Alligator Ti-Nitride, Gold Rotors whats your view?

mrsavory

whats yoru view on thease i've heard good and bad reports about
them?

Salsa

I run them & they work great, didn't get the coated ones though as they look a bit tacky & supposedly the finish wears off quickly anyway.

mrsavory

i am tempted to get thease for my next project they look bad ass in the pictures
cheers for the info

dave_hill

I can't say that I like the sound of titanium nitride coated discs!

It's very hard-wearing and low friction - hence it is used to coat fork stanchions (that's the greeny-gold colour) and it is also used on drill bits and other cutting tools.

I can understand th ehard wearing bit but why try to reduce the co-efficient of friction on a disc?

Chaz.Harding

To be fair, the contact area between the pads is small, so the pressure is great. It doesn't matter so much that Ti-Nitride is slick - the pressure the pads apply is more than enough. If it wasn't, they wouldn't sell many then, would they...!



Also, as Salsa mentioned, the area that the pads touch wears off quickly anyway, but the rest of the disc is still left coated.

Might be worth a blast! Mind, they aint expensive...

One last thing, if you are that worried, install the discs, and before you go out, turn your bike up-side down, and spin the wheels, rubbing the contact area with some emery cloth / fine-ish glass paper to rub the coated surface off a bit. Not that you'll need to - if they didn't work well, no-one would buy them!

dave_hill

bigchazrocks wrote:

Also, as Salsa mentioned, the area that the pads touch wears off quickly anyway, but the rest of the disc is still left coated.

One last thing, if you are that worried, install the discs, and before you go out, turn your bike up-side down, and spin the wheels, rubbing the contact area with some emery cloth / fine-ish glass paper to rub the coated surface off a bit.

So what's the point then? What performance advantage does it offer?

cat_with_no_tail

dave_hill wrote:

bigchazrocks wrote:

Also, as Salsa mentioned, the area that the pads touch wears off quickly anyway, but the rest of the disc is still left coated.

One last thing, if you are that worried, install the discs, and before you go out, turn your bike up-side down, and spin the wheels, rubbing the contact area with some emery cloth / fine-ish glass paper to rub the coated surface off a bit.

So what's the point then? What performance advantage does it offer?

The same performance advantage as gold hubs over black, gold QR skewers over black and pretty much any other colour coded product. It's a cosmetic improvement, not a performance one.

Edit: Actually, I see that they do mention something about being lightweight.

allthegearnoidea

i keep looking at these mainly because they are cheaper than std discs ie hope. and also a fair chjunk lighter!
the cirus ones are the newer of the designs iirc.
nearly bought the gold ones for ythe carbon bike as every little bit of bling helps!! 8)

Chaz.Harding

dave_hill wrote:

bigchazrocks wrote:

Also, as Salsa mentioned, the area that the pads touch wears off quickly anyway, but the rest of the disc is still left coated.

One last thing, if you are that worried, install the discs, and before you go out, turn your bike up-side down, and spin the wheels, rubbing the contact area with some emery cloth / fine-ish glass paper to rub the coated surface off a bit.

So what's the point then? What performance advantage does it offer?

Well, this might sound a bit like I abuse my bike, but if the rotor (apart from the contact area) is Ti-Ni coated, it's harder for it to rust / corrode.

Also, as mentioned, they are VERY light, compared to OEM discs, much cheaper, and the rest of the disc (apart from the pad-contact area, remember) will remain gold-y / brown-y for a loooong time.

Enough reasons to buy an Alligator disc?

Anonymous

hang on. If it's proper Ti Nitride, there's no way in hell you could take it off with an emery cloth, and definitely no way your brake discs would wear the "coating" off.
Sounds like those cheap drill bits on QVC et al, where you get a set of 100 "quality titanium tipped drill bits" for a fiver :?

dave_hill

bigchazrocks wrote:

dave_hill wrote:

So what's the point then? What performance advantage does it offer?

Well, this might sound a bit like I abuse my bike, but if the rotor (apart from the contact area) is Ti-Ni coated, it's harder for it to rust / corrode.

Fail.

When was the last time you saw a stainless steel disc rusting or otherwise corroding? The clue's in the name...

bigchazrocks wrote:

Also, as mentioned, they are VERY light, compared to OEM discs, much cheaper, and the rest of the disc (apart from the pad-contact area, remember) will remain gold-y / brown-y for a loooong time.

Enough reasons to buy an Alligator disc?

No, not at all. Still don't see the point - if they're that much lighter AND cheaper AND (allegedly) ti-nitrided, then that immediately raises my suspicions.

allthegearnoidea

its the aries not the cirrus as i thought! lol! seems the aries is the ti coated version and the cirrus is the stainless one!
linky here to home ppage
http://www.alligatorcables.com/home1.htm

102g for 180mm rotor,(in either stainless or ti)
from wehat i have seen and heard they are very good rotors and the benefit is that they are cheaper than std oem ones, typically £17 for a 180 in ti coating and 15 for a std compared to hopes at £22 ish

their std normal looking rotor is 185g for a 185 mm so they are 80g a rotor lighter there!

The Rookie

dave_hill wrote:

When was the last time you saw a stainless steel disc rusting or otherwise corroding? The clue's in the name...

FAIL

Many grades of stainless will develop a rusty surface (T304 for example) but the rust will never go deep enough to significantly effect the mechanical integrity.

Simon

Anonymous

There's no way these are titanium nitride coated for that price. Titanium COLOURED anodizing, maybe.

dave_hill

The Beginner wrote:

dave_hill wrote:

When was the last time you saw a stainless steel disc rusting or otherwise corroding? The clue's in the name...

FAIL

Many grades of stainless will develop a rusty surface (T304 for example) but the rust will never go deep enough to significantly effect the mechanical integrity.

Simon

DOUBLE FAIL TIMES A MILLION AND NO RETURNS!!!!

I didn't say that all grades of stainless steel don't rust. I asked when was the last time you saw a rusted stainless brake disc?