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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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ARGH!!! brake controller 104
I bought a brake controller that uses a sensor in the brake line. Today, I
took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl |
#2
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ARGH!!! brake controller 104
Karl Townsend wrote:
I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Take the whole thing off? Maybe post on the automotive newsgroup, and include you make & model of truck? Writing built in test code for just about any mechanical device is a bitch and a half -- you've got this computer that is deaf and blind, that's trying to deduce the health of some mechanical hardware without being able to sniff or look for leaks, etc. False alarms are common, even when the assembly _isn't_ broken. So I'm not surprised that you confused the poor thing. Either the amount that the pressure sensor moves makes the system look leaky, or there's still a trapped bubble, or your brake controller's BIT function remembers when it's _been_ broken and you need to go reset the code. -- Tim Wescott Control system and signal processing consulting www.wescottdesign.com |
#3
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ARGH!!! brake controller 104
On Mar 24, 6:32*pm, "Karl Townsend"
wrote: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl Did you bleed the line to the sensor? You may have unbalanced the two hydraulic circuits. jsw |
#4
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ARGH!!! brake controller 104
"Jim Wilkins" wrote in message ... On Mar 24, 6:32 pm, "Karl Townsend" wrote: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl Did you bleed the line to the sensor? You may have unbalanced the two hydraulic circuits. jsw Yea, step 1 above. What are you talking about unbalancing the circuits??? I just talked with "the kid".I 'll bleed the rear brakes tommorrow. if that don't work, I'll remove the sensor. Karl |
#5
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ARGH!!! brake controller 104
Pressure differential valve needs reset? No make/model.... MikeB 93 ford 350. What the heck is this and how is it done? Karl |
#6
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ARGH!!! brake controller 104
Karl Townsend wrote: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl This is why there are few aftermarket trailer brake controllers that tap into the trucks brake system in any way. It's a big product liability insurance issue modifying the factory brake system, and it's also a big DIY installation issue with people not having the correct manuals to bleed the brake system properly. You finally said it's a '93 Ford 350, I'm not familiar with them, but it's recent enough that it may have an anti-lock brake system. If it does it may require a special bleeding procedure requiring a higher end scan tool, and I believe it's pre-OBDII, so it's not very standardized. As someone noted, you need to bleed and dead end line to the pressure sensor, or you'll have an air bubble stuck there. I believe Autozone has some manual pages available online for common procedures like this. You can also buy a subscription to Alldata DIY to get access to the manuals. You can buy the factory manuals from HELM. You could try one of the cheapo manuals from an auto parts store, but you take your chances with them vs. the factory manuals. |
#7
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ARGH!!! brake controller 104
On Mar 24, 7:34*pm, "Karl Townsend"
wrote: Pressure differential valve needs reset? No make/model.... MikeB 93 ford 350. What the heck is this and how is it done? Karl Is there a connector for a pressure differential switch on the front end of the master cylinder? It's shown on the Aerostar in my 1991 service manual. jsw |
#8
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ARGH!!! brake controller 104
Karl Townsend wrote:
I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl If this 93 has ANY type of ABS you can forget about using a tapped line for the brake controller. The sensor shows up as a leak to the computer. Even if it doesn't have ABS it is likely that the sensor has a weaker spring than the switch in the line which senses brake failure and trips the light. These are why nobody uses them any longer. They cause a LOT of problems in modern braking systems. Plus the better electronic models do as good if not a better job, and they are easier to install. Just make sure they are level. -- Steve W. |
#9
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ARGH!!! brake controller 104
