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Discussion starter · #61 · (Edited)
Just some suggestions

until I design my own sailor proof stand... of course, the chosen support point is equally important as well... take a look at these. Keep in mind, a single ratchet six ton stand killed my son, and he had two in place plus a tire/wheel assembly under the rotor on the side the stand dropped. Don't save money on safety!!!

Link: Amazon.com: jack stands: Automotive

See items 4, 7, 11, 50, (60, 63 - kinda like the bases on these and distribution of weight but need to see the steel specs), 67 and 103. Personally, I am liking the pin only stands now as human performance does not enter into the equation. You don't pin it, it doesn't work. The double safety ratchet/pin design requires human performance to put the pin in. Without it, what do you have? A ratchet stand.

Also, I was taught as an engineer that you do your calcs and multiply by seven for safety and certainty. Hence, my suggestion you look at high tonnage capacity stands.

It is a life afterall - maybe yours - put a price on it. To have my son back I'd liquidate all I have and move to a tent.

Frederick Klorczyk, Jr.
 
May he Rest In Peace...very sad story to read. It goes to show, don't take things for granted...these stories are never easy to read or hear about. I'm sending you my condolences and you and your family will be in my prayers.

Autoluxe
 
Wow , very sorry for your loss .. Maybe god give your family the strength to carry on and overcome this tragedy !!!
Im in Farmington Hills , your not too far .. So sad to see a young local pass this way .. =( May your Son RIP!!! .. They say God take the good ones young.
btw. working under them jack stands is one my biggest fears gettin under the car .
 
I don't have words. So sorry.
 
Discussion starter · #65 ·
Not a knock to any manufacturer, but a look at the value of life...

I have not found an American made jack or stand yet regardless of price and only minimal reference to code. Maybe Orange County Choppers can machine them out of billet for us and NDT for flaws in material or welds. I saw a post on a NASCAR link where it appeared they had CHINA JUNK too. Kind of like Harbor Fright (as Christian used to laugh at them as) and also without PINS!!! I emailed several serious vendors (you'd likely know them - not Craftsman) as they specified no origin or material. No answers yet. I'll let you know.

Check SnapOn... the best right? Big $$$$$$. CHINA


YA1713, Service Jack, Aluminum, 3 tons

YA512, Jack Stands (2), 12-Ton Capacity (per pair)

Perhaps we all go to lifts as primaries as there are AMERICAN MADE LIFTS built to real code???? Kind of making me think that timber dunnage is the only way to be safe.

Guys, my son came home to me last night after this tragedy. Never let that be you. PLEASE!!!!

Frederick J. Klorczyk, Jr.
 
I'm very sorry to hear about your loss. My condolences go out to you and your family.

I can honestly say the thought of accidentally hitting the lever on the jack stand has never occurred to me and this has been an eye opener.
 
Condolences to you and your family.


We have jackstands at the shop from Gray Automotive Products, seriously beefy and rated to 20k pounds a piece. The only country I can find on the is USA, and the height adjustment is via a large pin, attached to the stand with a chain. Might be worth checking out.

Found a link for some pics and specs, we see to have the 10-TH.
http://www.grayusa.com/support_stand.asp
 
Discussion starter · #69 · (Edited)
Gray Products

Thank you Maslin.

The info you just provided will save many lives if we act upon it. They look like a dedicated, serious company who makes safety their only priority. I plan to call tomorrow and buy what meets my needs. I suspect quite a few others on L4P and other forums will as well.

Dare I say, if I had known of Gray Products and had their jack and stands, Christian would be alive today. Dammit!!! I'm sooo sorry Son :(.

On behalf of the board, my sons and fellow gearheads, I thank you. Their link will be distributed to my email list instantaneously. You cannot put a price on life.

Frederick Klorczyk, Jr.
 
I have no words - as a father myself this is very hard to read yet alone comprehend. My family and I are so sorry for your loss, we on this forum can play with cars etc all day long but it all means nothing when you read things like this!! Sincerest condolences from down under.
 
Thank you Maslin.

The info you just provided will save many lives if we act upon it. They look like a dedicated, serious company who makes safety their only priority. I plan to call tomorrow and buy what meets my needs. I suspect quite a few others on L4P and other forums will as well.

Dare I say, if I had known of Gray Products and had their jack and stands, Christian would be alive today. Dammit!!! I'm sooo sorry Son :(.

On behalf of the board, my sons and fellow gearheads, I thank you. Their link will be distributed to my email list instantaneously. You cannot put a price on life.

Frederick Klorczyk, Jr.
I'm glad to help in any way that I can, I can't even comprehend the situation that you are in.

I've been in the automotive industry for a bit, and have learned the difference between "name brand" and actual quality. I'm always happy to be able to pass on any of the things that I've learned over the years. If you ever have any questions, feel free to pm me, I'll help any way that I can (especially if it's about a Mercedes!)

Again, condolences, and best of luck carrying on the racing season for your son.
 
next to the "post quick reply" button at the bottom of the screen there is a "go advanced" button. Click there and there is an attachment button that looks like a paperclip. Attach files from there.
 
Discussion starter · #77 ·
"Classic Ratchet Jackstand"

Found this in use today. Not everyone is a brain surgeon you know. It dropped with a foot bump to the lever with a 250 lb guy standing on it. So much for "weight locking the ratcheting device in place" as people on some sites have said. Don't believe the "impossible" is "impossible". Look at Japan!!!

Watch out for your fellow carguy / cargal's safety!!!! Please. Life is precious.

Christian, RIP

fjk, jr
 

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Discussion starter · #79 ·
Cur and paste calc from Bimmerforum

M3UOND

I Am Teh Edumacator.

Join Date: Mar 2006
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Quote:
Originally Posted by tomscat1 View Post

With the car's weight (let's say 3000 lbs) on the jackstands, how much force is required to hit the handle at such an angle and cause it to go up 3/4"? Any mechanical engineers here want to take a stab at it? The jack release handle is 4.5" long.

Let's say you have only put the front of the car on jackstands, with the rear wheels on the floor, car in gear, parking brake engaged, rear wheels chocked.

Let's guesstimate those stands would then be holding up 1500 pounds of weight (it would actually be slightly less).

Each stand is responsible for roughly 750 pounds, which is 341kg.

Work = Force x distance; Force=Mass x Acceleration

Work= (341 x 9.8) x .019m

Work would therefore be 63.64 Joules to lift the car 3/4 of one inch. That is the same work required to lift a 20kg dumbbell about a foot.

The leverage equation is force1 x distance1 = force2 x distance2

It's a little dicey to guestimate how long the catch on the jack is; I'll guess half an inch, since most catches seem to be that or shorter.

3342N x .0127 = A x .1143

A=371N of force would be necessary to move the car.

If the catch is only 1/4 of one inch, then it would require 185N.

To compare with lifting a barbell, 185N is the force required to hold up an 18.8Kg barbell, which is 41 pounds.

I don't know about you guys, but I don't find it very hard to curl a 41 lb barbell. Therefore, comparatively speaking, it wouldn't be THAT hard to trip this catch.

By the way, I teach philosophy to juniors in high school, so you might want to check my math.
 
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