Spinning Metal - A Guide to Rotary Mower Blades

!: Spinning Metal - A Guide to Rotary Mower Blades

To Mulch or Not to Mulch? That is not the only question you should be asking yourself when you are shopping for rotary style mower blades. In order to get the correct blade and type of blade for your mower, there are several pieces of data that you need.

• The manufacturer of the mower - is the mower by Exmark, Hustler Turf, Snapper, Cub Cadet, Toro, John Deere, etc.?
• The model of the mower - if it is an Exmark mower, is it a Vantage, Lazer Z; if a Hustler, is it a Zeon or Sport, or another model. Each manufacturer has more than one type.
• What is the size of the deck? The deck size is usually listed in inches such as 42". Decks vary in size from 21" to 72". The size determines the number of blades needed. Some mowers take only one blade where others take three.
• What is the diameter of the center hole? Some center holes range in size, others are star shaped. Certain blades have 3 holes. Note what kind you have and the diameter.
• What was the length of the blade before use. Blades can shrink in size due to use. The metal actually begins to flake off on some less expensive blades. Knowing the length of an unused blade can help you to locate the right blade faster

Once you know the answer to those questions, you can tackle what type of blade to get. Mulching and non-mulching are really the only two main types of blades. Mulching blades cut the grass off sharply and into small bits that it deposits back onto the lawn. Most people use these when they are not bagging the remains but plan to leave them on as mulch. Lift blades tear at the grass as they spin and lift the clippings into a grass catcher or shoots them back on the lawn through a side-shooter.

Beyond the question of mulching or non-mulching, there are different types of blades within those two categories.

Lift Blades

• Low Lift - Low lift blades cut closer to the ground and do not create high suction. This is the choice of those who use side-shooters for clippings or are mowing where the ground is very sandy or loose. Not as much dust is created using low lift blades. Dry and short grasses are perfect for a low lift blade.
• Medium/Standard Lift - This is the choice of most consumers and works wonders on grass with broad leaves. Often, the mowers come with standard lift blades from the manufacturer. Standard lift blades create medium vacuum to pull the clippings up and into the bag.
• High Lift - High lift blades create a lot of vacuum for clippings. This is the best choice for thinner types of grass such as rye or bluegrass.
• Super High Lift - When using a bagging system, super high lift blades use the most force and vacuum to push clippings into the bag.
• Notched blades - A notched blade is simply a lift type of blade with a notch in it to create a higher lift.
Mulching Blades
• Standard Mulching - These blades have three or more notched and tilted teeth cut into the edge of the blade. They snip off grass and cut it into several smaller clippings to be used as mulch on the lawn.
• Gator Blades - Gators are like standard mulching blades but the way they are designed, they redirect the air flow to keep the clippings directly in front of the blade edge. Because of this, the clippings are cut finer. This helps reduce bagging or raking and promotes faster decomposition.
• Ninja Blades - Designed specifically for Snapper mowers, this unique blade is like having two blades in one. Unlike other mower blades where the end terminates in a single blade, the Ninja splits into two like an elongated X.

The last consideration for buying blades is the thickness. Light duty blades are thinner than heavy duty ones and do not last as long. If you are a professional landscaper or have five to six acres of grass to mow, it is recommended that you purchase the heavy duty blades. They cost a little more, but they will last longer.

When you have decided which blade is right for you, contact your dealer with the information and they will be able to match the right blade to your needs.

Happy mowing!

Spinning Metal - A Guide to Rotary Mower Blades

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Bush Hog Mowing with John Deere 3720 Cab Tractor

!: Bush Hog Mowing with John Deere 3720 Cab Tractor

This is a video my oldest son shot in September 2008 while doing some bush hog mowing for a customer of his. The tractor is a John Deere 3720 cab tractor with vertical exhaust, pulling a John Deere 6ft Rotary Mower through an open field that has grown over 6-7ft high in some areas.

Bush Hog Mowing with John Deere 3720 Cab Tractor

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Poulan Pro PB30 30-Inch 11-1/2 HP Briggs and Stratton Rear Engine Riding Lawn Mower

!: Buyers Poulan Pro PB30 30-Inch 11-1/2 HP Briggs and Stratton Rear Engine Riding Lawn Mower compare

Brand : Poulan | Rate : | Price : $1,055.99
Post Date : Dec 13, 2011 23:36:41 | Usually ships in 24 hours

Poulan Pro 30-Inch 11-1/2 HP Briggs Variable Speed (PB30) features a 30-Inch mower deck, 30-Inch turning radius, a fold flat - foam padded seat for added comfort and support while mowing. Also features stamped steel front axle, 16-Inch rear tires and 13-Inch front tires. Features a 1 gallon fuel capacity, bumper, cup holder, step thru frame.

• Heavy duty ergonomic design for comfort and durability
• Single blade, deep draw deck
• Requires less storage space
• Better visibility for maneuvering in tight spaces
• Non-CARB Compliant/Not For Sale In California

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The Workings of a Clock & Watch

!: The Workings of a Clock & Watch

A watchwork or clockwork is made up of a set of gears connected together. The gears in a watch or clock are called wheels, and there are usually five of them. The first of the series is the largest. Each succeeding one is usually smaller and turns faster. The wheels are powered by a spring known as the mainspring, which is coiled inside a drum attached to the largest wheel.

When the stiff mainspring is wound up tightly and released, it starts to unwind again. As it unwinds, it moves the largest wheel. The large wheel turns the center wheels, the center one turns the third wheel, and the third one turns the fourth. If the spring were allowed to unwind at its own speed, the clock or watch, would not keep time because the speed of the turning wheels could not be controlled. The fifth wheel is part of the escapement, and it fixes the rate at which all them turn.

The escapement in a watch and some clocks is made up of a balance wheel, a hairspring, and an escape wheel. The hairspring, a tiny elastic strip inside the balance, links the balance wheel with the rest of the watch. When the balance one begins to move, it pulls against the hairspring, which immediately pulls back and changes the direction of the movement of the balance wheel. As the balance wheel regularly turns back and forth, two fingerlike prongs hit the notched edges, of the escape wheel.

Each time the escape wheel begins to move freely, it is stopped by one of the prongs controlled by the balance and held briefly. One tooth of the escape wheel has time to move before the other prong stops the escape wheel again. The regular back-and-forth movement of the balance wheel keeps the escape wheel turning one tooth at a time. The tick we hear in a watch is from the escape wheel each time a tooth escapes. If the watch gains or loses time, it is because the balance wheel is too fast or too slow.

In a pendulum clock the escapement is regulated by a pendulum in place of the balance wheel. The escape wheel is attached to the fourth wheel, and its regular turning holds the movement of the other wheels to a set speed. The fourth wheel turns once each minute. The second hand is attached to the fourth wheel. The center wheel turns once each hour. The minute hand is attached to the center wheel.

Each axle, or pivot, of the gears turns in a bearing. Jewels are often used as bearings in watches and clocks. The hard, smooth surface of a jewel allows the axle to move freely, and the jewel outlasts a metal bearing. High- quality timepieces have many jewel bearings, but jewels alone do not make a high quality ometer is a very large, accurate watch mounted in a special bracket to keep it level on a rolling sea.

The chronograph is an accurate timer that includes the timing action of the stopwatch and also indicates the time of day. Chronographs are valuable aids in laboratory tests and in studying the movements of stars or the time it takes a ship to sail from place to place. The most accurate astronomical clocks are used in observatories to time the movements of stars to the second.

The Workings of a Clock & Watch

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