MEGADORA IMPACTA No.980(Ph No.2 x 100) | PRODUCTS INFORMATION | VESSEL CO., INC
full range of information on product groups ranging from tightening tools such as drivers, bit sockets and air tools to anti-static products in the factory
Even then, wouldn't you just insert a power bit - or maybe something longer - into a bit-socket and use the manual impact?... maybe if the screw was down where only a regular scree driver could reach
Honda rotors, it works
I'm leery of drivers that only list #2 Phillips when using on JIS screws it just never seems to work out well.My initial thought too. I may have to pick these up.
Basically this is just a manual impact driver with a fixed bit. It seems to me it would have limited utility over a multi-bit manual driver (for lack of a better description), but I suppose if you only use one or two sizes often, it might serve a purpose.Kinda neat, but I don’t see a lot of utility in it in 2021 with the power and availability of cordless tools we have at our disposal. Maybe some specialized applications that I’m not thinking of.
I really kind of agree with you there. That's what I would do. But maybe if you had a limited amount of things you wanted to carry. Your screw driver can double as a impact tool. Maybe you carry one of those ratchets that's made to also be a hammer. I guess I'm sort of grasping here.Even then, wouldn't you just insert a power bit - or maybe something longer - into a bit-socket and use the manual impact?
Not saying a dedicated driver wouldn't be nice. It's just that there are probably limited circumstances where it is needed over a manual impact driver with bits.
I completely agree. I have often wished they would make cordless impact drivers that have a function that would apply forward force to the tool at the same time it turns. That would be great for situations that you currently use a a manual impact driver for.Basically this is just a manual impact driver with a fixed bit. It seems to me it would have limited utility over a multi-bit manual driver (for lack of a better description), but I suppose if you only use one or two sizes often, it might serve a purpose.
However, a manual impact driver vs. a power impact driver is really comparing two different tools. With a manual impact driver, you are hammering the screwdriver into the bit at the same time you are making it turn. It's especially useful for Phillips-head fasteners which are designed to cam out under high torque. Basically it helps make sure the screwdriver doesn't slip, especially when trying to turn an already damaged fastener.
A power impact driver can be helpful for stuck screws too - certainly better than just trying to turn them with a regular screwdriver. However, it doesn't push the bit into the fastener and therefore isn't quite as good when dealing with stuck Phillips screws or fasteners with damaged heads (think of when you get the angle wrong and spin the tip in a deck screw, for example).
Also, with a manual impact driver, the hammer force works in concert with the twisting force. I.e. if you hit it hard, the screwdriver is driven into the screw-head hard AND applies more force to turn it. With a power impact tool you can squeeze the trigger to apply more twisting force without also applying more pressure to keep the tip in the screw head.
Manual impact driver is famously good for brake rotor and carburetor screws - plus screws that are rusted in place.


I have both P2 #2JIS and P3..I'm leery of drivers that only list #2 Phillips when using on JIS screws it just never seems to work out well.
The Vessel Impacta is JIS compatible. The Craftsman set was made by Vessel and was just a rebrand, with the handle molding being identical, though the color was specific to Craftsman. This Crescent and GW versions have different handles, but the descriptions of the mechanism are the same as Vessel's. I haven't seen either in person, so I couldn't say for certain if either is made by Vessel.I'm leery of drivers that only list #2 Phillips when using on JIS screws it just never seems to work out well.
No. The shaft rotates 12 degrees counterclockwise when you strike it.Wouldn't this technically be a manual hammer driver? Impact drivers impact on the rotational axis, hammer drives impact on longitudinally.
Basically this is just a manual impact driver with a fixed bit. It seems to me it would have limited utility over a multi-bit manual driver (for lack of a better description), but I suppose if you only use one or two sizes often, it might serve a purpose.
However, a manual impact driver vs. a power impact driver is really comparing two different tools. With a manual impact driver, you are hammering the screwdriver into the bit at the same time you are making it turn. It's especially useful for Phillips-head fasteners which are designed to cam out under high torque. Basically it helps make sure the screwdriver doesn't slip, especially when trying to turn an already damaged fastener.
A power impact driver can be helpful for stuck screws too - certainly better than just trying to turn them with a regular screwdriver. However, it doesn't push the bit into the fastener and therefore isn't quite as good when dealing with stuck Phillips screws or fasteners with damaged heads (think of when you get the angle wrong and spin the tip in a deck screw, for example).
Also, with a manual impact driver, the hammer force works in concert with the twisting force. I.e. if you hit it hard, the screwdriver is driven into the screw-head hard AND applies more force to turn it. With a power impact tool you can squeeze the trigger to apply more twisting force without also applying more pressure to keep the tip in the screw head.
Manual impact driver is famously good for brake rotor and carburetor screws - plus screws that are rusted in place.
I think you guys hit the nail on the head. I have the old school black oxide manual impact driver and I use it once in a blue moon, but my power tools have largely replaced that and a majority of my air tools in the garage. I could see it being nice if you dealt with a lot of the same fasteners on a daily basis and wanted to trim down your kit some. But the driver tip is going to be destroyed with regular use I think.I really kind of agree with you there. That's what I would do. But maybe if you had a limited amount of things you wanted to carry. Your screw driver can double as a impact tool. Maybe you carry one of those ratchets that's made to also be a hammer. I guess I'm sort of grasping here.
Ultimately, I concerned it won't take long for the tip of that screw driver to get chewed up. So, you try to remove a screw,damage the head, and now your thinking you can try the impact tool to loosen it and get it out and replace it with a fresh screw. But your impact tool is the same one that buggered up the head to begin with. I wouldn't feel particularly optimistic about that.
I use mine for Honda brake rotors and a few others, probably 4 or 5 times a week and it's 3 years old and going strong.I think you guys hit the nail on the head. I have the old school black oxide manual impact driver and I use it once in a blue moon, but my power tools have largely replaced that and a majority of my air tools in the garage. I could see it being nice if you dealt with a lot of the same fasteners on a daily basis and wanted to trim down your kit some. But the driver tip is going to be destroyed with regular use I think.
Thought about dedicating a manual impact driver and Torx bit for that purpose?I use mine for Honda brake rotors and a few others, probably 4 or 5 times a week and it's 3 years old and going strong.
I wish they made a torx one for GM rotors I'd buy that in a heart beat.
The screw driver type is just so simple and easy to grab from the rack for GM's I grab a impact socket and the gun but it does wear the socket out faster.Thought about dedicating a manual impact driver and Torx bit for that purpose?
