I was wondering if anyone has more information on the recently introduced IAME X30 SUPER SHIFTER 175cc?
The IAME website doesn’t give a lot of information regarding this unit, no indication of how much extra horsepower or torque it produces compared to its 42hp 125cc sibling.
http://www.itaka.fr/gb/engines/iame-engines/parilla-x30-super-shifter-175-engine,M04.32.html
Conceivably it may have been tuned for a lot of extra torque rather than lots of extra power.
175cc engine are becoming a little more popular. MOTORISEVEN also makes the 45hp L5 MA with a two speed gearbox
http://www.motoriseven.it/index.php?option=com_k2&view=item&id=8:l5-ma-175&Itemid=435&lang=en
I’ve thought for a long time that Rotax should have taken the DD2 down the 175cc route. The DD2 only makes 4 more horsepower than the regular Max, but the outfit weighs 8-10kg extra so the power to weight ratio isn’t all that superior. Consequently if you put the DD2 and regular Max on a track that doesn’t have a really long straight and put them on the same tyres the difference in lap times is small.
In a lot of ways 175cc kart engines all round make a lot of sense. Typically they share the same 54.5mm stroke as the 125cc so can rev highly, but can make a lot more torque thanks to their 40% greater capacity. One doesn’t have to tune them very aggressively at all to get 30-35hp so they would have a much broader spread of power which is a great thing particularly in a non-gearbox kart. I recall in the good old days the 350cc (2 x 175 cc cylinders) Yamaha road race motorcycles were much nicer to ride than the peaky 250cc variants.
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175cc iame x30 super shifter by 'squidly01' << You are here!
