Venturi Evo 2 ideal set up

Dazza33123 · February 16, 2016, 10:11:36 PM

Hi everyone
I'm new and in the middle of a falcon Venturi Evo 2 as my first build,
I was hoping someone can help me decide on battery, esc, motor and prop.
I have no idea how long the Venturi 2 can fly for and what's speeds can be expected depending on set up.

Hope someone can help me with this😀

iPeel · February 16, 2016, 10:23:25 PM

I think Rob's out of the 4S power setups, which is a shame as they're a good combo, an O.S. 1200kv motor and EnerG Pro ESC. That's good for a 100MPH setup.

Another option to the O.S. 1200kv is the E-Flite Power 25 BL, 1250KV motor, which is a good efficient motor for the Vent.

Both of those motors will give you 30-45 minutes flight time on a pair of Multistar 5200 4S batteries depending on how fast you fly.

Dazza33123 · February 16, 2016, 10:33:13 PM

Thanks for your reply,
This is all quite new to me, I'm really suprised I could get 100mph!
As I will be learning I was looking for more flight time and perhaps less speed to start with, I have looked at the turnigy motors, are they any good?

iPeel · February 16, 2016, 10:47:24 PM

Quote from: Dazza33123 on February 16, 2016, 10:33:13 PM
Thanks for your reply,
This is all quite new to me, I'm really suprised I could get 100mph!
As I will be learning I was looking for more flight time and perhaps less speed to start with, I have looked at the turnigy motors, are they any good?

Yeah, the SK3 3542 1250Kv is OK, I ran one on a Vent for a while and it was OK for the money, but not great. I now run a Scorpion SII 1190Kv and that rocks.

Brucey · February 16, 2016, 11:54:40 PM

Yup 100 mph straight into a goalpost!

Billy_boy_2010 · February 17, 2016, 12:29:17 AM

Any 4s setup, 500-800W 1100-1400kv would be a good start.

Just keep the weight super low for the maiden and set up dual rates so she survives the launch.

If you load her up with battery a failed launch could smash her up badly!

Dazza33123 · February 17, 2016, 08:19:41 AM

I really hope I don't crash badly on the maiden!
That's good advice running with 1 battery to start and then perhaps adding another when I hopefully get confident, so is it best to go with 4s from the start and forget the 3s system?

iPeel · February 17, 2016, 08:27:10 AM

Quote from: Dazza33123 on February 17, 2016, 08:19:41 AM
I really hope I don't crash badly on the maiden!
That's good advice running with 1 battery to start and then perhaps adding another when I hopefully get confident, so is it best to go with 4s from the start and forget the 3s system?

No, you just need to build it properly and give it a good confident launch. The battery is critical to the CG, so you need to maiden it like you intend to fly it, if you miss out a battery for the maiden or any other weight from the front then you're going to make it tail heavy which is going to fail in a bad way.

Billy_boy_2010 · February 17, 2016, 08:42:19 AM

Quote from: iPeel on February 17, 2016, 08:27:10 AM
No, you just need to build it properly and give it a good confident launch. The battery is critical to the CG, so you need to maiden it like you intend to fly it, if you miss out a battery for the maiden or any other weight from the front then you're going to make it tail heavy which is going to fail in a bad way.

as I peel says- you must have it balancing correctly. but the lighter it is whilst balanced correctly- the easier the launch will be. you may find it balances with one battery right up front- or two batteries further back, for example.

Dazza33123 · February 17, 2016, 08:50:12 AM

Yes I've got you, I will make a balancing jig to check this before first flight, ok so what would you buy if you were me from your experienced knowledge.

Billy_boy_2010 · February 17, 2016, 08:53:49 AM

Quote from: Dazza33123 on February 17, 2016, 08:50:12 AM
Yes I've got you, I will make a balancing jig to check this before first flight, ok so what would you buy if you were me from your experienced knowledge.

If you have no existing kit I would buy the 4s power system from flying wings and some zippy compact 25c 4s batteries. perhaps 3000 or 4000 mah.

but if you're as new and inexperienced as you sound :) I would also buy a flying wings Falcon including the power system- or perhaps a hobby king tek sump and suitable power system- and fly that first so you get more experience of flying a wing. the venturi is quite big and not massively strong so you want to be comfortable with a cheaper lighter smaller wing setup first.

AdamG · February 17, 2016, 10:11:41 AM

Definitely go straight to 4S. There is no advantage in starting out in 3S.

I believe having more power makes a model easier to fly. Launches aren't as hard and you can climb quickly when you need to.

Billy_boy_2010 · February 17, 2016, 10:49:15 PM

Quote from: AdamG on February 17, 2016, 10:11:41 AM
Definitely go straight to 4S. There is no advantage in starting out in 3S.

I believe having more power makes a model easier to fly. Launches aren't as hard and you can climb quickly when you need to.

Very true. And I always launch on full throttle too. Unless someone has some crazy motor setup and a tiny wingspan (a 6s mental speed skyfun/funjet for example)- where the torque will crash the plane- full throttle launches are so much easier imo.

POWERRRRRRR in the excellent words of Jeremy Clarkson.

Dazza33123 · February 18, 2016, 05:36:11 PM

Thanks guys for your input, I will go with the 4s system from flying wings and get some 4s batteries, my servos have now turned up so I can fit them and attempt to laminate the wings! Getting there gradually.

Dazza33123 · February 18, 2016, 05:40:03 PM

Pic of the build so far