Posts Tagged ‘rotary mower’
We will continually add to this list of Popular Reel Mower Questions:
What is the difference between old and new cutting technologies?
All reel mowers have curved type cylinder blades that create a cutting action against a fixed plate. The blades make a spiral around the reel axis, and as they spin, the spiral of blades forces grass past the stationary plate.
Contact (friction) Mowers
This is the “older” more conventional form of cutting method. The cylinder blades are in direct contact with the bed knife and scrape across each other very similar to scissors shearing together. There is generally more friction (hence the name) which causes these mowers to be slightly more difficult to push. The friction also causes noise which can vary depending on each model – some are more quiet than others. Friction mowers generally need to be sharpened every 2 to 3 seasons. If you have a yard full of weeds then a friction mower is the best choice.
Contact-Free (frictionless) Mowers
The newer more modern reel mowers use a contact-free or frictionless cutting system. The term contact-free is used to describe a small gap (usually around 0.05mm) between the reel mower blades and the bed knife. The gap is roughly the width of a human hair and small enough to cut grass, yet big enough to eliminate all friction and noise caused by friction. Contact-free reel mowers are easier to push then the older style making them more fun to use and less tiring. Contact-free mowers cut best when used on healthy turf with minimal weeds. These mowers also cut best when used at lower cutting heights. There are some models available today that claim to be used on 2-3″ cutting range, however, much of the grass is left behind. The best cutting height range is 1-1.75″. Contact-free reel mowers usually do not need to be sharpened for at least 5-10 years depending on use.
When Do The Reel Blades Need Sharpening?
Most mowers stay sharp between 2-4 years depending on use. This can vary from lawn to lawn and manufacturer to manufacturer. You can tell when your reel mower needs to be sharpened when much of the grass passes by the reel and is left uncut.
Contact-free mowers do not require sharpening. Instead, it is a best management practice to adjust the gap distance between the reel and the bed knife. This is very easy can be accomplished in less then 3mins and performed as frequently as needed.
Contact mowers require sharpening on the average of every 2 years. You can purchase do-it-yourself sharpening kit and sharpen your own reel mower.
What Is The Best Cutting Height?
This is a very popular question and a topic with a lot of misinformation – especially if you surf around the internet… Reel mowers cut best when the cutting height is set lower then 2″. When set higher then 2inches, some of the grass tends to get “missed” and multiple passes can be required. For more information please visit our section dedicated to Height Of Cut (HOC).
Should I Buy/Use A Grass Collector Bag?
Our general recommendation is no, however, below are list of the pros and cons. For more information please read about Grasscycling here.
PROs To A Grass Bag
-Grass clippings are good for the compost pile
-Can prevent weeds from spreading if cutting the seed stalks
-Slightly “cleaner” look is achieved when removing more then 1/3 the grass height.
-Wet grass clippings can smother together and will not filter down as easily.
CONs To A Grass Bag
-Grass clippings hold valuable nutrients which can be returned to the soil.
-Grass clippings less then 1inch will filter down to the soil.
-Grass clippings DO NOT cause thatch!
-Unlike rotary mowers, grass clippings are not blown into a pile, they are gently scattered (mulched) behind the mower
You can see grass bag options here:
I have Emerald Zoysia at my new house and I own have a 4 year John Deere 21″ push mower that does okay but I want to buy a new mower. What type of mower should I buy?
If quality of cut is your top priority, then a good reel mower is the only way to go – a rotary, homeowner grade push mower should be your last choice. Zoysiagrass mowed by a rotary lawn mower looks terrible and you tend to get round scalp marks every time you turn the mower…
We recommend a power reel mower or the Scotts Classic Mower.
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Further to the basics of cutting height (you can read more here) and how it influences the quality of your lawn, let’s examine the equally important quality of cut (QOC).
In a separate blog entry I used the roses in the blender analogy to illustrate what happens to tender grass blades when cut using a rotary lawn mower. The key element at work in mowing grass with a rotary mower is SPEED – speed of the blade turning fast enough to tear or flail the tips off of the grass being mowed.
You may be surprised to learn that only the last ¼ to ½ inch of a rotary lawn mower blade ever does any actual cutting, but if you think about it the blade is moving so fast, that as you push the mower forward only that portion of the blade makes contact with the longer grass blade – everything farther down the blade just passes over the already mowed grass.
