cody
Pit Crew
Posts: 3
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Post by cody on May 26, 2014 13:53:39 GMT -6
My question is if the rear lowers are adjustable on the housing up and down,is the effect the same as like a three link,( left rear = more angle more drive on the gas) Right rear=less angle tighter on entry) Just trying to understand if it works the same I reasentl put floater under car and it had the adjustable liwer links on it,thanks for replys
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Post by flipflopoo1oo on May 26, 2014 19:52:54 GMT -6
Bar angles do hold true to reactions in movement! On our stock chassis we lean them left and raise or lower the chassis to change steer! Bite is more the uppers location as well as lowers but mostly left to a good rear percent of 60-61 with help of transfer and ign. timing falling while in the turn to hook and be on the floor!
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on May 27, 2014 22:11:19 GMT -6
The rear lowers are more about rear steer than drive, although everyone tries and make it work like a 3 link but its not. Its the stock "W" config and doesnt have the free range of movement like a 3 link. 6 Deg down in back on the left and the right level is a pretty standard setup for these.
Dave
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Post by flipflopoo1oo on May 28, 2014 7:56:27 GMT -6
We never had to move anything from stock location on our limited mod. cars to win! Though we did have to correct some to make them work and be legal after builders mishap in not considering passing tech or a twisted tube moving the rear end to open! If leaning the car left and only rolling to level while in the corner, a bolt to floor measurement ft. and rear on each arm per side (with driver) of 1/4 higher on the bolt (measuring from the level floor up to lt. ft. lower bar) to (3/4-1 1/8 right side ft. lower bar) ( which is more than rear bolt measurement) with only 1/2 inch roll out and two inches of travel at the shocks! One up and one down! Yes I know this runs your rear closed and doesn't steer very much at all and such little roll out is hardly enough to heat a tire, but it served us well! Imagine driving a fork truck at 89 miles per hour and making a turn, or a stock car at 200 mph!!! If the right side lower bar is level and is rolled down instead of leveling when rolled, It closes when rolled! The hiking of only the left to steer ( when right side goes negative from being set level) will close and loose steer in the turn but with that much left hike you may have too much steer! Mother nature is in control in some cases of steer rates and not you! We just let her do her thing while on our way to the front! More roll more steer, top-angle more level- less traction when lifted or bottom bar angles- more up hill ( in the front of the lower bar for more steer and drive) and with the front end settings added neg. caster to make sure the old gal keeps her game on at high speeds! Its a package deal as is any set-up to work correctly but with less work to get through the corners with her ( mother nature) helping to steer! The rt. ft. shock does move 3 inches but most of that is in the upward movement when transfer of weight to the left rear when on the throttle! Thrust angles of traction can be diminished by the lower differential bracket locations as well as the top! It takes two (top and bottom) to have max traction per wheel! A almost level right lower bar gives the upper more angle down for traction control of the left rear! The right side pull point being father away from center of axle is less traction as it holds and doesn't let the twist apply to the top for lifting to add traction by picking up the car in the middle where it is heaviest at! A good hefty rear percent puts your weight centered at this lift point or no traction occurs in the fight of the two pulling in different directions! This only leaves others to only lift with ease needing a great wheel movement of the left to add traction! I prefer the added weight on the left, rear and low to minimize roll, needless steer, loss of traction, minimize weight transfer to the nose in the corner and using it to lessen rear hike instead of adding air down force on the whole car by the angle change! I 'd rather lift the front ( when on the throttle) to get air under the car making it lighter instead of applying more down force and hauling the air load! Just a little food for thought if you are still hungry to win!
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cody
Pit Crew
Posts: 3
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Post by cody on May 29, 2014 5:29:37 GMT -6
Thanks guys for the info!!
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Post by peterdragon on Jun 24, 2014 10:52:21 GMT -6
flipflopoo1oo, i can never understand what your saying. its like talking with peanut butter stuck to the roof of your mouth! please proof read an see if you can help us understand a lil easier! thank you
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Post by flipflopoo1oo on Jun 24, 2014 22:33:47 GMT -6
I do love peanut butter! Yes the rules apply as long as you don't go negative! Then it steers backwards against mother nature! I never run my rear open or left side bars higher to win! This causes drive to over steer the left side and not want to straighten up coming off the turn or allow drivability with out transitions in passing anywhere you please! A well balanced car with traction that can transfer to either rear wheel can steer anytime with the use of extra caster to twist the frame from corner to corner! The ones you can't out motor have to be out driven! We never had much trouble with either! Some were just out smarted by things like gas tank location tightening the car as fuel was burned out leaving more left rear as the track got slicker with the added weight low left and rear! If in 4th place and down to two laps to go, that race was ours on the high side or low or both! Throttle should have little to do with steer in or out! Holding left rear when nosing and letting the right side steer and roll out work along with extra caster will steer you to the front!
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Post by peterdragon on Jun 25, 2014 9:01:39 GMT -6
sooooooooo in between races your resetting the front end?
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Post by flipflopoo1oo on Jun 25, 2014 18:05:59 GMT -6
I hardly ever work on changing any thing at the track unless broken or helping 5 more cars get fixed to a closer tune! Mine wins right out of the shop even if mid season and new car! No hot laps needed to wear the engine in or get a flat or in a wreck! I have set other folks chassis' at the track to perfection and I never use a gauge, not ever, not one in our shop any more, gave it away to help others! My geometry and art classes for 4 years kind of gave me a eye for prospective in angles! I have been tested within a 1/2 a degree! Bump steer changes it all and you would have to float it around in your mind to follow the changes anyway! I do all ours by eye to be correct on the track when rolled with out jacking or blocking! We had no use of scales until moving to 2 mods 2-3 nights a week for 7 years! The switching of new car chassis designs from 3-4-5-7 link gets technical! Our hobby days paid off in learning set-ups before hand to get to fifth arms ,swing arms, Z-links, clamps and indexing floaters! Limited was more of a challenge with limitations of stock parts! We did OK wining 55 of the total 85 races in 4 states in 3 years running! I got to be doing something wrong to break-down so much! That's what I get for hanging out with only one driver too long! It was fun at the time but wouldn't want to do it again! After 35 years, watching Rookies is more fun! Engines are the same as I tune by ear after 4 years of music! Weird majors that I thought would be useless in my world of wrenches! I was wrong there, again! I should have did more English and speech to better express myself here! Bare with me on that one! It may not get any better but trying!
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