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#1 |
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Big Brake Kit Discovery
well i had some extra time at the shop and decided to try something out just for s&g's. i discovered that the AEM big brake kit for civics BOLTS ON to the yaris. NO Cutting, Drilling, Cursing or Modifying to bolt them on. 12" rotors and they fit under my 16" wheels. i did have to clearance the front top of my caliper .010" or so to have a little clearance for my stick on wheel weights.
What you will need: 1. 7mm Spacer to go between Stock Yaris caliper bracket and caliper extension bracket that comes with the brake kit 2. Longer Bolts I used 12mmx1.25mmx50mm bolts instead of the stock caliper bracket bolts 3. Nothing else ![]() ![]() |
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#2 |
![]() ![]() ![]() Drives: 09 5dr Yaris Join Date: Mar 2009
Location: Dallas, TX
Posts: 443
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What all is included in said kit? The bracket for the caliper and the rotor and thats it?
Brent |
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#3 |
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yeah, rotor, bracket, a few bolts
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#4 |
![]() ![]() ![]() ![]() Drives: 2010 Yaris Sedan Join Date: Oct 2010
Location: Kentucky
Posts: 529
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So, how much better is the braking with a bigger rotor and stock caliper?
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#5 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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^ good question. You have the same caliper/pad operating on a rotor that is now spinning faster. Braking might be worse, not better. It will definitely be hotter.
Overall though, very neat idea.
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
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#6 |
![]() ![]() Drives: 2010 Yaris ce Join Date: Jan 2010
Location: Calgary Ab
Posts: 71
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How would the rotor be turning faster with a bigger diameter rotor?
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#7 | |
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well first track day will be next sunday so i will find out. feels pretty good driving around town though. some hawk pads are on the way |
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#8 | |
![]() ![]() ![]() ![]() Drives: Yaris LB Turbo Join Date: Aug 2006
Location: Miami FL
Posts: 782
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#9 | |
![]() ![]() ![]() Drives: 2009 3dr LB Manual Join Date: Mar 2010
Location: Dublin, Ohio
Posts: 412
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#10 | |
![]() ![]() ![]() ![]() ![]() Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,891
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Quote:
objects on the same shaft will have the same angular velocity but if they are different size they will have different linear velocity. this is a tough subject seeing as the speed of the wheel is controlled by the shaft and the wheel on the road controls the speed (miles) at which the car is travelling. you cannot use revolutions per mile to compare, my school website is down so i cant get to my notes or i would be able to tell you exactly what the linear velocity in relation to the brake pads would be.
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If it has boobs or wheels sooner or later your gonna have problems with it ![]() |
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#11 | |
![]() ![]() ![]() ![]() Drives: Yaris LB Turbo Join Date: Aug 2006
Location: Miami FL
Posts: 782
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#12 | |
![]() ![]() ![]() Drives: 2009 3dr LB Manual Join Date: Mar 2010
Location: Dublin, Ohio
Posts: 412
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Quote:
Look at it like what a previous poster said. If something has a set angular velocity (let's say 2,000 rpm), then you can determine the linear velocity at different points away from the center. The linear velocity at a point away from the center is (omega) * (r). (Omega) is the angular velocity, (r) is the radius. Looking at that basic equation, the larger diameter has a larger linear velocity than the smaller diameter since (omega) remains constant. Tires and the rolling diameter is a different can of peanuts because they are driven from the center and the outer diameter. Again, I'm just trying to help confusion, and not be a blankity-blank. |
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#13 |
![]() ![]() ![]() ![]() ![]() Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009
Location: Angus, Ontario
Posts: 1,891
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very nice...... this seems like a less expensive way to get a bigger brake look on aftermarket rims....
if only have a rear disk kit with less work....
__________________
If it has boobs or wheels sooner or later your gonna have problems with it ![]() |
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#14 |
![]() ![]() ![]() ![]() ![]() ![]() ![]() Drives: 07 Yaris Turbo Join Date: May 2007
Location: Canoga Park, CA
Posts: 14,859
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If you think about it, at the perimeter, a larger diameter "circle" has to travel faster to achieve one revolution as a smaller circle. The outside of a larger rotor is where the pad contacts it. I'm armchair discussing here, but I do know the friction would be greater to slow the velocity, causing more heat.
And all of that might not make a huge difference. Let's hear the OP's review!
__________________
Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific. |
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#15 | |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson ![]() Bye bye 1NZ... |
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#16 | |
![]() ![]() Drives: Yaris 2010 Liftback Join Date: Feb 2010
Location: Massachusetts
Posts: 64
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#17 |
![]() Drives: ///M3, Yaris Join Date: Dec 2010
Location: Chehalis
Posts: 22
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I just see stock pads being chewed up...
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#18 |
![]() ![]() ![]() Drives: 2009 3dr LB Manual Join Date: Mar 2010
Location: Dublin, Ohio
Posts: 412
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You will still have the same angular velocity (rpms), but the tangential velocity at the outer diameter IS bigger (faster). However, you need to look at the main benefit of this system. The larger diameter of the rotor, and the pad being further away from the center INCREASES the torque the brakes can apply. Torque equals F X D (force times distance). So you should notice an improvement. As far as heat, I don't see that as a problem. Sure, aftermarket pads will help, but the stocks should work for now (unless you track the car).
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