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Old 09-14-2004, 05:11 AM   #1
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Default Servos Blue Bird

hey everyone i want to buy a good sevro and i have bee looking on the net and i found this sevro its called a
BLUE BIRD BMS-620MG and the specs are Weight: 51 grams / 1.80 oz.
Size: 40.5 x 20 x 41 mm / 1.60 x 0.78 x 1.61 in.
Torque At 4.8V: 126 oz-in.
Speed At 4.8V: 0.15 sec / 60
Torque At 6.0V: 144 oz-in.
Speed At 6.0V: 0.13 sec / 60
Ball Bearing: Dual
Metal Gears: Yes


Can you please tell me if its a good one and does anyones know about it thanks
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Old 09-14-2004, 05:36 AM   #2
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can some one reply so i can know
THANKS guys
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Old 09-14-2004, 06:34 AM   #3
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Never heard of it before. What's the price? And what else can you get for the same money?

From my experience, I'd stay with servos from well known manufacturers like KO Propo, Futaba, JR, Airtronics... You might be luck with the blue bird, but there's quite a mechanical load on a servo, so quality matter ! And you can't read the quality-factor in any spec. Also compability might be an issue, so at least you should ensure you can retuirn the blue bird, if it's not compatible with your other equipment.
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Old 09-15-2004, 01:54 AM   #4
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hey its AUD about 60 bucks and it has a jr pro po connecter on it
and the other things that i can get its like all standard servo which i done want

thanks man
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Old 12-18-2004, 05:47 AM   #5
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I have been using Futaba 9451 Digital servos and loved them. I have been switching to the Bluebird Servo's as I need new servo's. I currently race with 3 of them and know two other people who use them. We have never had a problem and they seem every bit as good as the high dollar servos. Here is a link to a full line of them plus only .95 S&H.

http://www.slickzero.com/Merchant2/m...gory_Code=Elec
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Old 12-18-2004, 01:21 PM   #6
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I checked out the specs and it looks pretty good. I guess you can't beat the prices too.
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Old 12-18-2004, 03:24 PM   #7
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all i have to say is when it comes to quality, you get what you pay for. but for the price i guess they are worth a shot.
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Old 12-19-2004, 02:26 AM   #8
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hey im StAsIK but i changed niks ok

i bought that servo about 2 days after i posted that and today after about 5-10 race meets ( cant remember) the servo started to not centre and gilthe to the max i changed it to futaba 3003 and the sevro workes fine
beats me i dont know what happened but it lasted not bad for $60AUD
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Old 12-19-2004, 04:41 AM   #9
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These servos are alright when you get a good one but there is a good chance you could get a dud one.
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Old 04-12-2005, 09:48 PM   #10
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Whats the latest on these servos? I checked the link to Slick Zero and every model says "sold out". Will they re-stock?

Has anybody been using them? How do they hold up?
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Old 04-12-2005, 11:11 PM   #11
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yes, they will restock them, i use two of these, i have a 631mg in my mf2 and a 621mg in one of my 414m2, i also have a hitec and an airtronics 357 and can not tell the difference driving the cars.
i am also a firm believer in getting what you pay for, but why should a servo cost three times as much as a standard, just cuz it goes faster... it doesnt cost more to make them, i think blubird made a decent product and priced them were they should be...after all whats in those airtronics golden gears?
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Old 04-13-2005, 10:57 AM   #12
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I have a 621mg in my xray t1. I love it. better specs than comparable airtronics and I can buy 3 for the price of 1 airtronics.

It is fast, durable and centers well. What more could you ask for for $23.
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