Tillotson has been working on the new carburettors for over three years and the result is sure to excite the Rotax racing world. «Our first goal was to increase overall performance of the Rotax engine, but we also wanted to create a carburettor that is much easier to configure and adjust, compared to the existing carburettor,» noted Andrew Fallon, the Tillotson engineer and a former Irish champion in KF and Rotax, personally supervised the testing and product development.
All that effort shows ... Vroom magazine in their independent tests of the HM-2A recorded lap times of more than 3/10ths of a second per lap faster and hailed the Tillotson carburettor as the first “proper racing carburettor” for Rotax engines.
A real novelty
Here’s what makes the Tillotson carburettor so unique: First, there is a patented fuel system to improve fuel flow to the carburettor. This allows the carburettor to have a smaller venturi and yet dramatically increase lap times. Second, Tillotson has added an easychoke starting system, which allows the engines to start and idle on the first try and that automatically disengages when the pilot steps on the accelerator. Third, the high and low ends of the carburettor are fully adjustable from the outside of the carburettor. There is no longer any need to remove the carburettor and guess at which jets to use. And the carburettor can be quickly adjusted anytime the track conditions change — even during racing. Finally, the Tillotson carburettor eliminates the need for the Mikuni fuel pump, giving racers and mechanics one less thing to worry about. The combination of all these improvements makes racing Rotax more fun for the driver on and off the track.
But Tillotson didn’t stop at just making performance better, it also thought about the way the carburettor looks. Both the HM-2A and the HX-10A have a highly polished body that makes the carburettor look great. And for the racer
who really wants something special, the HM-2A can be custom anodized in a variety of colour options. The HM-2A is already available (see Tillotson-racing.com for details), while the HX-10A will be released in spring 2014.
«These two new products will add a new dimension to Rotax racing and are sure to attract pilots, distributors and national federations. This is the perfect carburettor for clubs and national series looking for a faster carburettor with great ease of use,» commented Charles Demirjian, President of Tillotson.