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HomeAircraftHelicopterAerial Photography and Video › Help - Tail rotor servo failure
02-06-2008 12:56 PM  10 years agoPost 1
UHC - PORTUGAL

rrApprentice

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I have used my gy601/9251 in my MIL III for 2 years of regular flights without any problems!

Now i have converted my robbe millenium for AP i have put a bigger boom (1.8) bigger blades and a webra 150 hi gas engine!

In the first flights i have noticed that the tail servo was more hot than normal!

After 3 to 5 flights the tail blocks moments without notice! I came down for hover, more 5 minutes =tail ok, then again the tail servo blocks!

What can be the cause of that? Now i have puted a 9254 atached with the Helicommand (not tested yet)

What can be?

Longer boom (without changing gyro gain)more work of the servo?

More engine vibrations have affected the servo?

I have changed the servo location, and atached it to the boom in a aluminium plate! Vibrations from tail shaft and/or intreferences generated by the tail shaft rotation?

simple servo failure?

Radio intreference?

Gyro or control amp failure?

Reciever failure?

Radio?

Some years ago i had a similar problem with a Kyosho 30 zeal version with a csm icg 360 gyro and a lot of servos killed in the tail!

I have never know the cause and later i have changed all equipement( RX gyro and servo)

And now again! What should i do?

Tank you for your attention

Regards,
José Marques

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