David Josephson
  • Santa Cruz, CA
  • United States
Share on Facebook
Share
  • Blog Posts
  • Discussions (437)
  • Events
  • Groups
  • Photos
  • Photo Albums
  • Videos

David Josephson's Friends

  • Clayton
  • Kyle D. Voltz
  • Lyndon Leining
  • Walt Snyder
  • Efe Cem Elci
  • Danal Estes
  • Brad W. Eikenbary
  • John  Austin
  • Christopher Jon Brown
  • Timothy D. McCall
  • Brad Rawls
  • Scott Ehni
  • rontheman13

David Josephson's Discussions

912 exhaust options

Started this discussion. Last reply by Raymond Paul Jun 25, 2018. 1 Reply

Recommendations for exhaust system for a 912ULS in a 750 Cruzer? Rotax ring mount and Zenair cowl. Could use the Zenair exhaust kit, looking for other options. What have other builders done?Continue

Steel corrosion

Started this discussion. Last reply by Chris Aysen Aug 27, 2014. 6 Replies

I'm building a 750 Cruzer, which will live most of the time within a couple of miles of the ocean. I'm doing the usual things with the aluminum surfaces and not too concerned about the 6061, but the…Continue

Rivet corrosion questions

Started this discussion. Last reply by David Josephson Aug 6, 2012. 15 Replies

I've had good experience making marine hardware out of 6061 and doubt that priming (unless the material is *very* thoroughly prepped first with cleaning and conversion coat) makes much difference to…Continue

 

David Josephson's Page

Latest Activity

David Josephson posted a discussion

912 exhaust options

Recommendations for exhaust system for a 912ULS in a 750 Cruzer? Rotax ring mount and Zenair cowl. Could use the Zenair exhaust kit, looking for other options. What have other builders done?See More
Jun 24, 2018
David Josephson might attend Doug Dugger's event
Thumbnail

Quality Sport Planes: May Open House in Cloverdale, California at Cloverdale, CA. airport O60

May 2, 2015 all day
Zenith builders and flyers we are announcing our open hanger day for 2015. It will be on May 2nd, the first Saturday of May, and it will include BBQ from Lyons club, a lot of hanger talk, and showing of Zenith aircraft. So bring your pride and joy and your airplane. There have been a few new Zeniths finished in the last few months so it should be a good flying trip for you all!See More
Apr 30, 2015
Samuel McNair left a comment for David Josephson
"Yes I have. But before I make yet more experiments and add more weight and complexity, I'd like to start with simple and proven. Somebody out there, certainly the factory, has a standard FWF cowl using the "standard"  O-360…"
Dec 10, 2014
Brad Rawls left a comment for David Josephson
"David - The Corvair motor parts I have loose besides the complete core motor are 1) TRW forged pistons (new) with resized rods and new bolts, rings and bearings for same (.010 under), forged crank that was turned .010 under, NOS balancer, pushrod…"
Oct 6, 2014
David Josephson is attending Joe Scheibinger's event
Thumbnail

Zenith Builders Banquet 2013 at AirVenture (Oshkosh) at Oshkosh Elks Lodge

August 1, 2013 from 5:30pm to 9:30pm
Here is an update on the festivities for the “Zeniths to Oshkosh” builders banquet and aircraft parking for the 2013 Oshkosh EAA Convention. The Banquet There has been a big change for this year's Zenith Builders Banquet. We outgrew our previous locations so we moved it this year to the Elks Lodge in Oshkosh. We have very comfortable seating for over 250 people, our own private bar, and award winning food. The banquet will be held on Thursday, August 1st. The bar will open at 5:30 and dinner…See More
Jul 17, 2013
David Josephson is now a member of Zenith Aircraft Builders and Flyers
Mar 23, 2012

Profile Information

Aircraft Model
STOL CH 750, CH 750 Cruzer
Project Status
Less than half
Building From
Kit
Engine installed (or plan to install)
Other
Building Experience
Have worked on airplanes before
Flying Experience
Private Pilot

Comment Wall (3 comments)

You need to be a member of Zenith Aircraft Builders and Flyers to add comments!

Join Zenith Aircraft Builders and Flyers

At 1:58pm on December 10, 2014, Samuel McNair said…
Yes I have. But before I make yet more experiments and add more weight and complexity, I'd like to start with simple and proven. Somebody out there, certainly the factory, has a standard FWF cowl using the "standard"  O-360 engine and somehow it cools properly. I already have a pile of time and money sunk in it and someone has made it work I am sure.  I'd rather not hack up the cowl any further and have to get a new one.
I have flown it with pressure gages. The problem is in exit backpressure. I made a quantum leap by adding a lip around the front of the exit opening, just like you see in a C-152 which flies a bit faster than me.   But could play with this forever and I'd really like to have a worked out solution before next summer. I should not be seeing 395 to 425'F CHTs flying in 60' F air at 75% power.
By the way. What kind of real crusie speed do you get at what engine power.  My CH-801 is a dog, getting only mid to high 70 knots at 75-80% power on a 170 hp XP-360 burning 8.5 to 9 gph!  I have heard a lot of "should be" but not anyone sharing real numbers.
Thanks for your willingness to help!
Sam
At 11:32am on October 6, 2014, Brad Rawls said…

David -

The Corvair motor parts I have loose besides the complete core motor are 1) TRW forged pistons (new) with resized rods and new bolts, rings and bearings for same (.010 under), forged crank that was turned .010 under, NOS balancer, pushrod tubes, cylinder air plates, and other little misc. parts. I was doing the same thing you are doing, collecting parts for the eventual build. You can email me directly with any questions at Brad @ocbis.com.

Thanks - Brad Rawls

At 4:16pm on October 31, 2012, Danal Estes said…

David,

Tried to message you about Data Logging and the system is acting weird... I re-clicked a bunch of times, I hope I didn't flood you with duplicates.

Anyway, my email is "danal dot estes at gmail dot com".  Email me, and I'll send the info on how I do the data logging. 

Happy to share. 

Danal

 
 
 

New from Zenith:

Zenith Aircraft For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...

                                                     

Weather Maps


Custom Instrument Panels
for your Zenith
:

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, power distribution panel, Approach Fast Stack harnesses, Dynon and Garmin avionics, and more.


Custom Upholstery Kits for your Zenith Aircraft:

Zenith Vinyl Upholstery Kits


Zenith Apparel from EAA:


Zenair Floats


Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz


Builder & Pilot Supplies:

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

 

Zenith transition and Sport Pilot training:

Quality Sport Planes
Cloverdale, California:

Wheels & Wings

Pro Builder Assistance

© 2019   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service