The carbon slicktop thread

[Casa de Mesa]

Another couple question.

1. Why do body shops contract out the glass(front and rear windshield) work? What's the limiting factor that makes it need a specialist.
2. Has anyone tried saving some dough by DIY'ing the windshield removal? It seems like a mild pain, but pretty easy. My front glass will need replacement anyways (rear is in good shape).

Removing glass is significantly harder than you'd imagine, especially on older adhesive. My bet is body shops don't want the hassle.

When I had my front glass removed to spray the car, the glass installer (not the body shop) installed the incorrect weather strip that frames the windshield. But I didn't realize it until the rolling chassis was back at my house. So I had a mobile vendor come to pull the glass and install the correct BMW trim / weatherstrip. The vendor that came was 1) very detail oriented 2) NOT from Safelite 3) an independent glass guy with fantastic tools and 25 years in the biz. He warned me that there was a 50/50 chance that the brand new fancy IR windshield that was just installed a week earlier would crack upon removal, as the original windshield did that was removed from the car to do the paintwork.

It didn't crack, but even with his pro-quality tools, there is no way I'd want to try that job. You just can't fake experience with some jobs.

[bavarian3]

Another couple question.

1. Why do body shops contract out the glass(front and rear windshield) work? What's the limiting factor that makes it need a specialist.
2. Has anyone tried saving some dough by DIY'ing the windshield removal? It seems like a mild pain, but pretty easy. My front glass will need replacement anyways (rear is in good shape).

[bavarian3]

dynamat makes a few different products including a roofliner. that being said, went with the oe stuff. makes a big difference even just tapping on the roof. would definitely not run it without something to dampen the noise

OEM is what I went with. If I were going to skip it due to price or availability, I'd go with an adhesive backed melamine foam made for cars. I'd rather absorb the sound than dampen it from above, simply because of the weight.

Noted. Went ahead and ordered it while it's still around.

[Casa de Mesa]

Yeah though dynamat is quite heavy. Just curious if those without it noticed increased road noise. Hard to imagine it does much with how light and airy it is.

OEM is what I went with. If I were going to skip it due to price or availability, I'd go with an adhesive backed melamine foam made for cars. I'd rather absorb the sound than dampen it from above, simply because of the weight.

[ugaexploder]

Yeah though dynamat is quite heavy. Just curious if those without it noticed increased road noise. Hard to imagine it does much with how light and airy it is.

dynamat makes a few different products including a roofliner. that being said, went with the oe stuff. makes a big difference even just tapping on the roof. would definitely not run it without something to dampen the noise

[bavarian3]

Used the OE foam. But im sure you can use dynamat for example.....

Yeah though dynamat is quite heavy. Just curious if those without it noticed increased road noise. Hard to imagine it does much with how light and airy it is.

[0-60motorsports]

Question for everyone here that's installed a cf roof - did you use the oe, or some form of insulation?

I see many here seem to skip it. Wondering if it's worth bothering with.

Used the OE foam. But im sure you can use dynamat for example.....

[bavarian3]

Question for everyone here that's installed a cf roof - did you use the oe, or some form of insulation?

I see many here seem to skip it. Wondering if it's worth bothering with.

[bigjae46]

[QUOTE=Epsilon;n318980]For the curious, just adding BMW M4 F82 stock carbon roof photos since few have seen the underside w/o the headliner:

The E9X M3 also has a spread tow fabric on the underside. From watching a production video, I think they use a 1x1, biaxial layer, some sort of thin core material, biaxial layer and a spread tow on the bottom. Then the underside is a smooth finish since they use a compression mold. Of course, top notch stuff!

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[Epsilon]

For the curious, just adding BMW M4 F82 stock carbon roof photos since few have seen the underside w/o the headliner:

[bigjae46]

Found this rare E46 M3 Vorsteiner carbon roof on the internet that seems interesting and wanted to share. Note that the underside looks like fabric. Is that the biaxial fabric you speak of?

Hard to tell from the pic. Looks like some sort of chop strand veil.

[sasha]

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[Epsilon]

That is odd. When I make my roofs I use a biaxial fabric under the exterior layer which takes care of any voids since the tows are 45 degrees from the outer layer. Then I use a thicker layer on the bottom.

Found this rare E46 M3 Vorsteiner carbon roof on the internet that seems interesting and wanted to share. Note that the underside looks like fabric. Is that the biaxial fabric you speak of?

[bigjae46]

The photos are from the outside. You can see the hole under the sun too.



I have the RKP roof I purchased from IND.


Here's a photo from the inside when sunny out:

That is odd. When I make my roofs I use a biaxial fabric under the exterior layer which takes care of any voids since the tows are 45 degrees from the outer layer. Then I use a thicker layer on the bottom.

[Epsilon]

Is that the inside or outside?

The photos are from the outside. You can see the hole under the sun too.

Epsilon

Which brand roof is this? Aren't these roofs supposed to be made from multiple layers to give it the strength that is required for a structural component?

I have the RKP roof I purchased from IND.


Here's a photo from the inside when sunny out: