Jerry Hey wrote:

Paul,   I would like to get the firewall hard points for

all the

popular
designs. This would include the Cozy, Kiss Cruiser,  RV-4,

RV-6 tri

gear  and conventional among others.   <chop>     Jerry

Check the web site I think many of them are on there.
Here is the Kis Crusier I think.

Paul Lamar

Jerry, if you still need the RV-4 info let me know and I'll

give you

what I
have.  Is this for mounting the same as Paul has done with

the motor

plate
on the redrive?  This must be a lot narrower for the RV-4.

Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

Mike,    Yes,  nearly the same as Paul's.  I do need the RV-4
numbers.   The Motor Mount plate can be made as narrow or wide

as the

situation requires. I expect  it to vary with every  each

design.

I will also need to know the distance from the firewall to the

outboard

face of the prop flange. Thanks,  Jerry

Jerry, send me your email address to mike.mcgee@onemain.com.  I have

RV-4

engine mount dimensions scanned in and the files are rather large.

I don't

want to plug the ACRE NL bandwidth with them.
Mike

Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

That's OK Mike I will intercept them. Perhaps they will come in useful

in

the future.
I save everything. I also have ways to reduce file sizes and convert

from one

file type to another. Send them to me too.

Paul Lamar

I did some crunching on these and think I have some useful gif's.  The

only

measurement I didn't find in my info is fire wall to prop flange, but,

Paul

had this on earlier discussions of the RV-4 mount.  I just can't verify
this as the plane is out at the hanger.

Using all these pictures to pull info from:
motor mount to fire wall bolt centers:
23" w x 20" h
prop axis is:
perpendicular to fire wall, on vertical center line,
4" below top bolt centers, 16" above bottom bolt centers
prop flange face ~39" from fire wall

One rub I came up with is getting the landing gear tubes match drilled

to

my existing gear legs.  This is normally drilled undersize and reamed to
fit the close tolerance bolt.  Open to suggestions here.

Mike

Mike McGee, RV-4 N996RV, O320-E2G, Aurora, OR
13B in gestation mode

Good job Mike. Thanks. Not much I can do with those as far as making
them smaller. Been there and failed with large paper drawings :-)>

Anybody want them let me know. Too much to publish.
Did you get them Jerry?
Paul Lamar

Mike,   Mark and drill the gear mtd as close as possible and if it doesn't
come out just right, make washers of .071, file the receivers so the gear
can be rotated in the right place and weld the washers in place.  The
Tailwind guys are doing it this way.  JohnD.

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org