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Profile for Michael J. Edelman > Reviews


Michael J. Edelman's Profile

Customer Reviews: 1991
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Reviews Written by
Michael J. Edelman RSS Feed (Huntington Woods, MI USA)

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Crosman LUM77 Premier Domed Field 10.5g Target Pellets in a Tin (500 Count)
Crosman LUM77 Premier Domed Field 10.5g Target Pellets in a Tin (500 Count)
Offered by Paintball Discounters
Price: $11.81
23 used & new from $6.45

5.0 out of 5 stars The best pellets for high power .177 guns, September 1, 2015
If you've got a spring gun that advertises velocities of 1200fps, or a PCP gun, like the Benjamin Marauder, these are the pellets you want. They'll get velocities down to subsonic levels, which will drastically improve accuracy and down range energy retention. They're also much better at bucking wind than lighter pellets. One tip: Get the cardboard boxes with 1250 pellets rather than the tins with 500- they're a better deal, and you get fewer damaged pellets.

UTG 30mm 10x50 IE Scope, Black
UTG 30mm 10x50 IE Scope, Black
Price: $154.53
6 used & new from $144.99

4.0 out of 5 stars Great low-light target and hunting scope, September 1, 2015
This is a solid, bright, scope with easy to use locking turrets and an easy to manipulate focus knob. The fixed focus means there's no chance of image shift, and the 50mm aperture means you have a 5mm exit pupil, making this a great scope for low light. It even comes with a set of flip up lens covers and a pair of good Weaver/Picattinny mounting rings. I've got mine mounted on a Benjamin Marauder, which has the old style 3/8" dovetail mount, which means I had to supply my own rings; even so, it's a good value.

It does have one fault, and that's that the mil dots are way too tiny. My vision is corrected to 20-20 with glasses, and it's still difficult to see them clearly. If they were a little bit bigger this would be a five-star scope.

AccuShot Premium High Profile 30mm Airgun .22 Rings
AccuShot Premium High Profile 30mm Airgun .22 Rings
Price: $11.08
10 used & new from $9.42

5.0 out of 5 stars Quality rings at a low price., September 1, 2015
Verified Purchase(What's this?)
I purchased these rings in order to use a Leapers/UTG 10x50 scope on a Benjamin Marauder. The scope foes come with rings, but they're for a Weaver/Picatinny type mount, and the Benjamin has good old fashioned 3/8" grooves.

The workmanship is nice, especially given the low price. The machining is clean and precise, and they fit right into the grooves. The scope clamp is secure and perfectly round- it won't distort the tube. A nice piece at a low price.

Crosman Marauder Magazine (Multi-Shot Clip Holds 10 .177 Caliber Pellets)
Crosman Marauder Magazine (Multi-Shot Clip Holds 10 .177 Caliber Pellets)
Price: $14.99
14 used & new from $11.80

5.0 out of 5 stars Flawless function, August 31, 2015
Verified Purchase(What's this?)
Crosman got it right the first time. These magazines work flawlessly and click right into place on the Marauder. One tip: The Crosman instructions leave out a detail regarding loading the magazines. They tell you to lift the cover slightly to get over the "bump" detent and rotate it around. What they don't tell you is that you've got to lift the cover and push it over that bump a second time in order to get that first pellet in and lock the rotor in position. If you don't do that you'll leave an empty slot and have a 9 shooter instead of a 10-shooter.

Air Venturi Foster Female Quick-Disconnect to 1/8 BSPP Male, 5000 PSI
Air Venturi Foster Female Quick-Disconnect to 1/8 BSPP Male, 5000 PSI
Offered by AlexaEnterprise
Price: $25.67
7 used & new from $19.71

5.0 out of 5 stars Trust Steel ;-), August 31, 2015
Verified Purchase(What's this?)
This is the fitting used on Benjamin a Discover and Marauder guns as well as various CO2 propelled paintball guns. It costs more than many less expensive brass fittings as it's made of steel, and in this case it's money well spent. Brass is acceptable for CO2, which has a vapor pressure of around 900psi at around 72 degrees Farenheit. But PCP guns are typically pressurized to 2600 or 3000psi, and air tanks used to charge them go up to 4500psi. At those kinds of pressures you do not want a fitting that will fail.

Incidentally, when attaching this to your Hill or other pump, do NOT use Teflon tape or pipe compound. This connector is designed to work without it, and you'll get a better seal without adding the tape.

Towle Living Gia 20-Piece Flatware Set
Towle Living Gia 20-Piece Flatware Set
Price: $40.22
9 used & new from $38.49

5.0 out of 5 stars Good looking set at a bargain price, August 28, 2015
Verified Purchase(What's this?)
I bought a set of these at Woot to replace my 20-year old flatware, and I liked them so much I started looking for a deal on another set, both to replace potentially damaged pieces and for large dinners. Luckily, I found an even better deal here at Amazon.

