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HPI SF-10W Waterproof Servo

[HPI104105]
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This is a replacement HPI SF-10W Waterproof Servo, and is intended for use with the HPI Savage X 4.6, Firestorm 10T and E-Firestorm Flux vehicles. This servo produces 62.4 oz in of torque (4.5kg-cm), at 6.0 volts.

This product was added to our catalog on May 5, 2011.

hpi guy
Had this servo in my RTR E-firestorm FLUX and could not wait to upgrade it to a HT/ MG. I am not impressed with this servo whatsoever. the flux motiv system may not supply many volts through the BEC which doesn't help, but as it came installed it left a lot to be desired. Kinda slow.. not much torque. Not exactly sure what the specs are on it.. ( around 44oz/in @6v i think i rememeber reading somewhere). but has to be at least .20 transit time... UGH. I know it is just a RTR servo, but i liked my old futaba s3003 better than this thing. it was a little faster. Just sayin...
Ken Mehus
Same happend with my Savage were this servo was used for throttle, just a piece of crap, thats my upinium..
chris manlawe
don't even bother wasting your money on this servo. My Savage X 4.6 steering and braking were controlled by this servo which gave out right after the break-in process.
Robert DeMeo
I must say, this is probably the worst servo you can possibly purchase in the RC market. I can also say that it's not worth the $20 it's listed for; more like $2 if you ask me. In a nitro car, they're okay as a throttle servo, but horrible as a steering servo; they burn out much faster when used for steering. The Futaba servo in my TT01E lasted longer than this poor excuse for a servo. It's definitely not worth the buy; trust me. Just another overpriced HPI item like their one-way bearings.
Cody Benedict
Verified Owner
I bought this in mind for rallying my tb-02, out of the box it worked fine, then about 20-30 minutes of run time the servo slows and loses all torque on the ground, but is fine when not hooked up to steering in the car . Wont be buying one of these servos again.

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