451 for a 251

[sly the dogman]

Did not do my homework well enough, I bought a Futaba BLS 451 taking it for a tail servo which it is not. I mistakened it for the 251. Will this servo be adequat for the tail of a stretched Atom, hoping it will. Must say that I don't likely trust the 8900 anymore.

[Andy01]

I use a 451 on the tail of my scale Seahawk 600 - it has heaps of torque and works fine for my application (and runs on 6.5V - 2s A123).

I don't know how it would go on a full 3D heli though as it is a bit slower than many current tail servos, but not much - an Align DS520 is 0.09 at 4.8V and a 451 is 0.10 at 6V.

Colin

[leaverus]

why don't you trust the 8900 anymore?

[sly the dogman]

These days the 8900 comes down very hot, even with a step-down. Lowered 6 to 5V,
its a bit better.

And I don't fly hard 3D more like "tourism".

Thanks for the info.

[belcom]

Originally Posted by sly the dogman

These days the 8900 comes down very hot, even with a step-down. Lowered 6 to 5V,
its a bit better.

And I don't fly hard 3D more like "tourism".

Thanks for the info.

I know you've probably checked but could be something binding or tail grip thrust bearings reversed. A tail servo doesn't get hot for no reason. 8900 is plenty for the Atom.

[sly the dogman]

Tail grips have been opened up and thoroughly checked and greased, tail rod is free, limits have been set on the tail pitch slider...