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Any ROTAX 277UL, 377UL, 447UL, 503UL Big Bore Options???

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Armilite

Well-Known Member
Joined
Sep 5, 2011
Messages
3,739
Location
AMES, IA USA
Does anyone know of any, 277UL, 377UL, 447UL, 503UL Big Bore Options???

Has anyone tried putting 503UL cylinders on a 377UL/447UL block?

Has anyone tried putting NEWER Skidoo 550F cylinders on an older Provision 8 503UL block?

Does anyone, have any 3D Solid models of these, 277UL, 377UL, 447UL, 503UL, Rotax engines?

Rotax 277UL 26HP AT 6250RPMS

  • Bore: 72 mm
  • Stroke: 66 mm
  • Displacement: 268.7 cc

Rotax 377UL 35HP AT 6500RPMS

  • Bore: 62 mm (2.44 in)
  • Stroke: 61 mm (2.40 in)
  • Displacement: 368.3 cc (22.48 cu in)
Rotax 447UL 40HP AT 6500RPMS

  • Bore: 67.5 mm (2.66 in)
  • Stroke: 61 mm (2.4 in)
  • Displacement: 426.5 cc (26.64 cu in)
Rotax 503UL 50HP AT 6500RPMS

  • Bore: 72 mm (2.84 in)
  • Stroke: 61 mm (2.4 in)
  • Displacement: 496.7 cc (30.31 cu in)
SKIDOO/ROTAX 550F 58HP AT 6500RPMS

  • Bore: 76 mm (3.0 in)
  • Stroke: 61 mm (2.4 in)
  • Displacement: 553.4 cc (33.8 cu in)
Rich Gillen
[email protected]
 
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