Fokker Rudder hinges

KiwiResin · 26 January 2014, 09:35 PM

per the discussion on the Dr1 rudder hinges, I have atatched pics of the ones made by CAMS at Omaka and fitted (as far as I am aware) to all Triplanes in NZ as well as the E.V project

Note if you need a set of these you can contact Tony at CAMS directly, or drop me a line and i will pass on requirements.
Interested people will have to carefully measure the critical dimensions, rudder tube size, sternpost width etc etc in order an accurate set can be made.

http://i1072.photobucket.com/albums/...ps0ad6c570.jpg

http://i1072.photobucket.com/albums/...psb9042cef.jpg

Chill31 · 1 February 2014, 03:51 PM

Thanks for posting this info!

franzkait · 2 February 2014, 01:45 AM

Sorry guys , but this is not a Fokker rudder hinge , this is a joke . And it is a bad joke .

Chill31 · 2 February 2014, 06:17 AM

Agreed that it bears no resemblance to a historical piece, but I really think the joke will be on me if I don't use one and my tail falls off bc I am using the airplane in a way that hasn't been done in a 100 years. Between a rock and a hard place

franzkait · 2 February 2014, 06:27 AM

Take 2 hinges , made like original and bolt them to a heavy piece of steel . Use a steel pipe like in the original rudder and show me how you can break the hinges .All Fokkers are very sensitive with extra weight at the tail . This hinges are more heavy .

John McKenzie · 2 February 2014, 09:39 AM

Chill 31 .....Have a "good" read of your previous thread on hinges .

Your problem is NOT ...
".that you are using the aeroplane in a way that hasn't been done for 1oo years"
( how you think they fight with this machine 1917 ?? )

Your problem is that you build the tail of the triplane like Ron Sands design it ,...rather than how Fokker designed it .

You build in this weakness with Sands ,....Make the hinge & the end of the fuselage tail correctly & there is no problem .

KiwiResin · 2 February 2014, 11:46 AM

Quote:

Originally Posted by franzkait

Sorry guys , but this is not a Fokker rudder hinge , this is a joke . And it is a bad joke .

is it? it certainly isnt intended as such.
It is a well designed strong substitute for the Fokker hinges. That it looks nothing like a Fokker hinge is immaterial when it comes to day to day use.
I am well aware of the variations in Fokker hinges, from originals through to Sands, folded straps, doubled straps etc. This is how someone who had immensely more experience than I do with Fokker aircraft designed an AD for New Zealand Triplanes, and these hinges are what I elected to use also.
The weight difference is minimal in fact, and if you would like me to, I will drop a hinge removed from the E.V. rudder onto my digital scales and compare them.
You dont have to use them, I merely posted this thread to say this is what we do, and let anyone interested in following the same path contact the manufacturer.
Dave

Chill31 · 2 February 2014, 12:36 PM

Kiwi, I would like to know the weight difference if it's not too much trouble. I have a long distance relationship with my plane, so I can't do anything definitive for a couple more weeks. In the mean time, it's speculate and plan.

The planes you saw where the hinges broke, were they sands plans?

KiwiResin · 2 February 2014, 12:47 PM

Quote:

Originally Posted by Chill31

Kiwi, I would like to know the weight difference if it's not too much trouble. I have a long distance relationship with my plane, so I can't do anything definitive for a couple more weeks. In the mean time, it's speculate and plan.

The planes you saw where the hinges broke, were they sands plans?

We have 7 Triplanes here, and they have all since been recovered and repainted. All I can say is I know which one it wasnt, the aircraft built by the late Stuart Tantrum.

I will inspect the Triplanes we have here at the moment and report back, possibly with sternpost pics.

I kind of wish I had kept my mouth shut at this time :-)

Chill31 · 2 February 2014, 12:50 PM

Quote:

Originally Posted by John McKenzie

Chill 31 .....Have a "good" read of your previous thread on hinges .

Your problem is NOT ...
".that you are using the aeroplane in a way that hasn't been done for 1oo years"
( how you think they fight with this machine 1917 ?? )

Your problem is that you build the tail of the triplane like Ron Sands design it ,...rather than how Fokker designed it .

You build in this weakness with Sands ,....Make the hinge & the end of the fuselage tail correctly & there is no problem .

I don't think they fought with them long at all

they hit the front in sept 1917. By the time MvR died, he had been through 6 of them? So call it 30 day life span for the dr1, that's excluding the time it was grounded...I hope my tricky little beast lasts me more than a month!

I think they fought with them like new pilots treat rentals

Voss wouldn't have generated the kills or stories if he wasn't abusing his plane. My feeling is he was doing very aggressive maneuvers dominated by large yaw rates which other aircraft/pilots couldn't follow.

The sands plans do look like they provide the support Fokkers provides by keeping the straps supported all the way to the vertical rudder post. There is no room for error in this business, so I will look into all solutions you have mentioned.

I'll try to keep my rudder saga well documented for those following after.