Any thing you can do to clear this up for me would be great. Thanks,Doug




Here is a good way to "convince yourself ?
Take some 3/8 garden hose, 100 feet of it, and hook it to an outdoor spicket ?
Then, take the same lingth of 5/8 garden hose, and watch the difference ?
Now, the inside water pipe is the same, smaller diameter,, butthe bigger hose works better.
Why ?
Because the TOTAL resistance to flow is expressed  as a series equation, where every component in the flow chain makes up only a small part of the whole.

So, the 28 inch long 1/2 inch diameter manifolds of our Titan Hose Reels only make up a small fraction of the total 300 foot hose length.
5/8 hose will work good on a delavan, 3/4 even better.
1 inch better still.
But we reach a practical hose size, that I feel is 5/8 for MY use.
IF I were using a delavan, I would use 3/4 hose, because it has less pressure to pizz away the  air pumps we use.


 

 



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711 Westbrook

Brandon, FL 33511

813 655 8777

See our website here 

Click here for more information

Here are more of our services

Watch a short video

 




 



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Roof Cleaning Toledo Ohio (419) 265-3306 wrote:

Mike can you explain to me why there is so much hipe about using 3/4 inch hose with this pump.  I bought one a month ago and the manufacturer says 1/2 inch hose is fine. I bought 5/8 hose just to be sure, but when I was hooking it all up the inlet and out let are 1/2" now that would tell me that the flow is going to get restricted right of the bat.  Also all connections like hose reels or ends are 1/2" so I would say 3/4 will give you more volume. I don't know how it works.  I do know that my pump doesn't shoot 25 feet.  Maybe 15 feet and I'm using 5/8 hose. Any thing you can do to clear this up for me would be great. Thanks,Doug



If your "fatboy" is only shooting 15' you have some sort of problem with your set up. I run a "fatboy" with 200' of 3/4" hose, using anywhere from #40 to #60 tips and I can shoot clean over the roof on the average ranch type home, or end to end if necessary.
What types of fittings are you using? The more 45's, 90's etc. you have the less flow.
What size wire are you using for power? May not be getting the full 12 volts to the motor.
What size qwik-connects are you using for your tips? half inch work better that quarters.

Any and/or combination of these could be part of your problem.
Hope this helps.

 



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Date: Dec 4, 2009
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Roof Cleaning Toledo Ohio (419) 265-3306 wrote:
Mike can you explain to me why there is so much hipe about using 3/4 inch hose with this pump.  I bought one a month ago and the manufacturer says 1/2 inch hose is fine. I bought 5/8 hose just to be sure, but when I was hooking it all up the inlet and out let are 1/2" now that would tell me that the flow is going to get restricted right of the bat.  Also all connections like hose reels or ends are 1/2" so I would say 3/4 will give you more volume. I don't know how it works.  I do know that my pump doesn't shoot 25 feet.  Maybe 15 feet and I'm using 5/8 hose. Any thing you can do to clear this up for me would be great. Thanks,Doug

No hype, just physics.

Compare these two fittings:

1/2" Male pipe thread x 1/2" barb with a 1/2" Male pipe thread x 3/4" barb.

You will see exactly what I am talking about.

1/2" MPT X 3/4" barb is what you need to connect your pump to your hose.

Like Gary said, the problem might be your nozzles, valve, wire or battery, and your hose.

Install it exactly like I suggest, and you won't have problems.

Mine is still going strong since I bought it last year.



-- Edited by Roof Cleaning Pro Greensboro NC (336)362 7659 on Friday 4th of December 2009 11:33:34 PM

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Hello thank you again to the vetrans of this site that laid the foundation for all this to be possible "you will not be forgotten." I'm asking about the 12 volt Delavan 7gpm is there a pictorial chart how to set up the pump from a -z thank you for the help.

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This is probably the best thing out there showing how to hook up your roof cleaning pump.  This is Bob from Pressure Tek.  He sells the Fat Boys and is very knowledgable. 

http://www.youtube.com/watch?v=aGu3Lyr6B_c



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Midwest Improvement Services

Roof Cleaning Ohio

Ohio Roofing

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Working on replacing our old pump with a Fat Boy.  I remember reading a post saying that it was best to mount the Fat Boy upside down.  From the pics, it looked more like it was on the "side" of the box it was in.  The video from Bob at Pressure Tek shows it mounted on the bottom of the box.  Anyone have any input? 

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Midwest Improvement Services

Roof Cleaning Ohio

Ohio Roofing

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