Rody Roem and O.S. Speed produced new VS Racing 2101B off-road buggy engine

0 Sept. 21, 2016, 1:33 p.m.

By Aaron Waldron
LiveRC.com

New from World Champion Products:
www.worldchampionproducts.com

The new and exclusive VS Racing 2101B long-stroke .21 off-road racing engine is a combination of world-famous O.S. Max precision and technology together with additional development by Rody Roem. The engine is equipped with a special VS-specific combustion chamber, lightweight head, Roem’s “Bi-Turbo” crankshaft, and more to produce linear power and improved fuel consumption. It’s recommended for expert-level users.

Features:

O.S. Speed quality, power, and parts availability
Long stroke
ABC construction
3 transfer ports
Machined-flat piston
Double bronze bushing connecting rod
14mm SG-type ‘Rody’ crankshaft
Tungsten balancing weights to minimize vibration
Silicone ramping to smooth fuel mixture
14mm high-speed rear bearing
7mm sealed front bearing
VS-spec combustion chamber
Black-anodized VS-spec carburetor with 6.5mm venturi (which is interchangeable)

Specs:
Type: Off-road
Displacement: .21 cu. in. (3.49cc)
Bore: 16.27mm
Stroke: 16.80mm
Crankshaft: 14mm SG/SPT (TT)
Rear bearing: 14mm high-speed
Front bearing: 7mm high-speed
Sleeve: ABC
Transfer ports: 3
Exhaust ports: 1
Carburetor: VS Spec with 6.5mm venturi
Cylinder head: Lightweight, 60mm/10-fin
Combustion chamber: Turbo plug
RPM: 4-40K (Max power @ 30K RPM)
Weight: 355 grams