[DeTomaso] Rear Brake Vent - additional pictures
Ken Green
kenn_green at yahoo.com
Thu Jan 29 17:34:01 EST 2015
The brake upgrade we developed using Porsche 996 Turbo calipers uses Viper 3rd gen (Brembo) mechanical parking brake calipers discovered by Ike Burrid. The 3rd gen Viper uses a combination of these with hydraulic calipers as the standard caliper. Brembo sells kits for over $1,000. We found used Viper calipers for $300 a pair. These are really nice calipers and I think a step above everything else, it was a great find by Ike, but not much use if you aren't running 13.1 by 1.1 inch rotors.
Ken
From: Jack DeRyke via DeTomaso <detomaso at poca.com>
To: andymay24 at gmail.com; steve at snclocks.com
Cc: detomaso at poca.com
Sent: Thursday, January 29, 2015 1:57 PM
Subject: Re: [DeTomaso] Rear Brake Vent - additional pictures
Indeed. Over the years, people who upgraded their Pantera's toy rear
brakes used all kinds of schemes to add legal e-brakes. . People
confuse 'parking brakes' with 'emergency brakes' and they are NOT the
same. Line-locks are hydraulic parking brakes designed for Bobcats &
front-end loaders and are NOT e-brakes. The U.S Gov't has requirements
for real emergency brakes in licensed road vehicles. True 'emergency
brakes 'MUST 'stop a vehicle in 517 ft on a straight, level road using
only the e-brake'. And 'the vehicle must remain within the boundaries
of a 12-ft-wide lane'; spinning in a tight circle while remaining on
the road doesn't count. Ref 'Federal Motor Vehicle Stds #105 & #135'.
Reg 571 part 393.52 in the text describes the test in excruciating
detail.
E-brakes do NOT need to be cable-operated nor hand actuated, but they
DO need to be totally separate from the vehicle's main brake system. I
think using the same rear drum(s) or rotor(s) as on the main brakes is
OK, though. Chrysler cars used to have a band-e-brake & 5th drum on the
driveshaft near the rear end. As was described, Pantera owners have
used Hall's adapted Z-28 rear calipers with its integral cable e-brake,
go-kart cable calipers (Wilwood), early Corvette drum e-brakes (or
small motorcycle drum brakes) adapted inside the hat section of rear
rotors, and others. Some States have stringent yearly vehicle
inspections, too. Fail that and you get no registration sticker.
-----Original Message-----
From: Andy May <andymay24 at gmail.com>
To: Stephen <steve at snclocks.com>
Cc: De Tomaso List <detomaso at poca.com>
Sent: Thu, Jan 29, 2015 8:30 am
Subject: Re: [DeTomaso] Rear Brake Vent - additional pictures
Wow, that looks like a way to seriously increase unsprung mass! Surely
there must be a better way to incorporate a parking brake function when
installing those calipers?
Andy
On Jan 29, 2015 3:56 PM, "Stephen" <[1][1]steve at snclocks.com> wrote:
A A As part of upgrading 5332 I installed Wildwood brake calipers
and a new
A A master cylinder.A I retained the old rear brake calipers for
their
A A emergency brake function.A Given one cannot seal the caliper
cylinders
A A I was trying to figure out an effective vent - and came up with
the one
A A shown in the attached pictures.A OK - a bit redneck, but hey,
I figure
A A it is better than just removing the bleeder valve (in Oklahoma
the mud
A A daubers would plug that hole in 6 months).
A A Stephen Nelson
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-------------- next part --------------
The brake upgrade we developed using Porsche 996 Turbo calipers uses
Viper 3rd gen (Brembo) mechanical parking brake calipers discovered by
Ike Burrid. The 3rd gen Viper uses a combination of these with
hydraulic calipers as the standard caliper. Brembo sells kits for over
$1,000. We found used Viper calipers for $300 a pair. These
are really nice calipers and I think a step above everything else, it
was a great find by Ike, but not much use if you aren't running 13.1 by
1.1 inch rotors.
Ken
__________________________________________________________________
From: Jack DeRyke via DeTomaso <detomaso at poca.com>
To: andymay24 at gmail.com; steve at snclocks.com
Cc: detomaso at poca.com
Sent: Thursday, January 29, 2015 1:57 PM
Subject: Re: [DeTomaso] Rear Brake Vent - additional pictures
Indeed. Over the years, people who upgraded their Pantera's toy rear
brakes used all kinds of schemes to add legal e-brakes. . People
confuse 'parking brakes' with 'emergency brakes' and they are NOT the
same. Line-locks are hydraulic parking brakes designed for Bobcats &
front-end loaders and are NOT e-brakes. The U.S Gov't has
requirements
for real emergency brakes in licensed road vehicles. True 'emergency
brakes 'MUST 'stop a vehicle in 517 ft on a straight, level road
using
only the e-brake'. And 'the vehicle must remain within the boundaries
of a 12-ft-wide lane'; spinning in a tight circle while remaining on
the road doesn't count. Ref 'Federal Motor Vehicle Stds #105 &
#135'.
Reg 571 part 393.52 in the text describes the test in excruciating
detail.
E-brakes do NOT need to be cable-operated nor hand actuated, but they
DO need to be totally separate from the vehicle's main brake system.
I
think using the same rear drum(s) or rotor(s) as on the main brakes
is
OK, though. Chrysler cars used to have a band-e-brake & 5th drum on
the
driveshaft near the rear end. As was described, Pantera owners have
used Hall's adapted Z-28 rear calipers with its integral cable
e-brake,
go-kart cable calipers (Wilwood), early Corvette drum e-brakes (or
small motorcycle drum brakes) adapted inside the hat section of rear
rotors, and others. Some States have stringent yearly vehicle
inspections, too. Fail that and you get no registration sticker.
-----Original Message-----
From: Andy May <[1]andymay24 at gmail.com>
To: Stephen <[2]steve at snclocks.com>
Cc: De Tomaso List <[3]detomaso at poca.com>
Sent: Thu, Jan 29, 2015 8:30 am
Subject: Re: [DeTomaso] Rear Brake Vent - additional pictures
Wow, that looks like a way to seriously increase unsprung mass!
Surely
there must be a better way to incorporate a parking brake function
when
installing those calipers?
Andy
On Jan 29, 2015 3:56 PM, "Stephen" <[1][1][4]steve at snclocks.com>
wrote:
A A As part of upgrading 5332 I installed Wildwood brake calipers
and a new
A A master cylinder.A I retained the old rear brake calipers for
their
A A emergency brake function.A Given one cannot seal the caliper
cylinders
A A I was trying to figure out an effective vent - and came up
with
the one
A A shown in the attached pictures.A OK - a bit redneck, but hey,
I figure
A A it is better than just removing the bleeder valve (in Oklahoma
the mud
A A daubers would plug that hole in 6 months).
A A Stephen Nelson
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