"Jim Wilkins" wrote in message ... On Mar 24, 7:34 pm, "Karl Townsend" wrote: Pressure differential valve needs reset? No make/model.... MikeB 93 ford 350. What the heck is this and how is it done? Karl Is there a connector for a pressure differential switch on the front end of the master cylinder? It's shown on the Aerostar in my 1991 service manual. jsw there's an electrical connector under the middle of the plastic reservoir. The reservoir feeds both the front part of the master cylinder and the rear part. I didn't try very hard, but the connector doesn't want to come apart. Karl |
#10
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ARGH!!! brake controller 104
"Steve W." wrote: Karl Townsend wrote: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl If this 93 has ANY type of ABS you can forget about using a tapped line for the brake controller. The sensor shows up as a leak to the computer. Even if it doesn't have ABS it is likely that the sensor has a weaker spring than the switch in the line which senses brake failure and trips the light. These are why nobody uses them any longer. They cause a LOT of problems in modern braking systems. Plus the better electronic models do as good if not a better job, and they are easier to install. Just make sure they are level. It is a pressure sensor, not a pressure switch. It has essentially no displacement and will not show as a leak of any kind. The factory integrated trailer brake controllers use such sensors. Most likely he has an air bubble trapped in the sensor barrel, as well as potentially having an ABS bleeding issue. |
#11
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ARGH!!! brake controller 104
MikeB wailed:
Pressure differential valve needs reset? No make/model.... MikeB There's a "low-tech" way to reset those valves. First, there's no indication whether it's the front or rear that's caused the imbalance. That means you'll have to work on both circuits before you get it. Put a bleeder hose onto (say) the front, and have a helper go through the exercise of filling the hose until there's some fluid in your reservoir so it can't back bubbles into the system. Y'know... push pedal, crack the valve, close the valve, release the pedal... and so on. Once the hose and catch bottle both have fluid in them, have your helper push on the pedal fairly hard, then crack the valve open more than just for bleeding. Have the helper make sure they don't lift the pedal until you close the valve again. Now you've deliberately off-set the balance valve to the front. (front pressure low condition). Now go to the rear. Repeat the exercise, but SLOWLY AND GENTLY pressing the pedal while slightly cracking the valve AND WATCHING the light. At some really twitchy point in the pedal travel, the light will go out. Helper hollers "OUT", and you simultaneously close the bleed. It's worked for me a dozen or so times. Tricky, yes. You might have to do it three or four times before you get it right. Clue here -- when watching the light, if it blinks off then on again, you're "past center". Then it's the other end of the vehicle you need to repeat the operation on. LLoyd |
#12
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ARGH!!! brake controller 104
On Mar 24, 6:35*pm, "Karl Townsend"
wrote: "Jim Wilkins" wrote in message ... On Mar 24, 7:34 pm, "Karl Townsend" wrote: Pressure differential valve needs reset? No make/model.... MikeB 93 ford 350. What the heck is this and how is it done? Karl Is there a connector for a pressure differential switch on the front end of the master cylinder? It's shown on the Aerostar in my 1991 service manual. jsw there's an electrical *connector under the middle of the plastic reservoir. The reservoir feeds both the front part of the master cylinder and the rear part. I didn't try very hard, but the connector doesn't want to come apart. |
#13
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ARGH!!! brake controller 104
Karl Townsend wrote: Pressure differential valve needs reset? No make/model.... MikeB 93 ford 350. What the heck is this and how is it done? Karl An important safety note now that you've indicated that your tow vehicle is a 350: "A nearly new gooseneck trailer followed me home from the auction. Its a 36' deck over dual tandem axles, 16" truck tires, beaver tail with flip down ramps. I could safely haul a 25,000 lb. machine using my truck." Your safe hauling capacity is substantially less than the 25,000# that you noted earlier. The maximum 5th wheel / gooseneck Gross Combined Weight Rating (GCWR) for any configuration of a 2009 model year F350 is 27,000#. The lowest rating for a DRW configuration is 10,400# and I presume you have a DRW since you indicated a dump bed. I also believe a 1993 model will be somewhat