Scobie,
You are right about the voltage on the HS50s. According to the Hitec
website, http://www.hitecrcd.com/servos/hs50.html they have changed the
spec to allow 6v. On the box that my HS50s came in, it says:
HS-50 Feather
AT 4.8Volt (4 cell only)
SPEED: 0.09 sec/60deg
TORQUE:0.6kg/cm(8.4oz/in)
These things are too expensive to fry so I remembered the voltage
restriction they noted. I'm glad you pointed the new spec out to me. I
built my Lil Bird fuse custom for camera batteries, and was ticked when I
thought I had to use a Nicad pack after all that extra work!
merry merry
Rich
At 12:33 AM 12/24/1999 -0800, you wrote:
>Rich, of lithiums camera cells, you wrote:
>
>>Some typical model
>> numbers are "CR123" (one cell), and 223 (double cell pack in a plastic
>> housing)....
>
>....> Ultra micro
>> servos like HS-50 CANNOT take the 6v of two cells though, 4.8v max! The
>> lower the voltage to the servos, the longer flights you'll have.
>
>
>I have not yet used HS-50's with the 123 size two-cell lithium pack, but I
>have at least
>50-60 hours of flight time on a pair of HS-50's using a two cell 6V lithium
>pack made from two "CR2" cells which are only slightly smaller..... so far
>so good. I also have a pal that has been flying his herring a lot longer
>than I have on the same type of 6V packs with no troubles. And I also have
>abunch of hours with the same type of battery (Lithium CR2 two-pack)
>powering a pair of M-30 servos which are another sub-micro (similar if not
>the same as CS-10's), within a gram of the HS-50. So far, no issues except
>really snappy servo performance and flight after flight unlimited by battery
>duration.
>
>I'd be curious to know where your emphatic statement against pairing lith6V
>with HS-50's came from. Have you burnt up some HS-50's somehow with these
>cells? I'm concerned because I love my setup and make a habit of
>recommending it to folks, so I'd like to know I'm giving them good advice. I
>admit to being pretty darn pro-lithium at this point, because of all my
>great experiences with them, but I don't mind a caveat if you've got one.
>
>I remember when I did my first research on using these, the concern of too
>much voltage came up, but a fairly heavy source finally told me that I MIGHT
>get less overall life out of my HS-50's running them on 6V, but only by a
>small percentage, and I'd be hard pressed to notice a practical difference.
>
>If you have arguments or anecdotes against, I'd appreciate hearing them.
>Thanks for any insight.
>
>Lift,
>Scobie in Seattle
>
>PS Might be slow on replies for a while, I'm out of town for a week as of
>tomorrow a.m.
>
>
>
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