-40%
Stewart Lock Resistant Brake System (LBS) Valve Delay / Dampener NASCAR DPI
$ 21.12
- Description
- Size Guide
Description
*************************************************We have a Used
Stewart Lock Resistant Brake System (LBS) Valve Delay / Dampener.
Sells new for 5.00.
Now you can use the same
L
ock Resistant
B
rake
S
ystem winning Winston Cup cars use.
Stewart Brake Development has introduced the hottest thing in street and race car brakes since disc brakes! LBS installs easily in the rear brake line and utilizes a unique dampening valve that acts as a shock absorber to sense and dampen the sharp spike in line pressure when the brakes are applied suddenly. LBS improves the brake performance on any car or light truck, even ones with ABS. ABS was designed for panic stops, not high performance driving. LBS will prevent the application of ABS under all but panic stops making the car much more driver friendly. LBS works much better than a proportioning valve and dramatically improves the brake performance of older cars and light trucks that may or may not have one. LBS also works well with disc brake conversions on street rods and 50s-60s cars. Many people install an adjustable proportioning valve to try and balance the brake system and find they don't do the job.
LBS was originally developed for Winston Cup cars to prevent a loose or oversteer condition under heavy braking with lightening fuel loads and rear tire wear. The same system will give you the same benefits on the street in a panic stop or on a slick road. If the car is loose or oversteering, it means that the rear tires are slipping before the fronts when cornering and/or under heavy braking and can cause the driver to loose control or "spin out". It is preferable to have the front tires slip first (called understeer) when braking because the driver has more control. If you've ever had to slam on the brakes when someone pulled out in front of you in traffic and the rear end came around, you know what we mean!
Stewart LBS assures that the front tires slip first by dampening (not reducing) the pressure to the rear brakes. With LBS, the rear tires will accept nearly twice as much braking force without locking up. Leading Winston Cup teams us LBS to brake harder and drive deeper into the corners at tracks like Martinsville and Watkins Glen and you can use the same technology to stop shorter and safer on the street.
Why LBS works better than other brake balance systems
Passenger cars and trucks require about 70% of their total braking force on the front wheels. This is due to weight transferring to the front of the car under braking. Weight transfer is affected by the center of gravity of the vehicle- a taller vehicle like a pickup has more weight transfer than a Corvette. The rear of the Vette doesn't go as light under braking, so it can use more rear brakes and stop harder.
The front/rear brake bias on a production car is usually achieved by using smaller calipers or wheel cylinders on the rear. Race cars with two master cylinders sometimes use different bore sizes to reduce rear line pressure. Dual master cylinder setups may also use an adjustable balance bar to change the pedal force applied to the front or rear master cylinders to achieve the proper front/rear bias. The bar may also be driver adjustable during the race.
Each of these systems has the same problem, too much front brake and the car doesn't utilize the stopping potential of the rear tires, too little and the rear brakes will lock causing the car to spin.
Why proportioning valves don't work
Proportioning valves don't really prevent brake lock up because they maintain equal front and rear line pressure up to a point called the "knee point" which is controlled by a preset or adjustable spring. After the knee point, rear pressure increases to only 36-57% of the front pressure, depending on how the valve is set. Generally the knee point is higher than the pressure required to lock the rear brakes. If the knee point is adjusted low enough to prevent rear wheel lockup, the rear brakes will be virtually useless. If proportioning valves worked, ABS would never have been developed.
Why LBS does work
LBS doesn't reduce rear brake pressure, it just slightly dampens and delays it. LBS prevents rear brake lock up without degrading rear brake performance and overloading the front brakes.
I am sure that like me, you have a story about a close call you had while driving, where you were nearly creamed by some idiot who made a left turn in front of you, or pulled out of a driveway, or wasn't paying attention as traffic slowed in front of him.
Whatever the circumstances, your reaction was to go into panic-stop mode. You slammed on the brakes, the rear tires locked up, and the back end of your truck decided it wanted to pass the front wheels. If you were quick to react and started counter-steering soon enough, you stood a chance of at least skidding in a straight line, but if you were tardy, you had to hang on for a spinout.
Trucks require about 70 percent of the total braking force to go to the front wheels. When the brakes are applied in a sudden stop, there's a "spike" in the brake line pressure, where too much pressure is momentarily allowed to go to the rear brakes. When that happens, because of the weight transfer to the front of the truck, the rear brake pressure is higher than necessary for sufficient braking.
Stewart Components of High Point, North Carolina, has solved this dilemma by engineering a Lock Resistant Brake System that eliminates the spike by damping and delaying the brake pressure so that excessive pressure to the rear brakes is controlled.
Originally designed for Winston Cup racing, the system has been made available to the public. It's simple to install and improves the brake performance of any truck. I have one of these on my 85 C-10 and can testify that it works great, and it works just as advertised.
The overall valve is small (about 1.75 inch in diameter and 1.25 inch in length), and the ports where the brake lines attach are 1/8 NPT.
You might want this for your race car.
Get a good deal here!
This is a very expensive item
but we will sell the item cheap here on ebay
. Keep in mind all our items are available here at our shop and may be sold off ebay too. All our items sold AS-IS No returns. As with all our items, it may have dings, dents, cracks, scratches and other flaws we may have missed. Look at the pictures and you decide.
