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Avant Aurora - EFX - FX > Avant & Duralite 4000's

Taipan
Key Veteran
Location: Sydney, Australia

For those who are using this combo or with a similar weighty batt are you finding it rather nose heavy?

I noticed Pete N has the same combo and he's using a CX boomclamp as a horizontal fin holder. Wonder if this is to add weight. Also he has 2 big metal washers inbetween his vert fin and tailcase.

Do you guys think adding weight to the tail puts more stress/load on the tail servo? Also the tail wouldn't be able to start & stop as quickly with extra weight?

02-19-2006 Over year old.

u.k. sailor
Veteran
Location: cambs uk

I am planning to use the fromenco 4800 pack in mine, can you tell me how much your duralite pack weighs? Augusto likes the carbon booms partly because they are black but also because they are light, so that would make this problem worse, curtis i think says it's not an issue any way if the model doesn't balance at the shaft, so how bad is it?
I would say that the heavier the ends of the heli the more inertia there would be and this isn't desirable in 3D whether flips or piro moves.
What else do you have mounted at the front of the heli?

02-19-2006 Over year old.

d3sbo
Senior Heliman
Location: cambridge uk

hi

I am useing a 2s2p thunder power 1320 pack or should i say 2640mha pack and mine is tail heavy with standard boom and useing carbon boom stays but it is also left side heavy with a mp2 on her the hole heli is 5 Kg with all its night gear on.

each flight uses 500 mah

on the front heavy thing i have a Trex with a 6s setup useing 2 1300 3s flight power packs. i can change where i put the packs i like it to be nose heavy rolls and landing pitches up with the tail heavy setup

02-19-2006 Over year old.

u.k. sailor
Veteran
Location: cambs uk

Taipan how much does your canopy weigh, i think i saw somewhere that yours had a nice paint job on it. It is very easy to add a lot of weight with a spray job and quite difficult to get a nice finish with minimal weight gain, just a thought anyway and something which can vary a lot from one model to another.

02-19-2006 Over year old.

Taipan
Key Veteran
Location: Sydney, Australia

It's not my canopy but weighs about 270g, very heavy! My previous canopy was about 220g. Currently using a trimmed down old Freya canopy that weighs 170g. Gonna ask the painter to keep the weight down.

My Duralite is about 220g & has heavy duty wire with Deans to plug into an Arizona reg which weighs about 60g. You can see what I have up front here;

There's a RevMax on the otherside underneath the gyro amp.

Yeah, I have a black metal boom instead of CF. And Mr Carbon boom supports, dunno if they're lighter than the stock ones.

Even with 35g of weight on the tail & holding the heli by the head vertically, the nose always ends up at the bottom. This is with the tank half full.

02-19-2006 Over year old.

u.k. sailor
Veteran
Location: cambs uk

looking at your photo and with what you are using such as a freya canopy. I would guess that even in it's normal configuration and with the tail weight removed, it might not balance even with the battery removed completely

with half a tank of fuel.
Under these circumstances i have to ask if there is any thing in the flying which you are not happy with that balance might have an influence on?

02-19-2006 Over year old.

Nasscar][
Veteran
Location: Newark, Delaware

I currently have one of my Avants setup with the Framoco 4800 relions with the Arizona regulator.

I'm no stranger to the Arizona regulator and the Framoco relions 4800's for I have used them in my past 2 X-Specs and plan on a slow but sure investment for my Evo 90 and remaining Avant's.

Why change a good thing ?

02-19-2006 Over year old.

HOMEPAGE

u.k. sailor
Veteran
Location: cambs uk

why change a good thing?
we are looking at ways to try and get Taipans model to balance at the shaft, at the moment it's nose heavy and he has a duralite pack. what i was saying was that with a standard set up even removing the battery completely it doesn't sound as though it would balance.
Nasscar how does yours balance? I do plan on the fromenco set up but then i don't balance my models

02-20-2006 Over year old.

iachia
Veteran
Location: Milan, Italy

I use a TP 2s2p 4000ma battery with the fromeco Arizona reg. and my Avant is also nose heavy. I plan on getting a carbon fiber canopy to solve the problem.
My canopy now weights 250g painted. The CF canopy is 95g unpainted.
So to be very conservative you'll save at least 100g with the CF canopy.
BTW
Even if the model is nose heavy it doesn't affect my flying at all.
To be honest I just like it as it is.

_____________
Synergy N9

02-20-2006 Over year old.

HOMEPAGE

Augusto
rrAdvertiser
Location: San Diego, CA

If you guys want to use those large packs from fromeco they make a special two pack system for the Avant that goes on the sides where you currently place the 601 and GV-1. You them move those lighter components to the front instead and you can use the carbon tailboom without balancing problems.

Augusto.

Avant Aurora Ultimate

02-20-2006 Over year old.

Taipan
Key Veteran
Location: Sydney, Australia

D'oh! Woulda been handy to know this before buying the big packs. Oh well, that's the name of the game & ta for the info always Augusto.

My Avant was perfectly balanced at half tank with a 4x KR1700AU nicad pack. It weighs about 120g less than the current set-up. However I got fed-up charging every 2 flights and wanted to get more out of my servos & ensure the gyro/tail got a steady voltage.

Flying it is not too bad, however everynow & then I can feel the nose is heavy. I tested the ccpm set-up by doing fast climb-outs & descents. Climb-outs are ok but descents the heli pitches foward a bit. Not sure if this is due to being nose heavy or if I need to reduce the servo ATV on that end.

A good thing about being nose heavy is autos are easier than ever! It's now much easier to get forward speed in F3C type 180degree autos.

Only had 7 flights with this new set-up. Broken FX frames converted to EFX. New Hatori 937, 9451s, GY611 and batt/reg of course.

Not used to being nose heavy, will try it some more.

02-20-2006 Over year old.

Augusto
rrAdvertiser
Location: San Diego, CA

If you have the pack you can do it yourself. Simply divide the pack in two, connect a cable long enough to go from one side of the frame to the other and then use shrink tubbing to repack each pack of two cells. That's how we did it in a couple of the duralite packs and it works perfectly.

Augusto.

Avant Aurora Ultimate

02-20-2006 Over year old.

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Avant Aurora - EFX - FX > Avant & Duralite 4000's

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