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No intention of racing but I have a
turbocharged 20B on a test stand I plan to boost to 450 HP at 6500 RPM. I haven’t
gotten it started yet, though I should be any time now.
Jay
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Kelly Troyer
Sent: Saturday, March 05, 2011
6:30 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: 20B
Numbers?
One of the first things I
would do is make sure the powers that be in the Sport
Class will not restrict you to a traditional piston engine
(like certain auto groups did
when the early rotarys were beating their B#%%'s) or
penalize you with extra weight,
etc............Then the next problem in my mind will be
finding a prop reduction unit
that will stand up that much power...........Tracy Crook
will be the first to tell you that
his RD1X units were never designed for that much
power..........IMHO
Very Interesting and Ambitious Project Though !...........I
am sure the Rotary Group
will follow and pull for you and offer all the help
they can............
Kelly
Troyer
"DYKE DELTA JD2" (Eventually)
"13B
ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50
Turbo
From: Tom
Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Sat, March 5, 2011 3:59:57
PM
Subject: [FlyRotary] Re: 20B
Numbers?
I am newby... I am building a Questair Venture. I am installing a
20B. I want to Turbo it. My goal is 500 HP,I want to race it at Reno at some point in the
Sport Class. Anyone out there doing or has done anything similar. Would
appreciate any help or advise about your setup etc. My airframe is close to
needing some power.
Kind Regards
Sent: Saturday, March 05,
2011 2:22 PM
Subject:
[FlyRotary] Re: 20B Numbers?
20B MAZDA in black outline paint; C927 on all three rotor
housings….
Marc
From: Rotary
motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Thomas Giddings
Sent: Thursday, March 03, 2011
7:57 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Numbers?
Here you go everyone: The engine should be stamped on all the
rotor housings and sideplates. Look on the top of the rotor housings where is
says "Mazda 20B"
Pre A code: 3 digit numbers only, no letter
A code : Letter A and 3 digit #
B code : Letter B and 3 digit #
All of the above are small dowel pin land motors
C code: letter C and 3 digit #
D code : letter D and 3 digit #
The C and D code have the upgraded sideplates, thicker dowel pin lands. Approx:
4mm thicker
On Mar 3, 2011, at 8:34 PM, Kelly Troyer wrote:
Share some of your new found info on the
20B with the group............
Kelly Troyer
"DYKE DELTA
JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Thomas
Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, March 3, 2011 5:23:15
PM
Subject: [FlyRotary] Re: Numbers?
Thanks Kelley....Your right...Brian knows his stuff...I have a very early 20B
Tom
On Mar 3, 2011, at 3:53 PM, Kelly Troyer wrote:
Try Brian Galloway in Calif.........He deals in Mazda parts and is
very knowledgeable in
the 20B models and the differences between
them.........Improvements were made in the
year models............For our use in aircraft the upgrades
probably are not as important as
we are not severely stressing our engines like the racers (Auto)
do.........I do know that the
later model 20B's sell at a premium...........The last time I
corresponded with him he had
both early and late 20B's for sale............I bought a 20B auto
trans bell housing from him
(My 13B "Cosmo" uses it between Tracy's RD1C and engine like
"Bulent" of this group
.....See photo) attached)..........FWIW
Kelly Troyer
"DYKE DELTA
JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Thomas Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, March 3, 2011 9:02:41 AM
Subject: [FlyRotary] Re: Numbers?
On a similar topic...does anyone know how to identify which year 20B I have? I
was told ,but have no real way of knowing .
On Mar 3, 2011, at 9:37 AM, Kelly Troyer wrote:
If your core engine still has the
waterpump on it count the number of bolts
on the pump........86-88 13B has 7 WP bolts...........89-91 has 8
WP bolts.....
93-95 13B has an all aluminum WP.......This is
quick and dirty but there are
other ways if WP is missing...........The 86-91 WP is cast iron
bolted to alum
Kelly Troyer
"DYKE DELTA
JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
<Bulent_13B_Cosy 2.jpg>--
Homepage: http://www.flyrotary.com/
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