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HomeContestAircraftHelicopterAerobatic FAI F3C F3N Contest › My "hybrid" rex 800 F3C
02-03-2016 07:02 PM  33 months agoPost 1
big_swede

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Sweden

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Would like to share my "hybrid" trex for the 2016 F3C seasong.

It started as a brand new trex800 F3C.

Current config is:

JR Forza 700 F3C head, with JR F3C Sylphide pitch arms ( to get better resolution ).
RC-Tek 3 blade tail.
Duval canopy
Tailboom painted white by me.

I also hade to change to the DFC chassie sides. Reason is that the JR swash is narrower then the stock Align swash. And with the "push-pull" frames the swash linkage tilted inward and rubbed against the sides.

Blades is EP-ENERGY 745 mm F3C.

It flies great, and sists perfect in the F3C hover maneuvers.
Much much better then the original Align head. :cheers

JR Vibe Ito Edition, JR Nex E8, JR E550, TAGS01 FBL system, JR XG8 radio

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02-12-2016 06:38 PM  33 months agoPost 2
robi-italy

rrNovice

ITALIA

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Fantastic Job. .......please other pics.
Best regards

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02-17-2016 11:05 PM  33 months agoPost 3
chas1025

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TN

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Out of curiosity did you try the Forza 700?

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07-16-2016 03:09 PM  28 months agoPost 4
THX1138

rrElite Veteran

Indianapolis, IN

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Very nice bro.

Lou

Just give me five dudes and two flashbangs...

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12-04-2016 02:51 AM  23 months agoPost 5
iyoy

rrVeteran

Bacolod City, Philippines

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nice!

iyoy

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02-18-2017 10:47 AM  21 months agoPost 6
robi-italy

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ITALIA

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Hi Big_swede, I have a trex 700 V3 F3C have mounted recently the Mini tags and I entered the Sylphide E12 flight data (http://www.jrpropo.co.jp/english/dl...en=d0339&db_flg = eng_dl) you started from this base, or did you work differently?

Best regards

Roberto

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02-18-2017 02:13 PM  21 months agoPost 7
big_swede

rrVeteran

Sweden

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No, the JR Sylphide TAGS file dont work good I think.
To much p-gain and to little hold gain to work well with the trex.
You are much better of to use the stock tags-01 settings, and work you way from there.

//Anders

JR Vibe Ito Edition, JR Nex E8, JR E550, TAGS01 FBL system, JR XG8 radio

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02-18-2017 03:48 PM  21 months agoPost 8
robi-italy

rrNovice

ITALIA

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ok, I understand your thinking, but I have seen that the geometry of the head of the sy e12 is very similar to that of the Trex 700, so I thought it may work equally well. the values of p-gain and hold gain, as affect the flight? and depending on what needs to be changed?

Roberto

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02-18-2017 10:07 PM  21 months agoPost 9
big_swede

rrVeteran

Sweden

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The geometery is not the same, or the damper.
The spindel axel is longer on Sylphide head vs Trex.
The JR Sylphide use other kind of push-pull with other ratio for servo output vs bellcrank output etc.
The blade holder pitch arms has longer distance from the hub to its tip, to increase mechanical pitch resolution.
You simply cant compare the 2 machines.

Best is to start from scratch.
Tags-01 default values is a great start for the trex 700.
Trust me, I been through this, and I always started over with TAGS-01 stock settings.

I can se If I still have my own old setup file for the trex, and send it to you, as a start if you whant

//Anders

JR Vibe Ito Edition, JR Nex E8, JR E550, TAGS01 FBL system, JR XG8 radio

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02-18-2017 11:56 PM  21 months agoPost 10
robi-italy

rrNovice

ITALIA

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Yes please.....Send Pm.

Best regards

Roberto

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