Impact and Torque Wrenches

[JOR_EL]

Thanks Patrick,

<font color=blue>Torque wrench, 600 lb-ft

make/model/source/price </font color=blue>

Good report! Now that I've read it, I think I remember seeing a big torquer in the display case at our local HF. Have to go back and look. 9by the way, ...got a good laugh from your "bending" the classic statement by Archimedes(?)... seems there's always a weak-link, in even the most solid theory. /w3tcompact/icons/laugh.gif

Bird, are you listening? was at HF looking at compressors; C-H brand 7hp/60gal/10.3 scfm@90psi-11.8@40, 3 yr. limited warranty,...$397.99

The salesman said it was one of their "loss-leaders", and he thought it would be $50-$100 more elsewhere. (At the local Sears, a comparable model, made by Devil. with only a 1yr. warranty WAS $50 more)

If I decide to go for a stationary 220v, model, would you consider this a good buy?

Thanks, /w3tcompact/icons/smile.gif

Larry

 

[Bird]

Larry, the price sounds very good, but I honestly don't know how good the compressor is or how well it will last. My best guess is that would do just fine for many years.

Bird

 

[patrickg]

Jor_El,

If you like that Archimedes thing I made up and have a minute, maybe you'l like this one:

Given a regular polygon of x sides (at some point this should begin to sound like opening remarks of a calculus lesson dealing with limits) as we vary x, in the limit we can see how the best wheel would be formed. For example: a ten sided figure would thump ten times per rotation, so to improve the wheel we change the number of sides. For example: a three sided wheel would only thump three times per revolution. It is left as an exercise for the student to determine how to build a two or one sided wheel to reduce yet further the number of thumps per revolution.

For those who are a bit foggy in their memory of calculus, the real version A L L W A Y S increases the number of sides so that in the limit as x approaches infinity you get a circle. Just a little (some say very little) math humor that is to a math-theory-lover what fingernails on a blackboard are to a musician. (Hopefully a few folks still remember blackboards - chalkboards)

Do ya spose HF was named that because all their freight comes from a harbor?

By the way, the lugs in prev picture are chromed covers.
The real thing is underneath, 1 5/16 inch torqued to 450 lb-ft

I think the compressor deal sounded OK but can you get repair parts should they be required? If yes go for it, if not then estimate the MTBF and see how that racks up against paying $50 more but having parts availability. Good solidly built compressors can last almost forever but solid as in cast iron is H E A V Y and not suitable for casual movement. I'd hate to save the 13% and regret it a few years later when the value drops to recycle value of the scrap in it if it isn't economical to repair.

Patrick

Patrick

 

[RPM]

Patrick,

Does this look like Excalibur?

3/4'' DRIVE 42'' REACH TORQUE WRENCH

That's a heck of a wrench ... most impressed. My little BX would run and cower in the corner of the garage if you swung that thing anywhere near its nuts.

Patrick

 

[patrickg]

To: Patrick
From: Patrick

Sorry, couldn't help myself. Well du-uh so would I and it wouldn't have to be that close.

Far as I can tell in that picture it sure looks like the same thing. How much these days?

Patrick

 

[patrickg]

Got error messages on last attemp to answer not sure if this is a repeat.

Seems to be the same as Excalibur. Du-uh, I would also get nervous and it wouldn't have to get very close.

When you need someting done at a tire shop and offer to provide the wrench, often they poo poo you until their air tools won't take the lugs off. That is a treat (unspoken told ya so) then the icing on the cake is when you whup out Excalibur and walk up to the (mouth dropped open service advisor/owner/Bozo in charge) with it resting on your shoulder like a battle axe in a Schwartzeneggeer movie.

Patrick

 

[JOR_EL]

PatrickG,

<font color=blue>How much these days?</font color=blue>


The link shows $179.99

Larry

 

[JOR_EL]

Bird/Patrick.

Good point about repair parts availability, ...have no idea, more checking called-for I guess.

PatrickG <font color=blue>It is left as an exercise for the student to determine how to build a two or one sided wheel to reduce yet further the number of thumps per revolution.</font color=blue>

LOL /w3tcompact/icons/laugh.gif reminds me of the old "You can't ever really touch anything" theory, ...(because first your hand must cover half-the-remaining-distance, then half the remaining distance, then half the remaining distance, ad-pukeum, with half of some distance always remaining)

Both problems prove, if anything, that the limits of reality extend beyond the limits of logic! /w3tcompact/icons/wink.gif

Larry

 

[patrickg]

I don't recall exactly but I think that is a bit up from what I paid in National City or was that Chula Vista, its on the catalog. But I have had it for going on 4 yrs and that isn't much more than I think I paid (like about 160-170)

Patrick (Mine has served well)

 

[patrickg]

Half way there... Yup, called Zeno's paradox. It seems that at a party someone introduced a game to play: all the women were lined up against the wall on one side of the room and all the engineers and mathematicians (only men there except waiters) on the other side. Drinks were served all the way round and the men went half way toward the women. More drinks were served and the men went half the remaining distance toward the women. As the third round was being served the mathematicians looked around at each other and left, en mass. The engineers continued to play. When I got back in town I heard about this and asked a mathematician friend why they left. He said it was an obvious demonstration of Zeno's paradox and that however close they might get they would never get to the women. I asked one of my engineer friends his take on the party. Oh, wow man, had a great time, lotsa booze and fraternizing with the women. I repeated how the mathematician said due to Zeno's paradox you could never actually get there. The engineer looked me in the eye and said that is the philosophical rift between mathematicians and engineers. The mathematicians believed they would never arrive at the "perfect solution" and the engineers think they will get "close enough."

Actually Zeno's paradoz was codified prior to Leibnitz and differential calculus where you are endlessly adding up an infinite number of infintesimally small bits and getting actual values. The half way there thing is easily solved in a system where making an infinite numnber of moves is trivial. Take a bucket with a hole in the bottom fill it up and note that the first half takes x seconds to empty. As water pressure due to height of water column goes down rate of leak slows down and each additional unit of water lost takes longer to flow out. Does this imply that the water quits flowing out before the bucket is empty. A capacitor charged through a resistor has a time dependent voltage rise based on e to the -t/RC power where e is Euler's number (base of natural logs) and R is resistance in Ohms and C is capacitance in Farads and t is time in seconds. I hope I recalled that correctly. The voltage in the capacitor rises asmyptotically approaching the applied voltage. When does it get there? Never because of Zeno's paradox (mathematician's view) or after about 5 time constants it is "close enough" (engineer's view). One time constant is the R times C in seconds. After 5 time constants the voltage has risen to within 1/e of the final value. Since my radios work and my old spark ignition air cooled VW dune buggy works, I'm siding with the engineers. My appologies to any mathematicians on board. Where were you cowards when I needed you to explain the finite thickness track thingie to the INNUMERATE NONBELIEVERS?????

Thanks for the loan of the soap box, I'll be better after they figure out the right medication dossage....

Patrick