[Ken Reich]

crossdrilled brembo rotors :wink:

 

[Ken Reich]

front wheels as well :wink:

 

[amdmaxx]

Colorado...

nice pix..

 

[CloNeGTS]

Why? We had the discussion that cross drilling rotors isn't a beneficial thing to do.......

 

[Ken Reich]

just to be different , :wink:

 

[BHODGES3]

Heh, then it is kind of like snow-flakes... no two cross-drilled rotors will have the same crack pattern.

 

[4MLA1FN]

Carbon Fiber Dash as an option?

did you drill in a spiral pattern? hard to tell.

 

[Ken Reich]

spiral pattern, everyone has an opinion, i've used cross dilled rotors on drag cars , turned them blue , stopping a 3000 lb car with small front wheels and 15x 33 goodyears on the back, from 165 mph tends to make some serious heat, show me some of these cracks that some of you are seeing, I,ve not had the opportunity , :wink: :wink:

 

[Ken Reich]

Heh, then it is kind of like snow-flakes... no two cross-drilled rotors will have the same crack pattern.

and i will be the first to post a picture so you can have a good laugh, :wink:

 

[SnowbordrWRX]

As a former structural integrity guy, I will tell you that holes and slots are areas of stress concentration...stresses around holes can be at least 3 times the amount of the stress far from the holes. (I'm not sure what the stress concentration factor is for slots, but if you leave sharp corners in the slots, you're begging for trouble.) You can minimize this by making the holes large enough and also making sure they're spaced far apart enough. Where I work, we use 4 times the diameter of the hole + 0.03", which looks like from the pics you far exceed that...that's good. The holes also need to be flawless, any little scratches in the holes are where cracks will initiate.

 

[Ken Reich]

the holes are chamfered, they did a nice job, :wink:

 

[4MLA1FN]

chamfered. very cool. what kinda shop did this??

 

[CloNeGTS]

Ah, crack propogation discussions.....flashback to materials engineering class......

 

[Ken Reich]

please post when insurance has the sti in their db

take a look at this www.brembo.com

 

[SnowbordrWRX]

Re: Cross Posting

the holes are chamfered, they did a nice job, :wink:

That'll help a little. But what happens if the crack initiates in the center of the hole? Not much you can do there.

 

[chawklit]

What is chamfered?

 

[SnowbordrWRX]

Chamfered is where an edge is filed down so that you don't have a sharp corner. For example, if you had a part that had a square cross-section, chamfering would make the cross section look like an octogon. The edges are less sharp and less likely to chip off and create a crack initiation site.

 

[ldivinag]

crack in center of hole???

that's like saying how much dirt is in a 1 cubic foot hole in the ground???