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natxopedreira

Fosa Electro Layup Selection

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natxopedreira

Hello

Im going to order a fosa lift electro and im not sure which layup choose:

LIGHT 2300-2400grs rft
Wing sandwich construction:
- glass fabric 17g/m² on surface of wing
- bi-directional carbon fabric 80g/m²
- Herex
- glass fabric 25g/m² in last layer

Wingspar
- kevlar honeycomb/carbon sandwich

F3B 2500grs rtf
Wing sandwich construction:
- glass fabric 17g/m² on surface of wing
- bi-directional carbon fabric 60g/m²
- Rohacell
- bi-directional carbon fabric 60g/m² in last layer

Wingspar
- kevlar honeycomb/carbon sandwich

I will use in on flat with +-1200W, and i want the lightest but resisten to fingers marks, etc... so i can do aerobatics, dives... but still able to thermal

 

Thanks!

 

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satinet

I would ask baudis if the wing is ok for aetos

 If so then i would go for the light layup because you don't need a wing built to do winch launches in 20mph.

 

However i would get the f3b wing if i was going to use it on the slope as well.

The lift has a pretty big wing area though. 

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natxopedreira

Thanks @satinet

I previously asked Pavel and he confirmed that its ok to do dives not as extremely as f3b but can do it, so i assume that also can do aeros.... maybe i have to ask explicit for this.  For me is hard to get an idea of how hard a wing can be knowing the gm of a carbon layer, so thats what why im asking for opinions.

P.D. is a normal fosa one not lift version

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satinet

Weight can come in the spar as well. Some f3b ships have a lot of build up in the spar to stop the wings snapping on the winch.

As a matter of fact the two f3b models I've blown up both went at the bottom of the 'bucket' not actually on the line. I.e the pull up from the dive. And both snapped the wing joiner.

I suspect the the light version is fine for what you want.

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f3fman
2 hours ago, satinet said:

Weight can come in the spar as well. Some f3b ships have a lot of build up in the spar to stop the wings snapping on the winch.

As a matter of fact the two f3b models I've blown up both went at the bottom of the 'bucket' not actually on the line. I.e the pull up from the dive. And both snapped the wing joiner.

I suspect the the light version is fine for what you want.

Presumably not a three piece wing then which is so much easier to distribute the maximum forces across the centre section  

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