The sharpness of the blade is another misunderstood concept. Many people believe that a rotary blade should be extremely sharp, this is a misnomer:
Firstly, if you use a rotary you know that a razor sharp blade is impossible to maintain, just a few minutes of cutting will dull rotary blades significantly. The lifting force that many rotary mowers are designed with today also brings all kinds of debris into contact with the blade, dulling it significantly. That is why a rotary mower dealer or mechanic will not even recommend a blade that sharp, because it can’t be kept that way and is more susceptible to damage as you try to make it sharper and the leading edge becomes thinner.
Finally you would need to sharpen the rotary blade after every mowing, which is not only inconvenient; it can be dangerous if you are not careful and know what you are doing. If the blade is not perfectly balanced each time it can put tremendous strain on the mower as an unbalance blade spins irregularly on the drive shaft of the engine.
The bottom line is that the only way a rotary can mow grass is by shear speed and to smash the tips off the blades of grass. No matter what you do, you cannot overcome this mode of mowing action with a rotary lawn mower.
If you want the best looking, most healthy grass – stick to using a reel lawn mower. All the professionals use reel mowers……
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In my opinion, one of the reasons many so called ‘experts’ recommend a three inch cut for rotary lawn mowers is that they know it is NOT really a three inch cut. The reality is that the length of the grass blade left after mowing with a rotary lawn mower set to cut at three inches will always be much closer to two inches…read more.
What is the best HOC for the grass plant? If you look around the internet you may find that three inches seems to be a favorite recommendation. Why? There are many reasons for recommending a three inch cutting height, especially when using a rotary lawn mower. Interestingly, three inches is not the best HOC for the grass plant for many agronomic reasons.
What is the best height of cut for the grass on your lawn? There is no perfect or exact answer to this question so let’s discuss some of the variables that will impact this decision and why longer is often not better when mowing your yard. The very first thing to consider is what type of grass you have. This will be directly influenced by where in the country you live. If you live in the south or the west, you probably will have what we refer to as warm season grass, most typically a Bermuda grass variety, although there are many non Bermuda warm season grasses as well. If you live in the north down through the heart of the country or the mid-Atlantic, you probably have cool season grass, most likely Kentucky bluegrass, perennial ryegrass or a blend, although others exist here as well. The growth habit and physiology of these two types of grasses differ dramatically and we will discuss the differences elsewhere, but for now the important thing to remember is that warm season grass can tolerate and actually thrive at a very short mowing height, while cool season grasses generally prefer to be mowed slightly higher. What is not true is that either likes to be kept at an excessively long length and excessively long can legitimately be described as anything above three inches and shorter for warm season grass. Grass plants develop chlorophyll, the property that gives them their green color and nourishes them through a process called photosynthesis. This process is encouraged by sunlight. That is one of the reasons you have such a hard time growing grass under those large shade trees in your yard, no sun. Three inch grass blades and longer only serve to shade themselves, like when we wear a hat and this shade inhibits photosynthesis. At two inches, you have 33% less shade and a better developed leaf blade…
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So, you’re ready to purchase a new ecomower but you still have your old gasoline powered rotary mower sitting in your garage, the shed, your basement, or yard. What in the world should you do with it? Do you sell it? Should you give it away? Maybe you should take it to the dump or the transfer station? Letting your old lawn mower take the long journey to a landfill – or for that matter allowing it to be shipped overseas to some other landfill is a BAD idea. You’re buying an ecomower to help the environment, right? Why would you throw your old one away? If your gasoline powered lawn mower is ready to die and you can’t donate it, sell it, or give it to a friend, why not just recycle it!!
Recycling old lawn mowers is not an easy task and it can be difficult to find a local recycling center. For this reason, we have teamed up with Earth911.com to provide you with an extensive database of lawn mower recycling centers across the United States. Simply use the widget below and it will point you towards your nearest lawn mower recycling center. It is that easy!!
Lawn Mower Recycling Tool:
More About Earth911.com
Earth911 delivers actionable local information on recycling and product stewardship that empowers consumers to act locally, live responsibly and contribute to sustainability.
Reduce
Waste reduction is the process and the policy of reducing the amount of waste produced and ultimately disposed. Waste reduction or waste minimization, also known as source reduction, is simply reducing waste at its source. In the waste management hierarchy the most effective policies and processes are mentioned first. Waste minimization is also strongly related to efforts to minimize resource and energy use. The fewer materials used for the same production output means that less waste is produced. Waste minimization may require knowledge of the production process, product life cycle analysis (the tracking of products and their environmental impact from material extraction to their return to earth) and detailed knowledge of the composition of the waste stream. In waste management, product life cycle analysis is often referred to as a cradle-to-grave analysis.
