Braking (covering the brakes). - Dorkiphus.net
Navigation » Dorkiphus.net > Technical & Track Disussions > Track Talk » Braking (covering the brakes).

Track Talk A place to talk about Track and DE Events, share driving tips and other Track related items.

Reply
 
Thread Tools Display Modes
  #1  
Old 11-18-2020, 08:05 PM
VaSteve's Avatar
VaSteve VaSteve is offline
Essential Personnel
 
Join Date: Oct 2003
Location: Western Prince William County
Posts: 13,839
VaSteve has one HoF thread
Default Braking (covering the brakes).

I found this motorcycle video where the guy talks about covering the brakes and some other interesting bits about rubber, etc. I have not heard about this in car driving. I'm kind of brain dead so maybe one of you smarter guys can talk about why this does/doesn't apply in car world.

https://youtu.be/HiOGAYOXN8U

Sent from my moto z4 using Tapatalk
__________________
1983 911 SC Targa - 1990 944 S2 - Past: 1986 944 n/a - "Doublemint"
"Every one drives to DE but few fly to flight school." - Vicegrip
"Sometimes arguing/reasoning w/Steve is like looking at a compass while having a 2lb magnet in your pocket." - }{arlequin
Reply With Quote
  #2  
Old 11-18-2020, 10:42 PM
mlytle mlytle is online now
 
Join Date: Nov 2014
Location: alexandria
Posts: 376
mlytle
Default

all that theory applies to cars also. we teach it at schools. adding pressure to the brakes at a rate the tires can handle as the weight transfers to the front allowing more pressure. it is basic friction circle management/weight transfer stuff. for motorcycles that have soft suspensions the lag/dive is a lot more pronounced.

as for the "covering/preload" thing...not really practical in daily use to preload...it turns the brake lights on. covering is good, but preload.... if much preload is needed, then the brake system needs adjusting..


(i ride and track motorcycles also)
__________________
Marshall
----------------
75 M2
88 M3
97 M3
Reply With Quote
  #3  
Old 11-19-2020, 09:43 AM
racer's Avatar
racer racer is offline
 
Join Date: Jul 2004
Location: South Riding, Va
Posts: 7,021
racer
Default

Sounding similar to your "cover the brakes" motorcycle scenario, Mercedes (and maybe others?) back in the late 1990s rolled out similar "driver activated" safety feature. If you abruptly remove your foot from the throttle, in anticipation of you hitting the brakes, the calipers are squeezed to push the brake pads closer to the rotor without actually engaging the brakes. Given vehicles now with a bevy of radars and nearly autonomous features, "pre braking" is likely happeneing without many drivers noticing.

I imagine the generally less stable motorcycle, especially one without ABS, would benefit from this practice.
__________________
Dave
- 1970 914-6
- 1987 924S
Past
- 2000 Boxster
- 1987 944
- 1978 911 Euro SC
- 1976 914 2.0
- 1970 914 1.7 / 2056cc

Last edited by racer; 11-19-2020 at 10:16 AM.
Reply With Quote
  #4  
Old 11-20-2020, 10:42 PM
feedftr's Avatar
feedftr feedftr is offline
 
Join Date: May 2013
Location: Great Falls
Posts: 43
feedftr
Default

Good article on modern braking assist

https://auto.howstuffworks.com/car-d...ake-assist.htm
__________________
Tom M.

14 Cayman S
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump