From: "DaveLeonard" <daveleonard@cox.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Another flex plate thread
Date: Fri, 21 May 2004 12:12:19 -0700
Message-ID: <PIEMJLCHGPKMFMDHBKMLCEDKCBAA.daveleonard@cox.net>
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Dale,
You will also need the counter weight based on which rotors you have.  I
haven't seen these on e-bay which is surprising because they really should
go with the flex plates.  I guess people are keeping them with the engines
because it will require removing the e-shaft nut.  Besides the counter
weight, you will need a bunch a metric bolts to attach the flex plate to the
counter weight, a flange (crush plate looking washer), and an e-shaft nut.

To tighten the e-shaft nut you will need the proper sized (very big) socket
(I forget the size you can find that on the mazdatrix web site).  I got a
socket from McMaster Carr for about $30.

You will also need some way to keep the e-shaft still while tightening.
Mazdatrix sells a tool that works OK, or you can make a breaker bar.  Be
careful, I almost ruined my flex plate trying to use a home-made breaker
bar.  The flywheel is much more amenable to a home made breaker bar than the
flex plates.

Good Luck,
Dave Leonard


Hi All,

   Okay, now the "newbie" in me is really going to show.
Earlier in the year I picked up an engine - for a rather
"friendly" price.  As time has gone along, I'm finding
more a more things that I missed on the pre-purchase
inspection.  I still got a good deal for a "bare block",
but now I'm having to find parts "blind".  I don't know
what they're supposed to look like.

   The flywheel end of my eccentric shaft is just a taper
with a key.  So I'm missing some sort of a hub upon which
my new flexplate (Thanks, Dave L.!) is supposed to mount.
My handy-dandy Chilton manual yields not a clue.  Yeah, I
know, I need to stop at Checker and pickup the Haynes
book.

   So, before I start searching the local Mazda dealer
for parts and pieces, I need to know if I even got a
useable flex plate. Here are two photos of my "new" part.
Can someone tell me if I got the right one for 86-88?  Or
how to identify it?  And how to indentify the counter-
weight?  The torque converter mount holes are about 1-9/32"
apart.

ADVthanksANCE,
Dale R.
COZY MkIV-R #1254