[DeTomaso] Rear Brake Vent - additional pictures

Thu Jan 29 16:57:26 EST 2015

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]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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References

   1. mailto:steve at snclocks.com
   2. mailto:DeTomaso at poca.com
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-------------- next part --------------
   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
     _______________________________________________
     Detomaso Forum Managed by POCA
     DeTomaso mailing list
     [2][2]DeTomaso at poca.com
     [3][3]http://poca.com/mailman/listinfo/detomaso_poca.com
     To manage your subscription (change email address, unsubscribe,
     etc.) use the links above.

References

   1. [4]mailto:steve at snclocks.com
   2. [5]mailto:DeTomaso at poca.com
   3. [6]http://poca.com/mailman/listinfo/detomaso_poca.com

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References

   1. mailto:steve at snclocks.com
   2. mailto:DeTomaso at poca.com
   3. http://poca.com/mailman/listinfo/detomaso_poca.com
   4. mailto:steve at snclocks.com?
   5. mailto:DeTomaso at poca.com?
   6. http://poca.com/mailman/listinfo/detomaso_poca.com
   7. mailto:DeTomaso at poca.com
   8. http://poca.com/mailman/listinfo/detomaso_poca.com