less as they have raised the ratings over the years. I will use the 2009 F350 ratings and presume that your 36' dual tandem trailer has a dry weight of 5,000# for these calculations, but the trailer may well weigh more and the trucks GCRW may well be less. I will also use the lowest possible curb weight for any F350 DRW configuration of max GCRW capacity at 7,024#. For the dump bed I will assume 1,000# over a standard pickup bed. GCRW: 27,000# GCRW: 10,400# Curb: -7,024# Curb: -7,024# Dump: -1,000# Dump: -1,000# Trlr: -5,000# Trlr: -5,000# --------------- --------------- Cargo: 13,976# Cargo: -2,624# As you can see, no possible configuration gets you anywhere near 25,000# of cargo capacity without vastly exceeding GCRW and the worst case truck configuration with wimpy engine is over GCRW with the trailer empty. Please run this calculation with the actual GCRW for your truck configuration and the actual trailer weight so you know what your safe cargo capacity really is. This is particularly important since you might be considered commercial, both from your farm, as well as Federal Motor Carrier Safety regulations due to weight. If you want to tow this trailer at full capacity you will need at least a class 5 truck (F550). |
#14
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ARGH!!! brake controller 104
Karl Townsend wrote:
I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? Karl Karl, hazy recollection of this on earlier Fords. Should be a block on the left fenderwell area with brake lines, 2 in (F & R) and two out (ditto). Little capped boss top center, with a wire sticking out. When the differential gets upset, the sliding valve in the center of that block moves to one end or the other, and turns on the light. IIRC, you have to center that piston, leave a tool in there to hold the piston centered. Bleed the lines, then then reinstall the sensor. Light should be off then, good to go. I have a 1996 F350, but it's not where I can look at it right now. Besides, it has ABS. Not sure your 1993 does. But that may not make a difference WRT to above procedure, as I think the ABS they used was a downstream setup. |
#15
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ARGH!!! brake controller 104
Karl, hazy recollection of this on earlier Fords. Should be a block on the left fenderwell area with brake lines, 2 in (F & R) and two out (ditto). Little capped boss top center, with a wire sticking out. When the differential gets upset, the sliding valve in the center of that block moves to one end or the other, and turns on the light. IIRC, you have to center that piston, leave a tool in there to hold the piston centered. Bleed the lines, then then reinstall the sensor. Light should be off then, good to go. I have a 1996 F350, but it's not where I can look at it right now. Besides, it has ABS. Not sure your 1993 does. But that may not make a difference WRT to above procedure, as I think the ABS they used was a downstream setup. Thanks, I'll look for this. I tried the bleeding the back brakes to balance. No joy. So i took it out on the raod and hit the brakes hard. It stops great, but now I got an ABS warning light too. There's a reason I quit trying to maintain automobiles after the late 70s models. I'm about to just take it in to the shop. Karl |
#16
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ARGH!!! brake controller 104
On Mar 25, 12:15*pm, "Karl Townsend"
wrote: I tried the bleeding the back brakes to balance. No joy. So i took it out on the raod and hit the brakes hard. It stops great, but now I got an ABS warning light too. There's a reason I quit trying to maintain automobiles after the late 70s models. I'm about to just take it in to the shop. Karl Did you pressure-bleed the tee to the sensor yet? jsw |
#17
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ARGH!!! brake controller 104
"Jim Wilkins" wrote in message ... On Mar 25, 12:15 pm, "Karl Townsend" wrote: I tried the bleeding the back brakes to balance. No joy. So i took it out on the raod and hit the brakes hard. It stops great, but now I got an ABS warning light too. There's a reason I quit trying to maintain automobiles after the late 70s models. I'm about to just take it in to the shop. Karl Did you pressure-bleed the tee to the sensor yet? jsw that was step 1. See original post. Karl |
#18
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ARGH!!! brake controller 104
On Wed, 24 Mar 2010 17:32:39 -0500, the infamous "Karl Townsend"
