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Topic: Rotovator

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	Tether propulsion - Definition, explanation
		Rotovators (sometimes called momentum exchange tethers) could theoretically open up inexpensive transportation throughout the solar system, as long as the net mass flow was toward the Sun.
		Momentum charging uses the rotovator to move mass from a place that's higher in the gravity well to a place that is lower in the gravity well.
		Although ultra-high strength plastic fibers (Kevlar and Spectra) permit rotovators to pluck masses from the surface of the Moon and Mars, a rotovator from these materials cannot lift from the surface of the Earth.
	www.calsky.com /lexikon/en/txt/t/te/tether_propulsion.php (1766 words)

	Article: Cosmic Rope Tricks: Space Tethers and Rotovators, by Paul Lucas
		A Rotovator is a spinning orbital tether built on a truly gigantic scale, designed to reach down from space into the lower atmosphere, or perhaps even to the surface of the Earth, to pick up and drop off payloads directly.
		Rotovators by necessity would have to be built of extremely strong but flexible materials, as the stresses they would have to endure both from their spin and picking up significant masses are enormous.
		Rotovators need not always be quite on this scale, but a length of several hundred miles is probably the minimum.
	www.strangehorizons.com /2003/20030414/rope.shtml (2472 words)

	Rotovation as a Eurasian watermilfoil control method
		Rotovation is not recommended in waterbodies with early infestations of milfoil since fragments are created and rotovation may increase the spread of milfoil throughout the waterbody.
		Rotovation is less effective in the summer when the long milfoil plants wrap around the rotovating head, slowing down the operation.
		The objectives of the study were to document effectiveness of rotovation by measuring changes in milfoil stem densities before and after treatment, and to assess impacts of rotovation on selected water quality parameters, benthic invertebrates, and the fisheries.
	www.ecy.wa.gov /programs/wq/plants/management/rotovation_strategies.html (1218 words)

	Tether propulsion Summary
		An example of use would be a rotovator in a circular orbit with the tip velocity zero relative to (or at) the ground that grabs an object from high altitude.
		Momentum charging uses the rotovator to move mass from a place that's higher in a gravity field to a place that is lower in a gravity field.
		Systems of rotovators could theoretically open up inexpensive transportation throughout the solar system as well, as long as the net mass flow is towards a massive body, such as the Sun, or the Earth.
	www.bookrags.com /Tether_propulsion (2764 words)

	Dept. of Environmental Protection (DEP) State Lands: Suwannee River Office
		Rotovator work should also increase aeration and drying of the muck level promoting break down of organic material.
		Twenty hours of rotovator work were conducted with the same tractor using a Howard HR 20 rotovator with a 90 inch cut.
		The Rotovator was workable in the same areas as the mower.
	www.dep.state.fl.us /lands/invaspec/4thlevpgs/Suwregionmap.htm (768 words)

	Product Search - rotovator hire surrey
		Companies that offer products and services related to rotovator hire surrey should be in our directory which currently contains more than 2 million listings.
		Homepage for Rotovator Hire in Surrey, Hampshire and Berkshire...
		A Tiller, also known as rotovator, garden tiller or rotary hoe is a...
	www.searchengine.com /default.asp?sb=1&d=&search=rotovator+hire+surrey&searchButton.x=0&searchButton.y=0 (245 words)

	New Dimension Media
		Rotovator, our friendly host, as he tells us, his multiethnic primary-age friends, and his flowers and plants, all they need to know about each other.
		Rotovator shows children how plants are like us since they need water, air, and must grow and reproduce, but different in that they make their own food.
		Rotovator, our friendly host who talks to the camera, to the plants, and to the primary-age children on-camera, makes this a production perfectly suited to its intended primary-age audience.
	www.ndmquestar.com /nr_plants.asp (375 words)

	Space Elevator vs Rotovator - Bad Astronomy and Universe Today Forum (Site not responding. Last check: )
		A rotovator is possible, although perhaps one that reaches into the upper atmosphere rather than down to the ground.
		A rotovator is less of a technical challenge and so is more likely to be built, but again it is in competition with cheaply utilizing resources in space.
		Since both space elevators and rotovators are quite slow compared to rockets and because of radiation hazard from the Van Allen radiation belts, they may not be popular with passengers.
	www.bautforum.com /showthread.php?p=973496 (2693 words)

	Momentum-Exchange Tethers
		Unfortunately, his analysis showed that unless very strong tether materials can be found, the mass ratio of a rotovator for the Earth or other large planet becomes too high to be practical to build.
		This is unfortunate, because otherwise, it would be possible to build tether transport systems that would allow travel between the surface of the Earth and the surface of any solid body in the solar system without requiring fuel, provided the mass flow in toward the Sun slightly exceeds the mass flow outward.
		Moravec did find that rotovators were feasible for the Moon and other small airless bodies.
	www.tethers.com /MXTethers3.html (493 words)

	Page 2 - Use a rotovator to clear an overgrown allotment
		Ask the hire shop which type of rotovator is best for your allotment and take their advice.
		If you hire a rotovator which is not up to the job it will be a waste of money.
		We ended up with a powerful hydraulic rotovator and it was well worth the money.
	www.gardenaction.co.uk /allotment/allotment-clear-2.asp (552 words)

