Newest Custom Build Project for Green Knight, LLC

Hardwaresteve

Hardwaresteve

New member
We have just been commissioned to build an under the box, diesel powered hot water pressure washer. Here is the starting picture for this custom job, I will post the finished picture in 10-14 business days. If this was your project what would you like to see? This unit will use the trucks battery and pull fuel from the saddle tanks for both the motor and the burner. Hose reels will be mounted under the truck on both sides allowing you to switch from one side to another. Other features will include a antifreeze setup, TS2021 General Pump, and slide out access to service the pump and motor.

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That sounds like a great project. Is there enough clearance between the truck bed and the road for this?

I would think that the burner itself will be at least 18" in diameter and the diesel engine and radiator will be at least 20" tall not leaving a whole lot of room if this is a regular box truck like a F350, D3500 or C3500.

I could be wrong but just thinking about this.
 
Hardwaresteve said:
We have just been commissioned to build an under the box, diesel powered hot water pressure washer. Here is the starting picture for this custom job, I will post the finished picture in 10-14 business days. If this was your project what would you like to see? This unit will use the trucks battery and pull fuel from the saddle tanks for both the motor and the burner. Hose reels will be mounted under the truck on both sides allowing you to switch from one side to another. Other features will include a antifreeze setup, TS2021 General Pump, and slide out access to service the pump and motor.

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what would I like to see ?? How about that set up under MY box lol. how about wrap it up in a lockabl box with a small little storage spot for extra oil and a small tool box.
 
I find pulling from both saddle tanks not exactly the most ideal situation as it can lead to problems with fuel supply depending on the operator. If it was me, I would use one tank to pull fuel for the truck, and the other tank for the pressure washer. You can then use marked diesel in the one tank and save some money and not have to worry about an operator not leaving enough fuel to get home.

The burner underneath, I am interested in seeing that as I know there are many complications with exhaust and heat.
 
Every machine we sell is built by us....most of what we do is custom. We have some "stock" units that have been popular, mainly the "Gauntlet" which is what is currently displayed on our website under customs. It is a dual gun unit that can be built to spec with diesel or gas engines and pumps that meet the customers needs. We cut our teeth in this industry working with the oil and gas industries of Texas, Oklahoma, Arkansas, and Louisiana, and in that market everything has to be tougher, stronger, and easy to work on. We like existing "out of the box" and tackling the unusual!
 
Christopher said:
That sounds like a great project. Is there enough clearance between the truck bed and the road for this?

I would think that the burner itself will be at least 18" in diameter and the diesel engine and radiator will be at least 20" tall not leaving a whole lot of room if this is a regular box truck like a F350, D3500 or C3500.

I could be wrong but just thinking about this.
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To answer your questions, the motor is air cooled, so no radiator, and the coil diameter is 14", and if you look in the right hand corner of the picture you will see one of the saddle tanks and a step. The box itself is waist high on me and I am over 6' tall, so we have two foot of height and the distance from the front of the box back at least 5'. So we have more lateral space than height to work with. Additionally there will be skid plates to protect the unit. I admit its going to be interesting to see it all come together....and I will be sure to update folks as it does!
 
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Looking forward to it. One more question. Your custom builds, are they completely custom as you are the one making all of the parts (eg: power Washer) or is it that you're using different parts from manufacturers and putting them in the trailer? Like for example if I wanted to get a custom trailer from you, but said I wanted a Hydrotek in there would you be able to put one in there or would you be able to make your own power washer to put in the trailer?
 
We would be making it. We don't use any other companies completed units. We make every one of our pressure washers, (that's not obviously some components for example the motor or the pumps). We weld our frames, fuel tanks, even water tanks, pulls, mounts, etc. We wire everything, and make all the design changes on scratch paper and dry erase boards, do the math on HP, GPM, and PSI. We strongly dislike proprietary parts like you find on a lot of equipment these days, and we design everything to be as easy to troubleshoot, reach, and repair as possible. We powder coat all mild steel and use stainless steel where we can. We don't over engineer equipment to the point a mad scientist has to fix it, but we do engineer it to last for years. We specialize in the unique design needs of our customers.
 
From the pictures on the website, you have changed a lot from this early version. I was going to mention everything from turning the burners 180' to using the mounting block for the unloader.
Couple idea's for you to ponder and think about.

Fuel filters for the burner, those premium cheap ones are one time use and can be hard to find. Easier to install a racor, or something similar that the customer can have and easily just spin on a new filter and be done. 4x the upfront cost, way easier down the road.

Guages, don't see any, water pressure off the pump and fuel pressure on the burner will help the customer and you when figuring out issues down the road. When a customer call about the burner not working you can ask them what the fuel pressure gauge says and eliminate the stupid items like a plugged filter or out of diesel over the phone.

Dual feed the pumps I have always heard and been told. Anything over I think 5 gpm and you should be dual feeding them. I am pretty sure those are TS2021's in the photo's, I would still recommend the dual feed for better reliability and happy customers.

Maybe put a ball valve and a few check valves in a be able to combine the 2 wands to either side. This would allow a single operator to essentially double their GPM's for a quicker rinse, surface cleaning, ect.

Most things mentioned are small items, anything else would be personal preference or what works best for me.

I am assuming you guys are using positive air shut offs for the diesel engines are they much more expensive then ones for the pickups?
 
I appreciate the input! Couple of notes about your comments, first off this is an oilfield unit, and it was built per spec for the customer. He likes the smaller fuel filter because he can walk around the unit and can see the filter is dirty and change it quickly, not something you can do with the racors. The gauges are an options. I have never seen a ts2021 dual fed without there being a reason like a long distance to the tank or a problem with cavitation from using 1/2" or 5/8" line (we use 3/4") we dual plumb anything 6 gpm and up as a rule of thumb. Splitting a pump is okay in certain applications but in the oilfield it is a big no no. When you split a pump you lose half your GPM's and keep the same pressure, however with that being said we can and have done split pumps. Chalwyn valves are optional, we have used a them rarely, nobody uses them down here, in fact the only diesel pressure washer I have ever seen one on was one we built and sent to Pennsylvania and was used because the customer was required to have it by there customer. You made some really good points, and as with anything we build the customer gets to make decisions about their machine, as long as its not detrimental to the end result!
 
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