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Group,
Perhaps of interest to some..........Exchange I had with a "Turbonetics" service
rep. concerning choice of a turbocharger for my project............My intial choice
of a TO4E, 50 compressor trim, wet housing (coolent), 1.15 area/radius turbine
housing (to prevent overspeed at short forays up to 17,999 ft), big shaft, sleeve
bearing turbo has been based on the experience of others of the group.........
The only question in my mind was what size turbine wheel to use (F1-62 mm,
F1-65 mm or F1-68 mm) as this information was not stated in any of the posts
that I have seen from the group..........This question was answered in the posts
below from me and "Turbonetics".............John Slade of this group is using a
TO4E, 50 comp. trim, .96 a/r turbine housing, turbine wheel ??, successfully
at altitudes up to 12-14,000 I believe...............The "Cosygirrls" according to
their site have purchased a TO4E, 50 trim, 1.15 a/r housing with the intent to
fly at oxygen altitudes............Bob Rogers (Mustang II, 13B, turbo) is flying
what he says is a "60-1" trim, 1.15 a/r housing turbo..........It is not clear to
me if it is a TO4E as "Turbonetics" has a "60" series turbo that looks much
like the TO4E but with a larger compressor wheel and he was not sure which
turbine wheel he has............He has had no overspeed problems at altitude..
After my plotting my maximum boost (10 psi) (1.7 pressure ratio) at 25
lb/min(air flow) (13B) on the compressor maps it is clear that there are
several turbos that will do a satisfactory job for our rotarys...........FWIW
--
Kelly Troyer
"Dyke Delta"_13B ROTARY Engine
"RWS"_RD1C/EC2/EM2
"Mistral"_Backplate/Oil Manifold
-------------- Forwarded Message: --------------
From: Benita Betancourt <bbetancourt@turboneticsinc.com>
To: Kelly Troyer <keltro@att.net>
Subject: RE: TO4E Info
Date: Wed, 05 May 2010 18:39:00 +0000
My apologies Kelly, I did mean to type F1-65. You are right in your assumption, the smaller wheel size is better for your conditions.
Please let me know if there is anything else.
Benita Betancourt
Customer Service
Turbonetics Inc.
2255 Agate Ct.
Simi Valley, CA 93065
Phone:805-581-0333
Direct:805-426-3421
Fax: 805-584-1913
www.TurboneticsInc.com
Watch & read about and our new Forged Billet Compressor Wheels, why they are superior to cast aluminum impellers and even better than standard billet ones at the Turbonetics Blog.
Products: Turbochargers | Turbo Systems | Heat Exchangers | Valves & Controls
Markets: Industrial | Military | Agricultural Equipment | Aftermarket Automotive
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From: Kelly Troyer [mailto:keltro@att.net]
Sent: Thursday, April 29, 2010 5:17 PM
To: Benita Betancourt
Subject: RE: TO4E Info
Thanks for your response...........I have one more question.........Can you tell me
why the F1-68 (Larger diameter) turbine wheel would be less likely to over-speed
at altitude using the 1.15 a/r housing than the F1-65 turbine wheel ?........... In my
mind the F1-65 wheel would seem to be a "looser" fit in the housing and probably
bypass more of the exhaust..............I admit to being neophyte at this.............
-------------- Original message from Benita Betancourt <bbetancourt@turboneticsinc.com>: --------------
Kelly,
Your only option with the 1.15 a/r is the t4 turbine housing in a f1-65 or 68. You will want to go with the F1-68 to help with your overspeed issue.
Thank you for your email and interest in our products,
Benita Betancourt
Customer Service
Turbonetics Inc.
2255 Agate Ct.
Simi Valley, CA 93065
Phone:805-581-0333
Direct:805-426-3421
Fax: 805-584-1913
www.TurboneticsInc.com
Watch & read about and our new Forged Billet Compressor Wheels, why they are superior to cast aluminum impellers and even better than standard billet ones at the Turbonetics Blog.
Products: Turbochargers | Turbo Systems | Heat Exchangers | Valves & Controls
Markets: Industrial | Military | Agricultural Equipment | Aftermarket Automotive
From: Kelly Troyer [mailto:keltro@att.net]
Sent: Thursday, April 29, 2010 10:03 AM
To: Benita Betancourt; Benita Betancourt
Subject: TO4E Info
I am interested in purchasing a Turbonetics TO4E, 50 trim, for use on a Mazda
rotary engine flowing approx 25 lb/min to produce 10 lb booost at a 1.7p/r at
altitudes up to 18,000 ft............I plan on a 1.15 a/r tang. turbine housing to avoid
overspeed at altitude..........My question is how to choose a turbine wheel for my
needs (F1 62, F1 65, or F1 68)..........
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