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Home✈️Aircraft🚁HelicopterHIROBOHirobo Freya › SSR-VIII or SSZ-V
11-09-2017 11:58 PM  29 months ago
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PaulBowen

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Australia

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SSR-VIII or SSZ-V
Hi y’all

Just looking for opinions and pros and cons regarding converting my SSZ-IV head to an SSZ-V or just replacing it with the SSR-VIII.

I’m a bit over the SSZ-IV as it has an annoying wobble which can’t be reliably tuned out even after 30 hours of flight. I really love the look of the SSR heads and am hesitant to go for the SSZ-V as I’m concerned it will wobble like the IV. I have the flipped mixers and SDX dampers and don’t want to remove the flapping pivot as it defeats the purpose of owning such a nice head in the first place.

Any ideas?
Quest NEO Caliber ZG, Zenoah G260PUH, CGY750, NHP 750, NHP 115.
JR Propo Ergo 30, OS 32SX-H, Edge 550, Edge 90.
Futaba T18SZ
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01-14-2018 07:07 AM  27 months ago
MEMFLIGHT

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St Leonards On Sea UK

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If I had to stick with a flybarred head I would certainly take the SSR head over the SSZ if it was for F3C style flying.

It's difficult to get the SSZ flybar ratio high enough for my tastes. I also think the damping arrangement of the SSR heads is far superior as there is more rubber to depress per degree of spindle deflection.

The SSZ is better for 3D and "tight" damping.

I didn't have any "wobble" issues with either head, but then I ran a 490mm flybar on both.

I think a lot of the wobbling comes down to the low flybar ratio and "tight" damping of the SSZ head. This is fine for 3D style flying and higher head speeds, not so good for low headspeed hovering.

I would recommend fitting the optional white dampers to the SSZ head. I use these on the SSL flybarless heads which have the same centre block arrangement as the SSZ. They are one step softer than the stock black dampers.

Mark
Midland Helicopters, Hirobo, Futaba, Model Technics Fuel
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01-14-2018 10:17 AM  27 months ago
iyoy

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Bacolod City, Philippines

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Which flybar?
I used 490 mm on all the SSZ heads I flew. For my style there is no comparison with SSR. Stick with SSZ. The SSR was designed by Kurokawa exclusively for Hashimoto and even Hashimoto eventually switched over to the SSZ later in his career.
iyoy
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01-14-2018 12:15 PM  27 months ago
PaulBowen

rrKey Veteran

Australia

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I seem to have fixed the wobble now by fitting the 490mm flybar and have also fitted Rotortech 720 mains. It is flying like a totally different helicopter now.

I would still love to own an SSR-8 head at some stage as they are a work of art.
Quest NEO Caliber ZG, Zenoah G260PUH, CGY750, NHP 750, NHP 115.
JR Propo Ergo 30, OS 32SX-H, Edge 550, Edge 90.
Futaba T18SZ
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