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post #1 of 23 (permalink) Old 12-28-2012, 03:10 PM Thread Starter
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Default Peak HP

I'm looking at new routers. Sears Craftsman has one that says 2.5 peak HP. Is this really 2.5 HP? Should I be looking at continuous HP?

Is this a good router? (Variable speed 10,000 - 25,000 rpm)
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post #2 of 23 (permalink) Old 12-28-2012, 04:32 PM
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Glenn, manufacturers can play with the hp rating so a better way to understand a routers power is the amps it draws. (for North America; Watts for the rest of the world)

A router that draws 12 amps will handle most jobs. A router rated for 15 amps is the maximum for North America. Sears sells many different models so you need the exact model number for an accurate opinion from members who own one.

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post #3 of 23 (permalink) Old 12-28-2012, 04:48 PM
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Hi
Yes it is 2.5 HP it's a 14amp router,I have 4 of them and I like them. it comes with lights and a built in lift kit...plus many more great items.
Craftsman 2.5-hp Fixed/Plunge Router : Power Up With Deals at Sears

ReViews below
http://www.sears.com/shc/s/p_10153_1...0P#reviewsWrap

==

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Originally Posted by dgcutter View Post
I'm looking at new routers. Sears Craftsman has one that says 2.5 peak HP. Is this really 2.5 HP? Should I be looking at continuous HP?

Is this a good router? (Variable speed 10,000 - 25,000 rpm)



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post #4 of 23 (permalink) Old 12-28-2012, 05:00 PM
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Quote:
Originally Posted by bobj3 View Post
Hi
Yes it is 2.5 HP it's a 14amp router,I have 4 of them and I like them. it comes with lights and a built in lift kit...plus many more great items.
Craftsman 2.5-hp Fixed/Plunge Router : Power Up With Deals at Sears

ReViews below
Craftsman 2.5-hp Fixed/Plunge Router : Power Up With Deals at Sears

==
Built in lift kit? Is that the micro adjust that an allen wrench can reach through the insert plate like the 2hp?

Looks like my next router.

“It’s not a mistake, it’s a design feature”
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post #5 of 23 (permalink) Old 12-28-2012, 05:08 PM
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Hi

Yes and no ,it's true on the fix base but the plunge base no micro so to speak but both can be adjust from the top of the router table with the Allen hex key.

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Built in lift kit? Is that the micro adjust that an allen wrench can reach through the insert plate like the 2hp?

Looks like my next router.



"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
http://www.routerforums.com/search.php?searchid=944097


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post #6 of 23 (permalink) Old 12-28-2012, 09:47 PM
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Glenn, Mike is correct. There is no way that any router has the actual HP they claim to have. One HP = 746 watts and that is the output watts, not the input watts. Since the standard 15 amp North American circuit is about 1800 watts then the most a router can be is about 2.4HP on the input side. Since routers are only about 65 to 75% efficient that means that you can only have about 1.75 HP on the output side where the work actually gets done.

However, since all the manufacturers are lying about their horsepower more or less equally, you can still use their claims to compare them to each other. As Mike said, the best way, in more absolute terms, to compare one router to another is by using the input power. An even better method is to compare output watts. That is how much power you actually have to work with.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #7 of 23 (permalink) Old 12-29-2012, 08:08 AM
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Tool Power Output is in the specification list of cordless drills. Too bad routers couldn't have that in their specs.

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post #8 of 23 (permalink) Old 12-29-2012, 08:33 AM
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It is interesting that in this day of green this an that, conservation and all, that we woodworkers seem to operate on the Tim Taylor method. Motors are generally most efficient when operating near the design output. Does it really make since to run a tank router when a trim router will do the job? It just increases the operating cost! I am guilty of this... my 3 1/4HP(advertised anyway) sets in my router table all the time, even if only rounding over the edge of a workpiece! it would be cheaper to do that with my trim router.

Just a different take on HP. Might have to change some of my work habits!

I have found that hand tools are the best choice when I want to make mistakes at a slower rate of speed.

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post #9 of 23 (permalink) Old 12-29-2012, 11:56 AM
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I'm a fan of Bosch 1617, but there are many routers in this class that are about equal. The Bosch has the top side adjustment with an Alan wrench as well. Interesting HP discussion though. Thanks for the good question.
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post #10 of 23 (permalink) Old 12-29-2012, 01:49 PM
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Mike hit the nail on the head. go with amp rating. 11 amps are good enough to run any dense wood through without losing much power. I am also looking at a Craftsman router kit for my table. The price is nice, and reviews are good on those kits.
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