Tying up the left front

[7uptruckracer]

I think the use a formula to determine lateral load but thats from my asphalt background and i haven't been around a rig in a few years

[#75GILLfan]

With as many wins and the resume JustAddDirt has you will have no arguments here.

[dirtdiggerracing]

Is it possible that they are tying LF up to stop it from having an effect on roll center movement ??

[MasterSbilt_Racer]

Is it possible that they are tying LF up to stop it from having an effect on roll center movement ??

If your LF is off the ground, what point is your front pivoting on?

[billetbirdcage]

When do you want it to lift off the ground?
Just because the LR is ON the ground doesn't mean it is carrying a load or providing a steering advantage. Chaining/cabling it up isn't going to change anything except when it leaves the ground. It isn't going to hold the LR DOWN.
If you're looking to keep more load on your LF, chaining it to the chassis isn't going to help.
In other words...this isn't why Davenport is winning races.

Ain't been on for a while: Did you mean LF on the first 2 "LR"s?

[25drtrkr]

Ain't been on for a while: Did you mean LF on the first 2 "LR"s?

What do ya think, bbc? Im with Matt on this one. The only thing I see is the spring stays more loaded, depending in the length of the cable, and wont catch on the spring cup. Is there something I'm missing?

[billetbirdcage]

What do ya think, bbc? Im with Matt on this one. The only thing I see is the spring stays more loaded, depending in the length of the cable, and wont catch on the spring cup. Is there something I'm missing?

I ain't sure what he said so I was asking? He kept typing LR and think he meant LF. I just wasn't sure what he meant as one post sounded one way and another sounded another and I didn't follow him at all.


However increasing/decreasing LF travel, can have a large effect on the car.

[Matt49]

I ain't sure what he said so I was asking? He kept typing LR and think he meant LF. I just wasn't sure what he meant as one post sounded one way and another sounded another and I didn't follow him at all.


However increasing/decreasing LF travel, can have a large effect on the car.

Two things:
1) I did mean LF on the first two LRs
2) My comment about changing the "center of gravity" was better described/illustrated by MBRacer. Roll center changes a bunch when LF comes off the ground so changing when that happens CAN be important. But again, I think there are better ways to do this and I stand by my comments that a pull down rig cannot simulate lateral load transfer.

[dirtdiggerracing]

It's not off the ground most of the time ? I am no expert I am just wanting to hear opinions! !

[Stede Bonnet]

What about the RR? I've heard guys tie down the RR, how much travel is good? Is it same rule, 1 inch before spring unloads? At ride height? Whats good for RR? I know this thread was started about the LF and I apologize for hijacking, but all this chaining/cabling has me thinking about its advantages, its Pro's & Con's. On the surface when I first heard about the Lf I thought it made no sense, but after reflecting on it, talking with Matt49 and considering everything effected I'm curious...

[JustAddDirt]

chain

What about the RR? I've heard guys tie down the RR, how much travel is good? Is it same rule, 1 inch before spring unloads? At ride height? Whats good for RR? I know this thread was started about the LF and I apologize for hijacking, but all this chaining/cabling has me thinking about its advantages, its Pro's & Con's. On the surface when I first heard about the Lf I thought it made no sense, but after reflecting on it, talking with Matt49 and considering everything effected I'm curious...

Chaining the RR has a large difference on a modified with a pull bar. probably would a lift arm on a late model as well considering it s on the right side bell of the rear end. limiting the RR down travel and how much it would plant the RR under throttle. lets you play with more aggressive upper bar angles without the RR lifting up on the bars.

[Stede Bonnet]

Chaining the RR has a large difference on a modified with a pull bar. probably would a lift arm on a late model as well considering it s on the right side bell of the rear end. limiting the RR down travel and how much it would plant the RR under throttle. lets you play with more aggressive upper bar angles without the RR lifting up on the bars.

Oh yeah that makes sense on the bar angles. Does being on the RR spring help initial sidebite at entry? Like does the car land in the corner steadier with RR chained? Whats a good rule of thumb for limiting RR?

[JustAddDirt]

depending n track conditions I start 1" tight off ride height. RR spring still has tension on it. rough tracks you need to loosen it up or take it off.
the slicker the track gets the more I tighten to tight at ride height.

I also feel it keeps the RR spring tensioned, which certainly helps transition on entry. car does not fall till it hits spring (if spring is not tensioned at end of straightaway)
keeps tension on spring for more consistent corner entry

JMO though the seat of the pants feel.
I run a modified so with a pull bar this is a big deal.

[Stede Bonnet]

depending n track conditions I start 1" tight off ride height. RR spring still has tension on it. rough tracks you need to loosen it up or take it off.
the slicker the track gets the more I tighten to tight at ride height.

I also feel it keeps the RR spring tensioned, which certainly helps transition on entry. car does not fall till it hits spring (if spring is not tensioned at end of straightaway)
keeps tension on spring for more consistent corner entry

JMO though the seat of the pants feel.
I run a modified so with a pull bar this is a big deal.

Cool. No that's perfect I was gonna try it on a Rayburn swing arm w/pull-bar, so apples to apples. Thanks.

[JustAddDirt]

Stede
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