RichB
Well-known member
An article from Global Aviation about Mikael Carlson and his Fokker D.VII.
Fokker D.VII
Cheers,
Rich
Fokker D.VII
Cheers,
Rich
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Building and Flying a Fokker D.VII
- Thread starter RichB
- Start date
OH!!!
Nice find Rich. Great details on how the turn buckles connect.
Nice find Rich. Great details on how the turn buckles connect.
Heavens Eagle
Well-known member
Excellent article Rich! Thanks! 
phantom II
Master at Arms
That turnbuckle looks like any normal turnbuckle but I don't understand why it is attached to the bracket with a twisted wire when a clevis bolt would have been used :hmmm
Cheers, Christian B)
Cheers, Christian B)
...thanks for sharing with us :salute
Don't know either, but according to what they wrote it was built to contemporary specifications and standards.
RichB
Well-known member
It seemed to vary between manufacturers, especially German. Some aircraft had the turnbuckle installed as shown in the article photos, some had them attached to the airframe and some had the wire looped thru lugs at each end and connected the ends by a turn buckle creating a double wire. It all depended upon the location, strength, weight and flexibility required for the design.
The RFC used turnbuckles until the introduction of "flying wires". They were streamlined steel rods with threaded ends that had fittings added that mated to fittings in the wing structure. They had wrench flats machined at each end to tighten or loosen them and when correctly tensioned, they were held in place by brass lock nuts.
The wire wrapped around the end is actually a pre-made item, known as a ferrule, with an oval cross section and is just big enough to feed the two wires thru. The free end of the wire is then bent back over the ferrule to secure it in place. If I remember correctly, the Germans usually used 7 wraps per ferrule, the British used 10.
Cheers,
Rich
The RFC used turnbuckles until the introduction of "flying wires". They were streamlined steel rods with threaded ends that had fittings added that mated to fittings in the wing structure. They had wrench flats machined at each end to tighten or loosen them and when correctly tensioned, they were held in place by brass lock nuts.
The wire wrapped around the end is actually a pre-made item, known as a ferrule, with an oval cross section and is just big enough to feed the two wires thru. The free end of the wire is then bent back over the ferrule to secure it in place. If I remember correctly, the Germans usually used 7 wraps per ferrule, the British used 10.
Cheers,
Rich
