Went to JackPoint Jackstands site and found a distributor link that lead me to these FAQ's. Thought it might be good info for those interested.
THE JACKPOINT JACKSTANDS FAQ
What are Jackpoint Jackstands made of?
Material - Jackpoint Jackstands are cast with Almag 535. Almag is a magnesium/aluminum alloy that was chosen for its greater load capacity and elasticity when compared to some less expensive aluminum alloys like 356 T6 or 319.
Cool design, how did you come up with it?
One unique design feature of the Jackpoint Jackstand is the open front. This feature allows the jack stand to fit around floor jacks while the jack is supporting a vehicle. To compensate for this opening, the casting uses varying wall thicknesses to evenly distribute load throughout the jack stand base and eliminate stress hot spots.
Another unique feature is the contoured, interlocking pad and base design. The bottom of the pad is angled to match a parallel angle in the top of the base. These parallel surfaces help align and center the base under the pad as the pad is lowered on to the based. Simultaneously, the same pad and based surfaces are contoured with matching surfaces that lock the pad in place once it is resting on the base. The load on the pad actually makes the pad more secure on the base creating a unified, secure structure to support the vehicle.
Universal Cap or Low Profile Cap, which one should I get?
Also unique to the Jackpoint Jackstands are the caps which are designed to match the jacking location on the specific vehicle. Some vehicle manufacturers use reinforced pinch welds on the unibody chassis to create the factory jacking location. Other manufacturers use a flat surface with a hole or other recessed point in the flat surface as the jacking location. The universal Jackpoint Jackstand caps are designed to accommodate these common, but different jacking configurations. The standard pad is cast with a "V" channel to accept the pinch weld type jacking location common to many vehicles.
The low profile cap has been designed to work on cars that hug the pavement and have a flat jack lift location. The low profile cap is not designed to be used on pinch weld vehicles. The standard cap is also drilled with a hole to accept a removable locating pin that secures vehicles with flat jacking locations to the cap.
How big are these stands?
Jackpoint Jackstands are 12 inches high, 16 inches wide, and 12 inches deep overall. This provides a wide and deep base that is stable and prevents tipping. Though shorter than some jack stands, Jackpoint Jackstands provide greater ground clearance when used in pairs because they support the vehicle at a location that takes advantage of geometry when the front or the back of the vehicle is supported.
How high will these stands get the car off the ground?
Working height or ground clearance of a vehicle placed on Jackpoint Jackstands will vary based on a number of factors. First, the working height will be higher for either end of the vehicle when the jack stands are used in pairs at the front or rear jacking locations of a vehicle than when four stands are used together. Second, working height when working in pairs will be higher on vehicles with shorter wheel bases than longer wheel base vehicles. Third, working height will be higher when the jack stands are used in pairs as the jacking location on the vehicle gets closer to the center of the vehicle. ALWAYS USE THE FACTORY JACKING LOCATION.
For most vehicles, the minimum working height for the vehicle's chassis will be 13 inches using the Standard "V" channel Pad and 12 inches using the Low Profile Pad. That may result in a lesser working height for components that hang from the chassis like exhaust. Some vehicles, like sport utility vehicles or full size sedans may have combined ride heights and suspension travel that will allow the tires to still contact the ground with the Jackpoint Jackstand in place. This is more likely to occur when four jack stands are used than two. It should be noted that industry standard for jack stand usage suggests jack stands be used in pairs, leaving two wheels on the ground. Properly located, Jackpoint Jackstands provide greater working height and maximum stability when used according to industry standard and that is the recommended application for best results.
With two Jackpoint Jackstands in place, working height at the lifted end of the vehicle will range from 12 to 23 inches.
Will this work with my floor jack?
Critical dimensions for floor jack clearance are:
Jack lift pad - 3-5 inches in diameter
Widest part of jack lifting arm - 5.5 inches
Widest part of jack's wheels, roller, or handles at the front of the jack or back 10 inches from the front of the jack - 11.6 inches.
Suggestions for vehicles using the Low Profile Pad:
Locating Pin - the locating pin is used for vehicles with a flat jacking surface as opposed to a pinch weld. The pin is removable and can be replaced if it is damaged during use. The pin is made of 6061 aluminum which is fairly soft. The purpose for selecting this material was to allow the pin to be damaged instead of the cap or vehicle if the pin isn't properly aligned with the hole in the vehicles jacking location. If the pin becomes damaged, it should be replaced.
Cap insulator - Jackpoint Jackstands come with a urethane rubber insulator. The insulator is designed to insulate the vehicle from metal to metal contact between the pad and the vehicle when the stands are in use. However, the insulator also provides greater friction and reduces slippage compared to metal to metal surface contact. It is, therefore, a part of the Jackpoint Jackstand that improves the secure structure for supporting the vehicle. The insulator will wear out with use and may tear when used on certain types of vehicles. This is normal and the insulator should be replaced if it becomes severely worn or damaged.
My brushed stand has some scratches in it, how do I get rid of them?
The brushed finish on the Jackpoint Stand is beautiful but can be prone to scratching. We suggest a foam sandpaper block with a fine grit to help remove surface scratches.
Will this stand work on my SUV/Crossover?
Due to the nature of some suspension designs and vehicle ride heights, we do not suggest the Jackpoint Jackstand be used on a raised vehicle or a vehicle with long suspension travel.
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