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700 Class Nitro Helicopters 700 Class Nitro Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 01-08-2017, 06:58 PM   #1 (permalink)
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Default ys120 a good engine?
thanks in advance
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Old 01-09-2017, 08:47 AM   #2 (permalink)
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yep
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Old 01-16-2017, 10:18 AM   #3 (permalink)
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The YS 120 SR has a little bit of a vibration issue.
Also, never run it at more than 16,000 RPM - above that point, the vibrations really start to get intense.
Pipes that use a hard mount to the engine were actually cracking where then header joins the barrel.

The YS 120 SR-X is much smoother.
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