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Hi Matt.
We have just last week completed the 40 hours of Phase #1.
Now headed into our summer here in Perth Western Australia.
Our lowest average temps are 10C / 50F in July with a few days getting at low as 4C / 39F
highest average temps are 31C / 88F in Feb with a few days maxing around 40C / 104F
Flying in cooler conditions at present with cowl flaps fixed open our OIL temps are about 15C above H2O temps so we are going to enlarge the Oil inlet from ~9in2 to ~14in2.
Im hoping that in bringing our OIL down it will bring the H2O down a little also.
Then we will look into reshaping and mechanising our cowl flaps to enable us to controll temps while reducing cooling drag.
Also considering a prop change, We currently have an inflight adjustable 66.5 inch Prop.
With the 2.85:1 RD1-C ratio and a chosen redline of 7500RPM our prop tips are travelling pretty slow - Tracy recommended the RD1-C ratio only for props above 72 inches.
So looking into a secondhand 72 inch MT, which makes clearance as low as I’m comfortable with.
Steve
Glasair Super IIRG Renesis 4 port RD1-C EC2/3 EM3
> On 20 Oct 2020, at 10:37 pm, Matt Boiteau mattboiteau@gmail.com <flyrotary@lancaironline.net> wrote:
>
> Steve = Using Megasquirt for ECU. How is your flight testing going?
>
> Jeff = I meant prop rpm. Using Neil's PSRU, which is 3.17. I just bumped up my idle to around 800prop (2500engine). I forgot to add, I am P-Port which causes a need for higher idle.
>
> Lynn = Idle can be that high? Usually I see rotary idle around the 10-18 range, but that is for a car. Little different with a prop on 100% of the time.
>
> Neil = That is a nice idle. I forget, are you P-Port? What is your timing at?
>
> Dave = 35 all time? Doesn't that seem really high for rotary. Pump gas? Lynn was saying 24 degrees for 87 octane.
>
> - Matt Boiteau
>
>
> On Mon, Oct 19, 2020 at 12:11 AM Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
> Hi there Matt and all
>
> What computer is controlling your fuel and spark Matt?
>
> Ive left the timing of the EC2 on the Renesis 4 port at Tracy’s default and haven’t changed it but was wanting to do some experimenting.
> I take it that the timing setting in the EC2/3 will vary the whole timing curve over the rpm/load envelope.
>
> Cheers
>
> Steve Izett
> Renesis 4 port EC2 EM3 RD1-C
>
>
>
>
> > On 19 Oct 2020, at 10:21 am, Matt Boiteau mattboiteau@gmail.com <flyrotary@lancaironline.net> wrote:
> >
> > Split table.
> >
> > - Matt Boiteau
> >
> >
> > On Sun, Oct 18, 2020 at 10:17 PM Matt Boiteau mattboiteau@gmail.com <flyrotary@lancaironline.net> wrote:
> >
> > What AFR and timing are people running for idle, taxi, takeoff, climb, cruise, descent?
> >
> > idle = 11afr, 20 timing
> > I seem to have to be around 11afr for it to stay alive. Still trying to get it to idle around 600rpm, maybe bump it up to 700rpm to be smoother without dieing and shaking apart.
> >
> > taxi / takeoff / climb = 13.2afr, 28 timing
> >
> > cruise - not sure aft, 28 timing
> >
> > decent - not sure aft, 32 timing
> > Not sure what the plane likes. I tried 14afr, but the MAP really get's low and engine shakes. Guessing it should be more rich?
> >
> > I attached the timing table and split rotary table (second email). Not sure how to tune timing, I just want safe values for now.
> >
> >
> > - Matt Boiteau
> > --
> > Homepage: http://www.flyrotary.com/
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>
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