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 An RC nitro engine is an engineering marvel.  These tiny nitro engines can scream to speeds in excess of 40,000 RPM!  This is an extremely HIGH RPM for a reciprocating style engine (where a piston goes up and down constantly "stopping" and changing directions).  Just for comparison, a typical V8 engine may run out of steam somewhere around 6000 RPM or so.  Even a typical "high revving" 4 cylinder car engine will usually be limited to around 7500 RPM.  There are exceptions with some racing type automotive engines able to rev up a few thousand RPM higher, but even so it becomes very clear how amazing these little nitro RC engines really are!If you look at the power output of a typical RC nitro engine, you soon begin to really see how amazing these small fire breathing engine really are!  Let's say you have a powerful full size hot rod car with a 350 cubic inch displacement engine that cranks out around 375 HP.  That's a powerful engine that will make a full size car really move!  Here's where it really gets interesting.  If you take the displacement of a typical "big block" nitro RC engine (.21 cubic inches or above), you will find that they will usually produce somewhere between 2 - 3 HP.  If you figure the power to displacement ratio of one of these nitro RC engines, you quickly realize that the power output of these little engines is mind boggling.  For comparison purposes, that hot rodded 350 V8 would not just be pumping out in excess of 300 HP, but it would need to thump out in excess of 3000 HP to match the power to displacement of typical RC nitro engines!

ALIGN 50 Hyper EngineThe Align 50 Hyper engine and the O.S. 50 hyper engine have fully interchangeable parts.

 

 

 

Spec:

This is the Align high performance muffler for 50 size helicopters. It features the highest exhaust volume on the market. The carefully designed expansion chamber, accelerator section and silencer chambers provide for quick mid and high range response. Includes one 41.2x270x70.5mm muffler, one pressure nipple, one exhaust guide, two 3x35mm collar screws, 2 washers and two spacers.

Made in Japan, this ALIGN Hyper engine is built for superior 91 size helicopters. It delivers more horsepower for higher rotor speeds. The new design for the crankcase, provides good support to the crankshaft and ball bearings. Besides good looks and excellent cooling, this engine has a  machined heat sink head which also boosts combustion efficiency for more power stability.Spec:Displacement::14.95ccBore:27.7mmStroke:24.8mmPractical rpm range:2000-16000 rpmOutput:3.4hp/15000rpmWeight:618gAlign 90 High Performance Muffler

To fit 90 size helicopters, according to the strength character of 90 engine the design and features increase the horsepower, fuel-saving, low noise, and the highest air exhaust volume on the market.

Great design and test to three spaces: expansion chamber, accelerated section, silencer chamber, high efficiency and the quick respond of medium speed and high speed, great for 3D flying.

Use for O.S 91SR/HZ & ALIGN 91H/HP engine.