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Old 9th October 2006, 02:15   #1
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Lightbulb Unicorn and Eterno

just had a test drive of the unicorn and the engined sounded like an eterno.I did not draw a conclusion that the engines are the same merely on cubic capacity basis but
checked borexstroke for both
eterno-57.3x57.8[same stroke for both the unicorn and eterno]
unicorn -57x57.8
also unicorn develops 13.3 bhp at 8000 rpm and the eterno develops 8.5 bhp at 6000rpm so if the rev limiter on the eterno be removed it may also develop close to the unicorns output.
however the torque figures are even more close
eterno-10.6nm@4000 rpm
unicorn-12.7nm@5500rpm
what say do the eterno and unicorn share the same engine .this is even more of a fact considering that the unicorn itself shares the basic engine block with the cbz.so does the cbz engine in undertuned form power the eterno.
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Old 10th October 2006, 04:55   #2
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Quote:
Originally Posted by revvedup
just had a test drive of the unicorn and the engined sounded like an eterno.I did not draw a conclusion that the engines are the same merely on cubic capacity basis but
checked borexstroke for both
eterno-57.3x57.8[same stroke for both the unicorn and eterno]
unicorn -57x57.8
also unicorn develops 13.3 bhp at 8000 rpm and the eterno develops 8.5 bhp at 6000rpm so if the rev limiter on the eterno be removed it may also develop close to the unicorns output.
however the torque figures are even more close
eterno-10.6nm@4000 rpm
unicorn-12.7nm@5500rpm
what say do the eterno and unicorn share the same engine .this is even more of a fact considering that the unicorn itself shares the basic engine block with the cbz.so does the cbz engine in undertuned form power the eterno.
mate..all that decides power figures on a 4-stroke is mainly the CAM. The eterno is a scooter but teh uni is a bike...both meant for diff purposes. They might only share the same bore and stoke dimensions but the cam, gearbox, oil flow, clutch, ignition, carb etc are all diff. So u can make your 100cc splendor also pump 15hp by using a high lift cam, high flow ports, bigger valves, exhaust, ignition etc...
The unicorn has the biggest difference from the eterno..thats the valves. The inlet is 30mm and exhaust is 26mm..infact teh biggest among teh 150cc bikes. so with such high flow the power output is also bound to hike.

There is a similar story with the suzuki fiero and TVS spectra..both share the same 57 bore and 57.8 stroke...but the cam,head,carb,ignition,gearbox etc are all diff. both actually evolved from eachother. I'm actually planning on picking a used spectra to plonk the fiero genes on it.

Last edited by fieroid : 10th October 2006 at 04:59.
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