All Blog Posts (2,178)

601 XL Elevator Balance Bungee

N601LL is 100 hours now and only remaining item was needing some up elevator trim for level flight and not enough up trim for a proper flaps down engine out glide.  The incidence of both wing and stab were good but as it does take quite some force to lift the elevator I decided to try a simple fix.  I put an eye hook on stab, drilled a hole in elevator horn and installed s-hook there.  Then connecting the two using #64 rubber bands discovered that seven was a good balance. 

I have not…


Added by Joe Hopwood on June 17, 2020 at 1:51pm — 4 Comments

Ground adjustable prop.

On a ground adjustable 60 inch two blade prop on a Jabiru 3300, what's the ideal pitch setting, I have changed mine which produced high EGT's

Added by Raymond Woods on June 16, 2020 at 8:00pm — 2 Comments

Rotax Ring mount / Engine mount


I need some info / diagrams for dimensions of a Rotax 912 with a ring mount for a 650B. Made a start with using a Sling mount to the Rotax Ring... need a distance from firewall forward to Centre of Gravity. Can anyone who has done this help?? Any photos or advice welcome.…


Added by Mark Jackson on June 8, 2020 at 4:51am — No Comments

Rudder Skeleton

It is finally starting to look like something, Rudder Skeleton clecoed together.

Added by Keith Thomas on May 5, 2020 at 12:21pm — 1 Comment

1000 hours on my 2007 601-B

Just completed TOH on my Zodiac with 3300 Jaburi. Actually, this is 2nd toh. Did an early service to correct stuck rings cause by Bing carb & poor oiling system. Corrected with throttle body carb with mixture control.

Recent service was due to burned exhaust valve. Added double ring kit, too. Run in numbers are great.

Added by Mark Ertz on May 3, 2020 at 10:00pm — 1 Comment

Angle of incidents?

Anyone changed their rear wing mount plates to reduce drag in cruise?

Added by Mark Ertz on May 3, 2020 at 10:00pm — 1 Comment

Rudder Parts

Finally able to make some progress. Cut out rudder skins, and rear ribs. Still need to cut out rudder spar, nose rib and bottom rib.

Added by Keith Thomas on April 30, 2020 at 2:03pm — 1 Comment

100 hours


Added by Mitchell Hargin on April 16, 2020 at 5:27pm — No Comments

Online Resources for New Builders

There are some great free resources available to new builders, especially useful to introduce yourself to some of the kit skills and concepts you'll use building your own aircraft.

Zenith YouTube Channel. We publish a lot on our YouTube channel, from flying videos,…


Added by Zenith Aero on April 16, 2020 at 11:47am — 1 Comment

Change my model number

I wish Zenith allowed you to create your own model number on this site instead of using a drop down list. I got my 750 STOL kit before they introduced the Cruzer, which kind of met my needs and desires better than the STOL. Unfortunately there's no way to convert one to another, and I can't afford to buy another kit. I am making changes to 'Cruzer-ize' my plane, mainly not installing the leading edge slats. I may consider other things like wheel pants as well, but I haven't really decided…


Added by Bob Simmons on April 10, 2020 at 9:56pm — 3 Comments

0200A - Carburetor fuel pressure

On my 650 I have an 0200A with 2 inline faucets pumps. On one pump I get about 5 PSI of pressure. On 2 pumps I get more than double that. I read that normal pressure should be between 3.5-4.75 PSI in the Continental book. Is there any risks I blow something in the carburettor at that higher pressure? Anyone else using this config?

Added by Alain Dufresne on April 6, 2020 at 1:23pm — 7 Comments

Zenith Aircraft Update re Coronavirus Pandemic

Saturday, April 4, 2020 - Mexico, Missouri

Like everyone else, Zenith Aircraft Company has been impacted by the COVID-19 coronavirus pandemic. While the Zenith Aircraft kit factory is located in a fairly rural area and there have been no reported cases of the coronavirus in the immediate area, the response to this pandemic needs to be widespread and is affecting all of us. For the past few weeks…


Added by Sebastien Heintz on April 4, 2020 at 4:00pm — 6 Comments

CH650B - W&B Datum position

CH650B W&B Question. On the W&B calc sheet, a note puts the Datum line at Station 1790 mm. along the leading edge of the wings. To my knowledge, Station line 0 should be the aircraft centre line. Or should I measure this from the side of the fuse? Ideas?

Added by Alain Dufresne on March 30, 2020 at 9:00pm — 5 Comments

Airplanes first day outside

Added by John Burns on March 30, 2020 at 7:20pm — No Comments

Tail / Slats / Flaperons

About 3 weeks ago finished the rudder. Failed to take account lead time so have been reading Sky Ranch, and did short block Corvair assembly. I'm looking for some 95 or 110 HP heads if someone has some rebuildable cores, hit me up I'll take them off your hands ; )

Rudder on parts rack…


Added by Skip Rhudy on March 25, 2020 at 11:34pm — 3 Comments

Work on it daily

It is critical that I work on my airplane every day in order to make progress.  I find that if I have more than 24 hours between sessions it is way too hard to remember where I left the tools !  :-)

Added by John Burns on March 17, 2020 at 6:42pm — 4 Comments

Flying and Inspiring the Younger Generations

I just want to encourage those that fly not only young eagles, but any younger generations to continue to do so. I can't begin to explain the joy this kiddo had when he took his first flight in the SD this last week. Something he will remember always and I know many of you are out there sparking that same joy and wanted to say thank you. Alissa…


Added by Jan Eggenfellner on March 16, 2020 at 9:30am — 2 Comments

Rear Fuselage and Rudder Hinges

Approaching 600 hours.  I have made substantial progress on the rear fuselage and have installed the rudder hinges with the help of  a metal rod.  

Added by Bradford Drown on March 13, 2020 at 7:30pm — No Comments

WANTED: Photo of your airplane project in your garage

A well-known national aviation insurance company is working on a print advertising campaign, and they are looking for a specific photo showing an airplane being built in a home garage. See below sample (keeping in mind this is just a sample).

Are you currently building your Zenith in your garage, and is your project at a stage where it is well recognizable as an airplane? They want to arrange a photo shoot with you (or alternatively use a suitable file photo of your project in your…


Added by Sebastien Heintz on March 5, 2020 at 2:59pm — 2 Comments

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