C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

I Like These Stands!

Thread Tools
 
Search this Thread
 
Old Jan 12, 2007 | 12:29 PM
  #21  
Mark_Milner's Avatar
Mark_Milner
Safety Car
10 Year Member
 
Joined: Feb 2006
Posts: 4,367
Likes: 59
From: FL
Default

Originally Posted by Z-man
The reason for these is that the car is loaded in the same way that it would be if the wheels were on, so you can see how the suspension is affected. Jack stands on the frame or elsewhere, allow the suspension to unload so you can't get a true picture of what's happening. Good if you are working on things like this, but probably pretty rarely needed. In car shows, they let you see what's behind the wheel. Also, they are much stronger than they appear.
I'm sure they are, but for actual work on the car, where someone is under it, I would weld a perpendicular reinforcement plate from as close to the hub center as possible to the bottom on each leg. I would also use an "outrigger" both inside and outside to prevent tipping.

The problem is not at rest, because at that time, they are extremely strong. The problem is if they were to ever tip (too many leaning on the car, trying to remove a part, changing engines, not being level, etc.), the force that causes the stand to bend INCREASES as it bends. That is, when it first starts, the force bending may only be a hundred pounds. Halfway, it may be 300 pounds. But as it gets most of the way, it is closer to 900 lbs. So the danger is, once they start bending, your only hope is to get out of the way FAST!

Many garage floors are not really level. They often have a slope to drain water. It may not be noticable, but rather than have the 900 lbs (3600 lb car/4 wheels) of force in line with the support, it is slightly offset, so there is a bending moment on the support arm. This puts the support in a moment (stress) the entire time until you remove it. Repeated use can then set up fractures (bend, unbend, bend, unbend) and they could fail without you ever knowing they were about to.

Your thin jackstands may look weaker, but by having three dimensions and fair sized ones, they can prevent the bending moments and thus serve a long time without setting up for failure. Also, by not being rigidly attached to the car, the car cannot create a bending moment on the jack stand.

The jack stand problems usually come from overloading the stands or having them on unlevel ground.
Reply
Old Jan 12, 2007 | 12:37 PM
  #22  
stingr69's Avatar
stingr69
Le Mans Master
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2004
Posts: 7,499
Likes: 1,508
From: Little Rock AR
Default

Originally Posted by Rowdy Rat
Mark,

The car is a 1969 L-78 Camaro... Burnished brown with a black interior. It had a lot of work done at the same restoration shop that is doing my '69 Camaro. This car cleaned house at the fall 2006 Chevy/Vettefest from what I recall. Very cool car!







For their intended purpose (indoor judged show or display), they are very practical and allow the detail work on the chassis to be easily observed. For actual service work, I would agree with your comments.

As far as safety... That display stand is made from 1/2" heat treated steel. I would be willing to bet that it is as strong if not stronger than the stamped steel jack stands that most people are comfortable using to work on their car.

Regards,
Thanks for the update. I probably should have noticed the wheels in the picture as a dead giveaway that it was not a Z/28.

Those display stands look like a crafty solution for shows and the car looks amazing too.

-Mark.
Reply
Old Jan 12, 2007 | 03:37 PM
  #23  
Rowdy Rat's Avatar
Rowdy Rat
Safety Car
Veteran: Marine Corps
25 Year Member
Liked
Community Favorite
 
Joined: Dec 1999
Posts: 3,604
Likes: 839
From: PA
Default

Originally Posted by stingr69
Thanks for the update. I probably should have noticed the wheels in the picture as a dead giveaway that it was not a Z/28.
Mark,

Easy thing to miss... The hubcap doesn't really show much detail in the photo. I was impressed with your ability to come up with the rear axle ratio. Obviously a real Camaro guy!

Those display stands look like a crafty solution for shows and the car looks amazing too.
The stands are strictly for shows and not for actual service work... Just a way to show off the chassis without unloading the suspension.

This Camaro car is absolutely gorgeous (as are all the cars that come out of this shop) and photos really don't do it justice. They deal mostly with Camaros, but have also done a fair share of Novas and Chevelles... They have even restored a FoMoCo product every now and then. They always have something cool in the shop and I try to stop in any time I get the chance.

Regards,

Stan Falenski
Reply
Old Jan 12, 2007 | 06:40 PM
  #24  
zzyzx's Avatar
zzyzx
Drifting
20 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Jan 2003
Posts: 1,345
Likes: 0
From: I got you a puppy!
Default

Originally Posted by zzyzx
Cinder-blocks work great too!
Don't you guys know sarcasm when you hear it? I was implying that those would be as dangerous as cinder blocks if you climbed under the car and started wrenching on something
Reply
Old Jan 12, 2007 | 06:43 PM
  #25  
whoodiestyle's Avatar
whoodiestyle
Racer
 
Joined: Oct 2006
Posts: 318
Likes: 0
From: Cape Coral FL
Default

Originally Posted by 84rzv500r
It's an easy job for my CNC plasma cutter but there is a lot of waste...
who said you have to cut out the centers? more strength
Reply
Old Jan 13, 2007 | 06:49 PM
  #26  
Z-man's Avatar
Z-man
Race Director
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
Default

Originally Posted by Mark_Milner

A concrete block is ONLY strong in compression. This means the holes must be up and down, not sideways.

A concrete block is ONLY strong in distributed loads, not point loads. Your hammer is a point load. So is a steel frame resting on it.
I think cinder blocks should only be used in the front driveway, or on the lawn...
Reply
Old Jan 14, 2007 | 10:26 AM
  #27  
ghoastrider1's Avatar
ghoastrider1
Le Mans Master
15 Year Member
 
Joined: May 2006
Posts: 7,708
Likes: 266
From: indy indiana
Default

great idea for show car only.
Reply




All times are GMT -4. The time now is 04:50 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE