O.S. MAX 105HZ

by OS Engines

Normally: £349.99

Web Price: £304.49

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Part Number: L-OS18700
Stock Status: Out Of Stock What's this Mean?
Expected: August 6th

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The biggest, pure helicopter engine that OS have ever made delivers the levels of torque and power demanded by top fliers for both F3C and sport applications.

The 15% increase in capacity offers a big increase over the .91 class engines yet still fits in mounts designed for that class. Modification to the cooling shroud is also unlikely.

The distinctive 'blue anodised' cylinder head distinguishes the 105HZ engines from the 91HZ series yet retains the HZ series styling overall.

General internal design is very similar to the 91HZ series and draws on OS's deep experience in creating the best helicopter engines for all classes.

Advanatges over 120 size heli engines of other makes:

1) Uses same main gear ratio as .91 class engines
2) Vibration levels the same as the 91HZ so does not tend to break heli parts.
3) Easy carburettor adjustment that stays in tune.
4) Crankcase is noticeably cooler
5) More torque in the mid range
6) Velocity stack on carburettor sucks cool, undisturbed air from the fan flow.
7) Longer run time per tank
8) 105HZ with 15% nitro is similar power to a 91HZ with 30% nitro.
Specifications
Weight: 596.2g (21.03oz)
Displacement: 17.17cc (1.048cu.in)
Bore: 29.0mm (1.142")
Stroke: 26.0mm (1.024")
Power Output: 3.7PS @ 15,000rpm
Practical RPM: 2,000 - 16,500rpm
L-OS18700 O.S. MAX 105HZ
L-OS18700 O.S. MAX 105HZL-OS18700 O.S. MAX 105HZL-OS18700 O.S. MAX 105HZL-OS18700 O.S. MAX 105HZL-OS18700 O.S. MAX 105HZ
Part No.Format
L-OS18700
Nitro 2 Stroke

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When a choice of colours is offered for a product, we will endeavor to fulfill your first request, but regret that this is not always possible and colours may vary on these items. Images are for illustration purposes only and whilst provided in good faith, may be incorrect. Prices quoted are valid for online purchases only and may be lower than those advertised in-store. E&OE. Currency conversions are given as an approximation only. All transactions will be processed in GBP. We advise you to research all part numbers before ordering to ensure compatibility with your model.