So, I just finished casting a fiberglass impression of my spare tire well over my spare tire. I don’t know if folks do this, but the idea is that I get to keep my spare tire (my wife would kill me if she got a flat and only found a sub in place of a spare) and a 10 will work nicely in a sealed space the size of the rim recess. My first time with fiberglass; it was actually quite easy and turned out better than expected; I expected the worst.
Anyway, I’m looking for a lightweight product that will level some flat areas. The fiberglass is mostly flat with some ~1/4” irregularities. I just need it flat enough to carpet and look decent. The entire business (amps, enclosure, sub) will lift with the well lid so I would like the leveling compound to be as light as possible. Is Bondo lightweight? It’s kind of expensive, but if it’s light I might spring for it. Any other ideas?
Thanks.
Replies (4)
P0werLifter on 11/16/2005 01:49:59
Your best bet is going to be using Bondo, Its not going to add much weight to the enclosure and will fill in the recesses. Then just sand and cover that bad boy and ur done. There might be some other stuff out there maybe, i use puddy to fill in small pinholes b4 I paint, but I allways use bondo to fill in the low sections.
-PL
P0werLifter on 11/16/2005 12:16:16
BTW what model 10" do you have? and what is the volume of the enclosure? Havnt heard fo someone fiberglassing over ths spare, not sure if the airspace is going to be enough. How much volume do you have in the enclosure?
pigwiggle on 11/16/2005 13:04:31
I’m planning on using a Polk MM2104. The recess in the rim is ~0.5cf, and using the space not occupied by the amps and the sub itself I’ll pick up the needed 0.16cf; I could get a bit more if I wanted, but Polk recommends 0.66cf sealed. Also, glassing into the rim has the added benefit of reducing the flexibility of the enclosure. It is a very snug fit.
Two major concerns sent me down this rout. First, I live in a relatively high crime area so I wanted to be able to lock down as much gear as I could and a stealth install is a must. The sub and both my amps will be locked in the spare compartment and completely out of sight. And second, I wanted to keep the spare and not relocate it into the passenger compartment.
P0werLifter on 11/16/2005 15:44:19
ok so the recess of the rim is going to give you .5cf net then your adding another +.16cf correct? As long as you meet the recommended CuFt for the woofer you should be fine. To small of an enclosure will net you a response curve that has irregularities.
I modeled the enclosure + the driver in my software and its showing a slight irregularity in the response and you till peak at 150hz
Anyway, I’m looking for a lightweight product that will level some flat areas. The fiberglass is mostly flat with some ~1/4” irregularities. I just need it flat enough to carpet and look decent. The entire business (amps, enclosure, sub) will lift with the well lid so I would like the leveling compound to be as light as possible. Is Bondo lightweight? It’s kind of expensive, but if it’s light I might spring for it. Any other ideas?
Thanks.
Replies (4)
P0werLifter on 11/16/2005 01:49:59
Your best bet is going to be using Bondo, Its not going to add much weight to the enclosure and will fill in the recesses. Then just sand and cover that bad boy and ur done. There might be some other stuff out there maybe, i use puddy to fill in small pinholes b4 I paint, but I allways use bondo to fill in the low sections.
-PL
P0werLifter on 11/16/2005 12:16:16
BTW what model 10" do you have? and what is the volume of the enclosure? Havnt heard fo someone fiberglassing over ths spare, not sure if the airspace is going to be enough. How much volume do you have in the enclosure?
pigwiggle on 11/16/2005 13:04:31
I’m planning on using a Polk MM2104. The recess in the rim is ~0.5cf, and using the space not occupied by the amps and the sub itself I’ll pick up the needed 0.16cf; I could get a bit more if I wanted, but Polk recommends 0.66cf sealed. Also, glassing into the rim has the added benefit of reducing the flexibility of the enclosure. It is a very snug fit.
Two major concerns sent me down this rout. First, I live in a relatively high crime area so I wanted to be able to lock down as much gear as I could and a stealth install is a must. The sub and both my amps will be locked in the spare compartment and completely out of sight. And second, I wanted to keep the spare and not relocate it into the passenger compartment.
P0werLifter on 11/16/2005 15:44:19
ok so the recess of the rim is going to give you .5cf net then your adding another +.16cf correct? As long as you meet the recommended CuFt for the woofer you should be fine. To small of an enclosure will net you a response curve that has irregularities.
I modeled the enclosure + the driver in my software and its showing a slight irregularity in the response and you till peak at 150hz
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