• THE ULTIMATE PTO DYNO:State-of-the-art dynos with sophisticated data-acquisition and software
THE ULTIMATE PTO DYNO:1 2 3

Land & Sea’s DYNOmite Tractor PTO dynamometers are affordable, state-of-the-art agricultural dynos. All feature sophisticated data-acquisition electronics and powerful software packages – at a price/performance ratio formerly unheard of for a farming-tractor PTO dyno.

“Modular designs… allows field- upgrading power capacity!”

Step #1, make personal contact! Phone: 603-226-3966 now.
Step #1, make personal contact! E-mail: [email protected] now.

Typical Tractor PTO dynos include: overdriven eddy-current absorber(s) with load-cell, cooling fans, DYNOmite data-acquisition computer, AC supply, DYNO-MAX software, electronic auto-load control, RPM pick-up, trailerable frame – with (removable) height-adjustable tongue, heavy-duty absorber-to-PTO shaft, telescoping guard, calibration arm, and data wiring harness. (Other voltages and capacities available – call.)

   → See General Specifications or Models and Prices pages.

Trailerable PTO dynamometer with its (overdriven) dual #650 eddy-current absorbers, allows testing typical tractors to 1,000+ Hp. No cooling water or hydraulic pump maintenance is required.
Automated computer control is a standard feature. Just push the buttons to select the operating RPM, or set a sweep rate and allow the DYNOmite’s advanced PID algorithms to run the whole test. The computer logs all of this data automatically. (Simultaneous electronic throttle control, via DYNO-MAX, is also an available option.) Other advanced options include: fuel-flow and airflow turbines, blowby sensors, weather station (for automatic atmospheric data), EGT (exhaust-gas temperature) thermocouple kits, pressure transducers, direct-mount smoke-opacity meters, temperature thermistors, and more.
   → Watch video of a typical tractor-PTO dyno-tuning session.
Stick-figure cranking money-making machine.
Financing is available to let you start making money from your investment, before making a payment! Our equipment financing options allow you to generate revenue – with low monthly payments, that are 100% tax deductible to the IRS. Better yet, these financing options avoid restrictive bank ratio calculations and keep any bank lines of credit your business has – open.

   → Click for Equipment Financing.
Our DOT approved trailering package includes rubber-torsion axle, brakes, street-legal tires, adjustable-height (removable) tongue, dolly wheel, light package, safety chains, plate mount, and VIN numbers.
Trailer options include our DOT-approved light package, surge brakes, safety chains, plate mount, and VIN numbers for registering the trailer for on-road travel. Easily travel from service shop to service shop or even in-field tractor testing. Retractable leveling stabilizers (removable for towing) permit testing on uneven farm surfaces. They allow handling the higher-torque loads of larger power or modified agricultural tractors.

   → Watch one customer's tractor-PTO dyno video!
All you need is an electrical outlet (or small generator) to test right in the field. The included leveling/stabilizer jacks swing up and the heavy-duty driveshaft stows right in the frame’s compartment – for towing with the trailering option (shown above).
Heavy-duty driveshafts are used in both our single- or dual-absorber PTO dynos (as shown at left). All the shafts and U-joints are heat treated – for longer life under the extreme torque loads of full-throttle PTO testing. A telescoping shaft guard is included. Environmentally sealed industrial S-beams load cells measure the precise shaft torque, allowing the data-acquisition system to accurately calculate repeatable real-time horsepower. Pushbutton, semi-automatic zero-offset calibration is a standard feature. Both clockwise and counter-clockwise rotation output shafts may be tested.
Models are available to test virtually any tractor (or similar equipment). The PTO dynamometer’s modular design also allows upgrading as testing needs change.
6,500 foot-pound* and 1,300+ Hp* capacity using our dual eddy-current absorber configuration. The lighting-fast control of our electric absorbers provides far better controllability than older hydraulic pump-type PTO dyno designs. (Other custom absorber combinations are available to test engines from 1 to over 2,600 Hp.)

   → MAX-narrated animated look at: How Eddy-Current Absorbers Work
No matter how large your tractors, we have a PTO dynamometer up to the task. Here, EkotuningCom of Canada performs some magic on a tracked Case.
Available in a range of sizes to match the tractor to the dyno’s PTO capacity. We offer the widest array of capacities in the industry, ready for any range of tractor-testing requirements. Sophisticated data-acquisition features include: “Smart Record™,” data dampening, spike filtering, inertial compensation, data-point averaging, atmospheric correction, auto-zeroing of load cell, instant data playback, and integral rev-limiter.
All types of smaller tractors can be tested with a single DYNOmite PTO dynamometer. One unit will handle both high and low RPM ranges, plus either clockwise or counter-clockwise rotation.
Reduce field-service problems by getting work right the first time. Uncovering turbo or injection system malfunction, or other issues, is no longer trial and error. Dyno testing protects profits while simultaneously boosting customer satisfaction. Low-cost and rapid hookup, by mechanics and technicians with no dyno experience, are just two benefits of the DYNOmite PTO system's unique design. Just back up to the dyno, hook up the PTO shaft, and begin testing. You get quick horsepower plots of the entire torque vs. RPM curve.
Even the world's most power full pulling tractors can be tested with the DYNOmite super-duty axle-hub tractor dynamometers.
Sustained (remote site) endurance testing requires an energy-dissipating absorption dynamometer – with integral cooling. Unlike hydraulic dynos, air-cooled eddy-current absorbers can load a tractor (at PTO or axle) indefinitely.* Their electronics also allow running controlled RPM step, sweep, load percentage, or even custom "real-world simulation” tests. Everything is under computerized electronic auto load control.

   → Click to, PTO-RPM based, load charts for more info.
DYNO-MAX dynamometer control software screen.
DYNO-MAX™ “Pro” Software creates a full console on your PC. Features include: real-time trace-graph display, adjustable-limit alarms, pushbutton controls, user-configurable analog and digital gauges, customizable graphing, formula editor, test database, instant playback, inertia compensation, Smart Record™, adjustable dampening, import/export options, automatic zeroing, voice warnings, dragstrip Xmas-tree console, free iPhone control app, etc.

   → Click for full list of DYNO-MAX features.
DYNOmite data acquisitio electronic circuit-board set.
DYNOmite data-acquisition computer displays and records true Hp, torque, RPM, elapsed time, etc. at up to 1,000 readings per second (per channel). It even applies SAE correction factors for temperature, barometric pressure, and humidity – a full report prints out automatically! Electronic load and throttle control options – just push buttons to select the test RPM or sweep rate and the DYNOmite’s advanced PID algorithm runs the show – hands free. No running engine to death for a power curve.

   → Click for full list of DAQ features.
DYNO-mite Dynamometer support technican.
Live-person technical phone support from snowmobile-dynamometer testing experts, provides a significant advantage over other companies’ obnoxious voice-mail runarounds. Also, our hardware’s lifetime phone and e-mail support, plus access to the special DYNOmite owners 24/7 web support area, are all FREE!

   → See DYNOmite Support Access page for more details.

*Approximate; continuous capacities depend on selected absorber and test speed. Air-cooled absorber loads are rotor temperature dependent. Water brake power capacities are RPM dependent and assume a minimum water supply of 1 gpm @ 30 to 60 psi for every 20 continuous Hp. Call Land & Sea, Inc. at (603) 226-3966 for the approximate capacity of any specific test configuration.

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