posted
3-2 No partitions or other barriers may divide or compartmentalize the passenger compartment. (Intent: The listening environment should approximate that found in a typical vehicle.)
Additional Guidelines:
· A minimum unobstructed area of at least 4 square feet must be provided between the driver’s side of the vehicle and the passenger’s side of the vehicle.
Does this have to be in one area? Or can the 4 sq ft be divided into 2 - 2 sq ft areas? Some competitors have a center console to roof brace
-------------------- See you in the lanes,
dBSteve Get Loud Productions LLC Posts: 8436 | From: Midwest | Registered: Aug 2000
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The VC limit is part of the equation for limiting overall power in the Street Division. Please see my other post requesting info on bridged amps. Some of the big monster amps may be in violation of existing rules. I need to know. Thanks.
Look for typos, omissions, or other loopholes that we missed.
-------------------- "Keep it Loud and Make me Proud!"
posted
wayne, my big problem is now i just went out and bought8 amps and was gonna go get 8 more so i can use quads.but if i would have known that quads cant be used i would have bought bigger amps.i bought the 900xd so now i have to sell my amps to get more power or hope i can make due with what i got.this sucks tho,i known im saving money on amps because i dont need 16 now i dont have enough power
quote:Originally posted by mtxbird: wayne, my big problem is now i just went out and bought8 amps and was gonna go get 8 more so i can use quads.but if i would have known that quads cant be used i would have bought bigger amps.i bought the 900xd so now i have to sell my amps to get more power or hope i can make due with what i got.this sucks tho,i known im saving money on amps because i dont need 16 now i dont have enough power
5-4 The program material must be reproduced using conventional loudspeakers (subwoofers). The determination as to whether a loudspeaker is acceptable for use in dB Drag Racing competition shall be at the sole discretion of the dBDRA.
Additional Guidelines:
· Loudspeakers incorporating more than 4 discrete voice coils are prohibited. (Loudspeakers are limited to a maximum of 2 discrete voice coils in the Street Division.)
Street class is limit to 2 voice coils.. any other division can use 4.. and since you have more than 1 amp im assuming you were planning on competing in a class other than street.
-------------------- Shattered and Broken. Now Recovering. Posts: 1226 | From: Mississauga, ON, Canada | Registered: Feb 2002
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quote:Originally posted by mtxbird: wayne, my big problem is now i just went out and bought8 amps and was gonna go get 8 more so i can use quads.but if i would have known that quads cant be used i would have bought bigger amps.i bought the 900xd so now i have to sell my amps to get more power or hope i can make due with what i got.this sucks tho,i known im saving money on amps because i dont need 16 now i dont have enough power
Dude you misread the rule...quads are allowed but not more then 4 voice coils...the 2 coil limit is only in street class
--------------------
2008 Spring Break Nationals Street B Champion 153.2dB 2008 dBDrag North American Finals 3rd Place Street A 155.0dB
2 TF One 10" + 1 American Bass 1000.1 + Odyssey 1750 Posts: 2965 | From: Canada | Registered: Dec 2000
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posted
now i have no clue what to do, i planned on competing no wall all year and upgrading my way there, but the way i am planning my upgrades i'll be in street 1-2 at first, then 3-4. confused. now i dunno how many batteries i should buy or anything. balso what are the rules reguarding expanding foam in street like inside panels etc? its a little different than mat or spray ons
This is looking real good. But what about the safety issues, that we had problems with at the World finals !!??
-------------------- Tor Aamodt
*Head Judge at World finals 2004, 2006 and 2007 *Judge at World finals 2002 - 2003 *Norwegian dB Drag Racing Association. (NdBDRA) *Certified multi point judge.
quote:Originally posted by mtxbird: wayne, my big problem is now i just went out and bought8 amps and was gonna go get 8 more so i can use quads.but if i would have known that quads cant be used i would have bought bigger amps.i bought the 900xd so now i have to sell my amps to get more power or hope i can make due with what i got.this sucks tho,i known im saving money on amps because i dont need 16 now i dont have enough power
Dude you misread the rule...quads are allowed but not more then 4 voice coils...the 2 coil limit is only in street class
ok thats good i just went back and read again before reading this and noticed my mistake.sorry about that wayne
After the World finals, Robert most used word, is "Say What ?"
Thank you for taking care of my email...
The rules are looking good so far..
