E5 gear ratios

[anthony]

I have an E5 running 6s , stock blades(556's) vertigo 550 motor (1175kv)12t pinion cc 120hv , cgy750  and headspeed of 2250.
i'm trying to figure out what tail ratio to use , at the moment I have the 52t tail drive gear and i'm not 100% sure which spur gear it is , what I would like to know is what gear should I be running for this setup , and also what is the recommended headspeed for a 6s setup , I have a 13t pinion I could use if I need a higher headspeed . the reason I ask is because I have a wobble when I jab the elevator and again i'm not sure if its to do with running the wrong headspeed
thank you
Anthony

[anthony]

I counted 13 teeth on the spur gear(twice) I also have a 54t tail gear and 12t spur gear . which should I be using
Anthony

[Dean H]

With that headspeed you are good with the 52T and 13T spur gears (stock setup). The suggested tail speed is between 8,000 - 10,000 RPM.  The 52T and 13T gives you a ratio of 4:1 and a tail speed of 9,000 with your headspeed.

[anthony]

I see what you did there , gear divided by spur = ratio , thank you for the confirmation, I have another question . Is 2250 a good headspeed for a 6s setup or should I be higher or lower
Anthony

[Dean H]

That will depend on your flying style. 2250 will work with the 556 mains. You may want to bump it up if your doing hardcore 3D.

[anthony]

not hard core 3d , more smooth 3d with some bad collective management thrown in for good measure
Anthony

[anthony]

quick theoretical question. my stock e5 has a cc 120 edge hv and a vertigo 1175 kv motor 6s power source , i'm running 2250 with the 12 t pinion , if I wanted to run 2500 headspeed .1. what pinion should I go for ?.2 will the edge 120 cope with 2500 on 6s? I only ask because the cc 130 lv I had on it in the beginning burnt up when I tried to run 2250 with the 13t pinion.
Anthony

[Chris Sexton]

14t pinion

And yes the 120 will do great!


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[anthony]

thank you