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HomeScaleAircraftScale HeliScale Helicopter Main Discussion Docs  A-star/Roban mechs
11-27-2015 03:53 PM  35 months agoPost 1
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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1st flight of an entirely new set of mechanics of which I have little experience. 1st order of business was to do a clutch conversion. I wont do an electric scaler without one. now it sounds like a true turbine at startup.
there are a few other things I will change as it gets more flights logged.

drive a rotary, fly a rotorcraft

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11-28-2015 02:55 AM  35 months agoPost 2
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

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Hey bud, cool set up. What are these mechs going into??
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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11-28-2015 05:10 AM  35 months agoPost 3
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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Thanks Barry, gonna do up an A-star,
first flights went well altho it was just hovering. I wasn't sure I liked the feel of the blades that coe with the kit so I tried some rotortech blades from century and the difference was like night and day. With the stock blades I can definitely see where a stab system would be beneficial but the rotortechs for me has always been pretty solid and so far ive used them on several of my scalers without need for a stab unit. maybe this setup will continue this trend of mine. As for the roban head, theres only a couple of things about the design I am not crazy about so I have installed a century head. I made a follower for it since the roban head automatically phases the head, a feature I think is super cool but I never liked the look the "J" arms had on the rotor system. it takes away form the scale appearance. while not scale for an A-star, the century head offers just a small step closer to the realistic appearance for me. more flights to come this week.

drive a rotary, fly a rotorcraft

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11-30-2015 06:02 PM  35 months agoPost 4
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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With more flights logged on the mechanics, I definitely prefer the feel of the century head and rotortech blades. very solid and predictable in the hover. after a few more flights and a look over of all nuts and bolts I will give it a go in the fuselage. I will have to modify the woodwork to accept the notor that now sits at the bottom of the mechanics with the clutch modification instead of its usual place on top.

drive a rotary, fly a rotorcraft

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11-30-2015 06:42 PM  35 months agoPost 5
Thumper217

rrApprentice

Slidell, LA - USA

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Doc, that looks really good I like the way you did the clutch adaption and made your own follower. How badly will the different motor location cut into the main cabin?

Andrew

Thumper

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11-30-2015 07:40 PM  35 months agoPost 6
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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Thanks Andrew, yea it was definitely the way to go. After sizing things up with the woodwork, it won't be much to cut away and it shouldn't compromise the strength of the structure. I will have pics when I get to that part. Til then its just putting time on it so I can get things dialed in. As for the followers, I've been making my own for a while now. Its not too difficult to do and costs almost nothing plus I can customize it the way it needs to be. BTW your S76 is coming alibf nicely.

drive a rotary, fly a rotorcraft

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11-30-2015 08:04 PM  35 months agoPost 7
ssmith512

rrKey Veteran

Indianapolis, IN USA

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Love the clutch conversion. May I ask how you attached the Roban pinion to the clutch bell? I think I know the answer, but want confirmation from the Master Craftsman himself.

Thanks!

Steve

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11-30-2015 09:56 PM  35 months agoPost 8
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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a mini lathe plus clutch and bell assembly from the xcell series of helis laying in my box o stuff.
I remove the pinion from the bell, and machine a piece of aluminum that fits right back in the bell the way the pinion did. next I bore out the pulley to fit over the machined piece. not shown in the pic is the flanged bearing that goes on top of the assembly so it works and fits like the original clutch bell did. I also machines an adaptor for the clutch to mount to as well as the motor.
it takes a little work but not really difficult to do if you have a lathe.
all my other scale machines use nitro mechanics that I convert to electric, Its so much easier to utilize a clutch that way.

drive a rotary, fly a rotorcraft

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12-01-2015 12:26 AM  35 months agoPost 9
ssmith512

rrKey Veteran

Indianapolis, IN USA

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Thanks for the explanation. You have confirmed that I need a lathe. Wife is not going to be happy! LOL!

Steve

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12-01-2015 12:34 AM  35 months agoPost 10
Mojave

rrElite Veteran

Palos Verdes, Ca. USA

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Nice job Emile, where there's a will there's a way... I don't let anyone tell me that it can't be done.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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12-01-2015 01:23 AM  35 months agoPost 11
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

Steve, ive had this one about 5 yrs and while it isn't anything special or fancy, I don't know how I did my thing with custom stuff without one. I am no machinist, but when you hang around people like Darrell from time to time, you cant help but get learned something lol.
Barry, where theres a machine shop there IS a way

drive a rotary, fly a rotorcraft

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12-01-2015 02:10 AM  35 months agoPost 12
Keygrigger

rrVeteran

Mississauga, Ont. Canada

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Looking good, Emile. I am getting ready for my next build but no promises for the Nats. At least now I know what knocked the 500 out of the sky and that was a bad remote receiver wire. Take care.

Don

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12-01-2015 04:01 AM  35 months agoPost 13
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

Don its good to know what causes accidents so you can prevent it next time. you are one of those guys I know that when you say next project, I just know it will be nice
i look forward to seeing it

drive a rotary, fly a rotorcraft

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12-03-2015 03:02 AM  35 months agoPost 14
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

Well I am racking up some time on the mechanics and getting things dialed in bit by bit. I have noticed that the gears that are at the lower part of the frame that drive the torque tube are a bit noisy but I may be able to adjust the mesh a bit to quiet them down. I hope to do some forward flight with it this weekend and see how things behave upstairs with a little airspeed. The century head and Rotortech blades have been feeling pretty comfortable in the hover while in the backyard, out in some wind at the local field will tell if I can get away without use of a 3 axis gyro. currently I have a futaba GY401 gyro on the tail rotor control.
While the mechs are getting flight time I have been looking over the fuselage and of course I saw a few things I wouldn't mind changing. The sliding door wont open all the way but modifying the sliding piece will fix that. also since the fullsize does not have a post/column between the front and sliding door, I will remove that and use magnets to hold things closed. The exhaust stack though I like the way it looks, seemed to have been pre glued in at an incorrect angle and I will have to try to remove it without damaging it or the opening. wish it was left to the builder to install especially on the unfinished paint version. there are a few other things I will change as I go on but all are not anything major but only to satisfy my taste

drive a rotary, fly a rotorcraft

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12-03-2015 02:15 PM  35 months agoPost 15
Notar

rrKey Veteran

Taxachussetts

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Who makes the fuse Emile, Roban?
Joe

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12-03-2015 03:06 PM  35 months agoPost 16
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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Joe its a Roban fuselage complete with mechanics

drive a rotary, fly a rotorcraft

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12-06-2015 03:23 AM  34 months agoPost 17
206 pilot

rrVeteran

,Long Island,

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Hey Emile stop playing with that euro crap and get that American Bell 407 up and running lol ... P.s I do want to hear a start up on video lol...Rich

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12-06-2015 04:36 AM  34 months agoPost 18
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

Rich you will be happy to know that the 407 is getting closer to the air again. the Astar is flying and flying well so while its getting air time, the 407 is getting front burner time. I will do a spool up video for ya

drive a rotary, fly a rotorcraft

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12-06-2015 04:47 AM  34 months agoPost 19
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

I finally got to do some forward flight with the compactor. even with gusty conditions she flew very well and predictable. The mechanics do seem quieter out in the open as opposed to my enclosed backyard.

drive a rotary, fly a rotorcraft

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12-06-2015 11:04 PM  34 months agoPost 20
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

My Posts: All  Forum  Topic

short video clip of the mechs in flight.

Watch at YouTube

drive a rotary, fly a rotorcraft

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HomeScaleAircraftScale HeliScale Helicopter Main Discussion Docs  A-star/Roban mechs
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