O.S. Engine OS-1A203 - O.S. Speed B2101-TY w/T2090-TY Header and Silencer  [OS-1A203]

Ty Tessmann, OS group motorist, won 1/8 off road World Championship in Sicily in October this year. In commemoration of their staggering success, OS Engines are releasing Ty Tessmann limited edition 21 buggy engine. This is certainly combo set B2101 engine / T2090SC muffler / M2002SC manifold.

Internal framework is the same as SPEED B2101. The many points are:

• Normal color head with black letters
• Engraved crankcase
• Engraved crankshaft
• Engraved muffler
• Carb restrictor is 5.8mm, that can be not available in the marketplace but just making use of this unique version. The 5.8mm restrictor ended up being expected by Tessmann ahead of the entire world Championship in Sicily now we particularly provided to him the competition. He tried it and won.
• T-2090SC muffler with M2002SC manifold complete set just isn't for sale in the marketplace. M2002SC(code #72106480) is usually an optional part. M2002SC is significantly longer than M2000SC. The longer manifold increases torque in low-middle range.
• So the mixture of engine/muffler/manifold/carb restrictor is actually just what he found in the Worlds and simply available by this restricted version.

Spec:

• Displacement: 0.211 cu in (3.46cc)
• Bore: 0.646" (16.4mm)
• Stroke: 0.646" (16.4mm)
• Practical RPM: 4,000-42,000 RPM
• Production: 2.61hp @ 34,000RPM
• bodyweight: 12.42oz (352g)
• Distance Between Mounting Hole Centers identical component: 0.83" (21mm)
• Distance Between Mounting Holes Opposite Side: 1.4" (37mm)
• Height Bottom of Mounting Tabs/Top of Cylinder Head: 3.2" (82.6mm)
• Width of Mounting Tabs: 1.8" (45mm)
• Distance from Backplate to Front Bearing: 2.5" (64.5mm)
• Distance from Center of Crankshaft to Front Bearing: 1.7" (44mm)
• Distance from Center of Crankshaft to Backplate: 0.81" (20.5mm)
• Crankshaft Size: UNF1/4-28
• Crankshaft Length: 1.2" (29.5mm) outside engine
• Carburetor Settings: NOTE carburetor is preset at factory and needs only tiny corrections
• Needle Valve, 3-1/4 available from completely closed
• Mixture Control Valve, Flush with carburetor body
• Metering Needle, Flush with ball hyperlink human body
• Throttle Avoid Screw, More Or Less 0.5mm