opps.. sorry jon, i guess i should of spell checked! i added some questions when i edited my post, but didnt spell check...:doh: the i and the o are right beside eachother :haha:

 

...:doh: the i and the o are right beside eachother :haha:

So are the m and the n
:haha:
Jim, Jon

 

Progress pic,

I did the metal work on the drivers side inner fender / 15" midbass enclosure this weekend.

I had to alter my original speaker mount set up since I bagged the vehicle and the tire was now hitting the speaker when laid out. Still need to mount the com pression horn but at least the tough part is done.

Theres 1/8 inch clearance in about 4 spots. TIGHT and then some, LOL

 

Progress pic,

I did the metal work on the drivers side inner fender / 15" midbass enclosure this weekend.

I had to alter my original speaker mount set up since I bagged the vehicle and the tire was now hitting the speaker when laid out. Still need to mount the com pression horn but at least the tough part is done.

Theres 1/8 inch clearance in about 4 spots. TIGHT and then some, LOL

:wtf: now THATS crazy...

 

what brand of drivers you using? Im assuming they are a loud speaker type driver and not just s sub woofer? The reason i ask is.... i know my 15's in my truck start to sound sloppy above about 200 hertz.... and if your using yours for a true midbass, that would mean you would be running the drivers between about 100 - 800 hertz to be a true midbass? That just seems a little high on the frequency for a 15" sub... or unless like i said your using a loud speaker type setup.... then it would work fine id assume.


You take any full on shots of the exterior of the truck yet Jon?

 

These are older Protechs, although used as SQ subs they are really more of a woofer from a home three way speaker. The cone isn't as rigid or as pulp filled as most modern subs.

I will only be running them from (60? to 80?) to 500 hz. with 24 db / oct cut off on both side of the mid bass pass frequencies. According to theory 477 hz is the point in an extended cab where you loose localization of the sound source do to path length / hearing. The high pass to the compression horns is a 48 db/octave, so I can low them as close to 477 as possible and not blow them up.

I listened the these woofers as mid basses in a couple of the cars at PJ's and in the demo room. The lower tom tom drums had a crisp snap and I could distinguish the stick hit. Bass trombones still had a brass sound. I'll know for sure some time in July

I originally had tried to fit the 18"s in the firewall but ran out of width/room with the two motors. LOL As it is, you can see that the speaker almost touch the outer fenders

 

id cut them off at 60 hertz then, that way you will lose a little of the "boom-y-ness" ( :haha: thats what i call it...) of the 18" subs, then also cross the subs over at 60 hertzs to elimate canceling. I personly wouldnt try to cut the horns off that low, anything under 1000 hertz can seriouly hurt the diver in them. You would be better off either raising the high pass point of the mid bass drivers to around 1000 hertz and raising the horns to the same.. or.... keeping the mid basses cut off at 500, and adding another true midrange driver and running it from 500 - 1500 hertz and then raising the horns to that freq also.... that is what i would do if it were my vehicle. Looks good either way man, and keep up the good work. :thumbup:

Have you ever heard a true SQ car that scored a perfect 40? they sound like ass really hil: ... cause in a sence your looking for a totaly flat sound curve.:bugeye:

 

well Eric Stevens of ID set the second circuit card in the IDX crossover to give me the 48 db per octave so it guess the vender's approval, LOL .

Practicing for the judges, LOL--------------------------

The 48 db per octave has effectively the same cut at roughly 430 hz as a 24 db / octave crossover set at 1k.

Any frequencies below 430 hz the 48 db/octave blocks them better.

A compression driver / horn has two main functions. The first is to equalize path lengths and the second is to only have a single driver ( per side) playing the frequencies that are critical to the ear. So the closer you can get the to sound frequency where localization is no longer possible in your vehicle, the better it should image since it only has one point source per side versus a conventional set up which is playing the same frequency at a cross over point in the localization range from 4 different drivers.


I agree a flat curve is bland. I have played in couple of IASCA national event winners back in the mid 90s at PJ's shop in Erie. This Included one of the first vehicles to have four 1/3 octave Eqs. 2 set to get the flat curve 40 and then 2 set for listening.

 

damn!! wtf, 2 engines how the hell?! wtf!! anyways wtf!! but yeah, i wanna see rear pics of it laid out with those fat tires man! that is so bad

 

this has to be the koolest truck ever. :thumbup: wow o wow

 

I wanna know wone thing and only one thing....how many of what kind of degrees does this guy have, I mean really? Obviousely he's ogt some major engineering background, but what specifically. The truck is VERY awesome, and in all honesty one of the wildest things I've ever seen. I admire you for both your intelligence/ingenuity and the fact that you have the rocks big enough to undertake something like this.

