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11-04-2013 01:21 AM  5 years ago
Topic Vote0Post 1
Flying Brian

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St. Clairsville, Ohio

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FAI Nitro Motors
What is or was a smooth running engine used for FAI style flying?
"I just don't Listen" "
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11-04-2013 02:07 AM  5 years ago
Lee O'Dell

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Gibsonville, North Carolina

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I use YS 91 SR3C's. Very smooth and plenty of power for me....keep flying it 'till the last part stops moving
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11-04-2013 02:35 AM  5 years ago
fastrc1

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Planet Brooklyn, NY-USA

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YS91SR for me. All day longgggg.RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com
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11-06-2013 09:00 AM  5 years ago
RogerRabbit62

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Thuerigen germany

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I use

OS91 1x
Webra 91 2x

Webra runs smoother from my Feeling.

both are not available longer, so i just replace the interiors.

If you want the engine to run smooth, shim it with 0.2 and use a thicker alu cooling wheel (balanced)
We do not Need the top power anyway to go smooth through the figures.

but this is my Feeling as a beginner
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11-06-2013 03:38 PM  5 years ago
DHiatt

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Huntsville, AL - USA

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F3C engines
Back when we were flying nitro only... it was split between the YS's mentioned previosly and OS 91 HZ and subsiquent HZ-R 3C versions, both with the demand regulator. Can't remember what we shimmed them too... .008 I think.

The OS's ran well on 30% nitro, but I prefered a blend by mixing both Cool Power Competition Heli 30% and 30% LS; 1:1. If you want to save a little on fuel and have an even sweeter hovering model, you can also run 15%/30% "sweet tea" blend for around 22.5% nitro. Still lots of pull in the aeros. Use a little after-run (or ATF) at the end of the day to extend bearing life.

Don't forget muffler choice is very important. You want an F3C style tuned muffler for smooth mid-range hovering. Funtech and Hatori both make fine examples... though they may be difficult to find now.

The OS 105 would also be a good choice depending on the gear ratio you have, I just don't have any experience with them. I switched to electric before they came out!

Daniel
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11-06-2013 03:47 PM  5 years ago
fastrc1

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Planet Brooklyn, NY-USA

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I've made it a point to keep F3C mufflers both Hatori and Funtech in my house readily available. Initially I was running CP30% in the days of the Hirobo n Schluter cups when I ran OS and then went to YS and never looked back. I then went to Wild Cat 30% non Curtis blend and now I have returned to CP again running the YS 20 blend. Noo problems and plenty gumption.

Eaton
RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com
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11-06-2013 08:12 PM  5 years ago
RogerRabbit62

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Thuerigen germany

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i will run two 800N s in F3C (Sport) next year and after Tests went away from the tuned pipe and use the normal dampers from Zimmermann with the GY701 regulator,
It seems that the regulator works better on the damper than on the tuned pipe.

power is enough and the engines are easy to adjust.

might be that helps you in deciding muffler.
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11-07-2013 01:14 PM  5 years ago
Flying Brian

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St. Clairsville, Ohio

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My reasoning for asking is this. I've recently been offered a sound deal on a x-cell Tempest FAI NIB kit, with an additional fully built but un-flown identical chassis. Both being the same.

However, I also currently fly a SG Vibe E12, along with a Slyphide E12. Some people would say after having those 2 models (and they fly very nice), that I will not be happy, with the Tempest FAI addition.

Although I will not ever compete, I do like to fly high end models at the local field with class.

Any commits on this side if the topic. Thanks for the info on the engines as well.

Brian
"I just don't Listen" "
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11-07-2013 01:22 PM  5 years ago
fastrc1

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Planet Brooklyn, NY-USA

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Brian. Many years ago I was a diehard. Miniature dude. I even won the IRCHA North East Regionals with an XCell but now that you have an E12 I would think you're wayyyyy ahead of the curve. The X-Cell is nice but I tend to look @ what the heavy hitters are competing with and it ain't hard to see. Impactions, Hirobos, JR's and a few Raves here n there.

Eaton

PS and you should compete. Come to the NATS n fly with us next year. I started competing after a 17 year layoff in comp and I didn't do to bad for myself. I'm sure you'd like it. Then u can see how these machines really get down.
RIP Roman Pirozek Jr.
Team Futaba USA
Team Kontronik USA
http://flysrw.com
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11-10-2013 06:09 PM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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Brian,

PLEASE stay away from the ol XCell.

It does not hold a candle to your Vibe E12, Sylphide E12, or even your converted Freya electric XSpec.

