|
| Site Partners: | SpotterGuides | Veloce Books |
| Related Sites: | Your Link Here |
|
|
|||||||||
|
||||||||||
|
|
|||||||||
|
||||||||||
|
|
2 Apr 2010, 09:38 (Ref:2665312)
|
#1 | |
|
Veteran
Join Date: Oct 2008
Posts: 728
 |
Brake Prssure Sensors - How many?
To measure Brake pressure (data logging) in my Formula Ford, I am thinking of installing a pressure sensor.
The car has 2 master cylinders and 2 circuits. What do most people do measure pressure from both using 2 sensors or just 1 hooked up to the front brake circuit? |
|
|
|
|
2 Apr 2010, 09:48 (Ref:2665315)
|
#2 | ||
|
Veteran
Join Date: Jul 2005
Posts: 1,981
|
Quote:
If you want to understand the brake balance, then you will need to take readings from both the front and rear brake circuits. I don't know for sure that is what most people do, but I would imagine so. The extra effort/cost involved is minimal. |
||
|
|
|
|
2 Apr 2010, 11:50 (Ref:2665363)
|
#3 | ||
|
Veteran
Join Date: Dec 2005
Posts: 1,164
|
If budgets are tight, then just use the front circuit pressure to determine braking points and efforts.
I can't stretch to a pressure sensor, but I can afford a £7 pressure switch, so I just have on/off logging for now. When I can afford a pressure sensor, I'll only be able to afford one at a time. Phoenix clearly has a bigger wallet than me! 
|
||
|
|
__________________
Dallara F307 Toyota, MSV F3 Cup - Class and Team Champion 2012 Monoposto Champion 2008, 2010 & 2011.
|
|
2 Apr 2010, 13:15 (Ref:2665406)
|
#4 | ||
|
Veteran
Join Date: Jul 2005
Posts: 1,981
|
Quote:
|
||
|
|
|
|
4 Apr 2010, 02:51 (Ref:2666232)
|
#5 | ||
|
Racer
Join Date: Nov 2007
Posts: 105
|
We run 2 in a small block that is plumbed off the master cylinders with an etra banjo the block has bleaders.
|
||
|
|
|
|
4 Apr 2010, 07:23 (Ref:2666276)
|
#6 | |
|
Veteran
Join Date: Oct 2008
Posts: 728
|
do you have any pictures of this setup? would be nice to see....
|
|
|
|
|
|
4 Apr 2010, 07:54 (Ref:2666312)
|
#7 | ||
|
Veteran
Join Date: Jan 2004
Posts: 1,534
|
This is the sensor block that I have on my car.
|
||
|
|
__________________
Mos Eisley spaceport, A more wretched hive of scum and villiany you will not find anywhere in the galaxy, we must be careful.
|
|
4 Apr 2010, 20:52 (Ref:2666794)
|
#8 | |
|
Veteran
Join Date: Oct 2008
Posts: 728
|
Thanks for the picture. I could use a block setup, but I guess that will cost silly money. I will just end up using the pipe method and fit it inbetween.
BTW what sensors are you using? and what pressure are they rated to? |
|
|
|
|
|
4 Apr 2010, 22:08 (Ref:2666823)
|
#9 | ||
|
Veteran
Join Date: Jan 2004
Posts: 1,534
|
1000psi Motec units.
|
||
|
|
__________________
Mos Eisley spaceport, A more wretched hive of scum and villiany you will not find anywhere in the galaxy, we must be careful.
|
|
8 Apr 2010, 13:08 (Ref:2668835)
|
#11 | ||
|
Racer
Join Date: Aug 2007
Posts: 394
|
It depends what are you trying to do. I think Phoenix and Tristan sumarized all in the first 2 answers. From the cheaper to the costly:
a) Switch: know your brake points b) One sensor: know brake points, how you modulate brake pedal and the force applied to the pad c) Two sensors: b) + brake balance |
||
|
|
__________________
Racing is in my blood.
|
|
9 Apr 2010, 00:16 (Ref:2669188)
|
#12 | |
|
Veteran
Join Date: May 2007
Posts: 3,211
|
You don't need to use a complicated block etc. Just use T fittings in the line near the MC's, simple and quick.
|
|
|
|
|
|
14 Apr 2010, 14:50 (Ref:2672665)
|
#13 | ||
|
Rookie
Join Date: Jan 2007
Posts: 78
|
http://stores.shop.ebay.co.uk/See-it-Sold-it has some low cost pressure transducers.
BTW, what sort of pressures are likely to be involved in a typical saloon race car setup ? |
||
|
|
__________________
CSCC TinTops #7
|
|
8 May 2010, 22:12 (Ref:2686712)
|
#14 | ||
|
Rookie
Join Date: Jun 2007
Posts: 15
|
Quote:
The wrong type of diaphragm will result in a soft brake pedal and cause the braking performance to go down. Pressures are wholly dependent on Master Cylinder size and tubing size. And any lengths of Flexible tubing (aeroquip etc.) vs hard lines. The pressures could be anywhere from 700 to 1200 lbs, some cases even higher... If all you are looking for is braking performance, as related to the drivers foot, then most of this information can be found with a Long G sensor. You just need to substract any compression/aero de-accellerations from the actual braking events. Bias can also be tracked via a system that has 4 wheel speed sensors. It's crude, but at least you know what wheel is locking first. IMHO |
||
|
|
|
|
16 May 2010, 00:04 (Ref:2691202)
|
#15 | ||
|
Veteran
Join Date: Jan 2007
Posts: 509
|
Please don't buy "cheap" pressure transducers for brake pressure. If you can't afford something like a Variohm unit then don't do it at all.
|
||
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Suspension sensors | forestdweller | Racing Technology | 4 | 8 May 2010 22:30 |
| CAN and current sensors | Michael24 | Racing Technology | 4 | 3 Jul 2009 03:29 |
| reverse parking sensors... | bella | Road Car Forum | 9 | 5 May 2007 02:38 |
| optic sensors | hornytoad | Formula One | 19 | 25 Apr 2001 10:04 |
Linear Mode
