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HomeAircraftHelicopterAerobatic FAI F3C F3N Contest › Freya Evo for F3C?
10-10-2005 04:35 PM  12 years agoPost 1
Harris

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Cyprus

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Hi guys,

Has anyone used the new Hirobo Freya Evolution 90 for F3C style of flying? Any experience with setups etc? How does it hover in strong winds?

Thanks,

Harris

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11-07-2005 03:16 PM  12 years agoPost 2
happyfly

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HK

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I do also want to know too.
I have just modified the SSR7 to the latest underneath flybar set up. everything are the same, chassis, engine, blades etc....i tend to fly the SSR7 more so far.
The rpm width of modified head is very narrow, more or less will make my ship wobbling either nose up and down or side swinging.
up stair speed is less than before and the hovering has no significant improvement I can see.
Any tips to share?

Cheers, Happyfly

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12-01-2005 05:20 AM  12 years agoPost 3
iyoy

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Bacolod City, Philippines

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I just got back from the Hirobo Cub in China. Mr Kogo, Hirobo Flight Staff from Japan did several demos of the new 2006 F3C Schedule A and B using an Evo 90 and I can tell you this, he flies it very well. Right after flying F3C, he switches main blades from the semi symmetrical to full symmetrical and flies an exciting 3D routine. I was told that he just uses idle up 3 for the 3D as well as for some of the F3C maneuvers such as the flipping pullback.

Two of my companions in the contest took 1st and 3rd respectively, botrh using standard Freya EXII and Eagle WC3 but with the modified underslung flybar heads. I tried this setup and I can tell you this: Hovering is a lot easier, stable and predictable. The guy who took 1st, Alvin Alcantara did mention that they could not immediately find the proper setup for the aeros but Mr. Kurokawa of Black Hobbies in Japan showed them the proper 'offset' of the swash timing and now they have the setup down pat. Flies very fast and 'on rails'.

I'm currently flying a stock EXII with the SSR VII but I've decided to go underslung flybar as well.

iyoy

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12-01-2005 06:25 AM  12 years agoPost 4
happyfly

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HK

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First of all, congratulations on your team to have good result in last Sunday Hirobo Cup. I regret that i didn't attend this event due to the time crush with my original busy schedule.

Prehaps I get used to SSR7 and 6 for a while so I can't immediately feel good with the latest EVO head. I recently adjusted the ARF from 100 to 120% for the swashplate control for hovering and it seems a bit better. I will try to use longer flybar too. Currently I am using the shortest one 470mm something.

By the way, it is highly appreciated that if you could share some finding on setup of the latest EVO head here. So that we can fly it better.
Thanks!

Cheers, Happyfly

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12-01-2005 10:09 AM  12 years agoPost 5
iyoy

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Bacolod City, Philippines

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Okay, I will let you know once I try mine next week. Alvin, the guy who took 1st in China last weekend is doing the setup for me. He was trained by Mr. Kurokawa for setup. I know he uses a stabilizer bar longer than the stock SSR-VII.

iyoy

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12-01-2005 09:02 PM  12 years agoPost 6
Harris

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Cyprus

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What is this flybar modification? Could you please give more info or some links?

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12-01-2005 10:13 PM  12 years agoPost 7
iyoy

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Bacolod City, Philippines

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The flybar mod simply transfers your flybar from on top of the yoke to the bottom. If your rotor head is one of those with the flybar on top of the yoke such as the SSR-VII (Hirobo Eagle 3WC, Eagle Freya EXII), you may convert it so the flybar goes below the yoke, same as the FFZ-III on the Evo 90, using parts from the Evo 90.

You still retain the main mast, yoke, blade grips, mixing arm and some others but borrow some of the FFZ-III parts such as seesaw, spindle,stabilizer control arm, center hub, stop plate and a few others. You also change the pushrods because the respective lengths will differ.

iyoy

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12-02-2005 12:50 AM  12 years agoPost 8
yapjy

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Singapore

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I'm flying FFZ-2 now and a flying buddy kindly lend me his FFZ-3 (Freya Evo head) to try out.

Will report the findings here soon.

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12-04-2005 03:43 AM  12 years agoPost 9
yapjy

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Singapore

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I tried out the FFZ-3 yesterday for a flight before a fuel filter problem grounded the heli.

Hovering wise, the FFZ-3 is more sensitive on the collective pitch. I was using the stock flybar length (I think 550mm) and the cyclics are too powerful for more liking. I believe a shorter flybar and lower hovering rpm will improve the performance.

