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Fast Lad Performance . Ace Hobby . Esprit Model

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Miniature Aircraft Nitro/Gas Helicopters > Swashplate Questions
 
 
Furynut
Heliman
Location: Camas, WA

My Fury 60 Expert is all ready to go, but my swashplate is binding up against the washout pins on the head block. When I select full pitch cyclic the swashplate moves up and at about 15% prior to full stick it binds against the bottom of the washout guide pins. I went back and checked the setup and verified I have 193cm Mainshaft so I am wondering if this is normal?

I was able to stop the binding by lowering the pitch AFR to 41 %, but it seems odd that MA would have you set the AFRs to 60% if the swashplate was going to bind against the pins.

Also, the swashplate is perfectly level at 50% collective, but if I go to the low and high ends the elev cyclic is about .5mm-.75mm low or high respectively. What do I need to adjust or is this acceptable?

Thanks,

Scott
aka Furynut
02-24-2002 Over year old.
 
 
ExtremelyFurious
Senior Heliman
Location: Mobile, AL

Binding

Did you set up the ccpm for 120deg with 60% atv as in the instructions?
Might be your problem. Anyone else?

Scott
02-26-2002 Over year old.
 
 
BladeRunner
Elite Veteran
Location: Ontario Canada. Member of "some sort" s

Tools?

Tools? Tools? I like tools, David do you have a link to that tool supplyer? Thanks----
02-26-2002 Over year old.
 
 
Furynut
Heliman
Location: Camas, WA

Thanks for the advise. I went back and rechecked all rods and bellcranks and verified that the ATVs were 100%. The setup is perfectly symetrical at 50% stick if I put just a slight amount of subtrim in for the JR servo arm problem that Wingtip wrote about. I have the JR8411SAs for my ccpm servos and the heavy duty servo arms were just a little off. I been playing with the pmixes and I think that is going to do the trick, except for the binding which I'm going to call MA about tomorrow. Hopefully it is a simple fix.

One thing is still bugging me, I was always under the impression that the pushrod arms needed to be 90 degrees to the line from the center of the servo to the ball link. I being told by some guys at the club that the servo arm should be 90 degrees to the servo case. If I do that it produces a range of 87-93 degrees from the center of the servo to the ball link to the pushrod. Either way the setup is pretty darn close and as my better half says, "quit being so anal and go fly!"

Thanks again,
Scott
02-27-2002 Over year old.
 
 
ddavison
Veteran
Location: Brownsville, Pennsylvania

Check Min Air's web site. There is a step by step setup for the Fury w/pictures for us who don't like to read

DaveDavison, Miniature Aircraft Field Rep. Spectra,Stratus,Furion, JR 12x 2,4
02-27-2002 Over year old.
 
 
Moore
Senior Heliman
Location: California 93094-0940

Set the SWASH in your radios program to +50% before mechanically setting up your heli. Use 4 arm servo horns and rotate them to find the closest arm to 90*off the servo case. DO NOT use subtrims, level the swashplate mechanically. Set up your heli as per manufacturers directions. Because you started at a 50% swash value, you can now increase this value to achieve maximum travel without binding. Recheck your pitch settings after changing the swash value as your min and max pitch settings will slightly change. If you find it necessary to trim the helicopter to achieve level hover/flight, land and mechanicaly adjust the swashplate linkage to correct the condition.

Remember that with CCPM your goal is to have all servo horns 90* to the servo case when the servos are centered and both t/x sticks are at center/hover. If you absolutely have to use subtrims to achieve perfect centering keep the subtrim values small 3 and under is tollerable if a must 5 or seven is HUGE, dont go there.
02-27-2002 Over year old.
 
 
BladeRunner
Elite Veteran
Location: Ontario Canada. Member of "some sort" s

Tools?

DavidH, thanks for the info and link.
02-27-2002 Over year old.
 
 
ExtremelyFurious
Senior Heliman
Location: Mobile, AL

Servo horns

I guess I'm just lucky, the JR servohorns; two ended heavyduty comes with the 8231 servos, will line up 90 deg. Maybe not in one direction, but if you rotate it 180 deg it does. Maybe you need to just start a new model memory from scratch. It only takes 15 to 20 minutes to do the bench setup. This way, you have not put in any subtrim or atv or anything into the setup. If you have a 10X, email me and we'll walk through it together. Mine was a breeze, I think yours will be also. Double check your rod lengths and servo mounting positions and make sure when you measured the rods, it was the exposed part of the rod between the factory ball links that you measured. In other words the metal that is showing between the ball links on the assembly. anyone else?


Scott
02-27-2002 Over year old.
 
 
dumbthumbflyer
Heliman
Location: highland , california

setup

You need the ma setup tools like the flybar lock and paddle alignment
tool and swash plate tool . Set the control horns at 90 degrees at half throttle stick and lower the swash plate . Leave the ccpm atv's at the 60% setting .
03-01-2002 Over year old.
 
 
hermy21
Heliman
Location: Fishers, IN

Okay I'm a rookie here so I have a question. I have a Fury 60 Basic and am attemping the servo setup for the first time. Is it okay to do it all by eye or is it it better to use levels and other tools to get the bellcranks and servo arms at 90° ?
Rob
03-03-2002 Over year old.
HOMEPAGE  
 
 
Conrod
Veteran
Location: Melbourne, Florida

Had to comment

As David H. said the GW tool aligns to the center of the servo NOT the Servo Case. What difference does the orientation of a servo case make when setting up a heli? None on my machine or any others that I know.
Conrad
03-03-2002 Over year old.
 
 
ExtremelyFurious
Senior Heliman
Location: Mobile, AL

Servo case

Maybe I'm wrong, or just plain missing something. On a Fury, if your control rods are 90 deg to the horn, wouldn't the horn be 90 deg to the case?

Scott
03-03-2002 Over year old.
 
 
Conrod
Veteran
Location: Melbourne, Florida

servo case

Should be for the CCPM and Rudder servo since using the long arms bring the pushrod parallel to the case. I guess I'm trying to make a general point. Look at the throttle servo. How many times has it's location provided you with a 90 deg arm /pushrod to the servo case installation. Usually I have to offset it a spline one way to get the pushrod 90 deg to the arm and center of the servo and 90deg to carb arm and center of barrel. This is because the pushrod is not parallel to the servo case. Check out Ron Lunds page and it describes it in detail.
I am writing this in response to Furynut's second question in hopes that this answers it fully, not to disagree with the servo case scenario in the fury. With the fury on the cyclics and rudder it's done for you Another reason it's an easy to set up heli!!
Conrad
03-03-2002 Over year old.
 
 
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Miniature Aircraft Nitro/Gas Helicopters > Swashplate Questions
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