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Old 12-23-2006, 07:30 PM   #1
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Default rx bec voltage ?

ok il wil try explain what im trying to ask. ok i need a rx for a 3pdf and i see hitec has one for it but it says it is 3 volt bec im running a novak c2 with is bec of 6 i belive. so the ? is by the rx only being 3 will that slow down the servo.
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Old 12-24-2006, 08:00 AM   #2
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Default Hmmm.

A little confused by the way you ask, but here goes.

If you look at the specs (torque/speed) for servos it almost always lists 4.8v and 6.0v. The 6.0v rating is faster, and offers more torque. So the answer is yes 3.0v will be slower. At 3.0v I wouldn't be suprised if it is jerky.

Not so sure what the 3pdf is. Why don't you post a link or two. We can look it over and see if your heading in the right direction.
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Old 12-24-2006, 08:15 AM   #3
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ok the esc puts out 6 but the rx only puts out 3. so what would the servo be getting 3 or 6 the radio is a futaba 3pdf . the rx im looking at is a hitec hfs omm. so does a cheaper rx hurt performance on the servo.
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Old 12-24-2006, 08:41 AM   #4
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Default Your OK

Here are the spes on that Rx. The BEC is rated in amps. 3 amps is normal output. The operating voltage.4.8-6.0 is also normal.

HFS-03MM
Type 3 Channel FM Single Conversion
Operating Voltage 4.8 - 6.0 Volts
Current Drain 15 mA. +/- 0.15 mA
Max BEC Output 3 Amps
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Old 12-24-2006, 08:47 AM   #5
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ok great so then my servo will not be slower because of that rx so as long as the esc is 6 volts out right thanks
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Old 12-24-2006, 09:00 AM   #6
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Default

That is not exactly how it works. The ESC has a BEC that produce usually around 6 volts and between 1 and 5 amps of current and this powers the reciever. If the reciever also has a BEC then it will cut the voltage again to the servos. Probably down to 4.8V so yea the servos will be slower.
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Old 12-24-2006, 09:19 AM   #7
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so the servos work off the bec or the volts
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Old 12-24-2006, 09:42 AM   #8
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Default Better Check

Now I'm a little confused also. You could always go to the ask Hitec forum.
Sport10, don't the all have a BEC to some degree?

You guy's have a happy holiday.
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BTW, this is Futaba's definition of the BEC.
BEC (Battery Eliminator Circuitry)
Allows receiver to draw power from a main battery pack, eliminating the need for (and weight of) a receiver battery.
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Old 12-24-2006, 09:52 AM   #9
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ya i think im with you jg i thought the bec was they for like. say for a nitro car i think if you ran that rx in a nitro then the servos would be slower beacuse of you haveing to use the bec but on elec esc that powers the rx right.
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