Aktiv Grizzly
Encyclopedia
Aktiv Grizzly, dual-track snowmobile, manufactured by Aktiv
Maskin Östersund
AB in Sweden.
The snowmobile is equipped with dual 38 x 384 cm tracks for maximum float and tracktion and single front ski (also dual front skis has been available for XP). Tracks cover area almost 1 m2, it is extremely well suited for deep-snow operations.
The Grizzly is powered by a reliable 497 ccm Rotax
503 Scandinavia, producing 38 HP (28 kW) at 5700 RPM. The carb is a VM 32, supplied by Mikuni. Earlier Grizzly (de luxe) have 1+N+1 gearbox and last model (XP) (1989–1991) have 1+N+2 gearbox.
The Grizzly was produced from 1979 to 1991. It is still recognized one of the best dual track snowmobile in the world. Both Bombardiers
Ski-Doo Alpine, Ski-Doo Alpine 2 and Ockelbo 8000 are similar dual-track snowmobiles.
In the mid 80's, the Grizzly switched from the traditional wheelbased bogie to a flexible joint-bogie, which made the ride smoother and the passability much better.
Aktiv started making tracked vehicles 1957 when they started making Snow Trac
, a small personal Snowcat that is roughly the size of a modern compact car. Aktiv started making small snowmobiles in 1973 when they bought Snö-Tric brand. First dual-Trac snowmobile made by Aktiv was Snö-Tric Blå 75- and SC 20/2 75-.
The Grizzly was also produced and sold on license by Polaris Industries under the name "Polaris Grizzly de luxe". This version had a Fuji 440 ccm engine. Also Finnish company Winhasold earlier grizzly (1982–1983) with own brand name Winha. Winha Grizzly had either traditional wheelbased bogie or flexible joint-bogie and it was equipped either with Artic Spirit AB 50, A3 engine or Fuji EC 44-2PM-3000 engine.
Currently there is two dual-track snowmobile in production, one Russia under name Buran and one in Italy under name Alpina Sherpa(weight Over 500 kg).
Said about the Grizzly
-Owners often refer to the Grizzly as "the tank"
-If you like pizza, you'll love the Grizzly!
-Another name is Titanic, it was unsinkable but... once you're stuck, you need a caterpillar!
-If you can't pull it with a Grizzly, don't pull it.
Red Cross in Norway are still using Grizzly
David`s Vintage Snowmobile Page on Aktiv Grizzly
Aktiv
Aktiv Was trademark of Swedish Aktiv Maskin Östersund ltd. Company started producing agriculture machines and tracked vehicles. Company sold agriculture division to Electrolux and focused to tracked vehicles in 1980. Company stopped working in 1991....
Maskin Östersund
Östersund
Östersund is an urban area in Jämtland in the middle of Sweden. It is the seat of Östersund Municipality and the capital of Jämtland County. Östersund is located at the shores of Sweden's fifth largest lake, Storsjön, opposite the island Frösön, and is the only city in Jämtland. Östersund is the...
AB in Sweden.
The snowmobile is equipped with dual 38 x 384 cm tracks for maximum float and tracktion and single front ski (also dual front skis has been available for XP). Tracks cover area almost 1 m2, it is extremely well suited for deep-snow operations.
The Grizzly is powered by a reliable 497 ccm Rotax
Rotax
BRP-Powertrain GmbH & Co KG , commonly known simply as Rotax, is an Austrian engine manufacturer. It develops and produces four-stroke and advanced two-stroke engines for Bombardier Recreational Products products as well as for motorcycles, karts,...
503 Scandinavia, producing 38 HP (28 kW) at 5700 RPM. The carb is a VM 32, supplied by Mikuni. Earlier Grizzly (de luxe) have 1+N+1 gearbox and last model (XP) (1989–1991) have 1+N+2 gearbox.
The Grizzly was produced from 1979 to 1991. It is still recognized one of the best dual track snowmobile in the world. Both Bombardiers
Bombardier Recreational Products
Bombardier Recreational Products or BRP is a Canadian company that traces its roots back to the year 1942 when Joseph-Armand Bombardier founded L'Auto-Neige Bombardier Limitée in Valcourt in the Eastern Townships, Quebec.In 2003, Bombardier Inc...
Ski-Doo Alpine, Ski-Doo Alpine 2 and Ockelbo 8000 are similar dual-track snowmobiles.
In the mid 80's, the Grizzly switched from the traditional wheelbased bogie to a flexible joint-bogie, which made the ride smoother and the passability much better.
Aktiv started making tracked vehicles 1957 when they started making Snow Trac
Snow Trac
The Snow Trac is a small personal Snowcat that is roughly the size of a modern compact car.-Origins and description:In 1954, Lars Larsson, the chief design engineer for a Swedish farm equipment company, AB Westeråsmaskiner, decided to develop a tracked vehicle to take him and his brother on fishing...
, a small personal Snowcat that is roughly the size of a modern compact car. Aktiv started making small snowmobiles in 1973 when they bought Snö-Tric brand. First dual-Trac snowmobile made by Aktiv was Snö-Tric Blå 75- and SC 20/2 75-.
The Grizzly was also produced and sold on license by Polaris Industries under the name "Polaris Grizzly de luxe". This version had a Fuji 440 ccm engine. Also Finnish company Winhasold earlier grizzly (1982–1983) with own brand name Winha. Winha Grizzly had either traditional wheelbased bogie or flexible joint-bogie and it was equipped either with Artic Spirit AB 50, A3 engine or Fuji EC 44-2PM-3000 engine.
Currently there is two dual-track snowmobile in production, one Russia under name Buran and one in Italy under name Alpina Sherpa(weight Over 500 kg).
Said about the Grizzly
-Owners often refer to the Grizzly as "the tank"
-If you like pizza, you'll love the Grizzly!
-Another name is Titanic, it was unsinkable but... once you're stuck, you need a caterpillar!
-If you can't pull it with a Grizzly, don't pull it.
Technical Data
| Overall length | 309 cm | |
| Overall width | 97 cm | |
| Overall height | 141 cm | |
| Overall weight | 375/345 kg | |
| Motor make | Rotax | |
| Motor type | 503 Scandinavia (Alpine) | |
| Number of cylinders | 2 | |
| Displacement | 497 ccm | |
| Bore | 72 mm | |
| Stroke | 62 mm | |
| HP(kW) @ 5700 RPM | 38(28) | |
| Max. RPM | 5700 | |
| Fuel lubrication | 2 Stroke Oil 50:1 (2%) | |
| Cooling System | Axial Fan | |
| Idle RPM | 2100 | |
| Ignition/Generator | CDI 12V/140W | |
| Spark Plug | NGK B7ES, B8ES or similar | |
| Spark gap | 0,5 mm | |
| Carburettor | 1x Mikuni VM 32 | |
| Fuel | Unleaded Petrol, 90 Oc. or better | |
| Engine Variator | Polaris/AKTIV | |
| Secondary Variator | Polaris/AKTIV | |
| Gear Exchange | 3,0:1 - 1:1 | |
| Transmission (De Luxe) | FWD 3,07:1 / REV 4,82:1 | XP R+N+2 |
Links/resources
Skoterportalen Grizzly Page (Swedish)Red Cross in Norway are still using Grizzly
David`s Vintage Snowmobile Page on Aktiv Grizzly