Wimshurst Electrostatic Generator

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Price: $64.95    

Product Feature

• Thick 2.8mm Acrylic Discs for Reduced Wobble
• Replaceable Aluminum Sectors
• Heavy Aluminum Lined Leyden Jar Capacitors
• Spark Length of Up to 3.50"
• High Quality, Affordable Price

Product Description

Lethan Corporations best selling Wimshurst machine just got better. This model now features thicker acrylic discs and a superior long lasting sector adhesive. This is Lethan Corporations classic best-selling economy Wimshurst machine that produces large static electric sparks for a terrific demonstration. No assembly required, simply attach the hand crank, begin cranking, and watch in wonder as the sparks fly. Instruction guide and helpful hints are included with each unit. You can count on the Lethan Corporation Wimshurst machine to provide years of service with proper care. While this Wimshurst machine may look similar to others, it is superior. Why? 1. The Acrylic discs are 25% thicker on average, measuring 2.8mm versus the standard 2.2mm. This reduces wobble, and increases brush contact time. 2. The Lethan Corporation Wimshurst features Leyden jars with a heavy aluminum lining inside and out. Lethan Corp does not use cheaper painted capacitors with oxide coatings like the competition. (refer to product photos) 3. Aluminum sectors on the discs can be replaced when they wear out. Other manufacturers use metallic spray, which wears out quickly, and is not replaceable. 4. Lethan Corporation offers a full line of accessories and replacement parts for this device. Specifications: Overall Height: 13.25" Acrylic Disk Diameter: 9.25" / 235mm Max. Spark Length: 3.50"

Wimshurst Electrostatic Generator Review

Length:: 9:57 Mins

I have added a video showing the device in use and giving educational information on how it works. Every time you here the `popping' noise it makes a clearly visible spark, however, my camera did not pick up all of them. Overall this is a pretty good product, I have used many different wimshurst machines and this one holds its own easily against the more expensive ones. There are a few things missing, but regular people would not really care about those anyway.

Pros:
Inexpensive wimshurst machine (it would cost nearly this much in supplies to make one at home).

Connections for accessories built in, and many accessories are out there.

Fairly simple build for maintenance (I recommend taking pictures of your configuration before servicing so you can put it back together exactly the same).

Fun and simple device that everyone seems to love trying.

Cons:
The leyden jars are permanently connected, on other models you can actually disconnect them. This can be useful for science teachers to show connections with the added capacitance. Without the leyden jars the sparks seen are nearly invisible and therefore not good for anyone not looking to teach it. Many more expensive models have this ability, but even I do not want to pay another $100 for it.

O-rings can dry out and break (mine lasted about a year with no special care), but this happens to all of the wimshursts I have seen.

Taking it apart to service is not terribly difficult, but it is not exactly streamlined either.

At 4:50 I talk about the educational aspects of the device and how it works (in general). I apologise for pronouncing it [V]imshurst when it is actually [W]imshurst, many people use the former thinking it was named after a German scientist when actually it is named for British James Wimshurst. I recommend storing it with the discharge arms touching to prevent charging.

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