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[longwinglover]

Magnus,

Remember that this wire is only necessary to work in the "pull" direction i.e. to actuate the brake master cylinders from the front pedals.  I don't think you have to have wire 1/8 inch in diameter for that.    I do not have them where I can measure, but I have new wires from Univair and they are much smaller in diameter than what shows in my pictures.

John Scott

[Will42]

A short piece of 1/4" chromo tubing should work for bending these in-place. I think I would do the initial bend before installing so as to get the correct length, then finish up in place.

Where can I get the 1/8" hard wire?

 

[Magnus Lord]

Thanks guys - it did work! But it would have been MUCH easier to install the rod at the same time as the pedals, before covering. I did the first half of the loop before attaching the rod, but as the end had to be long enough to make the rest of the loop and then the fold-back, it was a tight fit getting it inside the fabric wall.

At the rear pedal I had to put the fold-back part on top - I just couldn't get the tools in underneath.

I used a 1/8" 4130 rod. Bendig pianowire like that just wouldn't work. 1/8" might be necessary, because there is somewhat of a push motion too - the front pedals have no springs, so the rear ones will have to push the front pedals forward, as long as we don't want the rods to bend and touch the floor (which I on the other hand guess is absolutely acceptable).

I finished the left one and will do the right (more visible) one tomorrow.

Magnus

[hames57]

Magnus, I think you are going for a true original stock look on the brake rods.  If not, my cub had eight inch threaded rod with a threaded on clevis fork connection on both ends of the rod.  That allows easy installation and adjustment.  I don't think that is original, but certainly is more serviceable over time.  Uses a clevis pin at both ends, no bending  and sleeving, etc.

Glad you are back at work on the cub.  I've just finished glueing up the exterior cover on NC55100.  I'll be brushing on Poly Brush next week.  It is starting to look like an airplane. 

Harry Ames

[Magnus Lord]

It's really good to be back, Harry!

Yes, forks would be much easier. I had to adjust the bends slightly several times, so I had to check it for cracks carefully. Just imagine the nice ground loop if one of the rods fails...

Magnus

[JimC]

If one brake fails, you can still stop the plane pretty short and straight by using just the good brake combined with opposite rudder.  Been there, done that.
JimC

[Magnus Lord]

Hi everyone!

After flying the SAAB Safir, changing jobs and buying a farm, I am now back in the workshop again, for as long as i takes to finish the Cub I hope.  (I used to be active on this forum a couple of years ago, getting a lot of help while restoring my 1946 Cub).

I managed to find my old "how to" photos again in the album section http://www.j3-cub.com/coppermine/index.php?cat=5, but they are in the wrong order. Anyone knows how I can rearrange them?

Best regards,

Magnus

[David Johnson]

Welcome back.