scrawled the following: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? When you bled the rear brakes, the sensor piston went forward and hit the alarm. Then when you bled the fronts, the piston went backwards and triggered the alarm. You need to center the piston so the alarm is not set. In the olden days, I'd quickly open and close the bleeder screw to do that. It was hit or miss. I believe that some sensors come with a centering hole which you can insert a tool, but I got out of the industry back in '86, before a lot of anti-brake hardware and electronics were installed. Consult your local dealer for that info, or buy the service manuals for your particular vehicle, Karl. You'll want it anyway. -- If we attend continually and promptly to the little that we can do, we shall ere long be surprised to find how little remains that we cannot do. -- Samuel Butler |
#19
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ARGH!!! brake controller 104
On Thu, 25 Mar 2010 09:52:01 -0700, Larry Jaques
wrote: On Wed, 24 Mar 2010 17:32:39 -0500, the infamous "Karl Townsend" scrawled the following: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? When you bled the rear brakes, the sensor piston went forward and hit the alarm. Then when you bled the fronts, the piston went backwards and triggered the alarm. You need to center the piston so the alarm is not set. In the olden days, I'd quickly open and close the bleeder screw to do that. It was hit or miss. I believe that some sensors come with a centering hole which you can insert a tool, but I got out of the industry back in '86, before a lot of anti-brake hardware and electronics were installed. Consult your local dealer for that info, or buy the service manuals for your particular vehicle, Karl. You'll want it anyway. I'm confused here. Why do you lot have two axle vehicles with the brakes split front/rear? Why aren't they split diagonally? How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? Expired minds need to know... Mark Rand RTFM |
#20
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ARGH!!! brake controller 104
Mark Rand wrote: On Thu, 25 Mar 2010 09:52:01 -0700, Larry Jaques wrote: On Wed, 24 Mar 2010 17:32:39 -0500, the infamous "Karl Townsend" scrawled the following: I bought a brake controller that uses a sensor in the brake line. Today, I took the brake line apart at the master cylinder, installed the "T" and sensor. Had my better half pump the brakes while I bled. No big deal, I thought. Well, as soon as I started the truck, the brake warning light came on. So I had the better half pump the brakes while I bled a whole can through the front wheels. No joy. I called "the Kid". He said to get a vacuum device from bumper bumper for only $20. Well, it was $50. But I got it and bled a can through each front wheel. No sign of bubbles at all. Note: the sensor is on the front set on the tandem brakes Still no joy. I got a brake warning light. I just got ****ed and called it a day. What do I do tomorrow? When you bled the rear brakes, the sensor piston went forward and hit the alarm. Then when you bled the fronts, the piston went backwards and triggered the alarm. You need to center the piston so the alarm is not set. In the olden days, I'd quickly open and close the bleeder screw to do that. It was hit or miss. I believe that some sensors come with a centering hole which you can insert a tool, but I got out of the industry back in '86, before a lot of anti-brake hardware and electronics were installed. Consult your local dealer for that info, or buy the service manuals for your particular vehicle, Karl. You'll want it anyway. I'm confused here. Why do you lot have two axle vehicles with the brakes split front/rear? Why aren't they split diagonally? How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? Expired minds need to know... They experimented with diagonal split brake systems and found them to be pointless. Having a single brake line to the rear also saves probably $5 per vehicle in manufacturing cost. The frequency of loosing half your braking system while driving at any speed is also incredibly low. Much higher probability that if a line is going to fail, it will do so on the first actuation of the day, likely when you step on the brake initially when releasing the mechanical parking brake. Even then, ruptured brake lines are quite rare and a pinhole leak usually appears and is detected first. |
#21
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ARGH!!! brake controller 104
On Mar 25, 5:49*pm, Mark Rand wrote:
