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Hi Buly,
There's a few things on the list he sent that doesn't sound quite
right. As long as I can do it without too much of a hassle, I guess I
will. The actual wording is "a ground run to max power in a nose high
attitude approaching an in flight stall". That sounds like an
invitation to do an inadvertent take-off if I ever heard one. When I
flew with the previous owner, the time from full power application to
lift off was about 5 seconds.
I think the A&P may be a problem also. I need one because I didn't
build the airplane. He sounded OK when I first talked to him, but more
recently he's been talking about checking to make sure the plane was
built to plans and stuff. I think he's supposed to check the brakes,
make sure the flaps aren't falling off, etc. I think his implication
is that the original builder could modify anything he wanted to, but
that I can't. This view seems to me to go beyond the roll of the A&P
as I understand it. I may have to find another one that understands
experimentals.
Bob W.
On Fri, 28 Apr 2006 22:35:30 -0400
Bulent Aliev <atlasyts@bellsouth.net> wrote:
Hi Bob, looks like you are making lots of power. My DAR never asked for high speed taxi, or even if I have run the engine. I don't think high speed taxi is a requirement.
Buly
On Apr 28, 2006, at 9:24 PM, Bob White wrote:
> I've been trying to finish up all the little nitpicking details and a
> few big details so I haven't ran my engine for quite a while. I made
> up my mind to get some time on it today. The weather was a bit nasty
> today with the winds kicking up to 20-30 kts (it wasn't that bad > when I
> started). I fired it up, and the first problem showed up - No
> charging. The new alternator mount from Pineapple racing is power
> coated and insulating the alternator from the block. I rigged up a
> jumper to fix that problem, and started the engine again. All was
> well. After taxiing around for 1/2 hour or so, I hit 4 hours run
> time. Bruce T.'s break in instructions was to run the engine 5 hours
> below 4500, but I couldn't stand the suspense any longer. I really
> wanted to find out what my static RPM was. So, I stopped it heading
> into the wind and gave it full throttle. I saw 6400 RPM and backed > off.
> The mixture was going a little lean, so I turned up the mixture and > got
> 6600 RPM. Max manifold pressure was a little over 23. (Don't forget
> that I'm at 6000 ft.) That's a little over the 6000 RPM limit > Bruce has
> for the 5 to 15 hour segment, but his regime seems quite a bit more
> conservative that some of the other break-in schemes I've heard on
> here. :) With this prop, I suspect I could exceed my RPM redline of
> 7500. If everything is looking OK, I may increase that to 7700.
>
> It seems like I'm a little under propped. This prop is 68 in. dia, > with
> a 78 in. pitch.
>
> I also found out that a little air flowing over the rads is a good
> thing. As I mentioned earlier, the wind was kicking up to about 30
> knots toward the end. While taxiing downwind, the water temp started
> climbing above 200 F. I shut the engine down, got out and pushed the
> plane around into the wind. After starting the engine back up, the
> temps dropped down to 160F.
>
> Now the next big question is how badly will my new cowling and cooling
> plenum screw up the cooling. I'm only about 1/2 done with the cowling
> mods and getting ready to jump back into some more fiberglass work.
> Apparently according to the checklist my DAR sent, I need to do a high
> speed taxi test. I'm not going to do that until I think the plane is
> airworthy, even if I don't have the paperwork!!
>
> Bob W.
>
> -- > http://www.bob-white.com
> N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
> Custom Cables for your rotary installation -
> http://www.roblinphoto.com/shop/
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
--
http://www.bob-white.com
N93BD - Rotary Powered BD-4 (first engine start 1/7/06)
Custom Cables for your rotary installation -
http://www.roblinphoto.com/shop/
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