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Phil, does the frame rail itself slide on the concrete floor, or just the arms raise and lower without moving the frame rails?
thanks,
Not sure if this is what you're looking for, but after raising and lowering my car several times for detailing, etc., I noticed they had worked themselves toward the rear of the car a couple of inches or so. I now make sure they're positioned correctly before each lift, even when I've not moved the car. I have a smooth concrete floor. Used a set of jack stands on the "short end" before getting under the car to remove the front spoiler and install the grill screens.
Phil, does the frame rail itself slide on the concrete floor, or just the arms raise and lower without moving the frame rails?
thanks,
I've not seen any movement of the base of the lifts. What NextOne has experienced I have too, what he is seeing is as the lift comes up it is in an arc and the car is in Park and or the E brake is set. The car can't move, but the trays ARE moving forward (depending on the direction you have placed them) so the pads CAN slide a bit as it lifts the car until the tires break free from the pavement. I now anticipate this and start with my lifting pads lining up at the front edge of the pucks so after "the slide" occurs (it's not much, maybe 1/2") the rubber blocks are centered the rest of the way. On my daughters Mazda 3 I had to reposition the lift like three times because it kept sliding, the Corvette is minimal. So to answer your question, does the base move, I haven't seen any movement of the lift on the floor.
Phil and NextOne....... thank you for the detailed responses !
Does it matter which end of the lift you have at the back of the car ? I am guessing that the large yellow label would go to the front, and the base of the hydraulic cylinder would be at the back of the car...... but I don't know that it would matter.
Phil and NextOne....... thank you for the detailed responses !
Does it matter which end of the lift you have at the back of the car ? I am guessing that the large yellow label would go to the front, and the base of the hydraulic cylinder would be at the back of the car...... but I don't know that it would matter.
You can do it both directions, but I always set mine with the yellow labels at the front and it lifts and goes forward. The arc is pretty significant, I think (if I recall) the instructions say to allow a foot of forward space from where the car starts to where it ends.
I use my QJ on a Racedeck FreeFlow XLC floor and before that on bare concrete. I have also used it on my asphalt driveway with plywood under the rails. I have never noticed any movement of the base, however the car moves 1 to 1.5 feet in the direction the rails are positioned. Using the RaceDeck flooring makes it very easy to line up the jacks. It also makes sliding the QJ into place easier. I just store my rails under the Corvette and don't move them until they are needed (my C7 is lowered all the way on stock bolts) because the DD can drip onto the QJ. Hanging 70+ lb rails on the wall will be somewhat difficult because they are awkward to lift. I would rig up a pully system if I was going to hang them. When the car was stored for the winter and the front was about 6" from the wall I reversed the rail direction so I had room for the car to pivot.
If you are lifting from a hard surface such as concrete or epoxy, there is risk of scratching the surface.
I recommend strategically adding adhesive backed rubber or felt pads to the underside of the jacks' lower frame.
Otherwise most of the weight is focused on only a few points on each lower frame. Possibly on a weld.
Not needed in the least, the majority of the mass is in the rear, the thing never falls forward. I was under mine with front wheels off or on and it's beyond stable. Had the wife sit in the car too and it's rock solid. There is NOTHING shaky about using a QJ under a C8.
Not needed in the least, the majority of the mass is in the rear, the thing never falls forward. I was under mine with front wheels off or on and it's beyond stable. Had the wife sit in the car too and it's rock solid. There is NOTHING shaky about using a QJ under a C8.
I agree completely that it's rock solid but IMHO it never hurts to be paranoid. The safer the better.
Especially if you are not the only person messing around in the room.
I agree completely that it's rock solid but IMHO it never hurts to be paranoid. The safer the better.
Especially if you are not the only person messing around in the room.
After verifying the weight of the car is on the safety bars (and I always do) I have no concern. I watched the QJ video showing it holding 20,000 pounds of weight, and I have the 7000 series that is rated for thousands more yet, yeah, I'm comfortable being under it.
I received my 5000 EXT on Sunday, via Fed Ex ( yes, Sunday delivery)..... set it up and bled the system. As it was then getting to happy hour time and grilling time, beer and steaks on the grill took priority !!!! I haven't tried lifting the car yet. That's today !
It looks like most of you are still using your Lifting Pucks in addition to the rubber blocks supplied with the QJ. Are both actually necessary, or can I just use the rubber blocks that came with the QJ? It seems sort of redundant, as the purpose of the jacking pucks is to keep you car, and rocker panels off of a lift...... well, the rubber blocks to that as well.
I certainly own a set of aluminum pucks, and just not sure if I'm not understanding something.......
I received my 5000 EXT on Sunday, via Fed Ex ( yes, Sunday delivery)..... set it up and bled the system. As it was then getting to happy hour time and grilling time, beer and steaks on the grill took priority !!!! I haven't tried lifting the car yet. That's today !
It looks like most of you are still using your Lifting Pucks in addition to the rubber blocks supplied with the QJ. Are both actually necessary, or can I just use the rubber blocks that came with the QJ? It seems sort of redundant, as the purpose of the jacking pucks is to keep you car, and rocker panels off of a lift...... well, the rubber blocks to that as well.
I certainly own a set of aluminum pucks, and just not sure if I'm not understanding something.......
thanks,
The purpose of the pucks it to make sure the jack doesn't put any pressure on any of the plastic rocker panel where it wraps under the car. If you crack that, it's going to be an expensive repair, as they're glued on.
Thanks everyone......DSOMrulz, I'm well aware of the purpose of using jacking pucks. Have used them for many years on all of our different vettes for exactly what you described.
I did use my lifting pucks today on my initial lifting. Like Phil, I found it much easier to spot exactly where to line up the rubber blocks to the aluminum lifting pucks and I had plenty of height to work with.
I see what folks mean when they say even with the EXT model, which I bought that I am at the very ends of the tray area. Nice product !!!
Thanks everyone......DSOMrulz, I'm well aware of the purpose of using jacking pucks. Have used them for many years on all of our different vettes for exactly what you described.
Then I guess I don't understand your question. Without the pucks, you run a real risk of damage, so it should be obvious you still need to use them.
Thanks everyone......DSOMrulz, I'm well aware of the purpose of using jacking pucks. Have used them for many years on all of our different vettes for exactly what you described.
I did use my lifting pucks today on my initial lifting. Like Phil, I found it much easier to spot exactly where to line up the rubber blocks to the aluminum lifting pucks and I had plenty of height to work with.
I see what folks mean when they say even with the EXT model, which I bought that I am at the very ends of the tray area. Nice product !!!
What flooring do you have in your garage and how's it holding with the QuikJacks on it? I'm planning on getting a QJ but not sure what I'm going to do regarding flooring.
I have the RaceDeck Free Flow XLC and it works great with the QJ. The pattern makes it easy to keep the QJ aligned and it slides easier. The Free Flow is great if your garage gets wet because the water passes through. We get a lot of snow where I live (also great for washing the car). The non draining tiles would probably be a better choice if your garage stays dry.
