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Thanks for the tip.

When I bought some primer the seller was trying to sell me some Prekote. He told me all the RV builders use it, but then they use a lot of clad 2024.

In the Zenith Construct ...

So in your original post David, you mention you were contacted by the FAA and the NTSB, apparently because yours is a CZAW 601.

Now, there have been a number of answers to my question about the we ...

Can someone please clarify?

As I understand it the CZAW 601s have a lower MTOW and are built from lighter material in some areas, correct?

So, obviously the cable tensions need to be correct reg ...

Hi Dave,

I had questions for Zenith on the subject of spacing and edge distance early on. They were not too fussy about pitch or edge distance, provided the edge distance was no less than 8mm and t ...

Hi Greg,

I bought a couple of spray cans of Tempo Zinc Oxide from Aeroparts here in Australia. The only problem was exorbitant freight for dangerous goods, but out here where I live it was cheaper ...

Congratulations David. I have just turned a deeper shade of envy green.

Glenn.

Hi folks,

I'm wondering how you scratchbuilders went with the stab ribs end flanges.

I made mine some time ago and am at the stage of assembling the skeleton.

What I found was that the heig ...

Fantastic Scott, congratulations! Very Happy

Congratulations Floyd!

Glenn.

Number 2 behind the 747, heh heh, fantastic. Great story Juan.

Ah, good on ya Larry! It's worth the effort.

Glenn

After looking closely at my Dave's brake last night and removing the hinge pin, I discovered what is happening is that the rivets aren't pulling at all. The hinge rolls are bending and coming away fro ...

That's a fine looking unit Ron. Yes I know all industrial brakes have the tensioner on them, where Dave's design uses the piano hinge to maintain even pressure, as long as you don't ask too much of it ...

You are right Andy and I think I have found it... because the brake is so long (10'), there is a lot of pressure in the middle and it is pulling the hinge away in the centre, very slightly. I'm using ...

Now that I think about it, I'm going to guess the radius of the bend in the middle is slightly larger than the radius at the ends because 1) the face of the tongue is a fairly good distance from the c ...

Hi Andy,

The bending brake components are straight, I've checked and re-checked with string lines and the bench it's on is level and straight. At first I thought the part was slipping, but my test ...

Yep, that part is clear Ron, but this only ensures an equal flange angle all the way along... the overall curve of along the length remains. It's simply not straight.

Glenn.

I am talking about o ...

Hi Ron,

That is just a normal occurrence of bending metal that way. I normally overbend a little so the middle comes out right then open up the overbend areas by lightly hammering and checking oft ...

Hi Scratchbuilders,

Well I've been following some of your suggestions using Dave Clay's brake, including the recommendation of leaving the flanges wider while bending, then trimming them down and L ...

That's a fine brake Andy, unfortunately space dictated what I could use, so Dave's brake on the bench edge is great.

Check out my 8' brake. I've bent 6' .040 on it. Extra clamps involved, but it di ...