November 2010 Blog Posts (21)

Gettin there

Finished up outboard flaperons today, gonna do the inboards after the fuse. I'm finished with wings, elev. & stab., rudder, & slats. Gonna have a big shop cleaning tomorrow, then dig all the rear fuse parts an skins out of the big box and finally get started on the fuse. Happy Day!

Added by Mason Bullard on November 27, 2010 at 9:33pm — No Comments

New Builder Completions

The following is from the Kitplanes magazine website:

Philip Smith’s Zenith CH 701


Added by Sebastien Heintz on November 27, 2010 at 8:00pm — 2 Comments

Zero ground run for takeoff?

Does anyone have a reference for a video of a CH 701 taking off with very strong headwind and zero ground run?

Added by David Abbott on November 25, 2010 at 6:26pm — 5 Comments

Rudder skeleton

I bought Jon Croke's excellent DVD on scratch building, which gave me heaps of ideas and methods that I probably wouldn't have thought of myself.

Made a bending brake just out of a hinged piece of Tas Oak on the side of the workbench (with another piece on the top which has an aluminium strip screwed to the edge with a 3mm routed edge for bending). At the moment I just screw this to the workbench when bending something, but have just bought a very stiff length of square section extrusion… Continue

Added by Marty de la Motte on November 24, 2010 at 4:52am — No Comments

Winter Preheating: Best ideas, strategies, methods, etc.

This would be an ideal time of year to hear from the Zenith forums & bloggers about their tried and true ways to preheat their aircraft. Please posts your ideas and share how you get her warmed up for Winter flight.

On my 500 hour 601XL-B, I use an electric automotive oil pan heat pad (45 mins.) and I also use the electric small milkhouse heater (45 mins.) (the one posted on the Jabiru site). I put a flexible metal tube on the heater and…


Added by Mark Ertz on November 23, 2010 at 6:02pm — 6 Comments

short flight after modifications to plug wires & oil cooler

On Monday rolled out the 801 with the cowling off, warmed up the engine and reset the idle to 800 RPM warm, put the cowl back on and added some fuel then rolled to Rwy 22 for another test flight. Plane came off the ground after only a short roll and was climbing at 80 MPH, cylinder temps remained within the limits and noted the oil temp had dropped to 220-240 F and held there, EGT s remained balanced throughout the flight. Flight was very bumpy as a storm was brewing just south of the airport… Continue

Added by Phillip Owens on November 23, 2010 at 4:24pm — No Comments


I have finished the rudder and the firewall. Rudder took some time, allot of hole to drill, enlarge, debur, cleco, and then rivet.Feels good to have a few assemblies done. On to the next one, I think it is going to be the Elevator.

Added by Paul on November 23, 2010 at 11:33am — 2 Comments

Newsletter #181 (November-December) Mailing now!

If you are a Zenith builder and not a subscriber, send me an email ( and I can send you a back issue sample of the newsletter and DVD. To renew, or subscribe, click here.…


Added by Zenair News on November 21, 2010 at 5:00pm — No Comments

plug wire changes

I had noted the plug wires as originally run appeared to be blocking airflow into and around the cylinders, so to improve the airflow I changed the location and manner in which the plug wires were run. The photos posted are only a few of those that tell the story of the change and I will try to include more photos as allowed. Take notice of the clear air pathway thru the intake plenums and how the plug wires now are barely visable within the plenum. I also made use of the old plug holes to…


Added by Phillip Owens on November 19, 2010 at 4:04pm — No Comments

What Ever Happened To The Zodiac Gemini CH620?

A question for all the Zenith builder & fans out there..."What ever became of the Zodiac Gemini CH620?"

I have the factory information about the aircraft it. I stumbled across the literature while going through a stack of aircraft sales pitches I collected over the years. For those of you who have never heard of this aircraft it looked like a it was a version of the CH601HDS series, with retractable tri-gear and twin Rotax 912 80 hp engines on a low wing. It was a two seat…


Added by Bob McDonald on November 18, 2010 at 9:30pm — 8 Comments

Suzuki 1.3 Raven Conversion cooling, need information

I have installed a 2000 Suzuki 1.3 fuel injected engine in my CH701 on amphibious floats. For initial ground running I have connected it to the radiator that was used for a Rotax 618. I'm not thinking this will be the cooling system I will fly with and am looking for information on radiator and cooling system installation from anybody who has installed this engine in a 701 and had thought they had a good cooling system.


Added by Phillip D. Tedrick on November 17, 2010 at 10:42pm — 7 Comments

Education Day and Air Show in Ghana

What a weekend... after having taken two STOL CH 701's around the country just two weeks ago, we then ran an education day - and an air show weekend!!! Errrr not like Sun'n Fun nor like Oshkosh... more like.... well, I guess you will have to read on...

We live, work and operate in…

Added by Jonathan Porter on November 15, 2010 at 2:00pm — 3 Comments

Building and flying adventures from around the world...

The internet never ceases to amaze me in how it allows us to better communicate and share information. Aside from the obvious convenience (of e-mail and websites), it's a great tool to share photos and video clips. Fast internet (something we still cannot obtain at our factory in Mexico, Missouri) and services such as YouTube makes sharing high quality video clips easy for novices. Of course, there's a whole lot of garbage out there (the vast majority is) but there is still some great content… Continue

Added by Sebastien Heintz on November 14, 2010 at 9:30am — No Comments

801 building website

I have a temporary server for my site. Server is up & down depending on whether I want to leave it on or not. If you want me to turn it on for a while, let me know.

It hasn't been updated in a few years. It will be as time allows. Note. I used an O-360, not the Subaru EG33, so the EG33 is for sale.Still on the engine stand. The pic of the entire right side of the airplane shows the top cowl loose, (it does… Continue

Added by Rich Bauer on November 11, 2010 at 9:30pm — 1 Comment

Zenith STOL CH 701, Made in China

I recently came across an email titled "Zenith STOL CH 701, Made in China, $68.00" only to discover it was for a wooden hand made desk top model of the airplane... and not a full-size version like the one pictured below (also a STOL CH 701, made in China):

This photo…


Added by Sebastien Heintz on November 10, 2010 at 9:30pm — 3 Comments

Building time and tweaks

Now that we have the cylinder head temps within acceptable range I note the oil temp is higer than I would like, so will try opening up the air intake on the oil cooler, since it is baffeled the additional air should go thru the cooler and lower the temp. Will know after the change. Still running on Mineral Oil but temps seem to be stabalizing as we go along. Lets hope the weather cooperates.

Added by Phillip Owens on November 9, 2010 at 2:51pm — 3 Comments

Instructions to fly my 701

I think the most difficult part about building my 701 is to find somebody to give me some instructions on how to fly it.I read a lot about it on the Internet but I need practical experience.Can anybody help?

Heinz Genrich

Added by Heinz Genrich on November 8, 2010 at 7:14pm — 8 Comments

Keeping fuel costs down

I love to fly and have logged 892 hours in 3 and a half years. That’s a lot of fuel.

I have never liked the lead in aviation fuel. It trashes the spark plugs and the engine oil and of course it’s bad for the environment. My 601’s Jabiru 3300 engine does not need the lead.

A few months ago I started burning premium automotive fuel. I bought two plastic 14 gallon fuel tanks from Costco for about $80…


Added by Stephen R. Smith on November 7, 2010 at 10:42pm — 8 Comments

Engine mount bolts?

4 An - 4 bolts holding a jabiru on? Say it aint so....

Added by Neil Corella on November 4, 2010 at 7:24am — 13 Comments

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