... I'm confused here. Why do you lot have two axle vehicles with the brakes split front/rear? Why aren't they split diagonally? How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? Expired minds need to know... Mark Rand The rear axle load in a pickup varies considerably, the front stays more constant. Braking pressure that slows down the loaded truck moderately can lock up the rears when it's empty. On my 91 only the rear circuit has ABS which senses the average rear wheel speed at the differential ring gear. A diagonal circuit would require two separate controller channels, brake line solenoid valves and individual wheel sensors. It isn't as good as later ones but I've tested it HARD on ice and it works pretty well to keep the truck pointed straight. The previous version was simply a weight switch that detected when the bed was light. I was a test engineer on the 1975 version of ABS for big trucks, the industry's first attempt at mass producing reliable safety-critical electronics. They all failed miserably, so badly that Congress repealed the truck stopping distance requirement. However the young engineers hired for that project (and emissions controls) learned fast. Previously the only electronic item in a car had been the radio. jsw |
#22
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ARGH!!! brake controller 104
On Thu, 25 Mar 2010 21:49:21 +0000, the infamous Mark Rand
scrawled the following: On Thu, 25 Mar 2010 09:52:01 -0700, Larry Jaques wrote: When you bled the rear brakes, the sensor piston went forward and hit the alarm. Then when you bled the fronts, the piston went backwards and triggered the alarm. You need to center the piston so the alarm is not set. I'm confused here. Why do you lot have two axle vehicles with the brakes split front/rear? Why aren't they split diagonally? How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? With _great_ care, sir. Oh, and a bit of prayer and possibly a bit of urine and/or fecal release, depending upon the speed of entry, the degree of brake loss, and your current mental state... Expired minds need to know... Oh, that's right. You Brits did it differently, didn't you? Here in the States, we learn, at a young age, the subtle differences between 2 and 4-wheel drifts. -- Challenges are gifts that force us to search for a new center of gravity. Don't fight them. Just find a different way to stand. -- Oprah Winfrey |
#23
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ARGH!!! brake controller 104
Mark Rand wrote in
: How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? The same way that drivers managed the feat *before* 4-wheel brakes became "normal" in the 1930s. (The Rickenbacker had them in the 1920s but was attacked by "the majors" who claimed that "they are dangerous because they stop too quickly".) BTW, braking should be done *before* entering the corner and is most efficiently accomplished by using the engine... |
#24
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ARGH!!! brake controller 104
On Mar 25, 10:40*pm, Larry Jaques wrote:
... Oh, that's right. You Brits did it differently, didn't you? *Here in the States, we learn, at a young age, the subtle differences between 2 and 4-wheel drifts. One of the differences I learned then was that my Honda Civic could out-corner my friend's MG Midget, mostly because the MG's suspension didn't handle bumps as well and spun out more easily. He was the better (or at least crazier) driver, too. Both vehicles had a very small polar moment of inertia and were almost as tricky as a motorcycle to slide. Later he bought a BMW 2002 that drifted with excellent balance and control. jsw |
#25
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ARGH!!! brake controller 104
On 26 Mar 2010 03:17:16 GMT, the infamous "RAM³"
scrawled the following: Mark Rand wrote in : How do you control a vehicle, braking in a corner, if you've lost either the front or rear anchors? The same way that drivers managed the feat *before* 4-wheel brakes became "normal" in the 1930s. (The Rickenbacker had them in the 1920s but was attacked by "the majors" who claimed that "they are dangerous because they stop too quickly".) BTW, braking should be done *before* entering the corner True! and is most efficiently accomplished by using the engine... Which equates to the rear tires only on older cars, the front tires only on newer, front-wheel-drive vehicles. Luckily, just going around a corner scrubs off speed, so taking your foot off the gas immediately helps, and downshifting helps more. But if you're still going too fast, a light touch on the (broken) brakes can still help a bit. Hopefully, you still have the circuit that -isn't- helping via engine braking, or it may break you loose. In an empty parking lot, it's fun (Dad used to run the autocross and gymkhana circuit.) On the side of a mountain with a 1,500' sheer drop, it's Pampers Time. -- Challenges are gifts that force us to search for a new center of gravity. Don't fight them. Just find a different way to stand. -- Oprah Winfrey |
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