Mobile Setup for BIG WATT'S

[6DoubleDuece]

hey guys, I have a RCI 2950 with all the stuff, a 4 pill (2879's) Driving a 12 pill (2879's) with a wilson 5000 roof mount with RG 213. It talks good but I want to set up something bigger

To lay it out for ya I have a 1997 ford F-450 powerstroke with a 200 amp Alt. 2 Batt's under the hood and 4 DC Batt's on a custom rack on the frame.

I have one of the X-force 50KW X-force Ant. mounts on the way, and I have a Mr.Coily I have wanted to test out for a while.

I want to run a 32 pill at 16V. I want opinions on how to set it up and where to get the stuff Like the alts, Reg's Hardline romote coupling for the bird's ect.


So where would you start? LOL


Thanks
622

[Phaze91460]

GREETINGS ! And Welcome To The Forum !

I would check with Radio Active ( A sponsor ) and see what he can help you with.

I only run a 4 pill, never had a desire to melt metal or coax in a mobile.

Guys I know at Keydowns run welding cable and coax the size of commercial garden hose to run a 32 not to mention 5 or more alts with banks of batterys. Sounds like you are looking for a comp rig. Running a 32 can fry the computer on that diesel. If one of our sponsers cant help, PM me and I will see if I can hook you up with someone who competes.

a 12 pill into a wilson ?????

[6DoubleDuece]

Thanks for the reply Phaze.


I don't really want to get into comp's. I just want to be heard on the bowl when I key up. LOL


Here is what I have in mind, I want to keep the 200 amp alt I have now for the driver. Then add 2 more with a adjustable regulater just for the 32 pill. Then I want to change out the 4 Batts I have on the frame for 4 8volt's tied in series parellel for 16 volt's


I was thinking of going AC but I want to be able to drive around and talk.

My main goal is to get 10KW peaks


Thanks again
Brenden

[MudDuck]

Hello 622,

In order to properly run a 32pill you will need (3) 320amp alternators plus at least (4) 8Volt batteries to get your 16VDC.... You will also need a voltage regulator, along with a AC/DC rectifier, along with at least a 30' or better box of 1 or 2 gauge welding cable... You will also need at least a 2x6 to hit the 32pill along with a 200amp to run your driver, to see at least 8000watts @15VDC.... Lots of $$$$ for a big setup like that beleive me.... We build up to 16pill mobile units, that do close to 2200 birdwatts @15VDC.... Not bad concidering it only take (1) 320amp alternator to power it and you can hit it with a 5pill..... Anything bigger than a 16pill unit you are always better going AC tubes in your vehichle..... To see big watts always remember "Voltage x amprage= wattage"
Here is our 16pill:
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Check out EastCoast Amplifiers.....[/img]

[Phaze91460]

Hey Mudduck, at what point do you think the RF will kill the on board comp ? I know one guy in comps who blew his comp for a gas engine with a 16 pill. That diesel is running with a computer.

[MudDuck]

Hey Phaze,

It goes like this!!! Most of todays cars and trucks cannot handle high volumes of RF dumped back into the vehichle's onboard computer without wiping out some of the nessesary componets to make it operate or run properly... Most common cases of High RF will make your wipers come on, possibly damage your airconditioning, or other very sensative control pannels... It can also damage your automatic transmision sending unit into a big fit, along with the check engine light.... The computer can only handle very low volumes of RF without damaging anything at all... Onboard computers can be choked to keep RF from getting in, but as we spoke before in the past the better your vehichle is grounded the better off you are... Now with a 16pill amplifier that puts out high volumes of RF are very dangerous to you and to your vehichle, unless your vehichle has no computerat all... This is why most guys who want to compete in keydowns normally choose a vehichle that has no brain like an old Suburban, or a Van... Hope I could help

[Rex_foxhound]

I like topics like this. Very interesting stuff to learn. Thanks for the info Mud Duck

[6DoubleDuece]

Thanks for the reply Mudduck.

Some thing doesn't add up. If you say I would only need 1 320 amp alt. for a 16 pill, Then why would I need 3 if I am only doubling the amount of 2879's?

I follow ohm's law also. Most amp builders rate their 32pills at 6400 watts so @ 6400 watts divided by 16Volts you would get 400 amp's draw. But then we have to figure out how efficent they are. Being class C I hear them being about 60% efficent. So that makes it another 240 amp's which brings the total up to 640 amp's

That would be peak amp draw though. I usually like to see 1-4 Dead key to peak. So I wonder if that would allow enough time to charge between peaks with two 320's?

Also 320 amp alt's are only going to make 320 amps when they are cool and @ 5000 or so RPM.

let's keep the discussion rollin! Thanks again.


622

[Looney]

32pill= $$$$ = watts = topdog = wow = why do 32pill....

[MudDuck]

Here is a way to look at the overall picture.... Just remember every bank of 4x2879's =100Amps needed maximum... 16x2879's =400Amps needed maximum, I did catch myself now looking back at my post by saying that you could properly run a 16pill on a (1)320Amp alternator, I was wrong and do apologize for that... The 16pill requires to run properly at least 400Amps on the big side, not including your driver!!! you should run the driver seperatly... so 32x2879's = 800Amps on the big side, with (3)320Amp AC alternators you will have 960Amps on the big side which will run your 32pill with ease.... Batteries are an important factor in all of this also, the more batteries you have the longer keyup time.... Now with having (3) 320Amp alternators you will have no problem at all running a 32pill, and you can assure yourself that your equipment is not starving at all.... Most people make the mistake of starving their equipment of power...

[Phaze91460]

Yup, 2 guys I know in FL are running 5 alts and 32 pill is as high as they go in comps.

What is the RPM rating on a 320 amp alt to actualy make 320 amps ?

Diesel engins do not turn high rpm's like gas engines do. At comps these guys are hammered at 4-6 thousand rpm's

another thought, most transmissions now are electricaly controled and have their own computers. another area of consern.

[6DoubleDuece]

Thanks for the tip's Phaze and Mudduck.
I am not really worried about the computer. If it blows then I will do to this truck what I did to my other truck. Change it over to a 12Valve cummins and a 5Spd. I really son't like these power jokes any way. All I need is a reason


So what do you guys think about coax? LMR-600 enough?



622

[Phaze91460]

I am weak in the area of coax. I will differ to Radio Active or Mudduck.

[MudDuck]

I suggest using RG-213 for up to 3000 watts, and RG-217 for anything over that.... Remember your antenna setup and coax is the heart of your system.....

later