• Snowmobile Dyno AbsorberToroid 9" single-rotor absorber and torque arm
Snowmobile Dyno Absorber1 2 3 4 5

Land & Sea’s affordable DYNOmite snowmobile engine dyno measures true installed horsepower, without having to “guesstimate” track and belt losses. Provides repeatability that racers and engineers demand for developing performance engines.

“Mounts directly… no engine removal necessary!”

Step #1, make personal contact! Phone: 603-226-3966 now.
Step #1, make personal contact! E-mail: sales@land-and-sea.com now.

The only dyno line that expands with your needs. Start today with a low-cost "Lite" model. Later add channels, upgrade software, etc. – without wasting your original investment. Most feature decisions may be revisited – years later. We manufacturer all major components in house – saving you third-party markups of competitors.

Reads TRUE crankshaft Hp using precision full-bridge strain gauges to directly measure actual torque, instead of estimating from hydraulic pressure or inertial acceleration. Only crankshaft dynamometers isolate Hp from the inconsistencies of belt efficiency, track tension, windage, etc. to provide repeatable data serious developers need to compare against the OEM’s and other engine-builders’ results.

Patented torque transducer technology is immune to temperature changes and the length of the moment-arm (anti-rotation point). So, it requires no correction for jackshaft center distances. Pushbutton (semi-automatic) zeroing of the torque offset calibration is also standard.

Load engines indefinitely, water-brake absorbers are not limited to only a few seconds of flash inertial track acceleration. It’s a tool… not a toy.

Automated load control simplifies steadying the peaky snowmobile engines, it reacts faster to sudden torque changes than most humans can. Our optional electronic-servo load valve replaces the standard manual-load control. Once installed you use buttons to select the test RPM, or sweep rate, and then let the computer do the rest of the work.

Advanced standard features including: Smart Record™ trigger points, data dampening with spike filtering, auto-zeroing, instant playback, adjustable data averaging, atmospheric correction, and integral adjustable engine rev-limiter.

Snowmobile test cell installation using DYNOmite “Pro” Snowmobile Engine Dynamometer kit with thermostatic cooling tower, test stand, fuel system, air and fuel-flow transducers, relay control subsystem, and self-starter.
300+ Hp* capacity with our industry-proven, heavy-duty bearing, fast- response 9" toroidal-flow water-brake absorber (mounts directly onto the crankshaft). Test most performance engines from your ¾" garden hose (or higher-flow) water supply.* (Other water or eddy-current absorbers are available to test any capacity snowmobile engine.)

   → MAX-narrated animated look at: How Water Brakes Work
Standard 9" toroidal flow DYNOmite Snowmobile Engine Dyno kit (LCD version shown – without its portable carrying case or manual).
Standard dyno kit includes: 9" toroidal-flow water-brake absorber, electronic torque-arm transducer, engine load control, DYNOmite handheld data-acquisition computer with backlit LCD and keypad interface option, AC power supply, stainless-braided hoses, puller bolt, data wiring harness, and protective carrying case. (DYNO-MAX PC software, clutch dyno systems, and optional PWC adapters available also.)

   → See General Specifications or Models and Prices pages.
The DYNOmite’s patented torque arm and brake fit easily in place of stock clutches and drive belt – test anywhere. It’s the sled magazines’ standard for Hp testing.
Precision designed and manufactured for strength, accuracy, and reliability. Each water-brake absorber, torque arm, load-valve, etc. is beautifully CNC machined from anodized aircraft billet aluminum and heat-treated 17-4 stainless steel.
Our CVT dynamometer module allows simultaneous capture of both the engine’s input Hp and the remaining output power – after all belt and clutch pulley losses.
Isolate clutching efficiency gains from ones that are just due to RPM calibration improvements, without endless trial and error field testing. Only true crankshaft and clutch dynamometers can do this! All the OEMs use them to develop quicker sleds – by pinpointing the optimum RPM range of component and tuning changes. Learn things “you never knew – you never knew.”
True load control track dyno option, for servicing stock sleds – without snow! Track driven, no clutch, or track idler removal – no chain drive to mount. Quick drive-on ramps.
Everything gets tested, right in the sled, the way you run it. Evaluate air- box flow, throttle travel and oil-injection-cable adjustments, fuel-delivery system, exhaust routing, motor- mount play, vibration problems… everything.

Develop quicker sleds by finally pinpointing the optimum RPM range for every horsepower gain (or shift). Evaluate components, tuning changes, durability, etc. Learn things “you never knew – you never knew.”

Profitably troubleshoot without snow or wasting your valuable time trailering around trying to find conditions where you can accurately test. Why run up non-billable hours separating owners’ imagined power losses from real ones? Customers who scream over a charge for on-snow testing willingly pay extra for dyno time… as long as it includes a computer printout. Smart dealers routinely display the DYNOmite to enhance their shop’s image and to support higher labor rates!

Easy test set-ups by mechanics with little, or no, dyno and computer experience. Even run outside, without an expensive dyno-cell ventilation system. Just remove the sled’s clutches, bolt the DYNOmite to the PTO, hook up a few wires and hoses, and test (without spending hours swapping a dirty suspension). Go right from riding, to outputting Hp data, in less than 15 minutes. Watch the snowmobile dyno test video!

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 accessories array, including: temperature sensors, flow transducers, etc.
Affordable upgrades including: jackshaft RPM/MPH sensors, thermostatically controlled cooling tower, fuel-flow and airflow turbines, weather station, EGT thermocouple kits, AFR monitors (4-strokes), fuel-flow and airflow turbines, weather station, EGT thermocouple kits, AFR monitors, pressure transducers, RTDs, thermistors, knock sensors, five-gas analyzers, crankshaft-position encoders, cylinder-pressure mapping, and auto-load and throttle-control options.

   → See DYNOmite Accessories section for more details.
DYNOmite eddy-current track (or clutch only) driven dynos. Custom designed for snowmobile OEM’s load simulation and Hp. (Call for more information.)
Specialty sled dynamometers are available as both production and custom systems. As you can see on these pages, we manufacture more types of dynos than any other company in the world. Are you looking for a drive-on track model for quickly running-in stock snow machines, a CVT dyno for designing clutches, an AC dynamometer for advanced R&D lab emissions testing, or a 600 Hp 12,000 RPM Siamese-rotor absorber for asphalt-drag engine dynoing? If so, we can help you.
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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