	Ribalta Ros SCP. Maquinaria para agrigultura y ganadería - Material de ocasión
		Rotovator AGRIC BMR-80 de 2,05 mts, cambio de 2 velocidades.
		Rotovator AGRIC BMS-80 de 2,05 mts, lateral de cadena.
		Rotovator AGRIC SRM-90 de 2,30 mts, lateral de piñones y ruedas.
	www.ribaltaros.com /mocasion.htm (755 words)

	Rotivators and Cultivators: SafeGardening
		However, a rotovator tends to be used for jobs that require deeper digging and its blades are more powerful helping you to turn over deeper areas of grass and soil.
		Many gardens are not that large and some gardeners view rotovators as trying to crack a peanut with a large heavy mallet.
		If your garden is the size of a small field and the soil is basically free of weeds then a rotovator is the ideal tool although they can be very expensive so it may be worth looking at hiring one or getting someone in to do the job for you.
	www.safegardening.co.uk /RotivatorsCultivators.html (468 words)

	Major Equipment's range includes mowers, shredders, stone burrier, rotovator, power harrow and sweepers.
		The MAJOR Rotary Hoe and Stoneburrier is suitable for ground preparation in many different circumstances, ranging from agricultural to amenity and local authority situations.
		The MAJOR Rotovator for tractors up to 55HP is available in 1.25m, 1.45m and 1.65 m widths.
		The MAJOR Rotary Harrow is perfect for seedbed preparation as spring steel blades aggressively churn soil to a depth of 6".
	www.major-grasscare.com /groundscare.htm (255 words)

	[No title]
		It would have to be at least 250 kilometers long, and would have to have a climbing weight facility to lengthen or shorten the cable.
		Aside from the fact it would have to be made from "unobtainium", the sheer mass required by a 'vator like this would cause all kinds of problems with tides and weather patterns.
		Payloads are launched using a re-usable transonic vehicle such as the DF-9 concept vehicle, and carried to an altitude of 100 km and a velocity of 3.5 km/s, then handed off to the 'vator for HEO insertion or escape.
	www.orbitersim.com /Forum/default.aspx?g=posts&m=168341 (884 words)

	The Space Elevator Thread - Viewing a thread
		Nobody is suggesting that a rotovator that lifts payloads all the way from the Earth's surface to LEO would be practical with current technology.
		The whole point is that a rotovator could substantially reduce cost to acheive LEO and would be cheaper and technically easier to build than a full blown elevator.
		The problem that both the SE and rotovator will suffer from is that they will both interfere with existing satallite orbits and some kind of active avoidance will have to be allowed for.
	forum.nasaspaceflight.com /forums/thread-view.asp?tid=10147&mid=216051 (927 words)

	Which rotovator to buy? - View topic :: Total France
		Whilst rotovators are great for preparing soil as a one-off for lawns, for regularly cultivated areas like your veg patch, my personal advice is to avoid rotovators.
		When the blade is at the bottom of its cycle, the weight of the machine is on it and it tends to pack down the soil forming a pan.
		My neighbours rotovate as well and have a much larger potager than me but a lot of soil space and goodness is wasted by being trodden on and choked with weeds.
	www.totalfrance.com /france/forum/viewtopic.php?t=10479 (1779 words)

	Mingxin Machinery Co., Ltd.walking tractor,power tiller,hand tractor,cultivator,rotovator,two wheel ...
		Linshu Mingsin Machinery Co., Ltd., is a larger manufacturing enterprise for walking tractors (also can be called as power tillers, hand tractors, two wheel tractors or rotovators), rice and wheat threshers, rice mills, rice hullers, flour mills and other machines or tools.
		Using the good quality spare parts, advanced equipments, and adapt strict management, we can supply the good quality walking tractors (also can be called as power tillers, hand tractors, two wheel tractors or rotovators) and other rice or wheat processing machines.
		Our walking tractors (also can be called as power tillers, hand tractors, two wheel tractors or rotovators), rice mills, rice hullers, wheat and rice threshers and flour mills have been exported to more than 50 countries and regions.
	www.commerce.com.tw /modules.php?modules=company&action=company_inside&ID=E0007949 (256 words)

	Autrusa Enterprises - Imants rotary spaders
		Heavier duty models are available in working widths from 6ft up to 9.5 ft. All can be fitted with a power harrow or rotovator as well.
		A seed drill or bed-shaping device can also be attached on most models using an extra 3-point linkage, thus allowing the soil to be tilled and sown in a single pass.
		A deep spader is a machine, which works the soil to depths deeper than 24”, with models that can work down to a maximum depth of up to 50”.
	www.autrusa.com /imants.html (992 words)

	Yesterday's Tractors - Discussion Forum
		Your Rotovator is a newer model than I thought and the information I gave you is incorrect for that model.
		Using the TE20 or TO20/30 on a Rotovator was, as you said too fast forward so you had to have a reduction gearbox fitted into the Tractor, Howard made one that went into the Hydraulic Housing and Sherman's made one that went into the Clutch Housing.
		Non-Live PTO doesn't present a problem with a Rotovator really other than you need to be able to stop the blades going around when the machine is lifted and that was on the original type that I thought you were describing.
	www.ytmag.com /cgi-bin/viewit.cgi?bd=ferg&th=53004 (928 words)

