View Full Version : chisel
07-16-2004, 10:52 AM
Does anyone have any information on the existence of a cordless electric chisel? Its' use would be to remove the ac pavement above monumenets that have been covered by who knows. If a cordless chisel does not exist, does anyone have any experience or thoughts on the type of gasoline powered, or electric powered chipping or chiseling tools? The more compact the better. Any information would be greatly appreciated.
Bruce Hall Land Surveyor
5732 Middlecoff Drive
Huntington Beach Ca. 92649, 714 840 4380, 714 840 1180 fax
07-16-2004, 11:40 AM
The problem with cordless tools is that you have two choices: long life or power. The two are mutually exclusive when it comes to power tools. If you have long life on the battery, you don’t have nay power; if you have power, it’s only briefly.
Ryobi used to make a gas powered rotary drill. It was superb! Unfortunately, it was a two-stroke engine. As you know, two-strokes are environmentally unsound. There just aren’t any four-stroke engines that are light enough to pack in through the bush for any distance. I spoke with the National Sales director of Ryobi a few years ago. He talked with me at great length about my needs. When he called back, he said that, unfortunately, their marketing department claimed that there wasn’t enough interest/market to warrant development of a small, light 4 stroke engine.
There are some larger gas powered devices available. The lightest I found weighs in at over 60 pounds without gas or bits. No thanks!
So, We use a Coleman generator with a Bosch demo hammer. I can chisel up a monument under asphalt in 5 minutes or so. I had a pipe driving bit specially made. I can drive pipes straight and true without mushrooming the top…even through asphalt without having to cut a hole first!
For some photos, check out the following link:
07-17-2004, 02:12 PM
thanks Ian. Bruce
07-20-2004, 03:28 PM
I know of a local surveyor that uses a motorized version of pure manpower. If you would like, I'll check to see what he does and let you know.
Yea, if it's not to much trouble, it would be great. Thank you. I have had computor problems or I would have answered sooner. Thank you for your time. Bruce Hall
07-25-2004, 05:25 AM
Just got back from Reno. I'm playing catch for the next day or so, but will check it out for you.
07-27-2004, 01:21 PM
I talked with my friend about what he is using. His is a gasoline model that he does not leave home without. It is a "Cobra" by Atlas Copco from Sweden. He said that they know have a lighter and smaller version. Good luck, I still use a 14 lb. chisel.
07-27-2004, 02:51 PM
The Atlas Copco Pico, a 2 stroke breaker hammer/drill weighing 31.7 lbs, is no longer in production.
The Atlas Copco Cobra 148 and 149 is also a 2 stroke gas powered engine. It weighed in at 52.9 lbs. It is not manufactured any more, either.
The Atlas Copco Pionjär 120 AV is a 2 stroke gas powered drill and breaker. It appears to still be in production. It weighs in at a mere 59.5 lbs. A link to the Atlas Copco page for the Pionjär 120 is at:
60 friggin’ pounds! Woof!
07-28-2004, 05:26 AM
I guess that those overload springs would be in order to haul that beast around. I think I will still keep my chisel. Good luck and let me know if you find a lighter item.
07-28-2004, 06:25 AM
I pulled this off the net. I've worked with these last summer and they work well. Check it out.
"New Bosch Bulldog® Rotary Hammer Offers Extended Brush Life
New Rotary Hammers Last Four Times Longer Than Competition
Mt. Prospect, Ill., September 18, 2003 – Drawing from more than 70 years of hammer manufacturing experience, Bosch Power Tools introduces the 11250VSR, the newest SDS-plus® Rotary Hammer and most durable Bosch Bulldog™ ever.
Bosch prides itself knowing that since it introduced the first hand held electric rotary hammer to the world in 1932, it still produces the world’s number one hammer line with unmatched durability and performance. And with the introduction of the 11250VSR, Bosch carries on this tradition by incorporating its patented rotating brush system. While its primary purpose is to provide users the same level of power in reverse as forward, it also extends the tool’s brush life up to four times longer.
Whether series drilling or setting anchors, mechanical contractors, electricians, plumbers and HVAC professionals will appreciate how the 11250VSR performs on the job. This new model offers a larger 6 AMP Bosch built motor. In rotation-only mode, the unit boasts up to 1,350 RPM, while a twist of the dual mode selector to rotary hammer mode offers up to 6,000 BPM and 1.4 foot-pounds of impact energy with each blow. This means much faster drilling in a more compact rotary hammer design.
Designed with the Bosch-invented industry standard SDS-plus tool holder system, the unit offers tool-free bit changes with automatic bit locking, dust protection and the highest impact energy transfer rate a tool holder system can offer. Bosch also offers a full line of the industry’s leading SDS-plus carbide rotary hammer bits ranging from 5/32-inch to 1-1/8-inches in diameter, as well as thin wall Speed-CoreTM core bits ranging up to 4-inches in diameter.
Some of the other features that make this tool a standard on the jobsite include an integral clutch that helps minimize torque reaction and a 360-degree auxiliary handle for extra control. The tool’s compact ergonomic pistol grip handle includes soft-grip, while its built-in quick-release depth gauge eases the challenge of consistent depth series drilling. Additionally, a variable speed trigger provides more accurate starts, and full power reverse makes removing fasteners or bound bits much easier. And finally, a 13-foot power cord provides added reach and convenience.
