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#513887 - 11/01/09 09:37 PM Ladder Bar Question
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Hey guys, I'm having a full fram put in at a shop and I had a ladder bar angle concern. I bought the back half out of a car that was in the shop and I don't think the brackets are correct for how low my car is sitting. There is a pretty good down angle on the bars and I have concerns about the car going straight on the launch. See attachment


Attachments
5581201-020.JPG (230 downloads)



Edited by moparmanjames (11/01/09 09:38 PM)
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72 Plymouth Duster 526 Stroker 10.02 @ 135 69 Roadrunner 69 Barracuda 383 Formula S 69 Power Wagon 94 4x4 Cummins Ram

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#513888 - 11/01/09 11:00 PM Re: Ladder Bar Question [Re: moparmanjames]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 24295
Loc: Bend,OR USA
Quote:

Hey guys, I'm having a full fram put in at a shop and I had a ladder bar angle concern. I bought the back half out of a car that was in the shop and I don't think the brackets are correct for how low my car is sitting. There is a pretty good down angle on the bars and I have concerns about the car going straight on the launch. See attachment


If there is only one set of mounting holes I would not be buying that set up
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#513889 - 11/01/09 11:04 PM Re: Ladder Bar Question [Re: Cab_Burge]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
I already bought it, that pic is as installed in the car, I'm should have them take it off and go with a 4 link eh?

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#513890 - 11/01/09 11:12 PM Re: Ladder Bar Question [Re: moparmanjames]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 24295
Loc: Bend,OR USA
I don't want to rain on your project but I see a lot of required parts of the cage missing, hopefully there not representing this back half picture as all that is needed, are they? Is the rear suspension in and is the car at ride hieght or cloes to it in your picture? I really don't like the way the ladder bar mounts are on the rear end and where they mounted them in relation to the frame rails
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#513891 - 11/01/09 11:30 PM Re: Ladder Bar Question [Re: Cab_Burge]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Quote:

I don't want to rain on your project but I see a lot of required parts of the cage missing, hopefully there not representing this back half picture as all that is needed, are they? Is the rear suspension in and is the car at ride hieght or cloes to it in your picture? I really don't like the way the ladder bar mounts are on the rear end and where they mounted them in relation to the frame rails




It's very close to it in the sig picture. The cage was not complete at the time but is almost complete now. My main question was the angle of the ladder bars. That was the only picture I had available to show of the angle.
The car is still at the shop. Here is a better pic of the cage coming along


Attachments
5581315-P9250011.267173543_std.JPG (148 downloads)

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72 Plymouth Duster 526 Stroker 10.02 @ 135 69 Roadrunner 69 Barracuda 383 Formula S 69 Power Wagon 94 4x4 Cummins Ram

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#513892 - 11/01/09 11:32 PM Re: Ladder Bar Question [Re: moparmanjames]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
another


Attachments
5581316-P9250009.267173445_std.JPG (166 downloads)

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#513893 - 11/01/09 11:51 PM Re: Ladder Bar Question [Re: moparmanjames]
Cab_Burge Offline
Too Many Posts

Registered: 08/23/03
Posts: 24295
Loc: Bend,OR USA
That looks a lot better, see if they will fix it for free before offering to pay for the switch to a four link If they can't insatll a ladder bar correctly how many ways can they mess up a four link installation You don't want the car to hurt you or drive you broke trying to make it go straight and easy to drive, does this shop have a good reputation with a lot of cars out there working really good? If not think about switching for the last changes to the rear suspension, let them learn on someone else
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#513894 - 11/02/09 03:23 AM Re: Ladder Bar Question [Re: moparmanjames]
Quicktree Offline
I Win

Registered: 01/20/03
Posts: 31966
Quote:

Hey guys, I'm having a full fram put in at a shop and I had a ladder bar angle concern. I bought the back half out of a car that was in the shop and I don't think the brackets are correct for how low my car is sitting. There is a pretty good down angle on the bars and I have concerns about the car going straight on the launch. See attachment




that door bar looks high, are they raising the seat? looks like it will be higher than your shoulder?

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#513895 - 11/02/09 07:12 AM Re: Ladder Bar Question [Re: Cab_Burge]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
They have a good reputation with circle track cars, but I think since this back half was a bargain deal they tried to use the parts that were there instead of telling me I had to buy different brackets. They are very knowledgable about the front suspension but they don't seem so much so on the rear of a drag racer.
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#513896 - 11/02/09 07:16 AM Re: Ladder Bar Question [Re: moparmanjames]
bigtimeauto Offline
Trophy Winner

Registered: 06/03/07
Posts: 2646
Loc: Plymouth Meeting, PA
the ladder bar needs to be level to the ground now and adjustment holes up and down for tuning.
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#513897 - 11/02/09 07:19 AM Re: Ladder Bar Question [Re: bigtimeauto]
bigtimeauto Offline
Trophy Winner

Registered: 06/03/07
Posts: 2646
Loc: Plymouth Meeting, PA
One more thing. The way the cage is built it will not cert lower than 8.50
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#513898 - 11/02/09 07:20 AM Re: Ladder Bar Question [Re: Quicktree]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Quote:

Quote:

Hey guys, I'm having a full fram put in at a shop and I had a ladder bar angle concern. I bought the back half out of a car that was in the shop and I don't think the brackets are correct for how low my car is sitting. There is a pretty good down angle on the bars and I have concerns about the car going straight on the launch. See attachment




that door bar looks high, are they raising the seat? looks like it will be higher than your shoulder?