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We will combine shipping on these too based on total weight and size of the box or boxes. Ask for combined invoice AFTER you are done buying for the day. Do not pay individually. There is a place to request your total from seller AFTER you are done buying. Local pickup in
Monmouth, Illinois
is always free, no phony pickup fees like some other ebay sellers. READ THIS BEFORE YOU BUY. You must pay for any item you commit to buying. Some eBay sellers use an auction-style format, allowing you to bid on an item. Bidding is fun, but keep in mind that each bid you make is a legally binding contract to buy the item if you win. The same is true for Buy It Now purchases. Not paying for an item after you agree to buy it has negative consequences, explained in EBAY'S unpaid item policy. We do not cancel orders. Please do not buy unless you plan on paying for the item. A buyer can request to cancel a transaction within 1 hour of purchasing the item, even if they've already paid for the item.
Keep in mind
ebay now
charges sellers
a final value fee
on every item for shipping. We now end up only getting around 70% of the item now. I think this is wrong that ebay does this. Ebay makes the rules, not sellers. We have tried to keep shipping costs low but ebay is making that impossible. We want to at least break even on the shipping. Here is a prime example of our bill:
Oct 2 09:09:35
250 New Blue 3/16" Large Head Pop Racin Rivets IMCA UMP Stock Car Modified USMTS
400278716473
Final Value Fee
*
.40
ls1k***** Best Offer price: .00, 2 of 10 items @ .00 (Store)
Oct 2 09:10:56
250 New Blue 3/16" Large Head Pop Racin Rivets IMCA UMP Stock Car Modified USMTS
400278716473
Final Value Fee on Shipping
.20
WE CANNOT COMBINE ON BIG ITEMS LIKE TIRES AND WHEELS AND ON SOME BULKY ITEMS.
You might need this item for your race car, stock car, drag car, off road, IMCA Wissota UMP Nascar modified, late model street stock sportsman, hobby stock, bomber or any other car.
We will be gone every weekend and will not be able to answer questions until late on Sunday nights. NO RESERVE. Check our feedback and other auctions for more great deals.
Keep an eye on our auctions each week for more new and used items. Our inventory changes from week to week and we have many items in huge quantities as well that we re-list almost every week.
Feedback Policy
Please give us the opportunity to fix any problems before you post a negative or neutral feedback. We will resolve any problems immediately.
★★★★★
SALES PLEASE READ
★★★★★
ALL ITEMS SOLD ON A
AS-IS WHERE-IS
BASIS, ITEMS CARRY NO GUARANTEE OR WARRANTY. ALL SALES ARE FINAL. ALL ITEMS ARE LISTED TO THE BEST OF OUR ABILITY. SOMETIMES (RARELY) WE DO MISS A DEFECT. BUYER ASSUMES ANY & ALL LIABILITY FOR ANY ITEMS PURCHASED.
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RETURN POLICY
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ONLY ITEMS ACCEPTABLE FOR RETURN ARE ITEMS THAT HAVE BEEN DAMAGED IN SHIPPING. DAMAGED ITEMS MUST HAVE DAMAGE ITEM FORM FILLED OUT BY SHIPPING COMPANY DELIVERING ITEM (BUYER MUST GET THIS DONE) AT TIME OF DELIVERY. FORM MUST BE RETURNED WITH ITEM FOR FOLLOW UP WITH DELIVERY COMPANY. THIS MUST BE DONE & ITEM RETURNED WITHIN 14 DAYS OF DELIVERY
WE NEVER GET ANY WARRANTY FROM ON ANY OF THE ITEMS WE BUY FROM THE NASCAR TEAMS AND NEITHER DO YOU IF YOU GO TO ANY AUCTION
DO NOT BUY THIS OR ANY ITEM UNLESS YOU AGREE TO THESE TERMS!!!!!!!!!!!!!!!!!
Payment Terms
M0NEY0RDERS PREFERRED or Paypal TO: ROD SMITH 406 NORTH 12TH STREET MONMOUTH, ILLINOIS 61462
Illinois residents must pay applicable City of Monmouth sales tax. Buyers with resale tax numbers must contact us with your info after you win the auction
Shipping Terms
ATTENTION: ALL OF OUR WINNING BUYERS WILL HAVE A SMALL HANDLING FEE
. TRIPS TO AND FROM THE POST OFFICE NOW TAKE UP TO AN HOUR AND SOMETIMES LONGER. WE DO NOT DO THAT MUCH INTERNATIONAL SHIPPING, THE FEES ARE AWFULLY EXPENSIVE ANYWAY. PLEASE LEAVE US A 5 STAR DETAILED SELLER RATING TO HELP KEEP OUR SHIPPING PRICES LOW WHEN YOU LEAVE FEEDBACK. Alaska and Hawaii usually cost about double. International is even more yet. We will ship the most economical way to the Continental US and Parcel Post to Post Office Boxes. Some shipping services have raised prices to ship 15% and more are scheduled to go up also because of higher fuel prices, which continue to go up, increasing costs for us to buy the products and for buyers to get the products. The prices of packaging materials have gone up as well, boxing tape, packing peanuts and bubble wrap has also gone up considerably in the past year.
We always ship the first possible day after payment is sent and sometimes the very same day if the payment gets here before 3:30 pm CST.
We always provide buyers with UPS tracking numbers when we ship by Quantum View Notify.
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Recycling one ton of cardboard saves over 9 cubic yards of landfill space.
The largest single source of waste paper collected for recycling is corrugated boxes.
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EBAYS PHONE APP WILL NOT WORK FOR COMBINED SHIPPING. YOU HAVE TO BE AT A WORKING DESKTOP COMPUTER
EBAYS PHONE APP WILL NOT WORK FOR COMBINED SHIPPING. YOU HAVE TO BE AT A WORKING DESKTOP COMPUTER