Each Bosch 11250VSR 3/4-inch Bulldog SDS-plus Rotary Hammer comes complete with a case, 360-degree auxiliary handle and depth gauge.
About Bosch Power Tools
Bosch Power Tools is a division of the $1 billion, 5,000 employee strong Robert Bosch Tool Corporation, which is the North American branch of the largest power tool manufacturer in the world, Robert Bosch GmbH. Bosch Power Tools provides a diverse line of corded and cordless power tools that withstand the tough rigors of any jobsite and allow professionals to take control of their work. For more information, call toll free 877-BOSCH-99 (877-267-2499) or visit www.boschtools.com."
07-28-2004, 03:18 PM
Originally, we tried the Bosch Bulldog as a tool to chisel up asphalt looking for monuments. It simply did not have the strength necessary for the job. We bought our unit at Home Depot. When I bought it, I made sure I could take it back if it didn't work. They honored their promise and we upgraded to the Bosch 11316EVS. It works wonders!
See the photos in the link in my podt above. That "cookie" of asphalt is about 6 inches thick.
When I started IWLS, I was a "solo operator". I investigated gas-powered tools, battery operated tools and generator dependent tools. I wanted something that would work efficiently and quickly. If I had to dig up monuments in the street, I wanted to do it as fast as possible and with a minimum of physical labor.
The Bosch 11316EVS fit the bill. I've not been disappointed with it.
07-28-2004, 03:29 PM
Ok, I'm sold on it. But how is your truck configured to accommodate the generator?
07-28-2004, 03:33 PM
I have a Toyota Tundra with the 8' bed. I built a "bed box" that's 6' long. I did that on purpose to leave 2' at the back for the generator and demo hammer and...well, anything else that needed to go back there (including a mouth 16 year old if he's not careful).
I'll take a photo and post the link here later...
07-28-2004, 03:42 PM
I like it! It beats the heck out of my little S10.
07-29-2004, 11:38 AM
Ian; a mouthy 16 year old!! Go figure!! Leave the generaror at home and take the child. I think that would temper some of that noise.:-)
I also have been using the generator and renting an electrric chisle from Home Depot (nice way to try out equipment). Works great.
The thing is Ian, judging by the way we both looked in Monterey, we both could stand swining the pickax once in a while! :-0
07-29-2004, 12:06 PM
As they say in France, "Mange moi!"! That's expensive "Table Muscle" in my case!
07-29-2004, 03:29 PM
For what it's worth, the Cobra Combi has replaced the old Cobra, and the former meets EPA specs. Berntsen carries it in their catalog. However, it's still a 60-lb machine.
I've used the older Cobra for installing driven-rod monuments on several projects, and it's not much fun to horse around. I wouldn't consider buying one just for occasional AC cutting, though they're available for rent.
On Ian's recommendation, I bought a Bosch 11316EVS last year. I run it with a 2500-watt Honda generator that weighs just under 100lbs. and fits nicely in the back of my F-150. I don't carry the system around all the time, but when I need it it's definitely appreciated.
you guys have been busy. thanks for the info. I'm checking into these things. Bruce Hall
10-09-2004, 02:58 PM
I purchased a makita cordless rotary hammer, model BHR200. I comes with two batteries. This has been working just fine for me. It has three settings. One for drilling, one for hammer-drilling and another for chipping(chiseling). I use two chisel sizes, 1-1/4 inch wide and 2-1/2 inch. The battery last for about 20 minutes. I then change batteries. (I also have a marine battery under the hood to power my laptop and other charging accessories.)I continue chiseling while the dead battery is charging. It takes about 20 minutes to re-charge. I do not have the room in my pickup for a generator. I have just too much stuff. I also don't like having to deal with gasoline. The unit comes in a nice case, about 24in x18in x 5in. It fits nicely behind the passengers seat of my chevy 2500. Depending how hard the pavement is and how deep I have to go, it usually takes between 5 and 15 minutes to get to the monument.(sometimes it takes longer to get a number off of the tag or washer) The deepest I have had to go these past two months is 0.30'. The unit was about a $800 move. My son said "this is the best thing that you've gotten for the truck in a loooonnnggg time". I have a unit that drills holes for lead and tacks and for chiseling holes. I understand that DeWalt and Bosch also manufacture similar items. Ian Wilson's drill has probably more power. And if one has the room, a generator and the bosch that Ian mentioned will probably get the hole dug quicker. But as I said above, I like what I have. Thank you for your imput. Bruce Hall
Has anyone tried these tools for chiseling asphalt and driving pipes/rebar?
I think there's a couple different brands on the market.
they have the sliding heavy handle, like a motorless jackhammer and are quite effective. Plus, they are environmentally friendly, don't require any electricity or gas, and seem to be pretty rugged.
You also have the added benefit of getting a little exercise using it.
10-10-2004, 09:54 AM
Had a manual jack hammer in my arsenal for over 10 years.
The changeable bits are industry standard. They are heavy and will rip the skin off your hand when you allow the slide momentum to force you hand to fall from the grip and stop immediately with the 3/8" steel collar. The force of the device is greatly improved over the digging bar because the point is placed in the exact location you wish and the slide hammer (and your force) drive the pipe or pierce the asphalt.
Not a one man operation, you will tire and need a break with a rotation schedule dictated by your energy level and endurance factor.
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