O.S. Engine OSMG2083 21TM T-Maxx Manifold Performance Unit  [OSMG2083]

O.S. Engine 21TM w/T-Maxx Manifold
Price:
£188.26
Brand:
O.S. Engine
Model:
OSMG2083
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Engineered Gain in Displacement and Driveability

The O.S. Engine OSMG2083 21TM with T-Maxx manifold focuses on giving model drivers more usable power than the 18TM while keeping installation straightforward. It is suitable for both sprint racing and general bashing where responsive throttle is needed.

Mounting and System Compatibility

This 21TM model uses the familiar mount layout so many cars can accept it without chassis modification. The supplied manifolds are intended to cooperate with pull-start and EZ-Start systems and to link up with common clutch setups.

Adjustable Carburetion for Tighter Control

The three-needle carburetor allows careful tuning across idle, low and high ranges so you can optimise mixture for your track and weather. The LC3 glow plug aids consistent starting and steady operation.

Specifications

  • Displacement: 0.208 cu in (3.41 cc)
  • Bore: 0.669 in (17.0 mm)
  • Stroke: 0.590 in (15.0 mm)
  • Practical RPM: 3000-35,000
  • Output: 1.8 hp @ 29,000 rpm
  • Weight: 8.57 oz (243 g)
  • Includes: 11K-R carb (Revo)/11K carb (T-Maxx), LC3 glow plug

The O.S. Engine OSMG2083 21TM with T-Maxx manifold suits pilots who want a reliable, tuneable step up in performance that remains practical to fit and maintain.

The extra power of the 21TM may favour revisiting gear ratios for optimal acceleration and top speed. Start with the stock gearing and adjust if you notice the engine running too hard or lugging.
Balancing the 3-needle carb settings is key to getting smooth throttle response and reliable idle. Make incremental changes and test in short runs to avoid over-correcting.
After installation, check mount bolts, clutch engagement, glow plug function and fuel lines. Verify there are no leaks and that the engine runs cleanly before full-power sessions.
Yes, the 21TM is versatile enough for both surfaces. Tuning the needle settings and selecting appropriate gearing will help you match performance to either road circuits or dirt layouts.

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