Re XXX = Loose Motors?

[helotaxi 5,000+ posts]

On large motored subs like a XXX, unless its mounted vertically, it should have a motor support built into the enclosure (also doubles for bracing). This takes alot of the lateral stresses off the frame/motor assembly.

The key work is "SHOULD". Many people don't think about that.

 

[skmfkr 5,000+ posts]

mounted vertically? i had mine mounted vertically with a slight angle and i guess this is the problem i had with mine

 

[CBFryman2 5,000+ posts]

and it isnt needed....look in the back of any SPL vehicle that is walled off...rarely will you see motor braces.... its a manufacture defect, call freaking RE, they will take care of you, someone close this thread now //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Spkrman]

and it isnt needed....look in the back of any SPL vehicle that is walled off...rarely will you see motor braces.... its a manufacture defect, call freaking RE, they will take care of you, someone close this thread now //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

exactly...

If the motor can't be supported, the woofer needs a redesign.

 

[helotaxi 5,000+ posts]

and it isnt needed....look in the back of any SPL vehicle that is walled off...rarely will you see motor braces.... its a manufacture defect, call freaking RE, they will take care of you, someone close this thread now //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

How many of these "vehicles" are driven daily? It has nothing to do with the sub playing and everything to do with hitting a bump causing a sideload shock (which the frame isn't necessarily designed for) and cracking the frame. I agree that this particular case is a manufacturing defect, though.

 

[Spkrman]

How many of these "vehicles" are driven daily? It has nothing to do with the sub playing and everything to do with hitting a bump causing a sideload shock (which the frame isn't necessarily designed for) and cracking the frame. I agree that this particular case is a manufacturing defect, though.

There are numerous daily driver walls with motors that dont have some sort of a support built in.

Some have been in commision for years, with no problems.

If the frame breaks when you hit a bump, its time for new woofers anyway.

 

[CBFryman2 5,000+ posts]

TY, and alot of SPL vehicles are driven, often 100+ miles, to competitions...not everyone can afford a trailed that can handle an astro van with an extra 1200lbs of audio equiptment.

I go mudding with my truck and my Avalanche 18 in the back bounching around the whole time...havent had any problems

ive seen speakers survive wrecks better than the people in the car.

your generic 12 spoke can probably hold a 200lb motor structure easily. since XXX's arent even pushing 100lbs in total there is really no worry....and if a speaker needs a 200lb motor structure the owners eitehr have hearing problems or the company made it for the bling bline factor (Cough MTX cough)

 

[ngsm13 5,000+ posts]

Somebody must just be a tard and not treated it correctly.

NG

 

[germanyt 10+ year member]

Going from old memory with obviously didn't serve me correctly but the point remains, at 100% efficiency, a sub still doesn't create power. 1kW into the sub is going to equal less than 1kW of mechanical force. Hook the most powerful car amp made (about 10kW from what I've seen) and you're going to get less mechanical power than the typical B&S engine on a riding mower. Any way you look at it, it isn't breaking thread locker. You're looking at either improper manufacture (bad tapping, inadequate thread lock during initial assembly, improper torque, stripped threads, etc...) or an external force causing the problem, not the sheer "power" of the sub.

i think you have down syndrome. obviously a substage is going to vibrate much more than an engine no matter how much horsepower it has. the point is that the vibration from the subs loosened the bolts holding the motor together. if a motor vibrated as much as a subs do, im sure it wouldnt stay together. hence, dragster motors have to be rebuilt very often because of the stress. not to say that faulty manufacturing isnt the cause, but to say that the motor should cause it before the vibration from the sub itself because of a comparison in horsepower is just retarded. how bout comparing vibration.

 

[InhumanAcura 5,000+ posts]

i think you have down syndrome. obviously a substage is going to vibrate much more than an engine no matter how much horsepower it has. the point is that the vibration from the subs loosened the bolts holding the motor together. if a motor vibrated as much as a subs do, im sure it wouldnt stay together. hence, dragster motors have to be rebuilt very often because of the stress. not to say that faulty manufacturing isnt the cause, but to say that the motor should cause it before the vibration from the sub itself because of a comparison in horsepower is just retarded. how bout comparing vibration.

i garun****intee that guy is more knowledgable than j00 //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

quit while youre ahead...

nice to see helotaxi posting again..

 

[ngsm13 5,000+ posts]

i think you have down syndrome. obviously a substage is going to vibrate much more than an engine no matter how much horsepower it has. the point is that the vibration from the subs loosened the bolts holding the motor together. if a motor vibrated as much as a subs do, im sure it wouldnt stay together. hence, dragster motors have to be rebuilt very often because of the stress. not to say that faulty manufacturing isnt the cause, but to say that the motor should cause it before the vibration from the sub itself because of a comparison in horsepower is just retarded. how bout comparing vibration.

You're gonna get owned.

NG

 

[Mr. Opportunist 10+ year member]

i think you have down syndrome. obviously a substage is going to vibrate much more than an engine no matter how much horsepower it has. the point is that the vibration from the subs loosened the bolts holding the motor together. if a motor vibrated as much as a subs do, im sure it wouldnt stay together. hence, dragster motors have to be rebuilt very often because of the stress. not to say that faulty manufacturing isnt the cause, but to say that the motor should cause it before the vibration from the sub itself because of a comparison in horsepower is just retarded. how bout comparing vibration.

wow very n00bish post //content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[Tirefryr 10+ year member]

Ponder this. . . Perhaps the steel used in the hardware had impurities to make it brittle. Say they got a bad batch of screws. Maybe the Loctite was defective. Maybe the torque guage on the tool they were using to secure the hardware was inaccurate. . .

Who REALLY knows?

 

[slick rick 10+ year member]

i garun****intee that guy is more knowledgable than j00 //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif
quit while youre ahead...

nice to see helotaxi posting again..

+1 on what you said...Newbs on this forum. //content.invisioncic.com/y282845/emoticons/furious.gif.fc81ca146dbff91fede3ed290dbc4f4c.gif

 

[helotaxi 5,000+ posts]

i think you have down syndrome. obviously a substage is going to vibrate much more than an engine no matter how much horsepower it has. the point is that the vibration from the subs loosened the bolts holding the motor together. if a motor vibrated as much as a subs do, im sure it wouldnt stay together. hence, dragster motors have to be rebuilt very often because of the stress. not to say that faulty manufacturing isnt the cause, but to say that the motor should cause it before the vibration from the sub itself because of a comparison in horsepower is just retarded. how bout comparing vibration.

Really?!? Let's see, a sub is seeing, what, 20-150hz which is between 1200 and 9000 "RPM". A comp type sub is going to be limited to 40-60ish hz, effectively 2400-3600 rpm. Say the sub is getting the ever-loving hell powered out of it and it manages to move 2". Now let's compare that to the engine in say a Harley. They're running about the same RPM range, that's right in the meat of the powerband in a Twin Cam. The stroke is twice as much and the piston and rod and flywheel assembly way a ton more. Now which do you think vibrates more? Hint, it ain't the sub. Also you have to factor in the axis of the vibration with a sub which is all axially to the screws in question which won't cause them to loosen.

Next, vibration isn't the reason that dragster engines are rebuilt so often.

Third, my post was in response to someone saying that the "the subs are so powerful, that they crack the glue that lock the bolts in place" and I was merely pointing out how stupid that statement was. Not quite the same level of stupidity which you are displaying but stupid nonetheless.

Next time you want to chime in calling someone a waterhead, check to make sure that you have all your chromosomes intact.