hi,
looking for replacement for Hitec hs-311 servo
what would be the ideal replacement servo for this price range
are this 'HK15138 Standard Analog Servo'
any good
regards
ashok

The reliability of the HiTec is legendary. Why would you want to change it for HK?

Anyway, these are better

https://hobbyking.com/en_us/hxt-5010-twin-bearing-digital-servo-6-9kg-0-16sec-39-2g.html

https://hobbyking.com/en_us/hobbykingtm-hk15288a-analog-servo-bb-mg-9kg-0-20sec-51g.html

sir
do not want to replace them, am looking for some for a new project
can you guide as to where hitec hs-311 might be available
need 5 pc. servo city shipping is huge,
tower hobby is showing s3003 and hs-311 out of stock
is HXT 5010 as good as hs-311.
regards
ashok

http://shop.sumeetinstruments.com/index.php?route=product/product&product_id=141

http://www.spherehobbies.com/india/r-c-accessories/117-hs-311-servo-standard-universal.html

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sir
not in stock with both, still will contact them and then decide
are HXT 5010 as good as hs-311 they look good, do you have any experience with them,
regards
ashok

Yes, I have about 8 to 10 of 5010. They work fine, no problem since 2 years

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sir
turns out hxt5010 is digital servo and am looking for analog srevo's
could you please advice if HobbyKing HK15138 Standard Analog Servo be a good replacement for hs-311
and if you have any experience with this servo's
regards
ashok

What is your specific application

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sir
i have a new model with 58in span, app. wt. 1000gms
wings are foam power 2212 1400kv pull app 800gms
previously used hs-311 
regards
ashok

Use these, they are fine for your purpose: https://hobbyking.com/en_us/hobbykingtm-hk15148b-digital-servo-2-8kg-0-14sec-19g.html?___store=en_us

I don't see any reason not to use digital, or to add weight by using standard servos

If you must use analogue standard servos, check E Max 3001 available real cheap at rcmumbai.com

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sir
will try, as  rcmumbai is in the neighborhood, 
have pre booked hs-311 on tower hobby
read some place digital servo take lot of current and vibrate a lot
i don't have any so no experience.
regards
ashok

who told you that its a digital servo? its (hs311) an analog servo

sir
i wrote " turns out hxt5010 is digital servo and am looking for analog srevo's "
hxt5010 is digital, hs-311 is analog.
i am looking for hs-311 servos do you know any source where they are currently in stock
regards
ashok

Ashok: Digital do not draw more current and do not vibrate more 

They sometimes have a slight "buzzing sound" which is entirely harmless

Servos have 2 main characteristics:

1. Torque - expressed as Kg-cm. eg a 3 Kg-cm torque means that with a servo wheel of 1 cm (radius) the force (pull or push) exerted will be up to 3 Kgf
2. Speed - usually expressed as time taken to traverse 60 deg. rotation. A lower speed means a faster servo

This is besides the weight/dimensions

Servo selection involves basically a selection of suitable torque - depends on control surface area, speed and weight of the model. Sorry, no easy formula to calculate

Speed selection depends on type of model/flying. A trainer will be happy with regular or slow speed, for precision aerobatics or 3D flying a high speed servo is used

Always check torque & speed when substituting one brand for another

Metal and higher grade plastic gears give longer life to the teeth

sir
thank's
am going to try digital servo's, looks like time to try new technology
hope they work for me
regards
ashok

Quote from: sanjayrai55 on October 07, 2018, 04:40:24 AM
Ashok: Digital do not draw more current and do not vibrate more 

please excuse my english
regards

sir
found hxt5010 on a indian website, you must be knowing that site
rs.536.00 per pc.
regards
ashok

sir
just received message from tower hobby
"cannot ship to India due to restrictions"
regards
ashok

Try rcdhamaka.com they have stocks definitely

Quote from: ashok 2010 on October 07, 2018, 08:45:50 AM

Quote from: sanjayrai55 on October 07, 2018, 04:40:24 AM
Ashok: Digital do not draw more current and do not vibrate more 

please excuse my english
regards

I was not referring to your English!
Just surprised at the statement

Why don't you use the E Max Servos of you want Standard Size? Else use HobbyKing™ HK15148B Digital Servo 2.8kg / 0.14sec / 19g

Quote from: Herdmay1 on October 07, 2018, 02:39:11 PM
Try rcdhamaka.com they have stocks definitely

No they don't have HS 311. Check before writing

Sorry about that, try hs425.. isn't that costly and better torque

sir
@sanjayrai55
would like to get 2pc HXT 5010
And 2pc HK15148B    
where would you recomend i get this from,
Indian website or hobbyking
regards
ashok

I don't know know of any Indian LHS selling these, you could check on Google

Else Hobby King - deliveries usually reach within 2-3 weeks by Regd. Mail