 

I am degreed as a Controls Engineer and currently design X-ray and nuclear based thickness / density measurement equipment for industrial applications.

I was raised by a hotrodding mechanic on a farm so thats where the inguinuity and fabrication comes into play.

There is still more stuff I haven't mentioned because I want to be among the first to have them at the show.

Thanks for the comments, they help keep me going to make sure it gets finished for Carlisle. I have a couple other vehicles that are kinda unique too but this is my actual "show" truck. I hope I can detail it as nice as many of the rides in this forum..

 

man i hope you have this thing finished for carlisle! I wana see it in person! Hell even if its not finished... tow it down with your other truck.... the limo cab truck, put them both in the show :haha: :woot:

 

if/when you make it to carlisle i MUST shake your hand.

i'm having trouble believing what i just saw. absolutly INSANE.....

you rock.

 

man i hope you have this thing finished for carlisle! I wana see it in person! Hell even if its not finished... tow it down with your other truck.... the limo cab truck, put them both in the show :haha: :woot:

I will be entering both the black limo S-10 and the candy tangerine "twin" truck the same class ....... Hope to get a picture of one or both in a magazine.

For those who didn't see the V8'd triple extended cab "limo" truck here is a picture of it , w/ my homebuilt car trailer and my summertime daily driver, a white 88 Blazer static dropped 3/3, 17's, 4.10 posi 9" ford, and a nitrous'd LS1.

 

:bowdown: sweet trucks man

 

:bowdown: sweet trucks man

Thanks,

Just keep building trucks for another 17 years.

 

wow anymore pics of the limo???? you have so many badass toys. can i come live with you? haha

 

Progress update,

Spent entirely to much time changing out control arm bushings. Front suspension should be going on for the last time this week.

Next on the agenda is to mount all my high pressure air tanks which just got back from being welded.

http://www.blazinlow.com/forum/attachment.php?s=&postid=458927

Tanks will all be mounted under the truck as the bed is fill of stereo, fuel cell and batteries. I also want the air supply as close to the valve and as short a run from the valve to the bag as reasonably possible.

 

im in awwwwwwww

 

wow.. those are some beefy tanks there man.. what are they 1/4" wall tubing? How many gallons of air do all the tanks combined hold? I know it should be called cubic feet, but the tanks you would normally buy are refferred to by gallons.... so as a comparsion... i use gallons

 

The tanks are 1/4" wall 6" pipe. (ID of 6.08"). Here is pic of the "log" of endplates I turned just before I seperated them. The endplates are 1" thick with 3/4" bungs.
http://www.blazinlow.com/forum/attachment.php?s=&postid=411390.


Total capacity. 21.25 gallons plus 0.75 in the 3/4" lines connecting them all for a total of 22 gallons

I plan on starting at 399 PSI, the limit of my Dakota digital display sensors for the tank pressure .

If that doesn't get the truck off the ground then I'll try 450 psi, which is the rated limit of my Slam dual mode valves.

This is what I figured I needed to have the best chance to filling the HS82's to 300 PSI in the shortest period of time and make this hog of steel pancake.

 

whats the benifit of running an 82 up front... I don't understand why you would hack that much of your frame for no extra lift? my 62's up front are maxing out my ball joints.. I can see running a 72 for a little better ride quality at a lower pressure but 82's seem pointless to me...

 

This vehicle has very little to do with being practical. Not sure how familiar you are with this project vehicle but there are TWO all steel 355 V8's and a bunch of stereo equipment, batteries and nitrous bottles, etc. It is very heavy, but I want to see daylight between the ground and all four tires on the first lift.

Dual mode valves will give me controllable options on the "slow" side of the valves.

HS82 start out with a lifting force of 13254 @300 PSI @ 3"
HS72 start out with a lifting force of 10895 @300 PSi @3"
HS62 start out with a lifting force of 7655 @300 PSi @3"
RS62 start out with a lifting force of 4593 @180 PSI @ 3"

22% more force than a HS72 -------with 4 bags that a total of 9,436 pounds more force.
73% more force than a HS62
188% more force than a RS62 ------ with 4 bags that a total of 34,644 pounds (> 17 tons) more force.

 

:stupid: yeah what he said...... But in simple terms... 2 heavy small block motors.



1" thick endplates! thats insane man! :haha: