OS Engine O.S. Speed B21 Ty Tessmann II Combo (L-OS1A20A)

OS Engine O.S. Speed B21 Ty Tessmann II Combo (L-OS1A20A)

Ty Tessmann has delivered a power plant that's worthy of his winning pedigree with the Speed B21 Ty Tessmann II. Unique features include a low-profile cylinder head designed by Ty, a 5.8 mm carb reducer and laser-etched engravings of Ty's signature on the crankshaft cylinder head and crankcase.

FEATURES:

• Special low-profile cylinder head with double-height vertical fins, designed by Ty Tessmann.
• Crankshaft cylinder head and crankcase feature a laser-etched engraving of Ty Tessmann's signature.
• 5.8 mm carb reducer.
• 21J3 (B) slide valve carburetor.
• P3 Turbo glow plug.
• Exhaust seal ring.
• Dust cap set.

Specifications:

• Bore: 0.65 in (16.4 mm)    
• Crankshaft Threads: UNF 1/4-28    
• Cylinders: Single    
• Displacement: 0.211 cu in (3.49 cc)    
• HP: 2.61 hp @ 34,000 rpm    
• Height: 3.32 in (84.3 mm)    
• Length: 3.70 in (94 mm)    
• Plug Type: P3 Turbo Glow Plug    
• RPM Range: 4,000 - 42,000 rpm    
• Recommended Fuel: 10-30% nitro content    
• Stroke: 0.65 in (16.4 mm)    
• Total Weight: 12.6 oz (356 g)    
• Width: 1.77 in (45 mm)