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HomeRC & Power✈️Aircraft🚁HelicopterRadio - Servo - Gyro - Gov - Batt › Talk to me about cyclic servos
03-26-2021 01:20 PM  15 days ago
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Richardmid1

rrProfessor

Leeds, England

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Talk to me about cyclic servos
I'm looking to replace some old Futaba S9252 servos in my flybarred Fury, partly because I don't actually know how old they are (could be 10 years!) and partly because they are quite slow and weak compared to today offerings.

What would be a good replacement without breaking the bank, slightly higher specs but nothing too heavy as I see a lot of servos at 70-80g each! I'd love some Futaba BLS272SV's but they are a bit pricey, next would be BLS451's (I'm still running 4.8v) but again they are a lot more expensive than they used to be! Possibly Savox 1258, good specs for the price but unsure about reliability! I don't want to touch KST (again!) or any other lesser known manufacturers. Such a shame JR's aren't available in the UK!
60% of the time, it works every time!
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03-26-2021 04:19 PM  15 days ago
BarracudaHockey

rrMaster

Jacksonville FL

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I use Torq from Helidirect in all my scale builds nowAndy
AMA 77227
http://www.jaxrc.com
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03-26-2021 05:45 PM  15 days ago
modtron

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Oxford. UK

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JR servos's are still available in the UK ...
https://www.probuild-uk.co.uk/index...ath=26_391_1568

modtron
Oxford UK
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03-26-2021 06:57 PM  15 days ago
EEngineer

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TX

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Everything is pricey nowadays....lol

It just depends on how much you want to spend.
Logo 600SXs, 800XX, TDR IIs
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03-26-2021 08:59 PM  15 days ago
hams

rrApprentice

Ohio

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💎Sustaining Member
Not sure how shipping would be, but take a look at the promodelers. I bought a set for my Logo800 going into it skeptical. Now, they're my first choice. Pricing is awesome and performance is at a minimum equal to any other top servo on the market. I have tried nearly all of them at this point.
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03-27-2021 08:38 AM  14 days ago
EEngineer

rrProfessor

TX

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I would use brushless servos if possible.Logo 600SXs, 800XX, TDR IIs
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03-27-2021 11:47 AM  14 days ago
Ace Dude

rrProfessor

USA

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I'd suggest taking a look a the Xpet SI series. These are HV servos with lots of features and performance at a reasonable price. I'm using them on two helis and quite happy with them. I choose them based on price/performance/features.

https://xpertrcshop.com/xpert-rc-si...shless-servo-2/

https://xpertrcshop.com/
  
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03-31-2021 03:21 PM  10 days ago
Richardmid1

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Leeds, England

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Thanks guys. I'm not sure if the JR's are still made in Japan?

As for the Xpert, I have a set in my SDX, I can't remember which ones they are but they are the 'low voltage 6.6v' ones. So far so good with those.

I guess you could have the best brushless Futaba's or JR's but if you have excessive vibes, binding links and run them at their max voltage they would probably fail early like any others. I think for price vs. performance on lower voltages vs. reliability, the BLS451's are hard to beat. AlignTrex.co.uk are doing 3 for £84 each so I think I'll go for those.
60% of the time, it works every time!
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04-02-2021 07:31 AM  8 days ago
EEngineer

rrProfessor

TX

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Excessive vibes are a different issue entirely.

But, a high quality SBEC is ALWAYS required, to avoid
power issues. And these "backup caps" are just a "bandaid" for
such issues as using a cheapo ESC with a cheapo ESC internal SBEC.

Never "skimp" on the cost of a high quality regulator when you are flying a $2000+ heli. Consider that.
Logo 600SXs, 800XX, TDR IIs
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04-02-2021 03:41 PM  8 days ago
Richardmid1

rrProfessor

Leeds, England

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EEngineer ut, a high quality SBEC is ALWAYS required, to avoid
power issues. And these "backup caps" are just a "bandaid" for
such issues as using a cheapo ESC with a cheapo ESC internal SBEC.

Never "skimp" on the cost of a high quality regulator when you are flying a $2000+ heli. Consider that.
That's why I'm still running an Eneloop 4.8v pack, less to go wrong. I have an LED battery charge indicator on the side of the heli and have tested the pack right down to the last red light and still don't get any brown outs so I'm happy with that.
60% of the time, it works every time!
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