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L-OS13941£455.89
Take down the competition with the 21XM Version II Outboard Marine engine from O.S.! Designed expressly for small and medium sized outboard boats, it retains many of the features found on the successful 21XM, including the 20J carburettor and #8 glow plug. New additions include efficient air cooling, a larger muffler, aluminium tilt transom mounting plate, outboard unit with flexible propeller and blue anodised aluminium heatsink head.

The Complete Outboard Unit !!

£455.89

Buy NowSupplier stock. Despatch will take 3-5 days longer than our standard delivery time.
Part No: L-OS13941
Item Name: OS O.S. MAX 21XM Ver.II Outboard
Brand: OS
L-OS13960£160.64
The 30 VG from packs the largest amount of power into the smallest possible crankcase. This engine will fit into a conventional .21 size mount, and provide staggering levels of power. Supplied with a 'P' style crankshaft, and a slide carburettor. Requires external starting equipment suitable for your car.

SPECIFICATIONS
Bore:18.5mm (0.728")
Displacement:5.0cc (0.298cu.in.)
Power Output:3.0PS @ 28000rpm
Practical RPM:4,000 - 36,000

£160.64

Buy NowSupplier stock. Despatch will take 3-5 days longer than our standard delivery time.
Part No: L-OS13960
Item Name: OS O.S. MAX 30VG(P)
Brand: OS
See Further Items Recommended for O.S.-MAX-30VG(P)
L-OS14000£160.94
The brilliant new O.S. 37SZ-H is the perfect choice when you want the ultimate in performance from your 30 class helicopter. Features a super-rigid crankcase, ringed piston/liner assembly, and a new carburettor for precision control, suitable for use with push-pull set ups. An outstanding performer.

SPECIFICATIONS
Bore:20.5mm (0.807")
Displacement:6.07cc (0.37cu.in.)
Power Output:1.4PS @ 18000rpm
Practical RPM:2,000 - 21,000

£160.94

Buy NowSupplier stock. Despatch will take 3-5 days longer than our standard delivery time.
Part No: L-OS14000
Item Name: OS Max 37SZ-H Ring
Brand: OS
See Further Items Recommended for OS-Max-37SZ-H-Ring
L-OS15490£119.18
Designed to succeed the original 46AX, the new 46AX MkII retains the same mounting dimensions, but O.S. have updated the styling to bring it into line with the current range of AX engines. That means the introduction of the highly efficient and unique cooling fins to keep temperatures under control while the precision carburettor, with its angled needle valve keeping fingers safely away from the propeller disc, offers the linear response across the entire rpm range that you would expect from O.S.

SPECIFICATIONS
Bore:22.0mm (0.866")
Displacement:7.5cc (0.455cu.in.)
Power Output:1.63hp @ 16,000 rpm
Practical RPM:2 - 17,000

£119.18

Buy NowIn stock for immediate despatch.
Part No: L-OS15490
Item Name: OS O.S. MAX 46AXII w/E-3071 Silencer
Brand: OS
L-OS15550£191.39
The ultimate 50 class helicopter engine. Features a CNC machined cylinder head, for increased power with improved cooling, twin ball races, and a newly designed high performance carburettor for razor-sharp control of the immense power and torque available. Outstanding quality, with performance to match.

SPECIFICATIONS
Bore:22.0mm (0.866")
Displacement:8.17cc (0.50cu.in.)
Power Output:1.9PS @ 17000rpm
Practical RPM:2,000 - 20,000

£191.39

Buy NowSupplier stock. Despatch will take 3-5 days longer than our standard delivery time.
Part No: L-OS15550
Item Name: OS Max 50SX-H Ring - Hyper
Brand: OS
See Further Items Recommended for OS-Max-50SX-H-Ring---Hyper
L-OS15612£143.54
Designed to combine maximum power with razor sharp throttle response in the smallest possible crankcase, the 55AX has the same mounting dimensions as the popular 46AX above, but an increase in power to 1.75PS. The dramatic AX fin styling is used for optimum cooling and the rearward angled needle on the carb makes adjustments safer. The new 40K carb and also helps increase the horsepower over the previous 40J model. Perfect for sport, scale and aerobatic models.

