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From: Jerry Hey <jerryhey@earthlink.net>
Subject: Re: [FlyRotary] Re: Engine Run and Static RPM Report
Date: Mon, 1 May 2006 07:43:34 -0400
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>

Bob,  Did you notice the EGT during the WOT?    Jerry

On Apr 28, 2006, at 11:13 PM, Bob White wrote:

> 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/
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/