No it's ok, although I might raise it a little for better vision.

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#513899 - 11/02/09 07:22 AM Re: Ladder Bar Question [Re: bigtimeauto]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Quote:

One more thing. The way the cage is built it will not cert lower than 8.50




Yeah they arent finished with the cage but what are you seeing? Every little bit helps, thanks.

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#513900 - 11/02/09 07:28 AM Re: Ladder Bar Question [Re: moparmanjames]
68roadrunner Offline
super stock

Registered: 06/25/09
Posts: 798
Loc: ky
i am no chassis expert, but that will not work.

the ladder bar crossmember dictates the ride height of the car. the bottom ladder bar should be level with the ground in the middle hole of the cross member bracket, then install shock to hold car at that heigth. that is the way it was explained to me when i put them in my roadrunner.

i could be all wrong here, maybe a real chassis guy will chime in.

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#513901 - 11/02/09 07:34 AM Re: Ladder Bar Question [Re: bigtimeauto]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
"the ladder bar needs to be level to the ground now and adjustment holes up and down for tuning."


Yeah that's what I thought too, so seeing as how the car is so low, how would you fix it? I think the axle brackets have to be re-welded and moved inboard and different front brackets made.
Here's a pic and you can barely see it but it's on the right side where the ladder bar mounts to the front.


Attachments
5581597-021.JPG (120 downloads)



Edited by moparmanjames (11/02/09 07:38 AM)
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#513902 - 11/02/09 07:50 AM Re: Ladder Bar Question [Re: moparmanjames]
68roadrunner Offline
super stock

Registered: 06/25/09
Posts: 798
Loc: ky
yep! move the axle brackets inside of the frame rails, build (or buy)a cross member with 5 or 6 holes for adjustment. mounted between frame rails at the proper height so the car will set that low. from the looks of the frame rails there will need some creative work there to get the cross member that high.

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#513903 - 11/02/09 08:46 AM Re: Ladder Bar Question [Re: 68roadrunner]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Quote:

yep! move the axle brackets inside of the frame rails, build (or buy)a cross member with 5 or 6 holes for adjustment. mounted between frame rails at the proper height so the car will set that low. from the looks of the frame rails there will need some creative work there to get the cross member that high.




Yeah the car is lowered so much I'm going to have to get silly with it. Since the axle is higher than the frame, maybe I can use a longer lower bracket on the axle to get it level with the ground.
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72 Plymouth Duster 526 Stroker 10.02 @ 135 69 Roadrunner 69 Barracuda 383 Formula S 69 Power Wagon 94 4x4 Cummins Ram

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#513904 - 11/02/09 09:37 AM Re: Ladder Bar Question [Re: moparmanjames]
68roadrunner Offline
super stock

Registered: 06/25/09
Posts: 798
Loc: ky
have never seen an offset bracket to lower the bars lower on the axle. i would be afraid that would change the leverage on the chassis. if it did, any normal tuning info would be out the window.

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#513905 - 11/02/09 09:56 AM Re: Ladder Bar Question [Re: 68roadrunner]
moparmanjames Offline
mopar addict

Registered: 01/05/05
Posts: 1241
Loc: Las Vegas NV
Quote:

have never seen an offset bracket to lower the bars lower on the axle. i would be afraid that would change the leverage on the chassis. if it did, any normal tuning info would be out the window.




Ok then I guess I'll go the other rout lol, I don't want to start screwing things up worse.

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#513906 - 11/02/09 11:58 AM Re: Ladder Bar Question [Re: moparmanjames]
Chassisman Offline
master

Registered: 09/24/06
Posts: 3579
Loc: Chowchilla,ca
Quote:

Hey guys, I'm having a full fram put in at a shop and I had a ladder bar angle concern. I bought the back half out of a car that was in the shop and I don't think the brackets are correct for how low my car is sitting. There is a pretty good down angle on the bars and I have concerns about the car going straight on the launch. See attachment


UH...that thing will NEVER launch with the ladder bar at that angle. I'm sorry but your going to be battling a HUGE issue.The bottom bar of the ladder bar needs to be as close to parallel to the ground as possible in order for it to work.Where you have it now the car will only spin on the launch.Build whatever it takes to get the bar level. I'll look at the other pics and see what else can or needs to be corrected. I see some Chassisworks tin in there did you purchase it from them?
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