First Look: 914-6 Alloy Rear Calipers, ...about 30 days out. |
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First Look: 914-6 Alloy Rear Calipers, ...about 30 days out. |
Eric_Shea |
Aug 14 2012, 08:16 AM
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#1
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
The time has come. We are beginning to take pre-orders on the 914-6 rear calipers.
As you know, us 914 owners have long been looking for a solution to a properly biased brake system. The fronts have been the easy part, bolt on a pair of Brembo's ...or a 3.5" 911 front suspension and you would have your choice of larger calipers with 48mm pistons up front. But, what about the rears? You need a 38mm piston to give you the correct bias. For 914 owners that meant a long and winding road of searching for the proper solution which usually boiled down to two things; uber-rare (and uber-expensive) original 914-6 calipers or 911 rear calipers and a confusing handbrake assembly or, worse yet, 911 rear calipers and no handbrake solution. Well, you're looking at the true bolt on solution. Aluminum castings of the famous 914-6 rear calipers. Final weigh-in has yet to be established but, we think we'll be under 3lbs each with the aluminum pistons. These simply bolt on and use stock handbrake cables and parts. Larger pistons and larger pads make this the prefect rear caliper solution for Brembo bolt-ons and S-Caliper or A-Caliper upgrades. What you are looking at is a raw alloy assembled prototype prior to anodizing. (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-b.xx.fbcdn.net-1110-1344953789.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-b.xx.fbcdn.net-1110-1344953790.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-a.xx.fbcdn.net-1110-1344953790.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/sphotos-b.xx.fbcdn.net-1110-1344953791.4.jpg) |
dlestep |
Aug 20 2012, 08:22 PM
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I am smilin'... Group: Members Posts: 890 Joined: 15-January 08 From: Sunrise Florida Member No.: 8,573 Region Association: South East States |
I have heard about (and tired of) the subject of flexing of aluminum calipers.
It started with Wilwood calipers in the '60s. No matter what material is used, flex is always present in a cantilevered grip design. Friction materials and fluids have advanced since the '60s and allow less pedal input, (clamp pressure). In the '90's metal matrix composite rotors were 40 percent more thermally conductive than steel, heavy, and chewed up pads really fast. During the turn of the century, composite and ceramic rotors evolved increasing friction ten fold. Carbon composite rotors were used on the Galaxy C5A way-back in the '80s, and used on the LM X35 Rolls-Royce Allison Liftfan transmission in 2000. Aircraft actuators, and pressure manifolds have always been made of aluminum alloys and other exotics operating at 6,000lbs or more, far more than our brake pressures. If you have a Cadillac, use steel to bring that barge under control. If you have a nimble, light-weight sports car, that could reach 1g using stock tires and solid rotors with single puck, steel calipers, then think what you could do on the skid pad with proper tires, suspension settings and less unsprung weight. |
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