Editor's Review: Impact Drivers: Two New Models
by Gary M. Katz
review date: September 1, 2003
If you need to drive lots of screws--anything from lag bolts to drywall screws--get to know an impact driver; it may become your best friend. Although they're smaller and lighter than their cordless-drill cousins, 12v impact drivers deliver nearly double the torque (rotating force) of most 18v cordless drills. Makita has come out with a new model since my previous look at impact drivers (FHB #148), and there have been some significant changes.
Controlling the drive speed of impact drivers is essential for trouble-free performance. Unlike cordless drills, impact drivers don't have clutches. The best way to ease the screw to the desired depth is by feathering the trigger. The Makita 6916D, which sells for about $250, has fine speed control. It is lighter and more compact than its predecessor, the 6914D, yet delivers slightly more speed (2,300 rpm vs. 2,200 rpm) and torque (887 in.-lb. vs. 870 in.-lb.).
The Makita 6916D offers plenty of power and the finer speed control essential for easily driving a lot of screws.
Editor Test Results:
| Overall Rating |
N/A |
| Runout |
N/A |
| Ergonomics/Balance |
N/A |
| Endurance on a Single Charge |
N/A |
| Torque |
887-in.-lb. (manufacturer stated) |
| Chuck/Transmission Quality |
N/A |
Manufacturer Specifications
| Manufacturer |
Makita |
| Manufacturer's Web Site |
www.makita.com
|
| Manufacturer's Phone Number |
800-462-5482 |
| Weight |
3.3 lb. |
| Dimensions |
6-5/8 in. long |
| Chuck Type |
Hex shank |
| Clutch Settings |
N/A |
| Chuck Capacity |
1/4 in. |
| Speed |
0 to 2,300 rpm |
| Volts |
12 |
| Recharge Time |
75 to 90 minutes (depending on battery used) |
| Battery Type |
Ni-MH |
| Accessories |
N/A |