Wow...FFZ-3 shines in the aerobatics! Vertical penetration is outstanding. I think it's on par with the SSR-7. The roll reversal was also done effortlessly. It's faster than FFZ-2 on forward flight but I think the SSR-7 is slightly faster.

If SSR-7 is a 100 marks, I think FFZ-3 is about 85 and the FFZ-2 is about 60.

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12-04-2005 09:29 PM  12 years agoPost 10
RRLL

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Israel

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yapjy,
Thanks for the update.
Which blades were you flying with both heads?

Ron

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12-05-2005 12:07 AM  12 years agoPost 11
yapjy

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Singapore

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I used SAB 0205 FAI main blades.

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12-19-2005 02:31 PM  12 years agoPost 12
yapjy

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Singapore

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Some updates to the FFZ-3 rotorhead that I put on my plain Freya.

I liked it so much that I bought it from my flying buddy.
I have only the lead weight in the stock Hirobo paddles and it's a good compromise between hovering stability and aerobatics.

Hovering rpm is about 1550 and aerobatics rpm is 1850.

I'm using a shorter 490mm flybar now.

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12-26-2005 10:02 AM  12 years agoPost 13
happyfly

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HK

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Just extend the flybar from 480 to 555 for trial. hovering response around the center is better to me. 480-490 is fine for SSR7 and I do think it is not good to me for FFZ3 because the cyclic input is not directly reflected on the ship using short flybar, so over control problem happened to me before. 555 is more suitable for my taste and the cyclic response more follows to the sticks around the center so I can reduce the ARF from previous 120 to 90. Upstiar seems better as I feel the loading during roll is little bit reduced. Just feel, not so sure. You may have a trail and share your view please. having not been flown for so long time, my hope is to refine my ship for flying again in 2006 using the new FFZ3 and OS91 SZ. wish me luck! merry christmas

Cheers, Happyfly

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01-01-2006 01:33 AM  12 years agoPost 14
pepenk

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Jakarta, Indonesia

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Hai iyoy,

I am interested in what you call swash timing offset. I will building Freya R/F replica which has SSZ III rotor head. What is swash timing offset all about and how to set it?

Thanx and regards,
Ferri

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01-03-2006 04:33 PM  12 years agoPost 15
iyoy

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Bacolod City, Philippines

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Hi Pepenk,

Look down on your swashplate from above the heli. Align the stabilizer bar such that it is parallel to the longitudinal axis of the heli (aligned with the tail boom). When there is no offset, the four ball links of the inner swashplate is aligned with the four points of the outer swash plate (there are four points on the outer but actually only three have ball links). The proper offset for this heli is with the stabilizer still aligned, loosen the set screws on the radius block and turn the inner swash about 1mm counterclockwise with respect to the outer swash then retighten the radius block. The effect of this is that when you align the balls on the inner and outer swash, the stabilizer paddles and the yoke/ blade grips are now 'advanced' by a few degrees. You now have the proper swash offset timing.

Hope this helps.

iyoy

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01-04-2006 02:15 PM  12 years agoPost 16
bald eagle

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detroit michigan

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VERY INTERESTING THAT IS NOT MENTIONED IN THE MANUAL BUT EVERY TIME I LOOK AT THE MANUAL I FIND NEW STUFF ALL THE TIME

THANKS JEFF

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01-05-2006 04:15 AM  12 years agoPost 17
stules

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Japan

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Iyoy
Thanks for sharing that.
What is the handling difference between 0 offset and proper offset of 1mm?
Regards Stuart

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01-06-2006 12:45 AM  12 years agoPost 18
pepenk

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Jakarta, Indonesia

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Thanks iyoy.
Mr Kurokawa is the man.(met him in Noto 2003)
Is this advanced timing only for SSR VII/SSZ III or also should be done for SSR VI/SSZ II.

Regards,
Ferri
INA 0083

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01-06-2006 01:48 PM  12 years agoPost 19
iyoy

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Bacolod City, Philippines

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Pepenk,

No offset for the SSRVII! This is exclusively for the FFZIII, SSZIII and the 'Rudi' head which is essentially an SSRVII converted to underslung flybar using some parts (center hub, seesaw, some bushings)from the FFZIII.

iyoy

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01-06-2006 05:03 PM  12 years agoPost 20
pepenk

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Jakarta, Indonesia

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Since I have 'Rudi' head, I think I will try this advanced phase and see what happened.

THX,
Ferri Iriandi
INA 0083

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