Hasi Tuned ‘Modificato’ .21 Onroad Engine Line

After 2 and a half years of development, testing, and constant comparison with their previous engines, Hasi Tuned, the engine brand fronted by leading Swiss nitro racer Silvio Hächler, has unveiled its dedicated ‘Modificato’ engine line for 1:8 Onroad racing.  The update is not a single model but covers the entire range of ABC and AAC versions in both 7-port and 9-port options.  Starting with their best seller, the 9R Modificato 9 Port AAC engine the cylinder has been completely redesigned, with all ports reconfigured to achieve an even better balance between performance and fuel consumption.  A development made to work properly both with 16% and 25% nitro fuels, without forcing the driver into compromises.  The piston has also been totally redesigned, and most importantly the piston/cylinder matching process is now done with a new methodology, delivering a more consistent and precise performance.  The crankshaft has been revised in its balancing, while keeping the timing unchanged as this base was already proven and effective.  On the cooling head, the graphics have been only minimally updated, but the real change is in the new design.  A new structure that brings two advantages in a 19% weight reduction compared to the previous version, and a noticeable improvement in the warm-up phase, especially on AAC engines, without compromising cooling efficiency even in high temperature conditions.  Finally, the carburetor has been updated as well.  The high-speed needle was already the latest used on the most recent 9R, but Hasi Tuned has revised the sealing, replacing the fuel-contact gasket with a specific nitromethane-resistant material. The first batch of ‘Modificato’ engines will be available mid February.

View more images here