Hey Everybody!
Hopefully by now you have checked out the May issue of HCI magazine, currently at bookstores, which features our Big Brake kit!
And after wanting to do you guys a favor and get more of your running our kit, WE HAVE LOWERED OUR PRICE!
THE WHOLE KIT NOW RETAILS FOR $799 COMPLETE!
That should make everyone happy!
Take care!
ChrisUnderground Motorsports.com
Supra TT/ 300ZX Big Brake Kit for the 240SX released!
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underground
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I need more money:(
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underground
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underground
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My assumption is that the answer is not known then.
You are adding significant braking force to the front brakes. Generally you would want your brake bias (the balance of front vs rear braking force) to be such that the front brakes lock up just before the rear brakes would lock up. This provides for the smoothest application of braking force and maximizes the utilization of all four tire's threshholds.
Of course that is the generalization - there are instances where you would want more bias forward or backward depending on the circumstances (trail braking, rotation on a rally stage, etc) hence why many competition cars utilize a valve to adjust brake bias in the car.
My question really is given equal sized tires all around before and after adding this front bbk how much has the brake bias shifted forward? Ideally if you have increased the braking force in the front by 20%, it would be desirable to increase the braking force in the rear by a like amount unless the car was previously unbalanced which has not been my impression of the 240sx. This could for instance be compensated for in part by the use of larger tires in the rear to increase the frictional impact of the larger tire patch.
More on the topic:http://www.stoptech.com/whitep...e.htm
You are adding significant braking force to the front brakes. Generally you would want your brake bias (the balance of front vs rear braking force) to be such that the front brakes lock up just before the rear brakes would lock up. This provides for the smoothest application of braking force and maximizes the utilization of all four tire's threshholds.
Of course that is the generalization - there are instances where you would want more bias forward or backward depending on the circumstances (trail braking, rotation on a rally stage, etc) hence why many competition cars utilize a valve to adjust brake bias in the car.
My question really is given equal sized tires all around before and after adding this front bbk how much has the brake bias shifted forward? Ideally if you have increased the braking force in the front by 20%, it would be desirable to increase the braking force in the rear by a like amount unless the car was previously unbalanced which has not been my impression of the 240sx. This could for instance be compensated for in part by the use of larger tires in the rear to increase the frictional impact of the larger tire patch.
More on the topic:http://www.stoptech.com/whitep...e.htm
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TS13POWERS
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underground
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TS13POWERS
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underground
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burnin240sx
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turboICE wrote:My assumption is that the answer is not known then.
You are adding significant braking force to the front brakes. Generally you would want your brake bias (the balance of front vs rear braking force) to be such that the front brakes lock up just before the rear brakes would lock up. This provides for the smoothest application of braking force and maximizes the utilization of all four tire's threshholds.
Of course that is the generalization - there are instances where you would want more bias forward or backward depending on the circumstances (trail braking, rotation on a rally stage, etc) hence why many competition cars utilize a valve to adjust brake bias in the car.
My question really is given equal sized tires all around before and after adding this front bbk how much has the brake bias shifted forward? Ideally if you have increased the braking force in the front by 20%, it would be desirable to increase the braking force in the rear by a like amount unless the car was previously unbalanced which has not been my impression of the 240sx. This could for instance be compensated for in part by the use of larger tires in the rear to increase the frictional impact of the larger tire patch.
More on the topic:http://www.stoptech.com/whitep...e.htm
I understand exactly what your saying and i thought that at first but you have to think about how brakes work too. The front brakes engage first, and scince this is an FR car, the weight of the car and motor is shiftedon the front tires under braking so the tires in the front would have drasticly more down force, and therefore traction than the rears. If the breaking was equal, the back tires would lock up easy and then you would be all over the place and could possible park your car inside a track wall
. If i am wrong, someone please correct me this is just a thought!I wasn't looking for equal I was looking for how the dynamic balance of the brakes would be affected by such an upgrade. You want front bias - but not too much. You don't want the front bearing all the braking forces with the rears just along for the ride.
Even though stoptech understands this (see the linked article in my prior post), they can't even answer this question on all of their front brake upgrades. It takes a lot of car specific research to get the right answer. That is part of my concern - I am not going to throw a set of brakes on because they are bigger without knowing its impact on my braking bias. Now for instance the rotor is substantially larger but the piston and pad size could be smaller resulting in the same braking force as before and the same balance as before - but with cooler brakes. That would be a good thing and worth getting then.
For the street or drag, braking bias can be more flexible but for track, and I would imagine drifting, braking bias is very important to the car's overall balance and performance.
Even though stoptech understands this (see the linked article in my prior post), they can't even answer this question on all of their front brake upgrades. It takes a lot of car specific research to get the right answer. That is part of my concern - I am not going to throw a set of brakes on because they are bigger without knowing its impact on my braking bias. Now for instance the rotor is substantially larger but the piston and pad size could be smaller resulting in the same braking force as before and the same balance as before - but with cooler brakes. That would be a good thing and worth getting then.
For the street or drag, braking bias can be more flexible but for track, and I would imagine drifting, braking bias is very important to the car's overall balance and performance.