A Naturalist Goes Fishing: Casting in Fragile Waters from the Gulf of Mexico to New Zealand's South Island
A Naturalist Goes Fishing: Casting in Fragile Waters from the Gulf of Mexico to New Zealand's South Island
by James McClintock
Edition: Hardcover
Price: $19.25

5.0 out of 5 stars The fragility of nature revealed through the story of ten fish, August 28, 2015
Vine Customer Review of Free Product (What's this?)
There is a saying among a certain type of fisherman (or fisher woman) that I myself subscribe to: The difference between good fishing and great fishing is that great fishing is that in which you actually catch something. This is not a common sentiment among deep-sea anglers or competitive bass anglers or any for whom the size or weight of the catch is the point of the whole exercise, It's rather the kind of sentiment you'll hear expressed by certain fly fishers who, when the fish are really biting, and they've taken near their limit, change their fly to something less like to be taken by a fish.

For this group, catching a fish is not the point of the exercise (although it is a nice bonus). The point is to be in the wilderness and a part of the wilderness. These are the people who will spend time examine the riverbed- is it chalk, mud, sand?- and then perhaps net a few insect larvae to see what the fish are feeding on. They could just as easily toss a hare's ear or wooly bugger out there, but there's something infinitely more pleasing in beating the fish on its own level, getting it to take your imitation of a sulfur nymph when the real thing is right there in the water.

Reading A Naturalist Goes Fishing it's clear that James McClintock falls into this group. As a naturalist he can't help but be aware of his surroundings and of the subtle (and not so subtle) dynamics of the interaction of man and nature when he's fishing. It’s the story of several fishing trips set against the larger background of the environment. In each case, McClintock looks at the local environment- the river, lake, estuary, inlet- and the larger body of water or other feature it’s tied to. He looks at changes in human behavior and environment, using the fish as an indicator of something larger.

Consider the Arctic Triggerfish. When McClintock first encountered them, through a friend doing arctic research, they were plentiful, and the few local and visiting anglers could take all they wanted or needed. But then the decline of the Patagonian Triggerfish, though overfishing, created an incentive for factory fishing ships to go after its Arctic cousin, which was even less able to reproduce fast enough to keep up with the dead of the commercial harvesters. An Arctic species is in decline because of the over harvesting in a fishery thousands of miles away.

Every story in this book is different, but all share this theme, of fish as an indicator of the change in habitat. McClintock is an excellent writer, and not a polemicist. He lets the fish and the people around them tell the story, and for that reason this book is very effective in conveying his concern while still being an excellent read for naturalists and fishermen alike.

Folkmanis Tyrannosaurus Rex Hand Puppet
Folkmanis Tyrannosaurus Rex Hand Puppet
Offered by TheJungleStore
Price: $22.02
27 used & new from $14.00

5.0 out of 5 stars A fine puppet and a good cuddle toy., August 26, 2015
Vine Customer Review of Free Product (What's this?)
Tyrannosaurs are, in general, pretty scary, but this little guy is actually rather charming. He's well made large enough to fit over my big hands, and just scary enough and cute enough to give little kids the kind of fun scare they like without being really terrifying. He's not quite archeologically accurate, but the important features are all there- the tiny arms, massive tail, and huge jaws. He's rigid enough to stand up on his own (see photo) while remaining soft and cuddly. His fabric covering has a coating that gives the impression of scales while still being soft. He's a functional puppet, but he's also a cuddle toy, and the little kids around here have taken quite a shine to him.
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Hill Pump MK4, Up to 4000 PSI
Hill Pump MK4, Up to 4000 PSI
Offered by Big T Products
Price: $289.99
5 used & new from $289.99

5.0 out of 5 stars Probably the best PCP hand pump on the market, August 25, 2015
I was all set to buy a Benjamin pump to go with my new Marauder when I managed to find a factory reconditioned Hill Mk-4 pump for just a little over two hundred dollars. I figured for the small additional cost, I'd get significant improvements in quality, ease of pumping (the Hill has one more stage than the Benjamin pump), better ease of maintenance, and an easily rechargeable water condensing filter. The pump arrived this morning, went together in a jiffy (after an on-line search for instructions!) and is indeed comparatively easy to pump.

The first PCP pump I owned was an original Swedish-made Axsor, purchased for a custom made Adrian Hartley Stalker back in the 1990s. That pump was of high quality, but it was harder to pump than this one, and required periodic disassembly and replacement of the steel balls in the water filter, which tended to rust. Those tiny bits of rust could get into your gun, requiring some major disassembly and cleaning. The Hill uses a much cleaner, and more efficient water condensation system, and one that can be refilled with a lot less disassembly. A fresh packet of beads is only eight dollars from Pyramyd and other distributors, and a complete rebuild kit, with all the o-rings and other fittings needing replacement (something only needed after several years of regular use) is under thirty. Regular lubrication of the o-rings is relatively easy.