Nathan, Are you happy now, that you don't need to move to europe ??
-------------------- Tor Aamodt
*Head Judge at World finals 2004, 2006 and 2007 *Judge at World finals 2002 - 2003 *Norwegian dB Drag Racing Association. (NdBDRA) *Certified multi point judge.
posted
3-10d Nothing must obstruct the driver’s (or passenger’s) view through the windshield or side windows of the vehicle. (Window bracing and floor-to-roof bracing is acceptable provided their use does not violate any other applicable rules.) Additional Guidelines: · Build-downs that impede the driver’s (or passenger’s) view will be considered an obstruction, even if the material being used is transparent in nature.
I think the word impede needs to be changed to clarify this one, if your intent is to get rid of the plexi boxes.
posted
3-8a Sound damping materials may be used to reduce vibration when installed in accordance with the manufacturer’s recommended installation instructions. For mat-type materials, the total thickness of all layers applied at a given point may not exceed 1/8 inch. For spray-on materials, a maximum spray thickness of 1/8 inch may be used. (Only one type of sound damping material may be used at a given point.)
One layer of most good dynamat is greater than 1/8th inch. We have no sound deadener, so this doesnt affect our van, but will affect every customer I try to sell sound deadening to. Maybe it shoud be no more than 3/8" .
I also think that names of the street class need to be changed as two 15" woofers doesnt constitute 3-4 woofers.
How about Street 1 and Street 2 or something similar.
-------------------- Bobby Riley Art's Sound Chamber
Fifteen time SPL World Champions-----26 SPL World Records DB Drag == IASCA == USACi == MECA Posts: 3484 | From: Retirement Village in Branson Missouri. | Registered: May 1999
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quote:Originally posted by Bobby Riley: One layer of most good dynamat is greater than 1/8th inch. We have no sound deadener, so this doesnt affect our van, but will affect every customer I try to sell sound deadening to. Maybe it shoud be no more than 3/8" .
I also think that names of the street class need to be changed as two 15" woofers doesnt constitute 3-4 woofers.
How about Street 1 and Street 2 or something similar.
I agree on all of these points, one should be able to use at least one layer of common dampening material. Maybe 1/4" (6.35mm for us using the metric system) is more reasonable for mat type materials? And by the way, who will determine how thick the dampening is? Will this go by manufacturers specification or what?
And the names for the street classes sure will confuse a lot of people if they haven't been involved in dB Drag Racing before. I think they should change, maybe Street A and Street B or something like that.
-------------------- Martin Nordborg
Swedens loudest Street car in both dB Drag Racing and Bass Race ever!
posted
I dont understand the 4 ft2 rule for extreme... do you mean that there has to be 4ft2 from drivers door to passengers door? or 2 ft2 from drivers door to drivers side console, and the same for the passenger side, for a total of 4ft2? Maybe I am just not thinking about this in the right way. Someone please explain.
-------------------- Scott Van Riper Team Its Real http://www.kinetikpower.com http://www.180db.com 04' DB Drag finals Ex 3-4 169.2 3rd place 04' MECA World Finals 2nd place X2 170.9 04' IDBL World Finals 1st place Ultimate 3 173.4 05' DB Drag Finals ex 1 4th place 06' DB Drag Finals ex 2 2nd place 07' DB Drag Finals ex 2 3rd place 08' DB Drag Finals ex 2 3rd place (loudest losing score 177.3 db lol) Posts: 7859 | From: Morgantown WV | Registered: Apr 2001
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posted
I AGREE ABOUT THE RENAMING OF THE STEET CLASSES, BUT I DO NOT AGREE WITH BOBBY ABOUT THE USE OF 3/8 INCH OF DYNAMAT. I THINK 1/8 INCH IS FINE.
1/8"=.125 DYNAMAT ORIGINAL IS .07 THICK DYNAMAT XTREME IS .044 THICK DYNASHIELD SPRAY THICKNESS IS RECOMMENDED AT .07 THICK EXTREMELINER IS .392 THICK SO YOU COULD STILL USE TWO LAYERS OF DYNAMAT XTREME. YOU CAN'T USE EXTREMELINER
-------------------- 4TH PLACE 2002 WORLD FINALS S 3-4 TEAM KRAZY 8'S EAST COAST 147.5dB 1973 VW BUG 2001 JEEP CHEROKEE Posts: 501 | From: Florida | Registered: Aug 2002
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