Industry News: Two New Tillotson Carburetors for Rotax Engines
Tillotson – a benchmark in racing carburetors for decades – announces the launch of two new carburetor models for Rotax racing engines. Designated theHM-2A and HX-10A, the new carburetors are not only easy to use but also offer substantially increased performance versus the standard Rotax carburetor. The HM-2A and HX-10A carburetors are the same in overall design except that the HM-2A a fully CNC’d aluminum body while the HX-10A will have a die cast body. Both carburetors can be used on the full range of Rotax MAX engines, from Micro to DD2.
Tillotson has been working on the new carburetors 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 carburetor that is much easier to configure and adjust, compared to the existing carburetor,» 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 carburetor as the ﬁrst “proper racing carburetor” for Rotax engines.
A real novelty
Here’s what makes the Tillotson carburetor so unique: First, there is a patented fuel system to improve fuel ﬂow to the carburetor. This allows the carburetor 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 carburetor are fully adjustable from the outside of the carburetor. There is no longer any need to remove the carburetor and guess at which jets to use. And the carburetor can be quickly adjusted anytime the track conditions change — even during racing. Finally, the Tillotson carburetor 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 carburetor looks. Both the HM-2A and the HX-10A have a highly polished body that makes the carburetor look great. And for the racer who really wants something special, the HM-2A can be custom anodized in a variety of color 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 carburetor for clubs and national series looking for a faster carburetor with great ease of use, commented Charles Demirjian, President of Tillotson.