I am not sure which Zenith this is then. The 801 is the high wing   STOL
right?
This may be for the  ZODIAC XL/601. Somebody said all Zeniths  were   the same
firewall.
No problem changing it. Notice this is for a one rotor LSA. Are   you  using a
two rotor?

I dwgs are preliminary so I was planning on using that top  center   hard point
for the rear motor mount using a strut arrangement similar to this.

The rad may fit under the engine. Two rotors require a rad about   600  cubic
inches no more than 2 inches thick. That implies a rad core  about   18" by 18"

Paul Lamar ...No rotor no motor.

Well, No I didn't say all Zeniths shared the same firewall, what  I   said was
that the CH-640, and the CH-801 Stol shared the same firewall  (as   well as
the certified AMD 2000). The only difference from 801 to 640 is   the  top
center reinforce present on the 801. The 640 being a low wing   design  doesn't
have this feature. I hope that I have cleared up the confusion.
I have no information on the 601 or 701. they may share the same    firewall
design between each other, or not.

C. Smith
CH-640 builder

One needs a menu to keep track of all these numbers :)
What is the difference between a 701 and an 801?

> Paul Lamar ...No rotor no motor.

The CH 701 is a two seater and the 801 which looks similar is scaled
up for four seats.  The 701 is limited to 200 lbs firewall forward
(Rotamax) while the 801 is designed for  the FWF weight of an
0-360.   These designs are both extreme STOL high wing,  low and
slow.  There are also Zenith designs that are designed  to go faster.
I don't know much about them as my interest is with the 701.  Judging
from forum activity I would guess there are many, many builders and
new launches are frequent.    Jerry

Which one do we need a motor mount design for first?

> Paul Lamar

The 801 for Patrick Wrase.  He is in line for an engine mount.   Here
is some old stuff from around beginning of this month.    Jerry


OK I assume he wants the 13B trust line moved down 56.94 mm down
from the Lycoming position based on the attached FW-DWG2.JPG dwg.
Is that correct? We will use the upper hard point for the rear mount
strut.

Paul Lamar ...No rotor no motor.

Yes,   that is correct.    Should make a very light, clean engine
mount, so long as the strut clears the gear leg.     Jerry


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