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I think that I might be the only one still using the stock turbo. I have
about 60 hours on it now, and no problems. I definitely do take it easy
with it though. I limit boost on take off to 5-6 lbs., and most cruising is
done at about 60 % power. The 60% cruise power helps the turbo, and the
fuel burn, so that is a win-win.
I am planning however to send my turbo off for modifications. Dave Leonard
had his done by the same company, and I have talked with them. I have to
dig up the info again now, but I'll send it off when I do my annual
inspection at the end of July.
BNR turbo is the company. They replace the bearing with 360 degree thrust
bearings, bore the internal wastegate, and trim the and modify the
compressor trim.
The nice thing about this modification is that there aren't any major
changes required for the installation. Bolts right on.
Steve Brooks
Cozy MKIV Turbo Rotary
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of wrjjrs@aol.com
Sent: Friday, June 22, 2007 11:59 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: New lurker on the list
Shane, Unless you plan to fly very conservatively, you will need to
replace the stock turbo. Or as a few people have done get the unit
modified to prevent overspeeding at high altitude. Several guys flying
with the stack turbo have even REMOVED the waste gate valve entirely,
(that's right just the holes), and they still have overspeeding and
breakage. Typically the turbine self destructs and you lose boost but
the plane is still flyable fortunately. Check the archives for some of
the mods done to the stock turbo for aircraft longevity.
Bill Jepson
-----Original Message-----
From: Shane Daly <shane@innovativewings.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, 22 Jun 2007 8:25 am
Subject: [FlyRotary] Re: New lurker on the list
Thanks Ed,
I already have an old style 13B turboed engine that I am starting with,
so that decision has been made. I also have a local guy that
specializes in building rotary's for racing and he has done a couple
of aircraft engines in the past. He is Adam of RX-7 Specialties.
Thanks again,
Shane Daly
----- Original Message -----
From: Ed Anderson
To: Rotary motors in aircraft
Sent: Thursday, June 21, 2007 6:35 AM
Subject: [FlyRotary] Re: New lurker on the list
Welcome aboard, Shane
A 13B turbo should make that Glasair really boogie. All questions are
welcomed, responses are varied but, we do have folks with decades of
rotary engine experience and real -world experience with the use of it
in racing and aircraft. Data, opinions, rationale, facts,
speculations, problems, challenges, wishes and hopes can all be found
here, you're responsible for sorting them in to appropriate categories
{:>).
I would say the first decision you need to make about the engine is
whether to go with the newer Rensesis 13B or the older Rx-7 13B. If
you want turbo, the Renesis does not currently (but rumors abound about
a future Forced Induction Renesis) come configured for one - although,
it is certainly possible to roll your own turbo version. Members of
the list have found that for the most part the stock automobile turbo
which is designed for short power bursts does not do well in aircraft
application (although with very low boost levels, some have had
success). So a different turbo package would likely be the smart
thing in any case. Plenty of older 13B's around but of course the
parts availability down the road will probably start to decrease. Both
the older 13B and Renesis appear to work equally well - with the
Renesis giving a bit more power.
Just one of the many design decisions you will face.
So, again welcome to the list.
Best Regards
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://members.cox.net/rogersda/rotary/configs.htm#N494BW
http://www.dmack.net/mazda/index.html
----- Original Message -----
From: Shane Daly
To: Rotary motors in aircraft
Sent: Wednesday, June 20, 2007 10:23 PM
Subject: [FlyRotary] New lurker on the list
Hi all,
I am new to the list just getting started on a 13B turbo conversion I
plan to put into a Glasair 1TD that I am also just starting to build. I
have built a few fast glass aircraft in the past, so I have no issues
with putting the Glasair together, but I am green when it comes to
building up a rotary. I hope you don't mind a few newbie questions once
in a while? I have gone through the archives and there is a lot of
great info there, so that is where I will start. I look forward to
getting to know both the engine and the community as I progress.
Shane Daly
Calgary, Canada
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