Today's Message Index:
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0. 04:24 AM - PLEASE READ - Matronics Email List 2018 Fund Raiser During November! (Matt Dralle)
1. 09:20 AM - Re: static rpm (jpkarnes@comcast.net)
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| Subject: | PLEASE READ - Matronics Email List 2018 Fund Raiser During |
November!
Dear Listers,
Each November I hold a PBS-like fund raiser to support the continued operation
and upgrade of the Email List and Fourm Services at Matronics. It's solely through
the Contributions of List members (you) that these Matronics Lists are possible.
You have probably noticed that there are no banner ads or pop-up windows on any of the Matronics Lists or related web sites such as the Forums site http://forums.matronics.com , Wiki site http://wiki.matronics.com , or other related pages such as the List Search Engine http://www.matronics.com/search , List Browse http://www.matronics.com/listbrowse , etc. This is because I believe in a List experience that is completely about the sport we all enjoy - namely Airplanes and not about annoying advertisements.
During the month of November I will be sending out List messages every couple of
days reminding everyone that the Fund Raiser is underway. I ask for your patience
and understanding during the Fund Raiser and throughout these regular messages.
The Fund Raiser is only financial support mechanism I have to pay all
of the bills associated with running these lists. YOUR personal Contribution
counts!
This year we have a really HUGE and TERRIFIC line up of free gifts to go along
with the various Contribution levels. In fact, there are 9 great gifts to choose
from! There's something for everyone, to be sure.
Please make your List Contribution using any one of three secure methods including
using a Credit Card, PayPal, or by Personal Check. All three methods afford
you the opportunity to select one of this year's free gifts with a qualifying
Contribution amount!!
To make your Contribution, please visit the secure web site:
http://www.matronics.com/contribution
I would like to thank everyone in advance for their generous financial AND moral
support over the years!
Thank you!
Matt Dralle
Matronics Email List Administrator
RV-4/RV-6/RV-8 Builder/Rebuilder/Pilot
Message 1
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Hey guys,
After dealing with issues with the Stratus engine stemming from overheating
in the past, I replaced the original engine with a short block from RAM.
Kept the Stratus redrive, however. Problems began after I sent the heads t
o RAM for a fix of the valve guide issues. Tried everything to torque the
heads down without the studs working their way out of the case. Finally ad
mitted defeat and now will have a RAM engine through and through. I called
Ron of RAM to see if he would help me with converting to fuel injection bu
t he said that he is getting away from Subaru and didn't have anything that
I could just bolt on and go. So it looks like it's carbs moving forward.
> On October 25, 2018 at 9:58 AM ron hansen <ronhansen123@gmail.com> wrote:
>
> Best of luck with everything.
>
> Ron
>
> On Wed, Oct 24, 2018 at 8:14 PM nail13zg < nail13zg@centurytel.net ma
ilto:nail13zg@centurytel.net > wrote:
>
> > > Ron, thanks for the response. Lot of good information
. You have certainly had your hands full.
> >
> > As to my prop, It's a 3-blade Warp Drive, 72 inch diameter, set
to 11 degrees pitch which is what the company recommends. Still have to te
ach the blades to see what rpm they are turning at the 5000 engine rpm. Tha
t's a project for next week.
> >
> > Trey
> >
> >
> >
> > Sent from my Galaxy Tab=C2=AE A
> >
> > -------- Original message --------
> > From: ron hansen < ronhansen123@gmail.com mailto:ronhansen123@g
mail.com >
> > Date: 10/24/18 10:20 AM (GMT-07:00)
> > To: stratus-list@matronics.com mailto:stratus-list@matronics.co
m
> > Subject: Re: Stratus-List: static rpm
> >
> > Trey,
> >
> > Here are some dyno results I had done back in 2011. The lower
HP one is how my Stratus-built EA81 worked from Stratus and how I flew off
my initial 40 hours. That flying was done before the dyno and although I h
ad far less than 100HP available, I was able to achieve decent results in t
esting on my Zenair 601HDS at max gross weight of 1320#. Not stunning, but
okay. The engine ran like a top. I had some cooling issues that took man
y flights to work out.....or so I thought.
> >
> > I had a valve failure on the ground and sent the engine to Ram
Performance in South Carolina. He said I had very uneven fuel distribution
due to the Stratus carb design. He fixed the engine and put in spacers be
tween the carbs and the heads that he had worked to develop. After that wo
rk is what the second dyno chart represent. He said he re-timed the engine
and that Stratus's timing specs are wonky and that's the main reason for t
he HP increase.
> >
> > Once the engine came back with more HP, I gradually increased t
he prop pitch and operated 100+ hours using about 4800 RPM for take off. I
t still exceeded the performance from before the repair and the lower RPM w
as still giving me almost 100HP on takeoff. The higher prop pitch increase
d cruise. In cruise at full throttle, the RPM sometimes went to about 5000
. Still well below Stratus redline. I also liked the "non-screaming" aspe
ct of the lower RPM.
> >
> > But the saga continues. About a year ago I was ground testing
the Stratus secondary electronic ignition and it malfunctioned. It started
firing completely out of sequence. As it bucked to a violent stop it crac
ked two engine mounts, so here we go again. I sent it back to Ram and he s
aid the engine was not damaged by the ignition event, but that I had excess
ive wear on the front cylinders due to "fuel washing" from, again, uneven f
uel flow from the Stratus carb setup. Ram (Ron Carr) no longer messes with
carbs due to this and he convinced me to have him install fuel injection a
nd electronic ignition. I just got the engine back and have many hours of
work to finish the installation. He ran a dyno test on the new setup and i
t maxes out around 108HP. I haven't scanned that result yet to attach.
> >
> > All this aside, the key thing to achieve before attempting flig
ht is to ensure you have a prop within all design specs (e.g. pitch and dia
meter) turning within design RPM specs.
> >
> > Good luck with your project.
> >
> > Ron Hansen
> > Los Angeles
> >
> >
> >
> >
> > [image.jpeg]
> >
> > On Mon, Oct 22, 2018 at 10:14 PM Trey Moran < nail13zg@centuryt
el.net mailto:nail13zg@centurytel.net > wrote:
> >
> > > > >
> > > Ran my EA-81 for the first time at full power with the hi
ghest rpm I could get at 5000. With the max being 5400, is 5000 what I shou
ld expect for static at 3000 ft and about 15 deg above standard temp?
> > >
> > >
> > > Has anyone developed a performance chart for various alti
tudes and temps?
> > >
> > >
> > >
> > > Trey Moran
> > >
> > > N13ZG
> > >
> > > > >
> > >
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