I haven't tried every PCP hand pump on the market, so I had to go by what others have written, and the general opinion seems to be that while it may not be perfect in every way, the Hill has the best combination of features of any PCP hand pump out there. My limited experience suggest that this is indeed the case. The Hill has no obvious flaws, it's easy to use, easy to maintain, and should last a very long time.

Tektronix TDS2004C, 70 MHz, 4 Channel, Analog Oscilloscope,  1 GS/s Sampling, Lifetime Warranty
Tektronix TDS2004C, 70 MHz, 4 Channel, Analog Oscilloscope, 1 GS/s Sampling, Lifetime Warranty
Price: $1,840.00
3 used & new from $1,840.00

1 of 1 people found the following review helpful
5.0 out of 5 stars An astounding degree of signal monitoring and analysis capacity at this price level, August 21, 2015
Vine Customer Review of Free Product (What's this?)
I've had this scope on my home bench for about a week now, and I'm still just beginning to discover its capabilities. This relatively tiny box contains more function and capability than any oscilloscope I've ever used.

In the decades since I first learned to use an oscilloscope there's been a revolution in o-scope design. The scopes I learned on were purely analog (the first ones were all vacuum tube!) HPs and B&Ks with preamps coupled directly to the deflection circuits of a CRT. Later, in the research lab I worked in through grad school, we had solid state storage scopes from Tektronix, but they still used CRTs. Today's scopes are really instrumentation amplifiers and A/D converters coupled to computers with LCD displays, and the amount of power and flexibility available in a tiny, relatively inexpensive scope is mind boggling. (The Tektronix under test uses 10x over sampling in the A/D conversion).

The last Tectronix scope on my home bench prior to the arrival of this unit was a unit from the 1970s I bought used back in the early 1990s. It was a two channel scope that probably cost new, in today's dollars, something like $10,000 or more. It had a triggered time base, spaces for two preamps, and that was it. It was also the size of a small window air conditioner, and had its own cart to make it portable. But inside it was an amazing example of high quality construction of the type you usually only see in aerospace components. Where B&K used fiberboard tie strips to connect components and HP used turret boards, Tectronix used silver-plated ceramic strips. Resistors were all metal film units. Soldering was all Mil-spec.

The scope under review, made in China for Tektronix, is part of their least expensive line of o-scopes. It may not have the same level of construction as that 1970s era scope I once owned, but functionally, it's light years beyond that scope. At home, I use oscilloscopes in amateur radio, for servicing and signal monitoring, and in repairing, modifying, and building guitar amplifiers, effects, and stereo components. With the four channel capabilities of this scope I can simultaneous look at (for example) all inputs and outputs of both channels of a stereo preamp. The four traces are color coded to the scope channels, too, so there's no ambiguity as to what you're looking at on the screen.

I'm still studying the manual and experimenting with settings, but among the things I've discovered so far are that the scope will automatically compute things like RMS, peakvalues, duty cycle, phase delay, pulse width, and more. It can add and subtract channels,and do a real time FFT. You can log your data directly to a USB keychain and transfer it to a computer, or print output directly to an attached printer. I can take snapshots of waveforms, and expand them for a closer look. The 70MHz bandwidth means that I can look at RF output from my radio equipment up through 6M. Front panel too confusing? There's a built-in HELP system accessible from the front panel that explains the various controls and options- in ten different languages.

If all the power in the scope itself isn't enough, you can connect it to your PC via the build in USB interface, and Tectronix even supplies a free copy of their special edition of National Instruments' Labview software, an industry standard data logging and control system that in its full version sells for $999 and up. No doubt National Instruments is hoping that institutional and commercial buyers will see the advantage in buying the full version, but for individual users like me, the limited edition is more than enough power. It looks like you can even do things like signal averaging with it, which means this would be a relatively inexpensive way to do evoked potential neurological recordings, with a suitable preamp.

Then there's Tektronix' limited 'lifetime' warranty- certainly a plus for a device this costly. It covers all repairs due to defects up to five years beyond the discontinuance of the product line, for a minus of ten years after purchase, so even after the scope is no longer made Tek will repair or replace it. While it's not a true lifetime warranty it's a lot better than the 90 day or 1 year warranties that come with most electronic gear these days.

Last, the scope comes ready to use, complete with four low capacitance 100MHz probes (and an automatic, one-button probe compensation function). You don't need to anything to put it right to work on your bench. Just plug it in, turn it on, attach the probes and you're ready to go. This is an amazingly powerful piece of equipment, and with the supplied warranty, I know it'll be working for at least a decade.
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