The main sources of waste vary from country to country. Household waste constitutes a relatively small proportion of all waste in any country.
Reuse
When you use an item more than once, it is called reuse. Conventional reuse is where an item is used again for the same function, like when you refill a coffee cup instead of throwing it in the trash. It is also reuse when an item is reused for a different purpose, like when you use a 2-liter soda bottle as a seed-starter greenhouse.
Reuse helps the planet, but it also saves money. In many countries, this savings was not considered beneficial enough to forego the convenience of disposable products. Today’s consumer is becoming more aware of environmental concerns and this awareness is gradually changing business and government policies, and consumer attitudes about what the convenience of a disposable society is really costing us.
Recycle
Recycling is the processing of making used items into new raw material. Recycling conserves our natural raw material resources, and typically uses much less energy. Saving energy means that smokestack emissions of greenhouse gas and other pollutants like mercury are reduced at the power plant, and our energy sources are not depleted as quickly. Recycling is critical to today’s waste management programs.
Recyclable materials can be generated anywhere, and nearly anything is recyclable. They include paper, aluminum, glass, road surfaces, scrap metals, and all forms of plastics. Even food and lawn waste can be recycled. Fryer oil can be made into bio-diesel fuel, some plant products can be fermented into ethanol fuels, and some can be composted into fertilizer, or reduced in size to be used as mulch.
Recyclables need to be sorted and separated into material types before processing into new raw materials. Contamination with other materials affects the value and usefulness of the material to be recycled. This sorting can be performed either by the waste generator or the recycling facility.
The same is true of household recycling programs, and these can be broken down into two basic groups. 1) Curbside collection: where consumers leave recycling containers they place outside their property to be collected by a recycling vehicle. The materials can be either “source-separated” by the consumer into separate containers or commingled in one container to be separated at a Materials Recovery Facility (MRF) and 2) A “drop-off” program, where the consumer takes the recyclable materials to facilities where they are separated based on material type for further processing.
React
The “Three R’s” above outline what you can do to help preserve natural resources and protect the environment. With climate change and going green in the news daily, the list of steps everyone of us can take to help our planet is continually growing. React, obviously, is the next step. Conscientious Earth citizens have the ability to learn about the right things to do. After you learn, get out of your chair and actually do something about it: React! Make today the day YOU start to do something about it.
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Tags: engine, gas, landfill, lawnmower, mower information, oil, old, pollution, recycle, rotary mower, waste
Reel Mowers versus Rotary Mowers: Safety Precautions
The reel mower was the original form of mechanical mower for lawns, and the mechanism has changed little over the years; reel mowers have curved blades that produce a cutting action alongside a stationary steel plate. Rotary mowers, on the other hand, cut grass with a horizontal blade that moves at high speed. Although rotary mowers are popular with homeowners, they may pose a safety risk. The spinning blade of a rotary mower can throw debris hidden in the grass at very high speed or cut off a hand or foot if proper safety measures are not respected. The danger of rotary mowers can be demonstrated by placing on object in the grass chute:
Simply tie an uncooked chicken wing to the end of a broom handle. The wing, which looks a little like a human finger, is then placed in the grass chute as though it is being used to free clippings that have built up and are blocking the release of grass. The blade quickly shreds the bones and skin and shows the spectator what will happen if their hand or food gets too close to the blade . . . (Be sure to wear eye protection when conducting this demonstration.)Christians, Nick, Fundamentals of Turfgrass Management: Ann Arbor Press, Chelsea, Michigan: 1998, page 146.
Between the two mower types, Reel mowers are the safer choice, but all mowers must be operated with caution.
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Reel mowers have curved blades that produce a cutting action alongside a stationary steel plate. The blades form a spiral around the reel axis, and as they spin, the spiral of blades forces grass past the stationary plate. Reel mowers leave behind clean-cut grass, as if the grass had been cut with sharp scissors. Unlike the cutting action of scissors, however, it is not necessary for the blades of the spinning reel to contact the stationary plate. A clean cut is still possible if the gap between the blades and the plate of the rotary mower is less than the thickness of the grass.
 Reel Lawn Mower Diagram Drawing Rotary mowers, typically powered by gas or electric engines, cut with a single horizontal blade revolving at high speed. As it travels under a rotary blade, grass is torn and its edges are frayed. Consequently, grass blades are often left jagged as a result of rotary mowing. Grass with jagged edges will have a more difficult time healing from mowing and is more susceptible to disease and moisture loss.
 Rotary Lawn Mower Diagram Drawing
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