HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Stock and Super Stock Tech

Reply
 
Thread Tools Display Modes
Old 09-28-2017, 09:45 AM   #1
Ed Wright
Veteran Member
 
Ed Wright's Avatar
 
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 390 Times in 170 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by joespanova View Post
No , everything's loose and oiled ( WD-40 ).
If you are not using floating spring perches, it is binding. WD40 is not a good lube. I ran ladder bars with leaf springs back in the '70s. On 10.5" tires. Hooked better when I went to mono leafs, then still better with the floaters.
__________________
Ed Wright 4156 SS/JA
Ed Wright is offline   Reply With Quote
Old 09-28-2017, 10:59 AM   #2
joespanova
Senior Member
 
Join Date: Jun 2011
Location: Ga.
Posts: 521
Likes: 7
Liked 13 Times in 11 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by Ed Wright View Post
If you are not using floating spring perches, it is binding. WD40 is not a good lube. I ran ladder bars with leaf springs back in the '70s. On 10.5" tires. Hooked better when I went to mono leafs, then still better with the floaters.
Ed , of course I'm using floaters.......and they are not binding.
I'll move the bars up a hole and see what happens............for some reason I always assumed going down makes it more wheel stand prone......
joespanova is offline   Reply With Quote
Old 09-28-2017, 11:23 AM   #3
Ed Wright
Veteran Member
 
Ed Wright's Avatar
 
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 390 Times in 170 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by joespanova View Post
Ed , of course I'm using floaters.......and they are not binding.
I'll move the bars up a hole and see what happens............for some reason I always assumed going down makes it more wheel stand prone......
Use some good moly grease to lube everything. Mine was a C/Super Modified '69 Camaro. 302" on 10.5" tires. Making it wheel stand was never an issue. Don't think I ever moved the bars up or down.
__________________
Ed Wright 4156 SS/JA
Ed Wright is offline   Reply With Quote
Old 09-28-2017, 02:13 PM   #4
Mike Pearson
VIP Member
 
Mike Pearson's Avatar
 
Join Date: Mar 2007
Posts: 2,443
Likes: 613
Liked 1,915 Times in 574 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by joespanova View Post
Ed , of course I'm using floaters.......and they are not binding.
I'll move the bars up a hole and see what happens............for some reason I always assumed going down makes it more wheel stand prone......
Just don't move the bars past level with the bottom of the rocker panel. Mine has a down angle of 1-2 degrees. Horsepower and good chassis is what will make the car get up in the front. Moving the bar down will make it hit the tire harder.
__________________
Mike Pearson 2485 SS
Mike Pearson is offline   Reply With Quote
Old 09-28-2017, 09:02 PM   #5
joespanova
Senior Member
 
Join Date: Jun 2011
Location: Ga.
Posts: 521
Likes: 7
Liked 13 Times in 11 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by Mike Pearson View Post
Just don't move the bars past level with the bottom of the rocker panel. Mine has a down angle of 1-2 degrees. Horsepower and good chassis is what will make the car get up in the front. Moving the bar down will make it hit the tire harder.
I have had the car VERY wheel stand prone in the past..........to the point of damaging stuff.
Since I lowered the ride height in the rear it wont..........so to recover ( some ) I either move the bars or lower the housing on the perches.....I dont want to raise the azz end up a hole on the perches , sooo.........past level?
I'm already slightly down a degree or so............so I either go down more or up 1 hole as has been suggested.
The consequence of breaking parallel , at least from going DOWN some is already noted. The result of going UP is not.
joespanova is offline   Reply With Quote
Old 09-29-2017, 08:53 AM   #6
Mike Pearson
VIP Member
 
Mike Pearson's Avatar
 
Join Date: Mar 2007
Posts: 2,443
Likes: 613
Liked 1,915 Times in 574 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by joespanova View Post
I have had the car VERY wheel stand prone in the past..........to the point of damaging stuff.
Since I lowered the ride height in the rear it wont..........so to recover ( some ) I either move the bars or lower the housing on the perches.....I dont want to raise the azz end up a hole on the perches , sooo.........past level?
I'm already slightly down a degree or so............so I either go down more or up 1 hole as has been suggested.
The consequence of breaking parallel , at least from going DOWN some is already noted. The result of going UP is not.
I can tell you from experience with my car that if the bottom of the ladder bar is running on an upward angle in comparison to the frame of the car it will not hook the tires. A slight downward angle has always been better on my car. 3150 Lbs. and it will 60 ft in the 1.28 - 1.29 range when the air is good. This is with a PG.
__________________
Mike Pearson 2485 SS
Mike Pearson is offline   Reply With Quote
Old 09-29-2017, 10:59 AM   #7
joespanova
Senior Member
 