SPECIFICATIONS
Bore:23mm (.906")
Capacity:8.93cc (.545 cu.in)
Power Output:1.68hp (1.75 PS) @ 16,000rpm
Practical RPM:2,000 - 17,000

£143.54

Buy NowIn stock for immediate despatch.
Part No: L-OS15612
Item Name: OS O.S. MAX 55AX(40K) w/E-3070 Sil
Brand: OS
L-OS15630£247.94
The max 50SX-H Hyper has established an enviable reputation for power, reliability and ease of use. The Max 55HZ Hyper moves that to a whole new level!Designed primarily with the demands of the 3D pilot in mind, the 55HZ Hyper delivers .61 size performance in a .46 size crankcase. That power comes from the extensive experience that O.S. has gained over many years and working extensively with the worlds top pilots to refine all aspects of the engine without compromise in any area.By using the same mounting layout, you can drop a 55HZ into any model that previously suited the 50SX-H without modification.

SPECIFICATIONS
Bore:23mm (0.91")
Displacement:8.93cc (0.55cu.in)
Power Output:2.1PS @ 17,000rpm
Practical RPM:2,000 - 20,000

£247.94

Buy NowIn stock for immediate despatch.
Part No: L-OS15630
Item Name: OS Max 55HZ - Hyper
Brand: OS
See Further Items Recommended for OS-Max-55HZ---Hyper
L-OS15650£279.90
The latest engine in the 600/50 helicopter class borrows much of its technology from the fabulous Max 91HZ-R, to provide class leading power under the most demanding of 3D manouevres.

The latest DRS system (Demand Regulator System) uses a crankcase pressure tap-off to pressurise the fuel tank via a one way valve. The pressurised fuel is then carfully regulated at the carburettor to provide the optimum mixture no matter what demands are placed on it. This is done by using the negative pressure in the carburettor venturi as part of the regulation system.

The carburettor itself has three mixture controls for low/mid and high speed settings.

SPECIFICATIONS
Bore:23mm (0.91")
Displacement:8.93cc (0.55cu.in)
Power Output:2.1PS @ 17000rpm
Practical RPM:2,000 - 20,000
£324.99

£279.90

Buy NowSupplier stock. Despatch will take 3-5 days longer than our standard delivery time.
Part No: L-OS15650
Item Name: O.S. MAX 55HZ-R
Brand: OS
See Further Items Recommended for O.S.-MAX-55HZ-R
L-OS16512£139.19
A low-cost engine for beginners and sports models, it is reliable and very easy to handle. In both cases the needle valve is mounted at the rear of the motor, so that it can be adjusted safely and at a distance from the spinning propeller. A true lightweight 60 class engine with a surprisingly high performance.

£139.19

This item is currently out of stock.
Email me when availabe!
Part No: L-OS16512
Item Name: OS O.S. MAX 65LA Silv.W/E-4010 Sil.
Brand: OS
L-OS16521£173.99
Designed as a replacement for the long established Max 61FX, the new Max 65AX has all the features of the new AX series, such the same mounting bolt pattern and silencer bolt dimensions, making a direct replacement for most 61 class engines. The real bonus is more power and torque for the same basic external dimensions.

Like all the AX series, cooling has been improved by the use of deep finning on the crankcase and cylinder head combined with the new fin pack shape.

The silencer is effective and a great benefit to flying fields with sensitive noise iossues.

SPECIFICATIONS
Bore:24.0mm (0.945")
Displacement:10.63cc (0.649cu.in)
Power Output:1.75PS @ 16000rpm
Practical RPM:2,500 - 12,000

£173.99

This item is currently out of stock.
Email me when availabe!
Part No: L-OS16521
Item Name: OS O.S. Max 65AX w/E-4010A
Brand: OS
See Further Items Recommended for O.S.-Max-65AX-w/E-4010A
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