Bergen R/C Forums

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Gear ratio setups for Electric heli’s


E-Observer EB with Neu motor 1915/2Y (360KV) 90 tooth main, 12 tooth pinion, 36 tooth flanged pulley, 32 tooth no flange/motor pulley, 100 tooth belt.

E-Observer EB with Actro 32-4 motor (415KV) 90 tooth main, 12 tooth pinion, 34 tooth flanged pulley, 25 tooth no flange/motor pulley, 100 tooth belt

E-Observer EB with Hacker A50-14L (300KV) 90 tooth main, 12 tooth pinion, 36 tooth flanged pulley, 32 tooth no flange/motor pulley, 100 tooth belt

E-Observer EB with Plettenburg motor 370-A 90 tooth main, 12 tooth pinion, 40 tooth flanged pulley, 28 tooth no flange/motor pulley, 75 tooth belt

All above configurations are for a 12S setup.



Tazer 700 with Actro 32-3 motor (555KV) 90 tooth main, 12 tooth pinion, 34 tooth flanged pulley, 22 tooth no flange/motor pulley, 75 tooth belt

Tazer 700 with Neu motor 1912/1Y/H (825KV) 90 tooth main, 12 tooth pinion, 40 tooth flanged pulley, 20 tooth no flange/motor pulley, 75 tooth belt.

Tazer 700 with Actro 32-4 motor (415KV) 90 tooth main, 12 tooth pinion, 34 tooth flanged pulley, 34 tooth no flange/motor pulley (8mm bore), 82 tooth belt

All above configurations are for a 10S setup.

Tazer 700 with Scorpion 4035 (500KV) 90 tooth main, 12 tooth pinion, 36 tooth flanged pulley 26 tooth no flange/motor pulley, 82 tooth belt.

Tazer 800 with Plettenburg motor 370-A 90 tooth main, 12 tooth pinion, 40 tooth flanged pulley, 28 tooth no flange/motor pulley, 82 tooth belt

All above configurations are for a 12S setup.

These are subject to change at anytime, given different testing and new improvements such as battery technology can give different results.