Polycarbonate vs. lexan hoods?? (IQ racer)

[nvrstuk]

Hmmm

I ran a poly hood on my first 03 Escape for years. It was belly up several times, I could sit on it and never a crack or discoloration.

I've got a sweet mesh hood now and I'm going back to poly. Mesh is too susceptible to those nasty branches close in to those trees...

 

[SAWYER]

kinda...GE got out of the resin business and sold lexan to SABIC. However, Lexan is just a trade name for their version of polycarbonate. Same...Same...

So, Lexan vs. Polycarbonate is a bit of a misnomer since lexan is polycarbonate. Unfortuneatly for us, All polycarbonates are not the same. They come in high molecular weights and low. Higher molecular weights are more expensive and are more difficult to process but usually have better properties. Also, clouding the issue, some stinkers use acrylic resin and call it Lexan for marketing purposes. Acylics shatter more easily.

So I guess for us, we would have to ask are you really using lexan in your hood? If you are comparing vendors for different hoods you might ask for the vendor certs and compare molecular weights.

Karl

Were you validictorian? (sp)

 

[pernikm]

Magna cum laude, my twin sister and older brother were validictorians...no...seriously...I work in a materials research laboratory. I have access to some really smart nerds....

snicker

Karl

 

[alexkravets]

Million dollar answer

All you have to do is use right material to make hoods
SABIC have polycarbonate that's works well with cold temperatures
If you take any polycarbonate hood you can ran that thing over with the tank
And it will not crack as long as it is over 70F
Any thing colder than 36F and you can crack your hood very easy
Also paint will make your hood very brittle
So if they use Polycarbonate/Siloxane copolymer It has Excellent low temperature impact. It will not crack!!! I tested