Even with a perfect engine, you'll be disapointed how it fles compared with to what you currently flies.

ALSO,
Repairing the x-cell Tempest FAI will cost you a fortune, if you can find the parts.

Get a Vibe 90 nitro if you relly want a nitro FAI-ish bird to fly.

Or, Ill GIVE you one of my Hirobo Nitro chasis sitting in the basement.

Santiago
Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-
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11-10-2013 10:42 PM  5 years ago
Flying Brian

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St. Clairsville, Ohio

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I'll keep on the look out for a SG Vibe 90 then. I'm sure there are some good deals still left out there. Thanks

Brian
"I just don't Listen" "
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11-11-2013 12:20 AM  5 years ago
jbjones

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Columbus, Mississippi

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Brian,

Fly what you want, but I have serious issues with what Santiago told you. I respect Santiago very much, but some of what he posted simply isn't true. It is not difficult to get Tempest parts, nor is it cost prohibitive. The costs are going to be mostly in line with other high-end models.

Yes, it has a lot of parts. It's a "builder's kit". The Vibe (I am on record here and elsewhere as absolutely loving my Vibe 50) is a well-designed machine, and likely simpler to build/maintain. It's definitely more modern!

Why you are being told to stay away from this model is beyond me. I love mine, and have recently converted it to FBL. I'm no great pilot, and certainly not on the level of Santiago, but if you can get it cheap, why not!? You're really not going to wad up a contest machine as frequently as you would a 3D machine.

Yes, I'm a MinAir rep. However, I was singing the Tempest's praises long before I was ever a rep for MinAir.

Good luck and happy flying with whatever it is you decide to fly. That's how it's supposed to be anyway!

-Joey
J. B. Jones
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11-11-2013 01:17 AM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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Fly what you want, but I have serious issues with what Santiago told you
Well Joey, too bad!

Brian and I are very close friends and we talk about wants and needs very often. I also get to tune most of birds when we get together.

He's a fan of older MA birds and has a few. But he also wants to step into the AMA/FAI scene in the near future and really loves precision flight. Getting an antique FAI bird for serious practice is not going to help him progress.

I'll tell that to ANYONE ANYDAY.

My OPEN advise to him is just that, an advice from a friend that knows him well, and wants the best for him. Brian is a big boy and makes his own dscisions.

cheers

Santiago
Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-
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11-11-2013 02:39 AM  5 years ago
jbjones

rrVeteran

Columbus, Mississippi

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No worries from me, To each his own. Brian certainly has a good guy in his corner.

Cheers!

-Joey
J. B. Jones
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11-11-2013 06:41 PM  5 years ago
Ace Dude

rrProfessor

USA

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Hi Brian, With your interest in FAI equipment and flying styles I hope you consider coming out and participating in the NATS next year. As a first year participant I had a lot of fun and I'm already looking forward to next year.  
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11-11-2013 06:53 PM  5 years ago
Ace Dude

rrProfessor

USA

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Considering the Tempest has been out of production for several years and he already has a Vibe E12 and Sylphide E12 I don't see the benefit of adding another FAI machine to the hangar.  
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11-11-2013 07:35 PM  5 years ago
RogerRabbit62

rrVeteran

Thuerigen germany

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The Sylphide is a "State of the Art" machine capable to compete with FB direct.

for FBL we do not know where it is heading but a Sylphide would be my choice if FB was to be continued.

I too do not understand the need to go to a older machine if you have a Sylphide.
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11-12-2013 01:43 PM  5 years ago
Flying Brian

rrElite Veteran

St. Clairsville, Ohio

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It was more for Nostalgic reasons.

Thanks for the help.
"I just don't Listen" "
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12-10-2013 05:42 PM  5 years ago
Kristian M

rrNovice

Norway

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120
Has anyone tested YS120 for F3C use?
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12-21-2013 02:02 AM  5 years ago
ymuraki

rrApprentice

Tampa, FL

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Rolando Perez has been trying to make ys120 to work on his Vibe, but he was unable to get consistency from that motor for F3C flying.

Main problem is unable to get taller gear ratio (7.5-7.7:1) to load up the torquefull engine. And the engine does not want run smooth over 16000 rpm. He has new head and new HATORI, but still struggling.
Even my OS105 with 8:0 gear, it still want taller gear as well.

New TT G4.1 has the gear choice, so you maybe able to run good on 120.
Futaba/Hobbico
Morgan Fuel
Peak Aircraft
Kontronik
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