Kay C Caldwell
  • Gunnison, UT
  • United States
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Michael T. left a comment for Kay C Caldwell
yesterday
Michael T. left a comment for Kay C Caldwell
"I was watching some of the Ch640 videos online on Youtube.. CH-640 presentation (Part 1) I think its a Video made by Jeff Paden. In that Video he relates that the Alarus originally had a large rudder, in 2003 the Alarus went to a smaller rudder but…"
yesterday
Michael T. left a comment for Kay C Caldwell
"The 640 plans make reference to large rudder on some drawings but just rudder on others. Is that a hold over from the ch2000 alerus having a smaller rudder? And they made the ch640 bigger"
Sunday
Michael T. left a comment for Kay C Caldwell
"Did you make your own counter weights, any suggestions there if you did, or did you buy some parts from zenith."
Saturday
Michael T. left a comment for Kay C Caldwell
"I was looking over the ch640 plans ...the term dl or developed length, is that just the pre bent size of the parts before bending? I was going to play around with scrap to get a good idea of what the bending process does to the size of the parts."
Friday
Michael T. left a comment for Kay C Caldwell
"Small world, years ago I called Don Parnam from an ad in the back of kitplanes magazine. I was considering putting an auto conversion on my RV-7 kit I was building. He talked to me at length and answered all my questions. I wondered why he had no…"
Oct 11
Michael T. left a comment for Kay C Caldwell
"When you say subaru....was it an eggenfellner engine , or our own design eg81 or eg25. What re-drive did you put on it? id like to hear what happened to it I was following the whole subaru craze at the time too. On the plans does developed lenth…"
Oct 11
Kay C. Caldwell left a comment for Kay C Caldwell
"The video I saw was done by James Cameron. He is also a member of this site. He is listed as one of my friends."
Oct 10
Michael T. left a comment for Kay C Caldwell
"do you have any links to those ch-640 sites in France your talking about. Like to look them over."
Oct 10
Michael T. left a comment for Kay C Caldwell
"I saw the video you're talking about. done by Jeff paden. I have see his website on archive.org www.madbbs.com/~jpaden/">https://web.archive.org/web/20090106004250/www.madbbs.com/~jpaden/ On that video is does show a shot of a sheet cut list, but I`m not sure if its…"
Oct 10
Michael T. left a comment for Kay C Caldwell
"Nice to hear from you I used own a Rv-7 kit that I built to the wings stage, I have a little experience in the building but not some much in the scratch building. I`m at the very beginning stages..reading over the plans and looking at…"
Oct 10
A photo by Kay C Caldwell was featured

Zenith CH 640

Taxied today for the first time with cowl...She sure wants to fly!!!
Oct 3
Kay C Caldwell posted photos
Oct 2
Kay C Caldwell posted a video
Oct 1
Kay C Caldwell posted a photo

off to the airport

off to the airport!!!
Sep 6
Kay C Caldwell posted a blog post

tail dragger

Wondering if anyone else thinks Zenith should design an all new STOL that is a tail dragger???  Love the performance but I wish they had a tail dragger version.  Don't much like the looks of the conversions I've seen.....Just a thought..Kay CSee More
Aug 2

Profile Information

Aircraft Model
ZODIAC CH 640
Project Status
Nearly done
Building From
Plans-only
Engine installed (or plan to install)
Lycoming
Building Experience
Have worked on airplanes before
Flying Experience
Private Pilot
Home Airport (ie. KMYJ)
44U

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Kay C Caldwell's Blog

tail dragger

Posted on August 2, 2017 at 6:41pm 2 Comments

Wondering if anyone else thinks Zenith should design an all new STOL that is a tail dragger???  Love the performance but I wish they had a tail dragger version.  Don't much like the looks of the conversions I've seen.....Just a thought..

Kay C

Comment Wall (11 comments)

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At 10:38am on October 16, 2017, Michael T. said…

At 10:22am on October 16, 2017, Michael T. said…

I was watching some of the Ch640 videos online on Youtube.. CH-640 presentation (Part 1)

I think its a Video made by Jeff Paden. In that Video he relates that the Alarus originally had a large rudder, in 2003 the Alarus went to a smaller rudder but the CH640 retained the older Alarus large rudder.

Jeff also posted a materials list in the video and parts sheet cut out. Would be great to find those for current or future builders. Do you guys have any contact info for Jeff, does he post here anymore?. Iver tried to email him from the address listed in his old build website but it just bounces back

At 5:35pm on October 15, 2017, Michael T. said…
The 640 plans make reference to large rudder on some drawings but just rudder on others. Is that a hold over from the ch2000 alerus having a smaller rudder? And they made the ch640 bigger
At 6:54am on October 14, 2017, Michael T. said…
Did you make your own counter weights, any suggestions there if you did, or did you buy some parts from zenith.
At 9:14am on October 13, 2017, Michael T. said…
I was looking over the ch640 plans ...the term dl or developed length, is that just the pre bent size of the parts before bending?

I was going to play around with scrap to get a good idea of what the bending process does to the size of the parts.
At 6:17pm on October 11, 2017, Michael T. said…

Small world, years ago I called Don Parnam from an ad in the back of kitplanes magazine. I was considering putting an auto conversion on my RV-7 kit I was building.

He talked to me at length and answered all my questions. I wondered why he had no web page and he said he was old and didn't have the know how.  I never ended up buying anything from him but he educated me for free....so

As a thanks I whipped up a Geo-cities web page for him with google photos of his installs. You might have seen his site.  but that site would have gone down with Geo-cities closing.

I never knew what happened to Don, is he still around?

At 11:04am on October 11, 2017, Michael T. said…

When you say subaru....was it an eggenfellner engine , or our own design eg81 or eg25. What re-drive did you put on it? id like to hear what happened to it I was following the whole subaru craze at the time too.

On the plans does developed lenth =DL is that just the pre bent length of the part or is there more I should know when doing bends.

Just curious is there a reason why the rear rudder skin is in 2 parts..lower and upper. I was wondering why not just have one big skin there? does the double overlap ad to its rigidness..I was thinking that was extra weight so far back?

At 11:37am on October 10, 2017, Kay C. Caldwell said…

The video I saw was done by James Cameron. He is also a member of this site. He is listed as one of my friends.

At 11:24am on October 10, 2017, Michael T. said…

do you have any links to those ch-640 sites in France your talking about. Like to look them over.

At 11:20am on October 10, 2017, Michael T. said…

I saw the video you're talking about. done by Jeff paden. I have see his website on archive.org

https://web.archive.org/web/20090106004250/www.madbbs.com/~jpaden/

On that video is does show a shot of a sheet cut list, but I`m not sure if its for the ch-640 or another plane

Is Jeff still around as in communicating with other builders, Ive thought of writing him.

 
 
 

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