New Futaba BLS152 bruhsless power servo

[Wilga]

I plan to buy new servos

Who has already used the new Futaba BLS152 servos and with which result ?

Can you give an opinion between the classic JR 8711 and the new Futaba BLS152 ?

Thank you.

Eric

[Luispain]

subscribed, I'd also like to know opinions of the BLS152... just wondering if Futaba geartrains last longer than JR ones...

[Bulldog9]

I've used several of new Futaba BLS servos including the BLS152 servos and am really impressed. The first thing you will notice is they don't buzz like other digital brushed motor servos. I'm not an EE major, however, the theory of the brushless motor and the magnets that are used is they don't "fade in power" as the motor gets hot from use. The BLS152s that I'm using are very quick and don't fade under heavy load. If you get your finger caught in the the hinge line it will cut them off. All of this is the good news. The bad news is they are pricey.

[SleepyC]

I want to try these servos badly.
Soon... very soon...

[Luispain]

	Quote: Originally Posted by Bulldog9
	I've used several of new Futaba BLS servos including the BLS152 servos and am really impressed. The first thing you will notice is they don't buzz like other digital brushed motor servos. I'm not an EE major, however, the theory of the brushless motor and the magnets that are used is they don't "fade in power" as the motor gets hot from use. The BLS152s that I'm using are very quick and don't fade under heavy load. If you get your finger caught in the the hinge line it will cut them off. All of this is the good news. The bad news is they are pricey.

Hi bulldog9!! Thanks for your opinion. What about the geartrain life?? Do they get sloppy fast like JR do??

Thanks again to share your experience!

[Bulldog9]

If used the BLS252s for a whole summer and the gear train is still very tight. I only used the BLS152s for about 2 months before the weather got bad so I don't have any long term data to share with you. After two mount the BLS152s are like new.

[DA2000]

I just got some for a new build. They are the best servo's I've ever messed with out of the box. We'll see how they hold up. My 9157's have been really good after 300 flights.

[Baj]

Huba huba, was just wondering the other day when will they have brushless motors in the servos.

[Baj]

	Quote: Originally Posted by DA2000
	I just got some for a new build. They are the best servo's I've ever messed with out of the box. We'll see how they hold up. My 9157's have been really good after 300 flights.

Submit to the power of the pants LOL

I do I do LOL

[DA2000]

[Wilga]

	Quote: Originally Posted by Luispain
	subscribed, I'd also like to know opinions of the BLS152... just wondering if Futaba geartrains last longer than JR ones...

Thank you Luis for having revived the thread

[TX Newbee]

Does anyone know if they are good to use unregulated A123 batteries on?
Thanks,
Damon

[DA2000]

	Quote: Originally Posted by TX Newbee
	Does anyone know if they are good to use unregulated A123 batteries on? Thanks, Damon

Yes.

Damon, did you used to live in Dallas?

[TX Newbee]

	Quote: Originally Posted by DA2000
	Yes. Damon, did you used to live in Dallas?

Awesome thanks! I wanted to try some of these out but was told you had to use a regulator to keep them at 6 volts.

Actually lived in Ft. Worth and Arlington.

Do you have any idea what the real world tests are like a basic Fish Scale test like TBM uses.

http://www.troybuiltmodels.com/categ...00/Servos.html

According to their testing

• JR 8711 which is rated by the manufacture to have 403 in/oz at 6 volts with their fish scale test actually had 373 in/oz at 6V and 421 in/oz at 7.2V
• Hitec 7955TG which is rated by the manufacture to have 333 in/oz at 6 volts. With their fish scale test actually had 288 in/oz at 7.2V they did not test at 6 volts.

I was curious to see how the BLS152 did in comparison with these other servos. As it seems manufacture posted specs are relative.

Thanks,
Damon

[DA2000]

It all comes down to the method the manufacturer uses to obtain their specs. In the past, Futaba's have always done what the box said. I'll let somebody who's in the know take that any further.

I've been really happy with the 9156 and 9157's. I've got some BLS152's waiting on me to build a plane. I've messed with them on the bench and they seem really good.