The Irvine engine range has evolved again, but this time there's a difference... The latest engines are now manufactured by O.S. to an Irvine design!! By maintaining the successful design concept of t ......
Although the smallest engine in the O.S. range, the Max 10LA packs quite a punch, whilst producing an amazingly low exhaust note. The highly baffled exhaust system is effective yet does not heavily re ......
Compact yet very powerful, the Max 15LA is the kind of engine that just gets on with the job – minimum fuss and maximum reliability. Packing the class leading features of the LA range into such a sma ......
Sharing the same external dimensions as its 40 size stable mate, the all new Irvine 46 MkIV delivers greater power for not a lot more cost.Inside there is the very latest in ringless piston an ......
Like its larger brothers the 25LA replaced its FP predecessor and offers the kind of reliable performance you would expect from O.S. with all the design advantages of the latest LA series.
The 'safet ......
Stunt version of the popular Max 25LA for many trainer and aerobatic control line models. The carburettor is replaced by a fixed venturi but like all the LA series, the needle valve remains at the bac ......
Whilst the choice of 39 as a capacity might seem strange at first glance, there is in fact a logical reason for it. The 39 was born out of the need to get the maximum power from the smallest possible ......
Physically similar to its smaller brother – the MAX 12CV-X, the new MAX 15CV-X offers a stunning 21% increase in power giving any car a blistering performance without the need for any modification. ......
Physically identical to the popular 40LA but with a 20% increase in power and no discernible increase in weight. If you've built a model that's ended up a little on the heavy side for a 40LA then the ......
Stunt version of the popular Max 46LA for many sport and aerobatic control line models. The carburettor is replaced by a fixed venturi, but like all the LA series, the needle valve remains at the back ......
Based on a new crankcase but featuring most of the tried and tested internals that made the original 36 Ringed engine such a favourite. The Ringed design offers an easier and forgiving setup n ......
The latest 12CV-R is a lesson in how to extract maximum performance from a small, compact package. A larger crankshaft gas passage and optimised port timings create the impressive power. Max 12CV-R ( ......
Many of the latest generation of 1/10th scale cars are better suited to a rear exhaust engine layout, so O.S. have pulled all the stops out to bring you the fabulous, class-leading O.S. Max 12TR(P)-T.
This high performance .18 size engine features twin ballraces for smooth reliable power output and long life. A perfect choice for the 1/10 scale driver who demands more power than a regular .15 size ......
This .18 size engine offers the discerning driver the best combination of value and high performance. Supplied complete with a top quality twin needle slide carburettor and easy to use pull-start unit ......
All the power of the old 'F1' but with lower RPM torque and better throttle response making it perfect for that hot .30 class machine. This engine develops so much power that it is really only ......
