Turbcraft P-38B: Engine or Paperweight?

Moderator: Mike Everman

Post Reply
matt512s
Posts: 46
Joined: Thu Jul 07, 2005 4:46 pm
Antipspambot question: 0
Location: Scotia, NY

Turbcraft P-38B: Engine or Paperweight?

Post by matt512s » Wed Aug 02, 2006 4:10 pm

Hi All;
There seem to be a number of sites selling plans for the
Turbocraft P-38 axial turbojet. Given the near-universal inability
to get their U-22 turbojet to work, is this one any better? I find
the claims of 20 lbs thrust to be highly suspicious. Is this another
case of a elaborate paperweight?
Best Wishes:
Matt

Johansson
Posts: 1161
Joined: Sun Nov 21, 2004 9:42 pm
Antipspambot question: 0
Location: Northern Sweden

re: Turbcraft P-38B: Engine or Paperweight?

Post by Johansson » Thu Aug 03, 2006 9:37 pm

Most certainly a paperweight...

//Anders

Fricke
Posts: 325
Joined: Tue Mar 01, 2005 8:17 pm
Antipspambot question: 125
Location: Southern Sweden
Contact:

re: Turbcraft P-38B: Engine or Paperweight?

Post by Fricke » Fri Aug 04, 2006 10:48 pm

More like an boat anchor!!

Join the DIYGT forum at Yahoo groups... And spend a few weeks reading thru the +30k posts... =) Or get Your self a copy of Thomas Kamps books....

GT´s are quite simple to get to work... But they need a lot of tweaking to get them to work optimum...

paulj
Posts: 29
Joined: Wed Jan 31, 2007 8:28 pm
Antipspambot question: 0
Contact:

Post by paulj » Wed Jan 31, 2007 10:18 pm

Hi, i have the U22 plans somewhere, it's a waste of time as i can see.
but if you are really that desperate to see the plans i'll see if i can find them

paulj
Posts: 29
Joined: Wed Jan 31, 2007 8:28 pm
Antipspambot question: 0
Contact:

Post by paulj » Thu Feb 01, 2007 4:27 pm

found the P38 plans, see attached.

they might give someone some ideas towards building an axial engine
Attachments
turbocraft fan-jet p-38.pdf
(595.5 KiB) Downloaded 1054 times
see some of my jet related video clips here:-

http://www.youtube.com/profile?user=slartibartfast69

Zippiot
Posts: 1190
Joined: Tue Nov 15, 2005 7:55 pm
Antipspambot question: 0
Location: california
Contact:

Post by Zippiot » Thu Feb 01, 2007 8:37 pm

Got the plans for the U-22?

Both never ran correct? Looking at the nice round numbers for the blade angles I'd assume so...

I once made a small (3 in diameter) axial, it ran for 2 or 3 hrs before I started losing blades...Next time I use stainless!
Sailing Student- How do I know if my life jacket is tight enough?
Me- Can you breathe?
Sailing Student- Yes
Me- Then its too loose!

paulj
Posts: 29
Joined: Wed Jan 31, 2007 8:28 pm
Antipspambot question: 0
Contact:

Post by paulj » Fri Feb 02, 2007 11:43 am

i do the plans somewhere although they are not scanned into my computer, i'll see if i can find them today and see what i can do

Paul
see some of my jet related video clips here:-

http://www.youtube.com/profile?user=slartibartfast69

paulj
Posts: 29
Joined: Wed Jan 31, 2007 8:28 pm
Antipspambot question: 0
Contact:

Post by paulj » Fri Feb 02, 2007 12:13 pm

found the plans for the U22, it's amazing what you find in the shed when you haven't been in there for ages, i also found some phoenix 30.3 plans, i think there are 3 copies.

regards the U22 plans, i have a A1 sheet with all the drawings on, i have taken photos of each individual part so there will be quite a lot of pics that i'll be posting on here, i need to resize them all first so bare with me.

Paul
see some of my jet related video clips here:-

http://www.youtube.com/profile?user=slartibartfast69

paulj
Posts: 29
Joined: Wed Jan 31, 2007 8:28 pm
Antipspambot question: 0
Contact:

Post by paulj » Fri Feb 02, 2007 1:17 pm

U22 plans attached
Attachments
u22.zip
(824.46 KiB) Downloaded 2280 times
see some of my jet related video clips here:-

http://www.youtube.com/profile?user=slartibartfast69

matt512s
Posts: 46
Joined: Thu Jul 07, 2005 4:46 pm
Antipspambot question: 0
Location: Scotia, NY

Turbocraft P-38

Post by matt512s » Fri Feb 02, 2007 5:17 pm

Hi;
The P-38 plans are great, and I already see modifications that could
be made. A smoother flowpath, bigger rotors to reduce rpms, more
blades on the rotors and stators and film cooled combustor tubes (I
saw those on Free Patents Online. Also more robust bearings so the
engine could be run for extended periods.
Best Wishes
Matt

WebPilot
Posts: 3716
Joined: Tue Dec 07, 2004 6:51 pm
Antipspambot question: 0
Location: 41d 1' N 80d 22' W

some .html

Post by WebPilot » Fri Feb 02, 2007 9:24 pm

I wrote some .html to aid in viewing the jpg's paulj provided. It can
be downloaded here.

To use, unzip this file into the same directory the .jpg's were.

It works in Netscape, Opera and Firefox 2. I don't know about IE,
because I don't use it.
Image

Post Reply