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Home✈️Aircraft🚁Helicoptere-MikadoLogo 690 › 690sx motor and pinion question
03-23-2017 06:40 PM  3 years ago
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big_swede

rrVeteran

Sweden

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690sx motor and pinion question
I wounder if it should be ok to use a Pyro 700 450kv motor with a 13t pinion on this machine?

I fly F3C / big air, nothing crazy.
Using 12s and jive 120hv
FLy around 1850 rpm..

My concerns is that the 700 pyro could be underpowerd, and that the 13t can be striping gears?

I will use heavy ( 240gram ) 700 F3C blades and 100mm tail blades.
I tested 700mm before, and it works with my soft flying..

Is the plastic grips ok with those heavy blades?

CHeers
JR Vibe Ito Edition, JR Nex E8, JR E550, TAGS01 FBL system, JR XG8 radio
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03-23-2017 07:32 PM  3 years ago
EEngineer

rrProfessor

TX

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If you haven't already, also post that question on the VStabi forum.

The mods there are VStabi and Mikado also experts. Another resource for you.

And no offense intended to the VStabi/Mikado experts here on RR.

FWIW
Logo 600SXs, 800XX, TDR IIs
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03-24-2017 03:58 AM  3 years ago
Chris.C

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Hong Kong

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I fly my Logo 600SE V2 in a Uvular for F3C flying as well. A few 690 in our club do the same so I consider 600SE and 690 are similar.

Mine has these set up:
- metal main blade grips(to play safe in 1900+ rpm idle up)
- electric motor: rewind Pyro 700s to competition spec, KV was from 450 to 515, 535 and Scorpion 4035(again rewind to 535KV). All of these motors run with Jive Pro 120 without any problem at 11T pinion.
I set my hovering rpm at less than 1400rpm.

I use CY 690FBL blades before and now I have Hirobo carbon 680mm F3C blades on it. 96mm at the tail.

Flew very well in P and F.
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03-24-2017 05:09 AM  3 years ago
EEngineer

rrProfessor

TX

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What's P & F?Logo 600SXs, 800XX, TDR IIs
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