RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 843 views POST REPLY
HomeAircraftHelicopterFuel-Helicopters New or Limited ActivityAvant › E aurora, lessons learned leading to setup modification.
12-30-2010 11:29 AM  7 years agoPost 1
yannick

rrVeteran

South Korea

My Posts: All  Forum  Topic

Hello guys,

I have now about 30 flights on my Eaurora and I think I will modify it as it does not work as I think it should.

This may be of some interest for you and I would also ask you your feedback based on your own experience if any...

Basically I made a mistake when I selected my setup.
- I wanted a HV setup so I went to the griffon regulator on 2S rx 2100 mah.
- I wanted a decent flight time so I went for Voltz 5100 mah (2X6S).
- I did not spend the money on the Jive ESC as I did not need the Bec and I had many good experience with CC (and it is all good so far).

So my setup is:
- JR 8717 HV (metal case) *3 on cyclics.
- Torq HV on tail
- Vbar 5 and custom FBL head
- Radix 710 SB
- Scorpion 4035 - 500
- CC Ice HV 120.
- Voltz 5100 mah 6S *2
- 2100 2s lipo for RX
- Griffon reg + remote switch

- 7 min flight soft 3D, and I put back 3 500 mah on average.

https://rc.runryder.com/t614964p1/

The conclusion in flight is that, althought it is an awsome machine, it is too heavy, and it is nose heavy. I do not have an accurate way to check the weight so I do not know it exactly but I would say about 5 to 5.3 KG.
The weight is not an issue powerwise as this setup is really strong (mutch more than I thought).

The fact is when I analyse the options I think I put the wrong setup.

Now I have worked on the following setup:
- Replace the 5100 mah by 4200 mah batteries (300 Gr total saved on 2 batteries)+ more room in the slots + better GC.
- replace the CC ice 120 by Jive 80 (80 Gr saved and I can use the bec on 6V)
- Remove the RX batterie and the griffon (150 Gr saved)
- Replace the JR HV's by align 610 (60 Gr saved and no HV setup needed anyway)

This is a total weight difference of 600 Gramms and there will be much less wires and mess in the machine, making it safer and simpler.

I was burning 3500 mah in 7 minutes so I guess with 600 Gr less I will burn less so the 4200 will be OK (i do not think the Bec will be a significant change). The machine will be lighter so for the same type of flight it will be easyer on the frame, motor, etc. I may even be able to reduce a bit the revs to have it quieter...

So this is the plan I am working on.

I'll keep you posted on that if of some interest.

Yannick

Is it me or this time the ground was higher than last time??

PM  EMAIL  Attn:RR  Quote
12-30-2010 01:55 PM  7 years agoPost 2
stang281472

rrApprentice

Commack, NY

My Posts: All  Forum  Topic

Although I dont feel like machine feels heavy at all in flight saving weight on an electric 90 cant be a bad thing. When you were running the rx battery where did you have it mounted? I had mine toward the back on the original frame and balanced spot on. With the newer frames I have it in the front but you have much more room to move the bottom main pack for CG. I am running the 4035-500 Thunderpower 6S 5000 45C packs Radix 710 CC ice 80 HV Life 2100 rx pack and 8717 servos and run 14 degress pitch and get 5 min of hard 3D.

On a side note I dont think the align 610's are a good choice because 90% of the ones I have seen dont center well (do heli setups for LHS) and a buddy of mine had them on his aurora and it constantly felt out of trim. Changed to 8917 JR servos and locked in perfect. Hopefully you got a good set of them. Just a heads up.

TOm

PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2010 05:27 AM  7 years agoPost 3
merlin3

rrKey Veteran

dayton, ohio

My Posts: All  Forum  Topic

heres what i do, run 4500 mah packs, and a 1800 life a123 pack for receiver, then just a small step down on tail or an ar7100 receiver. i just charge the receiver pack every 2 to 3 flights.

Justin - Team Horizon, Team Byron
2-700x, Trex 700n, small helis

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
12-31-2010 07:42 PM  7 years agoPost 4
Jason Bell

rrElite Veteran

California

My Posts: All  Forum  Topic

You can do several things to drop the weight down. Can change the 120 Ice to the 80 Ice, I have been running an 80 for 4 months now and 0 issues with cutting out or over amping (I have spiked 205A through it), can switch the servos out for 8917s, or 8717s. I much rather prefer a separate rx pack on a model this size simply because if something fails on the 12s side, you lose the whole model. Obviously switching packs helps alot as well.

Jason

AMain.com
Mikado "V Team"
Xnova Motors
Optipower USA
RCProPlus

PM  EMAIL  GALLERY  Attn:RR  Quote
12-31-2010 09:11 PM  7 years agoPost 5
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

I´ve been an advocate for smaller capacity lipos and a BEC all along. Look at it this way. None of us flying Auroras are newbies, right? Rather we´re all looking for the highest performance machine possible. So why weigh down your e-Aurora with a bunch of heavy stuff in order to get an additional 30 seconds of flight time? There is nothing wrong with 4 minute or even 3 1/2 minute flights if they are extreme and adrenaline pumping.

Keep your Aurora light.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
01-03-2011 03:43 AM  7 years agoPost 6
yannick

rrVeteran

South Korea

My Posts: All  Forum  Topic

Thank you for your feedback guys.

This project will be worked on step by step, So i can see the changes and step back if I do not like it. Fitting a Jive and using the bec will probably be the first one.

On the other hand this setup if flying great as it is but it makes the machine extremely complicated when it could be much more simple.

I just believe that simpler is better and safer.

Is it me or this time the ground was higher than last time??

PM  EMAIL  Attn:RR  Quote
01-03-2011 06:28 PM  7 years agoPost 7
RyanW

rrKey Veteran

Edmond, Oklahoma

My Posts: All  Forum  Topic

The biggest weight savings is going to be the battery packs. I haven't checked out the Voltz packs, but I know the TP packs are considerably lighter than other packs of the same capacity.

Several of us have tried the 5000mAh packs and have gone back to the 4500mAh because of fit, weight and overall balance.

-Ryan
Mikado USA, Kontronik, Opti-Power, MKS Servos

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
01-03-2011 06:32 PM  7 years agoPost 8
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

I love the way the ThunderPower 4400mAh pack fit "like a glove" in the original style frames.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 843 views POST REPLY
HomeAircraftHelicopterFuel-Helicopters New or Limited ActivityAvant › E aurora, lessons learned leading to setup modification.
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Wednesday, June 20 - 4:54 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online