Hi i recently got me a set of nathan P3 trainhorns' im going to mount them on my truck ' the pressure for these is 100psi' flow rate(CFM) is 40 ' what would be a good set up for these bad boys blasting for a good 10 or 15 seconds' what kinda compressor would i need and tank' how big should this tank be? iv been looking at afew horns online and cant find the specks for this' i saw some guy on here have a set put on his truck and that just gave me intrest and cant find that thread.

 

Hi, I just finished my setup about 2 weeks ago. Lots of fun with these horns so far. I don't have the nathan horns like you have but mine are similar. I have the horns mounted upfront under the radiator facing the passenger side. I have a 2 gallon tank mounted to the frame rail under the bed with a viair 350c compressor feeding the tank. Takes about 2 - 2 1/2 minutes to fill the tank from 0 - 100psi. I can get a good 7 - 9 sec blast before I notice the
horn sound changing. For your horns i'd recommend getting at least a 5 gallon tank if you want to blast for 10 - 15 seconds. The nathans seems to require alot of air compared to the others. I'll take some pics of my setup tomorrow and post them on here for ya to get some ideas.

Rob

 

Awsome ' this is going to be my prodject for this weekend ' what im going to do is get an AC pump off a 94 ford f150 4'9 ltr and have that as my compressor' did the 4'9 liter come with mounting brackets for this AC pump? my truck did not come with AC. im not quite sure on how to do this yet but iv found this http://www.off-road.com/jeep/tech/body/york/ and am going to follow it up' this will give me abit more for CFM around 8 to 10 from what i hear' thanks cant wait to see your pics.

 

Hi, it took me about two weekends to install mine but that was just because I went along very slowly. I have heard about using an ac compressor as an onboard air supply before and personally think its a good idea. Sounds like you will have plenty of air! On my setup I installed an extra quick connect which I can use to fill tires or operate small air tools for a short period, works out nicely. I personally have no experience with using an ac compressor or the components required to install one but maybe someone else on here can speak up for that part. But anyways heres some pics of my install:

Compressor and tank under the bed:

Another view of the tank:

Pressure guage:

Momentary button that unleashes the terror, lol :

 

Hi, sorry about the username (zoboo2), I just forgot to change to my new user name v8_f-150. Here's the rest of the pics:

Passenger side view of train horns:

Drivers side view:

Train horns air inlet:


Wow I just noticed in these pics that I really need to do somethin with that rust on my frame, lol.

 

Looks good ' what size of hose you got running to those horns and what kinda pressure are you running' looks sweet. bet those can wake up the neigborhood!!!

 

Hi, I'm running 16 ft of 3/8" 200 psi working/800 psi burst air line. One thing I was told was that you don't want to use anything less than 3/8" or else you will have high pressure and a small volume which makes a quiet horn compared to having high pressure with alot of volume which makes a very loud horn. You will also want to avoid bottle necking with any fittings. Try to keeps all your fittings at least 3/8". I'm running my system at 100 psi. My pressure switch turns on the compressor at 70 psi and off at 100 psi. At 100 psi these things are looooouuuudddd!! I went out in the country to play around with them and did they ever echo. Sounded exactly like a train coming. I first scared myself when I hooked them up to only 20 psi in the garage for the first time. Here's a link to website that helped me alot and pretty much explains what I just summarzied.

http://www.siegeengine.com/auctions/...ornbasics.html

 

neat' well today i got the Ac compressor mounted and running and pushing over 200psi now just got to get the wiring right ' runnig a pressure switch to the compressor and picked up 2 11 gallon tanks with a push button valve simalar to yours' im thinking of mounting the tanks under the truck and end up drilling into the bed' running half inch hose to the horns' ill keep yea updated on this' its going to be a great project'http://www.dieselairhorns.com/bythet...002/27_K-3.wmv http://www.dieselairhorns.com/bythet...us_P_s%7E0.wmv http://www.dieselairhorns.com/bythet...K-5LA._TM..wmvHeres some vids haha ' good fun !!

 

Well we got em up and running ' the only problem is lubercating the Ac pump' right now im adding some slick 50 to it to try and keep it lubed up ' but it does not sound that good when filling the tanks ' kinda get abit of a squeel outta the Ac compressor like its working overtime ' but if it fails in the long run i will go to a 12 volt air compressor' the hose i used was half inch' with brass fittings to finish it up ' we got the pressure switch set at 150 and putting alittle over 100 psi to the horns and a diamond plate for the horn mount under the box. i still gotta play with the regulator but ill got outta the city for that' took it for its first blow and hot dam these are worth every penny!' they put out just over 140 Dbls' it feathers really nice to'Could not have done it with out my uncle the electrician i had to honk at some gals under a bridge i was heading towards haha never seen anyone just so high in my life. but its good fun. . http://img110.imageshack.us/img110/9...ture0468lu.jpg [IMG]http://img110[IMG]

 

sry double post had to remove it

 

Hi, looks like a good setup. I bet those things are 10x louder than mine! You'll have lots of fun and the best part is instead of getting your blood preasure up when someone pisses you off you can just unleash those bad boys on them, lol. I seem to get a little adrenaline rush right before I push the button on mine, and I like it! I had some weird homeless guy come running up to my truck while at a stoplight over the weekend slamming his sign into my windshield and thats when I let him have it. That s.o.b. must have jumped 3 feet in the air! It may have cost alot compared to a regular car horn but I think these setups are definantly worth the cost.

 

Haha thats cool' i get abit of an adrenialen rush aswell' but in the end its well worth it.