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It's a fine line with the bottle jacks since the lift is so small in comparison to their height.
Two sets of requirements will demand a different size bottle jack.
One use is changing a flat tire. Seems everytime I get a bottle jack that has enough lift to lift a tire enough to change it....it's too long to fit under the axle when the tire is flat.
So....in order for a bottle jack to be useful for changing a tire....it has to be short enough to fit under the axle when the tire is flat....and have enough lift in order for you to put a new inflated tire on.
It's a different set of requirements when you just want to raise an already inflated tire to stuff branches etc. under it for traction. For that scenario you need a jack with enough lift in order to be of use so you can stuff branches under a tire....and it only has to be short enough to fit under the axle with a fully inlated tire. Of course, that tire could be burried in mud.
This whole issue is what makes the high-lift jack so useful. They can go from a very short initial height to REALLY tall.
Two sets of requirements will demand a different size bottle jack.
One use is changing a flat tire. Seems everytime I get a bottle jack that has enough lift to lift a tire enough to change it....it's too long to fit under the axle when the tire is flat.
So....in order for a bottle jack to be useful for changing a tire....it has to be short enough to fit under the axle when the tire is flat....and have enough lift in order for you to put a new inflated tire on.
It's a different set of requirements when you just want to raise an already inflated tire to stuff branches etc. under it for traction. For that scenario you need a jack with enough lift in order to be of use so you can stuff branches under a tire....and it only has to be short enough to fit under the axle with a fully inlated tire. Of course, that tire could be burried in mud.
This whole issue is what makes the high-lift jack so useful. They can go from a very short initial height to REALLY tall.