451 for a 251

sly the dogman · 07-15-2012, 09:53 AM

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 · 07-16-2012, 03:18 AM

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 · 07-16-2012, 08:24 AM

why don't you trust the 8900 anymore?

sly the dogman · 07-16-2012, 08:54 AM

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 · 07-19-2012, 10:40 PM

Quote:

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 · 07-20-2012, 10:06 AM

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

07-15-2012, 09:53 AM	#1
sly the dogman Registered Users Join Date: May 2009 Location: Across the river from Montreal	451 for a 251 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. __________________ We do accept FB parts for Compass 5.5 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

07-16-2012, 03:18 AM	#2
Andy01 Registered Users Join Date: Apr 2008 Location: Brisbane, Australia	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 __________________ Vario Long Ranger 700e Seahawk 600 - work in progress Atom 500 Trex 450 SA hybrid

07-16-2012, 08:24 AM	#3
leaverus Registered Users Join Date: Aug 2010 Location: Suburbs of Chicago	why don't you trust the 8900 anymore? __________________ 450 Pro: hitec 65hb - outrage os7654t - spartan quark Atom 500: mks 9670a+ - savox 1290mg - ar7200bx v3.0.8 Logo 400: futuba 9650 - futaba bls251 - mini vbar blue v5.3 pro 6HV: savox 1267sg - outrage bl9188 - beastx v3.0.8

07-16-2012, 08:54 AM	#4
sly the dogman Registered Users Thread Starter Join Date: May 2009 Location: Across the river from Montreal	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. __________________ We do accept FB parts for Compass 5.5 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

07-20-2012, 10:06 AM	#6
sly the dogman Registered Users Thread Starter Join Date: May 2009 Location: Across the river from Montreal	Tail grips have been opened up and thoroughly checked and greased, tail rod is free, limits have been set on the tail pitch slider... __________________ We do accept FB parts for Compass 5.5 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

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