How did you guys fill in the two Slots in firewall from nosewheel pushrod?

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Permalink Reply by John Austin on November 15, 2024 at 6:31am

Zenith kits normally have covers with sliding plates inside that fit around the push rods:

John

N750A

Permalink Reply by Jay M. Johnson on Saturday

On the Cruzer, part numbers C75F8-7 and C75F8-8 shown in place on drawing C75-FA-5.

Permalink Reply by Perry Delano on November 15, 2024 at 9:47am

Hi Brian,

I made two Plates out of .032 or .040 with oversized slots. Then made a couple of nylon cloth cones / boots (material left over from some skin on frame kayak / baidarka projects, designed by George Dyson). I coated the outside wth black rubberized paint for customizing cars and coated the inside with red high temp silicone. I clamped the cones between the two aluminum plates using 3/32 rivets. I then unhooked steering rods, sliding assembly over the rods and riveted the assembly to the inside of the firewall. I used a couple tie wraps to secure to steering rods. The heavy nylon weave cloth cuts well with a blade on a soldering gun and can even be stitch welded using a soldering gun. I used the same technique where throttle rods went through firewall.

See photo on home page, it comes in rotated if I attach it here.

Perry

Permalink Reply by Brian g lloyd on Sunday

Thanks for rapid reply John and Jay. Unfortunately the braces on the early 801 will not allow sufficient up/ down movement on the sliding plates. Perry I am heading to your website to see what you did. I mat contact Zenair to see if I can modify braces. 
Thanks Guys

Brian

Permalink Reply by Ralph Powell on Wednesday

Is there someway to put the standard, or slightly modified slides on the inside of the firewall?

Ralph

N750RP

As to why to have a fire resistant fire wall do a search on Facebook for Hal Stockman Stol. There is a series of pictures of the results of an in flight fire. Not a Zenith. He was not seriously burned.

Permalink Reply by Perry Delano yesterday

Hi Brian, 

Let me know if you decide to go the cloth boot method and I can send you an off cut of nylon cloth. Rubber boots have also been used as seen on Brian Unruh’s website (no longer on internet). You might search Baidarka or skin on frame kayak to get an idea of the material.

Perry

Permalink Reply by Tim Juhl yesterday

I have a 601 XL-B.  I addressed the problem by re-purposing a couple of Jeep transfer case boots. I made the retainers out of scrap aluminum and riveted them to the inside of the firewall.  This was back before Zenith was offering a way to close the slots. I have no idea whether they would work in your situation but thought I'd show them to you.

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Permalink Reply by Perry Delano yesterday

That looks really good.

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