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Author Topic:   help with old multi-leaf
c&s44
Member
posted July 07, 2002 08:07 AM
We need to get our old multi-lesf car to corner better. We scaled it to all recomdations,run a 529 gear,406moter on a 3/8ths high bank track. Have tried differant springs and front shock combos. Stager set 1/2 inch too loose set at 2 1/2 a little better but it seems like that is way too much and is loose on straights. Have sliders and made the left one solid and it helped a little untill the end of race when we got iow on fuel.All help is appreciated.


HIGH VOLTAGE
Member
posted July 25, 2002 09:50 PM
CS good luck not much help on here for multileafs.We run a multileaf and i've tryed to get some help.Our car is going in good and good through the middle of the corner having proplem coming out loose and back end hanging out off corners.Hooking up not that good yet but I'm darn determined to make it work.What can i do to help you?We've changed ours up for this weekend think it will help.We've got 56% left side 59% rear and 54% cross gonna try that in the heat.Lr sping is 175 rr is 175 with bottom spring taken out.Got 275 lbs lr in the car.Hope this helps let me know maybe we can work together.


mudslinger12
Member
posted July 25, 2002 10:42 PM
hi guys, we have an older multi-leaf car too, you are right about finding help, in fact we are the only car at our track that has one...lol, anyways we have just this week come up with some ideas and some good info out of an old book we have, we are gonna do some chaning this next week, i will try to keep you all informed if it helps at all...our problem is car is pushing bad in the corners...way to stiff, if you guys have any ideas on this let me know...after doing all the research i have, i really like the logic behind the leafs if i can just figure it all out, and i am determined to do so...lol


Greggie
Member
posted July 25, 2002 11:39 PM
My name is greg and I'm a leaf spring-a-holic...LOL My car is a Leaf/Mono car. I bumped up my ride height to help what you guys are talking about. I'm up around 7 1/2- 8". I use about the same percentages, but I don't much get over 53% cross.

Me

mekomod51
Member
posted July 26, 2002 03:41 AM
Got some ideas from a chasis builder in TN on some things there doing to old multileafs and having good luck with them he says.Hes making them what he calls a 2 link.They are taking and mounting a j bar and putting coil spings with coil sliders.Then cutting the rear spings except for the bottom sping just behind the lowering block.We are gonna try ours tommorow night(26th) like it is if no luck gonna give this a try if you want more details on this holler at me .


tdevans93
Member
posted July 27, 2002 09:20 AM
Hey Voltage,
How did the Leaf / J-bar combo work. I was always told that this will bind the car severly because the j-bar gives the car one roll center, and the leafs give the car a totally opposite roll center.


CUSTOMPERFORMANCE
Member
posted July 27, 2002 09:26 AM
93 what he talking about is cutting the leafs in half right behind the pads on the rearend and what this does is make it like a 2 link. since you no longer have a full leaf you need a panhard bar of some kind to control lateral movement also put the coil springs on top about 175-200lb to start. use a pullbar or a lift arm if not already running one.


HIGH VOLTAGE
Member
posted July 27, 2002 11:58 AM
Custom we have not done this yet.When talking about installing a pullbar are you talking about like a 3 link pullbar on top?We thought about using a 18 to 20 inch j bar what do you think.I've seen you posts on here before you do seem to know what what your talking about any help would be appreciated.Appreciate everyones help lets see if we can't get these leafs hooked uppppp.


CUSTOMPERFORMANCE
Member
posted July 28, 2002 06:32 AM
That length of j bar be ok and yes a pullbar like you would run on top of a 3 link setup around a 6-700 lb spring or run one of those new urethane rubber ones with the medium -soft rubbers.


HIGH VOLTAGE
Member
posted July 28, 2002 05:04 PM
Well ran last night.In the heat car would not take a set in the middle of the corners and still spinning coming out.(This is still old setup).Ran %'s just like i showed earlier.For the feature we tryed something totally different.Took 5 turns out of rf and added 5 to the lf car was totally different.It set up great going in and coming out.We ended up finishing 6th in the feature not 1st but better than last week.Gonna try working off of rr instead of lr one more week before we try anything different.Will put back on scales this week to see what changes this made to the car.


HEAVY DUTY
Member
posted July 28, 2002 09:45 PM
C&S 44, LEAFS ARE STILL A GOOD SETUP.ANY ONE WHO TELLS YOU DIFFERENT HASNT RUN THEM BEFORE OR HAD THEM RIGHT.FIRST THING YOU SAID WAS THAT 1/2 INCH STAGGER MADE YOU TOO LOOSE BUT THAT MORE STAGGER MADE YOU BETTER BUT LOOSE ON STRAIGHTAWAY.THAT PROBABLY MEANS THE CAR IS TOO TIGHT.IF YOU FORCE A TIGHT CAR TO TURN IT BECOMES LOOSE.YOU SHOULD CHECK YOUR REAR TO SEE IF IT IS SQUARE.I NEVER LIKED A SOFT RR LEAF,THEY KILLED THE SIDEBITE.YOU SHOULD ANALYZE THE PROBLEMS FROM WHERE THEY START.DRIVE THE CAR AS FAST AS YOU CAN WITHOUT USING THE BRAKES,AND SEE IF THE CAR IS LOOSE OR TIGHT ENTERING AND THROUGH THE MIDDLE.FORGET ABOUT WHEELSPIN AND FIX THE ENTRY AND MIDDLE FIRST.MOST PEOPLE WORRY TOO MUCH ABOUT FORWARD BITE AND FORGET ABOUT CORNER SPEED.MOMENTUM(CORNER SPEED)CREATES FORWARD BITE.LEAFS TAKE MORE FRONT SPRING AS A RULE.YOU NEED TO HAVE HEAVY ENOUGH SPRINGS ON THE REAR.MOST GUYS RUN THE LEAFS TOO SOFT.MOST MODS NEED AT LEAST THE AFCO 20231M OR HOWE 31,WHICH IS A 175 IN LANDRUM.THEY ARE GOOD FOR WHEEL WEIGHTS IN THE 600 TO 750 RANGE.DONT RUN A LIFT OR PULL BAR,LET THE LEAFS DO THE JOB.ONLY USE A DAMPER WHEN WHEELHOP OR LOOSE ENTRY OCCURS.GOOD LUCK