FT Bronco VTOL

tomlogan1

Elite member
Guidance requested: props

I have 2 blade, 3 blade and 4 blade (pictured).

Does it really matter? The back 4 blade on 3s seems to be able to lift the plane all by itself. What would 3 of the 4 bladed props do?

Also, planning to have the rear prop "off" when in forward flight mode. Yes or no?

Thanks.
 

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LitterBug

Techno Nut
Moderator
Guidance requested: props

I have 2 blade, 3 blade and 4 blade (pictured).

Does it really matter? The back 4 blade on 3s seems to be able to lift the plane all by itself. What would 3 of the 4 bladed props do?

Also, planning to have the rear prop "off" when in forward flight mode. Yes or no?

Thanks.
From an efficiency standpoint, fewer blades is better. When flying multirotors FreeStyle FPV, 3 blades "felt" better than 2 blades. 4 blades didn't provide any benefit, just more noise. 9 blades sounded cool but was super inefficient. My ZOHD Altus VTOL came with 3 blade props. I'll start with that and play around later.
 

tomlogan1

Elite member
From an efficiency standpoint, fewer blades is better. When flying multirotors FreeStyle FPV, 3 blades "felt" better than 2 blades. My ZOHD Altus VTOL came with 3 blade props. I'll start with that and play around later.

Thanks, LB. I've had several "twins" over the years but this multi rotor methodology is a new learning curve. Any thoughts on disengaging the rear prop when in forward flight mode? Might save a bit of energy stored in the battery.
 

LitterBug

Techno Nut
Moderator
Thanks, LB. I've had several "twins" over the years but this multi rotor methodology is a new learning curve. Any thoughts on disengaging the rear prop when in forward flight mode? Might save a bit of energy stored in the battery.
FC software should do that for you depending on the flight Mode. I have ArduPilot configured to do that with mine.
 

tomlogan1

Elite member
It's an exercise to take someone's proven design and match it to the "what if i did" thought that plagues us who can't leave well enough alone.
How do you get power from the FC to the motors which were not designed to be on this plane? As they say in Texas: "Drill baby drill!"

Prelude to the "wiring closet". 3 more servos to be installed, too. :eek:
 

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tomlogan1

Elite member
Making progress. All electronics check out. Airframe is complete. FC is programmed. Just need to shoehorn the FC into the fuse. Family health issue will delay maiden for many weeks, but overall we are in good shape.
 

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tomlogan1

Elite member
Orca V2 is eol. If you purchase the Orca V3 and ask they will give you access to download the plans for the V2. You can also buy the models already printed, ready to assemble, but what's the fun in that. This, I hope, will fly well. If not, I can rebuild it as a pusher, its original design. With a 3s and 30 amp esc it appears to be a wickedly fast plane. Thingiverse has plans to make it a VTOL, but, of course, I'm using plans meant for another plane..
Did you ever get the Orca V2? I printed it out but it was too small inside for the flight controller and all the wires. Printing it again at 125%.

Craycle Orca V2
Orca V2 is eol. If you purchase the Orca V3 and ask they will give you access to download the plans for the V2. You can also buy the models already printed, ready to assemble, but what's the fun in that. This, I hope, will fly well. If not, I can rebuild it as a pusher, its original design. With a 3s and 30 amp esc it appears to be a wickedly fast plane. Thingiverse has plans to make it a VTOL, but, of course, I'm using plans meant for another plane..