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Hitec HS-77BB user opinions....

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Old 04-29-2004, 01:34 AM
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punkey71
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Default Hitec HS-77BB user opinions....

Hi All.

Anyone with experience with the HiTec HS-77BB Low Profile....please speak up...

I'm about to put them in my kit built CG Ultimate (wings and elevators - 4 in all) and have not been able to find input about them (positive or negative)....

I love this plane...i've spent a lot of time on it.....

...ok...i'll say it....i'm having some anxiety....are they ok for this application....any problems...good stuff to say...?

...little help please....

...make me rest easy...or convince me otherwise... :-)

Harold
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Old 04-29-2004, 09:04 AM
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Default RE: Hitec HS-77BB user opinions....

I have used these servos in the past withuout issues. What size Ultimate are you contemplating the installation of the HS-77?
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Old 04-29-2004, 09:36 AM
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Default RE: Hitec HS-77BB user opinions....

I have used many of them with mixed results. It really depends on the amount of load you will put on them. IMO the motor that is in them will wear out prematurely if you expect to put the rated load on them. I have used them in 60 size sport planes 40 and 60 size fun fly's on elevators, rudders ailerons pretty much you name it. I have never had one fail on the ailerons of a 60 size sport plane but when it gets into the big surfaces of fun flys pretty much every one I have had has had the motor fail after some extended use. The gears are allways fine, it's either the amp board or the motor that fails. SO size does matter If you are talking a 40 -60 size sport ultimate I think your good to go, If your talking a DP 120 or a big fun fly ultimate use a different servo if you want it to last.
Just my experience from owning probably a dozen or so over the last 5 years
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Old 04-30-2004, 01:54 AM
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punkey71
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Default RE: Hitec HS-77BB user opinions....

Thanks for the responses thus far....

They will be in a CG kit built Ultimate (56" WS). Saito 150 for power. 1 servo each lower wing and one servo each elevator half....4 in total. Rudder is a 5645.

I used them due to the depth issue when building the kit. I'd have no problem putting 5645's all the way around if I had the room....It's just too tight.

Thanks,
Harold
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Old 04-30-2004, 08:17 AM
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Default RE: Hitec HS-77BB user opinions....

build hatches for the servos and use standards on there sides, many bipes do that including a GP skybolt I built once
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