Hi - I'm looking to buy at least 18 standard size servos for a hexapod I'm
working on. Does anyone know of any good sources for getting them fairly
cheap? I've searched through this newsgroup on google - but haven't found
too many good prices. I was hoping to spend about $10 each or so - but so
far the best I've been able to find is about $15. Or are servos in that
price range now worth bothering with? Thanks,
In reply to both:
ServoCity.com would be my recommendation as a low-cost outlet, but I
don't recommend the HS-311s for this application. They don't have any
bushing at all, and while they're fine for general purpose, IMO they're
not suitable for an 18-servo hexapod. In a 3DOF leg, the six "hip"
servos supporting the most weight receive a lot of wear and tear.
In fact, I don't recommend any of the lowest-priced Hitec or Futaba
servos for this application. Both companies have "cheapened" their
entry-level servos and made them lighter weight, and without metal
bearings or bushings.
In that price range I'd recommend instead the GWS S03, which comes in a
variety of torques. Example: the S03N (normal) has 56 oz-in at 6 volts,
and has Oilite top and bottom bushings. ServoCity doesn't sell this
brand, but others do, and they're right at the $10 price point the OP is
looking for. Try Balsa Products at www.balsapr.com or Junun.org. The
ball bearing versions are a little more, and might be worth it.
Author: Constructing Robot Bases (Forthcoming)
Robot Builder's Sourcebook, Robot Builder's Bonanza
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