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Originally Posted by kenchan both posts. im not sold on these stands. They stack quite nicely and the base and cap interlock so it can't come off. I think there
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#1 (permalink) |
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They stack quite nicely and the base and cap interlock so it can't come off. I think there are pictures that show that on the 6th page of the rennlist thread.
Not trying to sell anybody on them - it was FYI. I googled them and found a fair amount of info. Certainly you should do your own research and make your own decisions. I was going to buy a flat top conventional stand that cost $100 each and didn't solve the jack location issue. I've always found other places to jack up my cars or put the jack stand, but the factory spot is nice b/c its out of the way of mechanicals and guess work was eliminated. BTW these are rated to ANSI standards at 4000 lbs. |
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Me too. Four hockey pucks or similar cut with a slot accomplishes the same thing on top of a jack stand and is much, much cheaper. Although it looks like a great idea albeit expensive, I can see accidents happening if it's not properly aligned.
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There are several places you can jack up the Z.
The owner's manual will show you two places on the pinch weld with notches designed for the supplied jack. Use that only in an emergency and if you don't have a real floor jack. The service manual will show you a few more places. Here's where you can download the complete service manual. There may be a link for 2010 as well. 2009 370z Service Manual Complete ready to Download! In general, anywhere adjacent to the inside of the pinch weld is a load bearing point. I use these spots to lift the car up one side at a time. Other common areas people use include the rear diff ("pumpkin"), or rear suspension arm (where the springs are perched). Of course, watch out for the sideskirt, exhaust components, etc. while you lift up/lower the car. In theory you can rest the car on the pinch welds, but do not use the pinch weld (seat of jack directly on the pinch weld) to jack the car up. Get yourself some pinch weld adapters for your stands and your jack. The adapters make contact on either side of the weld. A hockey puck with a 1/4" slit cut down the middle works well as a poor man's pinch weld adapter. I use hockey pucks myself. There are several threads that talk about "jacking points" and "jack stands" on the forum if you need more information. If you're not familiar with lifting a car up, be cautious the first couple of times until you familiarize yourself with the underside of the car and the equipment you are using. Please make sure the car is securely placed before you crawl underneath, and NEVER get underneath a vehicle with only a jack supporting it. USE JACK STANDS. For certain DIY's such as an oil change, you can simply place your car up on ramps. If you need ramps, consider Race Ramps. There's a vendor here (Reverse Logic) that sells them. Fred's a good guy and they have ramps and flatstoppers that are quite handy to have. NEW from Race Ramps - Two-Piece, Two-Stage Incline Race Ramps
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I have the tray that slides between the ramps then use a bottle jack to get the car lifted and then use jack stands. Wish I had one of those air pressured bottle jacks. But I only do front and the rear separate not all four corners when on the lift.
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I do like the concept of one-step lift-to-stand action as it solves exactly where to position both the your jack stand and the floor jack. The problem for me is that I could never own just two—I would want four of them! Living in Southern California I am leery of how I lift my vehicles as we get earthquake rollers. These stands look safe enough to leave a vehicle on during a roller.
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The saddle and the stand interlock into one another—there is no slippage. There is a female channel along the bottom of the saddle, and the stand has the male channel, plus the stand's receiving circular hole and the saddle seat together to guide the channel placement.
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^^ nice info and picts. it looks like the thing's going to bend outward and drop the car but i suppose since ol240z's still alive to talk about it, it must be pretty safe.
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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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#12 (permalink) |
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For everyone saying that your jack stands with wood or hockey pucks work fine I think you're missing the point. These are designed so that you can jack the car from the pinch weld and then insert the stand. Thus the open face.
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