Alex Dark Posted January 12, 2010 Report Share Posted January 12, 2010 Just personal preference really...anybody had experiences with either? got them both sitting next to me....and im about to put anew brake on so thought id ask some advice as to which is most powerful. Brake is a 180mm Hope Mono Trial if that makes any odds at all..... Alligator rotor A2Z wavy I know they're both generic Chinese rotor ...probably made in the same factory; but any opinions from users would be ace Thanks, Alex Quote Link to comment Share on other sites More sharing options...
Revolver Posted January 12, 2010 Report Share Posted January 12, 2010 I picked the one with the most metal to it, cause you'd expect that to mean more friction so more stopping power. Quote Link to comment Share on other sites More sharing options...
LordMersey Posted January 12, 2010 Report Share Posted January 12, 2010 Ive used Wavy and I wasn't overly impressed by them. Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted January 12, 2010 Report Share Posted January 12, 2010 I picked the one with the most metal to it, cause you'd expect that to mean more friction so more stopping power. Here we go... Quick question for you, Tobias; The one with more material may have a larger surface area, but doesn't that mean the other one will give a higher pressure? Quote Link to comment Share on other sites More sharing options...
OD404 Posted January 12, 2010 Report Share Posted January 12, 2010 Here we go... Quick question for you, Tobias; The one with more material may have a larger surface area, but doesn't that mean the other one will give a higher pressure? Frictional force is determined by F=uR where F is the frictional force, u is the coefficient of friction and R is the reaction force of the pad on the rotor so assuming u is constant (same rotor and pad material) we increase F by increasing R. The equation for pressure is P=R/A where P is pressure, R is our reaction force and A is the contact area. Assuming that the pressure being supplied by the brake's hydraulic system is constant we can rearrange to get R where R=P*A. Therefore to increase R we need to increase A. The above is very simplistic, as there are other mechanisms to consider such as heat dissapation (aided by a greater surface area of the rotor) and the use of holes and edges to reduce glazing of the pads. Quote Link to comment Share on other sites More sharing options...
Luke Rainbird Posted January 12, 2010 Report Share Posted January 12, 2010 Here we go... Quote Link to comment Share on other sites More sharing options...
OD404 Posted January 12, 2010 Report Share Posted January 12, 2010 To give some relevant guidance to the OP, it unfortunately does come down to personal preference with disks. What I posted above is probably more relevant to situations where you are looking to reduce speed (downhill or xc applications), whereas for trials we are more interested in the initial bite of the disk which is aided by the edges of the disk... Quote Link to comment Share on other sites More sharing options...
japslap Posted January 12, 2010 Report Share Posted January 12, 2010 To give some relevant guidance to the OP, it unfortunately does come down to personal preference with disks. What I posted above is probably more relevant to situations where you are looking to reduce speed (downhill or xc applications), whereas for trials we are more interested in the initial bite of the disk which is aided by the edges of the disk... totally agree, I've always got by with a hope trials disc but if that's not an option why not try both and see which you prefer! Quote Link to comment Share on other sites More sharing options...
crispyboy Posted January 12, 2010 Report Share Posted January 12, 2010 i wanted to know about rotors as im going to buy a new set of them but i dont know what to go for ? Quote Link to comment Share on other sites More sharing options...
max-t Posted January 12, 2010 Report Share Posted January 12, 2010 a2Z suck. They bend really easy. I dont know about the other one though. Quote Link to comment Share on other sites More sharing options...
Scooter916 Posted January 12, 2010 Report Share Posted January 12, 2010 I have been running the alligator on my XC bike since September and they work great with a BB7 and nokon housing, better power than any stock avid rotor, but one word of advice, the gold TiNi coated calipers take a awhile to bed in, the coating needs to wear down, the standard stainless are better from the start. I just bought an alligator starlite for the front of my mod, I may run it on my SS to bed it in than transfer it back to my mod Quote Link to comment Share on other sites More sharing options...
kristaps Posted January 12, 2010 Report Share Posted January 12, 2010 Hi Go for QUAD xc pulse http://www.allterraincycles.co.uk/product/117707.html i have on my rockman mod..with hope mono trial...lightest rotors i have ever had !..works great ! My bike..you can see them..-> http://www.trials-forum.co.uk/forum/index....=142979&hl= Quote Link to comment Share on other sites More sharing options...
Jamie_Trials Posted January 12, 2010 Report Share Posted January 12, 2010 Aztec rotors rock my socks! Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted January 12, 2010 Author Report Share Posted January 12, 2010 As much as I appreciate people's suggestions , I don't realllly want to spend any more money ..... So if people with experience with these rotors....or just well-educated guesses post in here that'd be ace Quote Link to comment Share on other sites More sharing options...
Mikee Posted January 12, 2010 Report Share Posted January 12, 2010 I use the a2z 180mm on my hope mono trial. It's not amazing but it is live with-able. No experience with the other one though so I can't compare. Quote Link to comment Share on other sites More sharing options...
sstein Posted January 12, 2010 Report Share Posted January 12, 2010 I hav an a2z buzsaw (think that was what it was called anyway) rotor on my trials bike, a hope trials on the front of my 4x bike and a gusset rotor (pretty much the same as the alligator) on the back. Performance wise they are all the same for bite and hold but the gusset is the only one that doesn't seem to overheat going down a huge hill drag anchor style. Quote Link to comment Share on other sites More sharing options...
Mark W Posted January 13, 2010 Report Share Posted January 13, 2010 Got one of these on the front of my bike: Works pretty good Got it in the 180mm size on the front of my mod. One bonus of it is that the dips in the rotor make it look smaller, so the 180 Gusset on the front looks like the same size as the 160mm Mono Trial I've got on the back. Definitely Mono Trial for the rear... Quote Link to comment Share on other sites More sharing options...
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