NEW LONGACRE BUMP STEER GAUGE,DIAL INDICATOR,79000

Description

You are bidding on a
Brand New Longacre Bump Steer Gauge (Longacre Part #79005).
This replaces Longacre's part number 79000.
Features:
This simplified design uses a single precision dial indicator to tell you directly the exact amount of bump steer steer within .001"
No need to subtract one dial reading from another - no chance for error
Most accurate, easiest, and quickest way to measure your critical bump steer
Extended height design - check bump steer at ride height or on stands
Single dial indicator design is much easier to use - you read the bump directly
Includes:
Wheel plate with mounting holes for most 5 bolt patterns (5 x 4 1/2", 5 x 4 3/4", & 5 x 5") and most Wide 5 (can be modified for other wheel patterns if needed)
Adjustable stand
Precision dial indicator
You can view and download the instructions
here
.
Longacre Bump Steer Gauge Instructions
INTRODUCTION
Bump steer is the toe-in or toe-out of the front wheels as the suspension goes from normal ride height through full bump (suspension system moves up) to full droop (suspension system moves down). Measurement is usually limited to 3" up and 3" down from ride height. It is specified either by a graph or measurements at 1", 2", and 3".
Bump steer affects handling much as setting toe-in does. All cars have a certain designed-in pattern of bump steer. Check with your chassis builder for his normal pattern. If you have a factory chassis, you'll probably want to try to minimize bump steer as a starting place.
Due to normal manufacturing tolerances, the actual bump steer can vary from the designed pattern and should be checked on a new car and occasionally during the life of the car to see if it has changed. Many professional racers even use bump steer as a chassis tuning tool. Again, check with your chassis builder.
Checking Bump Steer
First you must determine the position of the suspension system at ride height. This is a starting point as this is where normal toe-in is set. Later you are going to put the car on a ride height block and remove the front wheel and spring.
There are two easy ways to determine the front suspension position
Measure the length of the shock absorber.
Measure the angle of the upper A frame.
Choose one and take the measurement with the car at ride height. Also measure the frame-to-ground clearance at this time.
Make a ride height block from wood (or anything solid) the same as frame-to-ground to place under the frame when you take the front wheel off.
Put the ride height block under the frame and remove the wheel and spring. Also disconnect the sway bar. Place a hydraulic (or floor) jack under the A frame and raise the suspension to ride height by measuring the shock length or A frame angle as before.
Bolt the aluminum plate to the hub. If necessary you can drill other holes for your particular car. (After you're done, keep the bolts with the set for future use.) Rotate the plate so that the small level shows horizontal.
Lean the bump steer gauge (tubular frame with dial indicator) against the plate at a slight angle (approx. 15º) so that the upper tube is parallel with the plate and the dial indicator tip and roller bearing contact the plate. Loosen the knurled knobs adjust the height so the dial indicator tip and roller bearing are next to 0" on the plate scale. Rotate the dial on the dial indicator to 0".
Using your hydraulic jack move the suspension system until the dial indicator is at the 1" mark. Note which direction the dial indicator moves to see if the wheel toes in or out. The reading you get on the dial indicator is the actual amount of bump steer. It's that simple. Record this and go onto to 2" and 3". If you want to make a more detailed measurement, you can take readings every 1/4" or 1/2" and plot a graph. Note: When you are taking measurements the steering must not move. If necessary, lock the steering in place. Also, the hub and plate must not rotate. If it does, turn it back to horizontal using the small level.
Now go back to 0" and take similar measurements as the suspension systems moves down. Repeat this procedure on the other side of the car. Keep the readings as part of your records.
To adjust bump steer refer to your setup sheet or manual, or there are several good books on the market that describe how to make adjustments. Because suspensions vary widely, it is not practical for us to go into detail on actual adjustment procedures.
When you are done with the adjustments, re-check as before.
Check out our Ebay store for many other Longacre parts, as well as other performance parts.
Shipping:
There is no faster shipping on Ebay.  If you pay for the item by 5:00 Eastern, Monday-Friday, we will ship it the same day.  If it's after 5:00 EST, we will ship it the next business day.  If you pay for the item on the weekend, we will ship it out Monday.  No delays here.  We want you to have the parts as bad as you do.
Shipping cost will be .99 for UPS Ground Service within the continental United States.  If you buy 2 or more of our auctions, shipping will certainly be combined to save you money.  We will be glad to ship internationally.  Just send me a message for an international shipping quote.
Accepted payment methods:
We accept Paypal. If buyer doesn’t have a Paypal account, he or she can pay with Visa, Mastercard, or Discover through seller’s merchant account.
After purchasing, pay instantly with your credit card through PayPal!
Powered by
eBay Turbo Lister
The free listing tool. List your items fast and easy and manage your active items.