Flying wires on 40% Ultimate

[Dr. Yankem]

Anyone have a better way of attaching the functional flying wires on the Aeroworks and World Models Ultimate? If the wires have the correct tension, then it becomes almost a 2 man operation to attach to the wing. Someone has to pull up on the lower wing and down on the upper wing to get enough slack so the second person can attach the turnbuckles with the hairpins to the wing stuts. Anyway to rig them so they can be installed slack and then tightened on the airframe?

[Dr. Yankem]

Anyone??

[Tired Old Man]

Use an adjustable turn buckle so the tension can be changed to suit the application. Looser for install and detach and tighten for flying. Proctor Enterprises used to make them but I believe they closed up shop. Look at Dubro for them now.

[Dr. Yankem]

	Quote: Originally Posted by Tired Old Man
	Use an adjustable turn buckle so the tension can be changed to suit the application. Looser for install and detach and tighten for flying. Proctor Enterprises used to make them but I believe they closed up shop. Look at Dubro for them now.

I am using the Dubro turnbuckles already and the amount of adjustment available is not enough to allow for easy attachment. Wondering how others flying the big Ultimate are handling it.

[Mithrandir]

I had one of these planes.... keep in mind.. the flying wires don't need to be super tight...if the wing deflects even 1/4 inch, the flying wires begin to take load... more important the wings don't twist as a result of uneven tension in the wires

[ULTIMATE1]

Cable & Cable Accessories

Stainless Steel Cable

Stainless steel cable is commonly used for pull-pull systems in the larger aerobatic and scale model aircraft. The advantages of using stainless steel cable is the high strength, no flexibility, and immune to temperature differences.
Cable is available in seven strand and nineteen strand types. The strand number indicates the number of individual wires twisted together to form the wire. Seven strand is recommended for a pull-pull system that don't require pulleys. If a pulley is required in the linkage then one uses the nineteen strand type.
To determine the correct size pully to use is found by the size of the cable. The minimum size pulley will have a minimum diameter of 25 times the size of the cable. This diameter will allow the cable to wrap 19 strand cable around the pulley and not have any flexibility in the system. For example 1/32" (.032") dia wire will require a minimum pulley diameter of .8" (.032 x 25 = .8) in diameter (3/4" would be ok).
We offer 1/32" diameter in two styles. Seven strand (L127) 1/32" cable is brass plated. This is our most popular cable and suitable for any size R/C model up to 50% in size. The brass plating allows convenient soldering with the use of standard solder. Standard type stainless steel cable must be soldered with special solder such as Stay Brite Silver Solder. The nineteen strand 1/32" cable (L128) is used if a pulley is used or if scale realism is an issue. Brass plated cable is not used in full scale aircraft.
The cable is obviously metalic. The receiver(s) antenna should not be placed close and parallel to the pull-pull cables. This could have some effect to the operation of the radio. Carbon fiber, wire, and aluminum pushrods also requrire the correct positioning of the receiver antenna.

Stainless Steel Cable
Not coated with plastic

ITEM NO.
DESCRIPTON
STRENGTH
QTY.
PKG.
PRICE
L123
1/64" dia. 19 strand
30 lb.
24 ft.
$4.95
L127
1/32" dia. 7 strand brass plated
150 lb.
24 ft.
$4.95
L128
1/32" dia. 19 strand
150 lb.
24 ft.
$4.95
L129
.020" dia. 19 strand
67 lb.
24 ft.
$4.95

Cable Attach Fitting

Our NELSON cable attach fitting is a means to attach stainless steel cable to a ball link or clevis. The NELSON L125 and L125HD cable attach fitting we have sold for several years has been very popular for use in the large aerobatic models. An improved version is now offered, the CAF100. CAF is an abbreviation for Cable Attach Fitting.

The CAF100 Cable Attach fitting easily attaches a 1/32" diameter cable to a steel fitting without the need of soldering. A 4-40 steel stud extends from the steel fitting providing an attachment point for a 4-40 Ball Link or Clevis.

The basic attachment design features a set screw pushing against a 1/16" dia. steel roll pin (spring pin) which intern squeezes around the 1/32" dia. cable. There is no concern of the force of the set screw cutting or effecting the strength of the locking action. The roll pin is locked into the steel fitting because it cannot be pulled through the 1/32" dia hole for the cable that is in end of the steel fitting.
The cable used must not have any plastic coating. If plastic coated cable is used, there is not sufficient clamping action to securely hold the cable into the fitting.

Cutaway drawing shows how the locking action is effected with the squeezing of the roll pin with the cap screw.

Cable Attach Fitting
ITEM NO.
DESCRIPTION
QTY.
PKG.
PRICE
CAF100
Attach fitting for 1/32" dia. cable
4
$5.75
http://www.nelsonhobby.com/cable.html

Revised 3/28/04

[ULTIMATE1]

SCALE FLYING WIRES
True scale “working” streamline wires are available in 6 different sizes.

These scale streamlined flying wires work great for tail plane braces, float cross bracing wires or anywhere else you need scale flying wires.

• Authentic reproduction with streamline cross-section in the following sizes:
  
  
  2.0 x 0.5 mm; 2.4 x 0.6 mm; 3.0 x 0.8 mm; 3.7 x 0.9 mm; 4.2 x 1.0 mm; 4.7 x 1.1 mm
  
  
• The wires are oval formed stainless steel with a rolled thread at both ends (left and right hand) in the following sizes
  
  
  M1.6; M2; M2.5; M3; M3.5 or M4. Sizes are according to wire size.
  
  
• Clevises at both ends with clevis pin, cotter pin and lock nut made from nickel-plated steel. The lock nuts feature a much smaller (scale) hexagon compared to the other commercially available nuts. They look very scale.
• Any desired length from 6” up to 46” can be supplied.
• Wires with the threads M1.6; M2 and M2.5 can only be sold in pairs. A slight difference in length of up to 1/16” (at lengths of about 36”) is possible. It is therefore recommended to find the mean distance of the right and left hand dimensions unless they need to be different lengths. This must be stated when ordering.
• Special quick disconnect end fittings are available for an invisible in wing installations, such as Pitts, Waco etc.

http://www.seacommander.com/flyingwires.asp

[Dr. Yankem]

Thanks Brian. The Nelson Cable system might work, since there's 3/4 ajustment on each fitting, plus the amount of space that the cable goes into the fitting. If 2 fittings are used on each wire, 1 on each side of the wire, plus the space of the cable in the fitting 1 1/2 to 2" slack might be available. But the wire still can't be tightened while connected. At the correct tension I would still need a free hand to push or pull on the wing to get enough slack to attach the clevis.
Also I thought that Nelson was out of business.
Jerry

[RCRandy]

We have one at our local field, and he has a setup that is much faster than hooking up individual clevises. I can't describe it so you would understand, but it basically consisted of small aluminum blocks that have the cables attached, and use one small machine screw to attach to the other end to a mating block. He doesn't have to adjust tension every time he sets it up to fly.

Picture will be worth a 1000 words. Weather doesn't look to be good for flying this weekend, but soon I should see him at the field and be able to get some pics.

[Dr. Yankem]

	Quote: Originally Posted by RCRandy
	We have one at our local field, and he has a setup that is much faster than hooking up individual clevises. I can't describe it so you would understand, but it basically consisted of small aluminum blocks that have the cables attached, and use one small machine screw to attach to the other end to a mating block. He doesn't have to adjust tension every time he sets it up to fly. Picture will be worth a 1000 words. Weather doesn't look to be good for flying this weekend, but soon I should see him at the field and be able to get some pics.

I'd like to see a picture of that