T-Rex 800 Erstflug

Erstflug nach dem Umbau von 700F3C auf 800.
Dieses mal habe ich das Heck (mechanisch) rein für HH-Mode eingestellt und im Gyro (Futaba GY520) alle Einstellungen belassen.

Im Flug habe ich dann dennoch auf den normal Modus gewechselt, das System getrimmt und via 3x schnellem Wechsel zwischen Normal und HH die neue Mitte im HH Modus übernommen (Performance ist so deutlich besser).

Der GAIN war anfangs zu gering, dann zu hoch.

Fazit: Werde das 3mm Foampad durch ein 2mm Pad ersetzen, den TRIM mechanisch übernehmen und eventuell grössere Heckrotorblätter einsetzen.
So wie er jetzt ist hat das Heck doch zu wenig Druck (vor allem bei diesen eher niedrigen Drehzahlen).

Category:

Science & Technology

Tags:

• T-Rex
• 700
• F3C
• T-Rex 700F3C
• T-Rex 800
• Align
• Helicopter
• Modellhelikopter
• Modellbau
• stretch kit
• Align stretch kit
• T-Rex 800 stretch
• umbau
• T-Rex 800 Umbau
• Futaba
• GY520
• Gyro
• Futaba GY520
• AVCS
• Headinghold
• HH

[derechtemisterbrain]

@INMATECELL11 Close to 800 F3C. For F3C you normally have special blades (airfoil, weight,...) the align 800 blades are not much heavier than the 700F3C blades and they look more like 3D blades. But after two test flights I can tell it is fun. But for competition (will start in the newcomer class - F3C this year) I will de-stretch it again and use real F3C blades from hirobo and rotortech (700 and 720mm).

you are welcome!

[INMATECELL11]

Wow!....cool man!....I just got done with my build...I'm just waiting on battery's...I haven't even flown it yet...but so cool that it's possible to make into an 800....so it would be a trex 800 f3c v2?!! That's awesome! Thanks mate!

[derechtemisterbrain]

@INMATECELL11 one more thing to mention. For the F3C version you also might need bigger tail blades (115mm). When I fly at 1800 rpm and more, everything is fine.I also want to use lower rpms (14xx and 16xx) > there you don't have enough pressure from the original 105mm tail blades. So either stay above 1800 or also change the tail blades.

[derechtemisterbrain]

@INMATECELL11 no problem ;)

Mine is something between v1 and v2 - on thursday I will change the head to v2 and then mostly everything is v2 too.

Yes you can, BUT - for the 800 blades you need the longer tail boom (Align Part No. H80001). This tail includes everything you need (except the 800 blades - their Part No. is: HD800N).

Cheers,

Markus

[INMATECELL11]

Oh....sorry I couldn't tell...blades do look bigger...I have 700 f3c v2...so you say I can make mine a 800 heli?

[derechtemisterbrain]

@INMATECELL11 No it is 800!!!!

It has the longer tail boom and the 800 blades, therefore 800 ;)

[INMATECELL11]

Not 800....

700

700

700

700!