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Mack R-model Engine Tanker 27(update 4/7/18)


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7 hours ago, Sergey said:

O-key! Finally, the main goal is to get what you want.

i sincerely hope i didn't offend you with my comment. I was on my way out for work & made a quick reply. This is my first time using lighting & still working the bugs out. I would love to read your article to learn more. I consider you one of our top builders on this site& have learned from your builds. As a matter of fact i plan on doing The Love Machine from Convoy soon & will use yours to learn from. Mine won't go to the detail level of yours though. But back to the topic, Just wanted to apologize if i upset you. I will take more time when i comment in the future!  Always look forward to your builds also!

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 Spent most of the Easter weekend working on the tail end of this truck.   Finished the step bumper and lights. Need to add some of the plumbing. This truck has a Newton dump in each of the rear compartments, plus a round dump on the rear that needs completed yet!

IMG_20180401_151717802.jpg

Edited by towman1271
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On 28.03.2018 at 9:25 PM, towman1271 said:

i sincerely hope i didn't offend you with my comment. ....Just wanted to apologize if i upset you. I will take more time when i comment in the future!  

That's O-key! Nothing to appologize for. 

Do you plan to use more LEDs? I guess the power source is 9V battery and you have 2 parallel circuits?

By the way, what is Newton dump?

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3 hours ago, Sergey said:

That's O-key! Nothing to appologize for. 

Do you plan to use more LEDs? I guess the power source is 9V battery and you have 2 parallel circuits?

By the way, what is Newton dump?

The lights on the tank will be led's also & will run off a 9v.  As for a Newton dump valve! It is a manual valve we use on fire tankers as a quick release to rapidly drain water to a portable tank. We live in a very rural area where water is trucked to house fires, dumped quickly in these portable tanks so fire engines can pump it on the fire. I downloaded two pics to show you. The first is a truck dumping into the portable tank, the second is truck similar to ours were to valve is hidden in a side compartment!  The truck i am building halls 2500 gallons of water, or approx. 9500 liters

imagesK929IM0T.jpg

imagesdump.jpg

Edited by towman1271
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17 hours ago, towman1271 said:

The lights on the tank will be led's also & will run off a 9v.  As for a Newton dump valve! It is a manual valve we use on fire tankers as a quick release to rapidly drain water to a portable tank. We live in a very rural area where water is trucked to house fires, dumped quickly in these portable tanks so fire engines can pump it on the fire.

I see.

You must know: 9V battery have small capacity and as more parallel circuits you make, as short their working time. This power source is O-key for photo session, but not for  exhibition. I guess battery have 0,6-0,8 A/h. Each LED circuit eat 0,02 A. If you have 1 circuit, lights will work about 30-40 hours. If 2 circuits - about 15-20 hours.

I guess your white LEDs need 3V - each, and red one - about 1,7V. I would change white emergancy light for blue LED. It usually needs 2-3V. I had both voltages blue LEDs.

Probably tank light will be red? I don't know how much space you have for power source? And how much LEDs wiil tank have? And main question: how long you want to lights work?

By the way, nice looking tank!

Edited by Sergey
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23 hours ago, Sergey said:

I see.

You must know: 9V battery have small capacity and as more parallel circuits you make, as short their working time. This power source is O-key for photo session, but not for  exhibition. I guess battery have 0,6-0,8 A/h. Each LED circuit eat 0,02 A. If you have 1 circuit, lights will work about 30-40 hours. If 2 circuits - about 15-20 hours.

I guess your white LEDs need 3V - each, and red one - about 1,7V. I would change white emergancy light for blue LED. It usually needs 2-3V. I had both voltages blue LEDs.

Probably tank light will be red? I don't know how much space you have for power source? And how much LEDs wiil tank have? And main question: how long you want to lights work?

By the way, nice looking tank!

I won't really be using the LEDs for any real length of time. But are you suggesting I use multiple batteries on separate circuits. I would have space on each side of the tank, behind the compartment area?

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Well, I would first determin: how many circuits it will be? And how many LEDs and which will have each circuit? I prefer each circuit to have equal summary voltage drop to all LEDs light with same brightness.

For example: 1-st circuit = 3V+3V+1,7V = 7,7V + 40 ohm additional resistor

                        2-nd circuit = 3V+1,7V+1,7V+1,7V = 8,1V +20 ohm additional resistor

                         3-rd circuit = 1,7V+1,7V+1,7V+1,7V+1,7V = 8,5V

You can use 1 battery. It's up to you. Besides you already finished front lights and you don't need lights working long.

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I've made my own circuit board for flashing lights in the last Custombilt 379 project.

Anyway - Great work!

You right, it make things easy. Where have you got that flashing system from?

Edited by Sergey
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