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Ed,
things are definitely moving forward. This is a great weekend weather wise
to get my priming done, or at least the first round of it.
I kept the engine turned over quite often. Just about every time I worked
on the plane I would turn the prop a couple times. I got turn over at least
once or twice a week. I did a little tuning yesterday, only for a couple
MAP points, but it went well, and definitely makes a difference in the
smoothness.
The prop is a blade 72" Ivoprop Magnum. It has the high pitch blades, but I
don't remember the range. I know it goes up to 90 on the pitch, but I don't
remember the bottom number. I had already bought the prop when I heard
about another incident with cracking blades. I though that problem was
behind them, but it was on a Lycoming, so I'm hoping that I won't have any
problems running on the smoother rotary. I really like the concept of the
design, and down the road I can add the in-flight adjust motor for only
$900. Right now, it is what they call a ground quick adjust. I'm not sure
how much pitch I have right now. I cranked in only a little bit, but the
blades has a pretty good pitch to them to start with. I will be keeping a
very wary eye on the prop for any signs of cracking.
I'll just adjust the prop to get the proper static RPM.
2 questions. What RPM are you using for idle ? What static RPM is best for
a starting point ? I was thinking that it was in the 4800-5000 RPM range,
but I may be wrong.
Steve Brooks
-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]On
Behalf Of Ed Anderson
Sent: Friday, March 26, 2004 6:57 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: It Still Runs
Hi Steve,
Always good to hear that things have not regressed after 4 months {:>).
I once let my old 6 port engine remain idle for only six weeks and the apex
seals oxidized in their slots. After a week of poking through the exhaust
port, I managed to free 5 of the 6, but eventually had to take the engine
off to find that leaving the intake manifold off after flooding the engine
(HALTECH EFI went bad and opened the injectors) apparently caused the apex
seals to lightly rust. The gasoline that flooded the engine apparently
washed the oil off the seals and my having taken the intake manifold off
left it exposed to some hot and high humidity days.
Moral of the story, I don't leave the intakes exposed especially if you
might have flooded the engine and washed the protective oil coating off. I
turn the engine over ever two weeks regardless of whether I fly or not.
Perhaps a drag chute is in order. Always nice to have that kind of power.
What is your propeller parameters?
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
From: "Steve Brooks" <steve@tsisp.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, March 26, 2004 6:45 PM
Subject: [FlyRotary] It Still Runs
> I took my plane outside today after 4 months of being inside doing the
> finishing. It is now ready to be primed, and the weather is good, so I
took
> everything outside to work on it. It had been 4 months since I had last
> started the rotary, and it hadn't been started since I plumbed the turbo
> into the intake system, so I was anxious to see how that was going to work
> out.
>
> The engine started after about 2 revolutions, and though a little rough to
> start, smoothed out nicely. The mixture gauge shows it's a little on the
> rich side, but I hadn't done much tuning on the EC2, since the turbo was
> connected up to the intake yet. I'm going to have to read Tracy's
> instructions again on how to do it, so that I get it running a little
> leaner. It's so rich that the control seems to have little effect.
>
> At ant rate, I ran the engine 2 or three times, topping off the coolant
each
> time. On the third run, I ran it up to 3500, for a few seconds, and then
> back down (it's idling about 2000 rpms). The next run up, I ran it up to
> 4000, and with the brakes locked, the tires started sliding in the grass.
> WOW, does the turbo add power ! I'll run it some more tomorrow, but I'll
> take it to the driveway, which is asphalt before running up too many RPM's
>
> I can't wait to fly this thing. It seems to have more power than I
imagined
> it would, and it should scoot down the runway pretty good.
>
> Steve Brooks
> Cozy MKIV 13BT
> ready for primer (great - something else to sand)
>
>
> >> Homepage: http://www.flyrotary.com/
> >> Archive: http://lancaironline.net/lists/flyrotary/List.html
>
>> Homepage: http://www.flyrotary.com/
>> Archive: http://lancaironline.net/lists/flyrotary/List.html
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