Join Date: Jun 2011
Location: Ga.
Posts: 521
Likes: 7
Liked 13 Times in 11 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by Mike Pearson View Post
I can tell you from experience with my car that if the bottom of the ladder bar is running on an upward angle in comparison to the frame of the car it will not hook the tires. A slight downward angle has always been better on my car. 3150 Lbs. and it will 60 ft in the 1.28 - 1.29 range when the air is good. This is with a PG.
I'm NOT DOUBTING YOU.....I'm just sayin'.
joespanova is offline   Reply With Quote
Old 09-29-2017, 01:48 PM   #8
Tom Broome
Member
 
Join Date: Sep 2009
Posts: 144
Likes: 80
Liked 88 Times in 43 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by joespanova View Post
I have had the car VERY wheel stand prone in the past..........to the point of damaging stuff.
Since I lowered the ride height in the rear it wont..........so to recover ( some ) I either move the bars or lower the housing on the perches.....I dont want to raise the azz end up a hole on the perches , sooo.........past level?
I'm already slightly down a degree or so............so I either go down more or up 1 hole as has been suggested.
The consequence of breaking parallel , at least from going DOWN some is already noted. The result of going UP is not.
I'll try to keep this short.
You lowered your car and it doesn't wheelstand as much. When the center of gravity is lower in relation to the rear axle the car will not transfer weight as easily.
Did you lower the front at the same time?
I expect the solution can be found in the front suspension. How much travel? How much stored energy? What is your front spring rate?

I'm assuming your car is still a stick. Have you made any clutch changes? How hard does it hit the tires on the starting line? Do the tires slip or dead hook? Does the rear suspension squat, or lift?

Raising or lowering the center of rotation (ladder bar eye) primarily affects the reaction of force applied to the rear tires.
Lengthening the center of rotation affects the point of lift in relation to the longitudinal center of gravity, not an option for your ladder bars.
Tom Broome is offline   Reply With Quote
Old 09-29-2017, 02:08 PM   #9
Mark Yacavone
Veteran Member
 
Mark Yacavone's Avatar
 
Join Date: Mar 2002
Location: Miles From Nowhere
Posts: 7,807
Likes: 2,897
Liked 5,109 Times in 1,947 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by Tom Broome View Post
I'll try to keep this short.
You lowered your car and it doesn't wheelstand as much. When the center of gravity is lower in relation to the rear axle the car will not transfer weight as easily.
Did you lower the front at the same time?
I expect the solution can be found in the front suspension. How much travel? How much stored energy? What is your front spring rate?

I'm assuming your car is still a stick. Have you made any clutch changes? How hard does it hit the tires on the starting line? Do the tires slip or dead hook? Does the rear suspension squat, or lift?

Raising or lowering the center of rotation (ladder bar eye) primarily affects the reaction of force applied to the rear tires.
Lengthening the center of rotation affects the point of lift in relation to the longitudinal center of gravity, not an option for your ladder bars.
Very good post.Hope to see more.
__________________
"We are lucky we don't get as much Government as we pay for." Will Rogers
Mark Yacavone is offline   Reply With Quote
Old 09-29-2017, 06:09 PM   #10
joespanova
Senior Member
 
Join Date: Jun 2011
Location: Ga.
Posts: 521
Likes: 7
Liked 13 Times in 11 Posts
Default Re: Ladder bar leaf spring guys

Quote:
Originally Posted by Tom Broome View Post
I'll try to keep this short.
You lowered your car and it doesn't wheelstand as much. When the center of gravity is lower in relation to the rear axle the car will not transfer weight as easily.
Did you lower the front at the same time?
I expect the solution can be found in the front suspension. How much travel? How much stored energy? What is your front spring rate?

I'm assuming your car is still a stick. Have you made any clutch changes? How hard does it hit the tires on the starting line? Do the tires slip or dead hook? Does the rear suspension squat, or lift?

Raising or lowering the center of rotation (ladder bar eye) primarily affects the reaction of force applied to the rear tires.
Lengthening the center of rotation affects the point of lift in relation to the longitudinal center of gravity, not an option for your ladder bars.
Nothing has changed except the ride height in the rear..........IIRC.
Mark seems to know you................?
joespanova is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:59 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.