Society of Robots - Robot Forum

Mechanics and Construction => Mechanics and Construction => Topic started by: KambeiX on July 12, 2007, 10:47:08 AM

Title: Need Servo Advice
Post by: KambeiX on July 12, 2007, 10:47:08 AM
For continuous rotation I always use HS-311 since they are cheap and good quality, but now I need them for a competition where strength and speed will be determining factors, so which ones you recommend?

They must be easy to modify or already modified and have better torque/speed than hs-311 and also "cheap" (of course, they will be more expensive than hs-311 but I don't want to buy $100 digital servos)

I was thinking of HS-225MG

http://www.servocity.com/html/hs-225mg_mighty_mini.html

Title: Re: Need Servo Advice
Post by: ed1380 on July 12, 2007, 01:04:03 PM
why not gearhead motors? or is acuracy required?
Title: Re: Need Servo Advice
Post by: KambeiX on July 12, 2007, 01:14:03 PM
because they have to be waterproof and I don't have time to waterproof a gearhead motor.

Title: Re: Need Servo Advice
Post by: beginner435 on July 12, 2007, 02:04:56 PM
this is a website that i used to modify my first (and only :P) servo it worked on once i followed the instructions on the first one properly (you have to follow EVERY one) then mi other ones worked fine

the website is http://www.acroname.com/robotics/info/PPRK/assembly/assm1_2.html
Title: Re: Need Servo Advice
Post by: KambeiX on July 12, 2007, 02:19:04 PM
this is a website that i used to modify my first (and only :P) servo it worked on once i followed the instructions on the first one properly (you have to follow EVERY one) then mi other ones worked fine

the website is http://www.acroname.com/robotics/info/PPRK/assembly/assm1_2.html

Thanks for the tip but I already know how to modify servos. The thing I need are stronger/faster servos that arenĀ“t too expensive and can be modified without much difficulty (some servos are very hard to modify).
Title: Re: Need Servo Advice
Post by: Admin on July 17, 2007, 07:21:28 PM
I own four HS-225MG's. They are a bit expensive, but I really like them :)

Most of my robots use them, including my Stampy robot.
Title: Re: Need Servo Advice
Post by: KambeiX on July 17, 2007, 07:22:50 PM
Using same weight and same wheel ratio, how fast they are compared to hs-311?