Difference between Impact and 'Percussion'

[skids]

So I am considering grabbing a new PDC for large drilling to compliment my CXS when they are released. My question is around the percussion and can it be used in the same manner as I would my current Panasonic Impact drill. I want this drill for several reasons. 1)  I am running a few different battery platforms, 2) I want to take full advantage of Centrotec, and 3) I would love the ability to consolidate Impact and large boring into one drill.

Can anyone tell me if they are able to just flip over to percussion when they need to really drive a screw into some hardwood or does it not act the same as a Impact would in that use case? In other words is Percussion really only designed for drilling into masonry? It's the only way I've every seen it tested or demo'd, and although it would be nice to have a drill that can do that I don't do alot of masonry drilling so it would make the drill much less versatile for me if I can't use percussion as I would a Impact drill.

Thanks!

 

[kevinculle]

They are completely different; impact drivers provide torsional (rotational) impulses which act to drive the fastener clockwise as the screw advances into the material, percussion (hammer drill) provides linear impulses along the axis of the bit that act to micro-shatter the substrate (typically masonry) being drilled substantially speeding up the drilling process compared to a bit that just rotates.

 

[skids]

They are completely different; impact drivers provide torsional (rotational) impulses which act to drive the fastener clockwise as the screw advances into the material, percussion (hammer drill) provides linear impulses along the axis of the bit that act to micro-shatter the substrate (typically masonry) being drilled substantially speeding up the drilling process compared to a bit that just rotates.

Thanks for the reply...Thats what I thought based on what I have read just wanted to be sure before I purchased it. Have to reconsider what I want to do. Right now most if not all my drilling needs are met with my CXS (love it) Panasonic Impact and crappy Ryobi 18v for when things get ugly. If I could have consolidated two drills into one and got the centrotec capabilities throughout it would have been a no brainer for me. Now I have to ponder how it will fit in for me a little more.

 

[peter halle]

Paul Marcel had a good explanation in this video on the now discontinued Ti-15.  Might be worth a look at the beginning of the video.



Peter

 

[tony_sheehan]

OMG again with this?!!!

 

[skids]

OMG again with this?!!!

relax before you blow a gasket.

 

[leakyroof]

They are completely different; impact drivers provide torsional (rotational) impulses which act to drive the fastener clockwise as the screw advances into the material, percussion (hammer drill) provides linear impulses along the axis of the bit that act to micro-shatter the substrate (typically masonry) being drilled substantially speeding up the drilling process compared to a bit that just rotates.

Thanks for the reply...Thats what I thought based on what I have read just wanted to be sure before I purchased it. Have to reconsider what I want to do. Right now most if not all my drilling needs are met with my CXS (love it) Panasonic Impact and crappy Ryobi 18v for when things get ugly. If I could have consolidated two drills into one and got the centrotec capabilities throughout it would have been a no brainer for me. Now I have to ponder how it will fit in for me a little more.

. I have Impacts and I have a PDC. I would rather drive fasteners in with an Impact, but have done it time to time with my PDC on smaller screws when I only brought my PDC to a work site.
Still haven't tried large lag bolts like one poster here did with their PDC making kids outdoor playground stuff.

 

[tony_sheehan]

"relax before you blow a gasket"

No gasket, just sayin' (should've put a on the end!)

 

[Brice Burrell]

I've always had a hard time understanding the confusion on this topic.  As Skids mentioned we already went over this for him (I believe several times).  I really like Paul's videos, but he way over complicates the explanation. 

I guess I should at least add something to this thread useful, so here it is.  Everything you need to know is in the name. 

Impact driver, drives fasteners.

Hammer drill, drills holes.

 

[rst]

That being said Brice, Milwaukee now sell drills that work in the inpact driver...not neccessary for wood but great working steel and aluminum.  [smile]

 

[skids]

I've always had a hard time understanding the confusion on this topic.  As Skids mentioned we already went over this for him (I believe several times).  I really like Paul's videos, but he way over complicates the explanation. 

I guess I should at least add something to this thread useful, so here it is.  Everything you need to know is in the name. 

Impact driver, drives fasteners.

Hammer drill, drills holes.

It's been a while for me on the forum, but to answer your question. The confusion for me is was inthe term "percussion". I understand the difference between hammer and Impact for the most part. I was just making absolutely certain (before I spent $630) that percussion wasn't some new fangled drill feature that would allow me to consolidate some of my current drills into one.

 

[skids]

"relax before you blow a gasket"

No gasket, just sayin' (should've put a on the end!)

I probably should have done a search, truth is I didn't see much when I looked for the PDC in the search. But I am rusty on the FOG.