	Husqvarna Rotovators \| Garden Rotovators and Equipment
		We have a huge range of Rotovators from a number of manufacturers.
		Husqvarna are a well respected brand in the garden machinery industry and these rotovators are tough and durable machines.
		Please don't hesitate to contact us using the number at the top of the page should you want to discuss your requirements.
	www.gardeneers.co.uk /content/gardeneers_husqvarna_rotovators.php (62 words)

	Single axle Tractors
		The draught force they exert is low as it is dependent on the weight on the driving wheels and is usually less than the draught force from a good team of oxen.
		The most suitable environment for using rotovators is under wetland or irrigated agriculture, where the soil moisture content can be controlled to suit the use of rotovators and where there is usually an adequate quantity of organic matter to incorporate into the soil to increase soil aggregation.
		Otherwise rotovators tend to pulverise the soil, particularly under dry soil conditions, destroying soil aggregates and leaving a high proportion of individual soil particles.
	www.fao.org /sd/teca/tools/lst/LSTP8_en.html (314 words)

	welcome to YUAN KAI MACHINERY CO.,LTD
		Wheel base and rotovator are easily adjustable to accommodate every operator.
		Body and rotovator parts are easy to remove and can be replaced with other accessories.
		With the rotovator removed, the tiller can be converted to direct drive power tiller capable of tilling 1 m wide and 25 cm deep.
	www.yk.com.tw /contents/Tillers.htm (216 words)

	Muses on Rotovating (Site not responding. Last check: )
		Generally speaking we have been rotovating twice a week depending on how well the weeds seem to be growing.
		Most PTO drive shafts on a Rotovator you are likely to find are 1 3/8 and the Fergie output is 1 1/8”.
		The old cultivator may come in handy if we break the rotovator and need to give things a wee turn whilst we are waiting for parts, but I doubt it.
	www.holland-brand.co.uk /rotovate/rotovating.htm (1542 words)

	Rotovator hire in Hampshire, Surrey and Berkshire
		We now specialise in Rotovators and have chosen a selection of models to suit your requirements and budget.
		Our small Rotovators are also great if the operator would have difficulty controlling one of our larger models.
		A Rotovator, also known as garden tiller or rotary hoe is a motorised cultivator.
	www.rotovatorhire.co.uk (169 words)

	Rotavator / Rotovator
		I noticed on your site a question posed about rotovators, you say they are very hard work and are only able to dig the first 2-4" of soil.
		The reason why I'm making this point is that rotovators are very close to my heart, having a collection of five, all fully restored and used on a regular basis.
		The biggest of which, has an 810cc Twin Petrol engine, a digging width of 24" and is quoted as digging 9" I have personally had this machine digging a full spit of earth (12" and more) and is not a new machine, having been made in 1967.
	www.angliangardener.co.uk /lawncare/rotavators.htm (1159 words)

	yurdusar agricultural machines mobile rotovator
		Mobile Rotovator is a hanging type of earth driller driven by the P.T.O. shaft.
		It can be adjusted as per operation on the tree bottom, in the garden and on the field.
		In the same time, it is used at the preparation of sow channels.
	www.turkishforeigntrade.com /yurdusar/gezerli.htm (66 words)

	Pasture Renovation
		There is an alternative, though, to purchasing such costly equipment: Many homesteaders own hand rototillers or tractor-mounted rotovators that can easily be adapted to do the same job as the harrow...
		If your garden tiller has bolt-on tines, all you have to do to convert it for pasture use is fashion a set of straight blades (the same size as the curved ones), then attach them.
		It is true that, using a three point hitch, it's easy to drop off a mower or tiller and hook on a new set of straight disks when you're ready for a day of pasture renovation.
	www.motherearthnews.com /Homesteading-and-Self-Reliance/1980-09-01/Pasture-Renovation.aspx (2319 words)

	Djed
		Djed, Rotovators, and the Tri-Arc: The symbol of the Mutual Progress Alliance is three gold rings surrounding a star.
		The rotovator system, using atmosphere capable shuttles for the first and last portions of each journey, permits rapid transport between the different Tri-Arc habitats, Djed, and outlying habitats traveling ahead and behind the system in its orbit.
		Spacecraft are assigned parking orbits by system traffic control and are then met by shuttles which either dock at the desired location or are routed through the rotovator system to the nearest available landing stage to the traveler's destination.
	www.orionsarm.com /worlds/Djed.html (627 words)

	Bear Slashing Ltd.
		Description: Mobile wheeled mulcher suitable for most agricultural applications fitted with 2.5 rotovator drum or 3 metre rock crushing drum.
		Description: Mobile wheeled mulcher suitable for most agricultural applications fitted with 2.5 rotovator drum or 2.5 metre rock crushing drum.
		Description: Modified with wider tracks to lower the ground pressure for logging and timber salvage operations in soft conditions.
	www.bearslashing.com /b_equipment.html (249 words)

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