RunRyder RC
 0  Topic Subscribe
WATCH
 1 page 1125 views POST REPLY
Scorpion Power ProModeler
Helicopter
e-
Elec-Helicopters New or Limited Activity
Robbe › Mini-Eolo with a tail motor?
12-18-2003 03:21 PM  13 years agoPost 1
JohnM

Senior Heliman

Providence, RI - USA

My Posts: All  Forum  Topic

I am in the process of building a smaller sized Robbe Eolo and was considering using a tail motor with a prop instead of the stock tail drive. This would allow me to easily experiment with cutting down the length of the boom without modifying the stock tail drive system. I currently have a high performance Eolo and would like to build a light-weight non-3D version that can utilize all the components that I have upgraded on my 3D Eolo.
Has anyone tried this on a Eolo, Corona or similiar sized helicopter? My plan was to try a sp280 motor mounted on a carbon fiber tube boom driving a "Zagi" prop. I have an abundance of these props so I was hoping to use them. I would appreciate any comments or suggestions.
Main rotor drive will be from an Astro 020 3 turn heli motor (2.75 oz.). The cyclic servos will be MPI MX-50HPs (.32 oz ea). I am hoping to use a 2S pack of Tanic 2600 lipos (4 oz.) to power it. The calculated weight savings is significant.
I will try cutting the main blades down probably an inch at a time. The boom will be shortened in the same increments.

PM  EMAIL  GALLERY  Attn:RR
12-18-2003 11:19 PM  13 years agoPost 2
psawya

Key Veteran

Woodinville, WA

My Posts: All  Forum  Topic

sorry..........

PM  EMAIL  GALLERY  Attn:RR
12-29-2003 09:50 PM  13 years agoPost 3
JohnM

Senior Heliman

Providence, RI - USA

My Posts: All  Forum  Topic

Huh? Why are you sorry?

PM  EMAIL  GALLERY  Attn:RR
12-29-2003 10:28 PM  13 years agoPost 4
JohnM

Senior Heliman

Providence, RI - USA

My Posts: All  Forum  Topic

The mini Eolo project is moving along quite well. I installed my new 3 turn Astro 020 motor (Christmas present) and managed to get it flight ready. AUW minus battery pack is 25.2 oz. I hope to remove another ounce or two by trimming down the wires and replacing the wood tail boom with a carbon tube. I cut two inches off of both stock blades and the tail boom is about 14 inches. First test were performed with an 8 cell 2400 pack and a 15 tooth pinion. After burning out one of my CC Pixie 7P controllers, I replaced the tail motor controller with a Wattage 15 amp controller that I picked up at the LHS. I removed 2 cells from the pack and tested it with the 6 cell 2400 nicad pack and an 18 tooth pinion. First successful flights in the garage proved that it is a success. Further testing ouside in the backyard showed that the tail performs good with the installed Futaba 401 HH Gyro. I am now in the process of trimming and cleaning up all the wiring. I will also be working on optimising the tail operation and testing out my lightweight CSM HLG 200 HH gyro. I have a Tanic 2S 2600 pack on order and expect a performance boost between the higher voltage and much lower weight. My AUW goal is 24 to 30 ounces.
Pictures coming soon....

PM  EMAIL  GALLERY  Attn:RR
01-05-2004 09:18 PM  13 years agoPost 5
JohnM

Senior Heliman

Providence, RI - USA

My Posts: All  Forum  Topic

Pictures:


PM  EMAIL  GALLERY  Attn:RR
WATCH
 1 page 1125 views POST REPLY
Scorpion Power ProModeler
Helicopter
e-
Elec-Helicopters New or Limited Activity
Robbe › Mini-Eolo with a tail motor?
 Print TOPIC  Make Suggestion 

 0  Topic Subscribe

Sunday, August 20 - 2:40 pm - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online