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1. 03:52 PM - Re: Lightning-List Digest: 3 Msgs - 04/21/11 (Jay Schmitt)
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| Subject: | RE: Lightning-List Digest: 3 Msgs - 04/21/11 |
Hi Tex=2C I run 100LL exclusively in my Esqual ( Jabiru 3300 ) with no plu
g fowling and no other problems...........Jay N117DA
> Date: Thu=2C 21 Apr 2011 23:56:57 -0700
> From: lightning-list@matronics.com
> To: lightning-list-digest@matronics.com
> Subject: Lightning-List Digest: 3 Msgs - 04/21/11
>
> *
>
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> Lightning-List Digest Archive
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> Total Messages Posted Thu 04/21/11: 3
> ----------------------------------------------------------
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>
> Today's Message Index:
> ----------------------
>
> 1. 09:35 AM - Re: Airflow splitter for EGTs (flylightning)
> 2. 10:04 AM - Jabiru Engine Class may 13-15th (flylightning)
> 3. 06:07 PM - 100ll vrs mogas (Tex Mantell)
>
>
>
> ________________________________ Message 1 ______________________________
_______
>
>
> Time: 09:35:38 AM PST US
> From: "flylightning" <info@flylightning.net>
> Subject: RE: Lightning-List: Airflow splitter for EGTs
>
> Clive=2C
>
> I think you could fit it to the esqual but it would require a reversal
> of the SCAT at the firewall to get back to the airbox. This shouldn't
> cause a problem because the splitter is at the carb.
> The splitter is mounted like + I haven't tried it the other way. Haven't
> thought about it really. IT work very well in our set up and I know that
> we have seen uneven EGTS in the lighting.
> I really don't want to suggest a solution if others aren't having a
> problem.
>
> Nick
>
> -----Original Message-----
> From: owner-lightning-list-server@matronics.com
> [mailto:owner-lightning-list-server@matronics.com] On Behalf Of James=2C
> Clive R
> Sent: Wednesday=2C April 20=2C 2011 11:22 PM
> Subject: RE: Lightning-List: Airflow splitter for EGTs
>
> This looks interesting and thanks for sharing it. The WOT uneven running
> on my Esqual's 3300 went away with a smooth bend though I've never moved
> to the next step=2C chasing EGT's.
>
> I had always wondered if the place for the 'straightening device' was in
> a straight line to the carb.
> In industrial flow measurement we always have the straightening bundle
> after the bend in a straight line to the measuring device.
> The bundle is usually just that=2C a bundle of tubes inside the pipe=2C t
hat
> would be the most efficient way of straightening the flow but in our
> case would be a little restrictive of airflow unless the tubes could be
> really thin (like drinking straws).
> Unfortunately there is no space for the fibreglass tube on the Esqual
> and I imagine some other engine installations=2C though I think something
> of the style of this could be fashioned in the last part of the bend..
>
> One question=2C does the orientation of the cross of the splitter have an
y
> effect. + or x ?
>
> Nick=2C have you considered=2C forwarding on these results to the engine
> lists? jabiruengines@yahoogroups.com jabiruengine-list@matronics.com
> given the benefit that would likely apply to many installations.
>
> Regards=2C Clive
>
>
> _____
>
> From: owner-lightning-list-server@matronics.com
> [mailto:owner-lightning-list-server@matronics.com] On Behalf Of
> flylightning
> Sent: 20 April 2011 20:06
> Subject: Lightning-List: Airflow splitter for EGTs
> Group=2C
>
> For some time now Bill Browns from IL has been playing with intake
> splitters to even out the large Difference in EGTS from left to right
> bank.
> One of the last designs=2C a four way splitter=2C was purposed to go in t
he
> outlet tube of the Airbox to the carb. I know that Bill and a few others
> have testing it there with ok results.
>
> A little back story here. From day one we have always attached the SCAT
> hose directly to the Carb in a Lightning. The Jabiru manual says to have
> a clean bore tube attached to the carb than the scat hose.
> For one reason or another I paid no attention to this and didn't do it.
> Was as of late=2C say the last 6 planes or so out of SYI I have installed
> a smooth bore fiberglass tube to the carb.
> It does make installing the SCAT easier but did nothing for my EGTS=2C
> bummer. So I thought well why not stick the Splitter in the tube right
> in front of the CARB=2C it can't get any worse=2C and the air certainly
> can't tumble after it no room.
>
> So a test flight with out The splitter installed and just the fiberglass
> tube revealed EGTs as follows at WOT. Lowest was 1050 degrees and the
> highest was near 1400 degrees. Yep that is what we see with out the
> tube.
> Back on the ground and insert the Splitter. WOW what a difference=2C low
> EGTs now 1180 degrees and the high was 1240 degrees at WOT!!! Never seen
> that. Full power in level flight showed the same results. Cruise was
> also much better.
> So this is just chance right one install=2C cant be the same on the next
> plane right?
>
> Note the 2 pictures=2C One shows the 4 way splitter insert=2C and a Split
ter
> built in to a aluminum tube. The second picture is where the smooth bore
> tube attaches=2C in this case a fiberglass tube for the insert.
>
> The splitter built in to the tube is intended to be a production style
> finished part with no insert. So I stuck this on the newest LS-1 we are
> flying. Same idea just looks better.
>
> WOW again=2C same results. WOT EGT low 1140 degrees=2C High EGT was 1220
> Degrees. The rest of course in the middle. The spread was great just a
> little rich=2C so swap out the 255 main jet to a 250 main jet with better
> leaner temps.
> With the 250 main jet we see 1220 LOW egt and 1280 High EGT at full
> power WOT. That's outstanding in my book.
>
> So with two plane flying with identical results I think we are on to
> solving the uneven fuel distribution and full throttle. I have sent a
> few more of these out to other dealers and Lighting builders to play
> with ( umm test) and see what happens.
>
> We just have to find some one to build them for us=2C unless Bill wants t
o
> mass produce them in his basement!
>
> Nick
>
>
> ________________________________ Message 2 ______________________________
_______
>
>
> Time: 10:04:00 AM PST US
> From: "flylightning" <info@flylightning.net>
> Subject: Lightning-List: Jabiru Engine Class may 13-15th
>
> The May engine class given 13-15th still has available slots.
>
> Mark and Yours truly are the teachers and would love to see you there.
>
> Go to www.usjabiru.com <http://www.usjabiru.com/> and click on the link
> for the seminar at the bottom of the home page. Fill out the attendance
> sheet and come on down to TN.
>
> Thank you=2C
> Nick Otterback
> Arion Aircraft
>
> ________________________________ Message 3 ______________________________
_______
>
>
> Time: 06:07:36 PM PST US
> From: "Tex Mantell" <wb2ssj@frontiernet.net>
> Subject: Lightning-List: 100ll vrs mogas
>
> I now have over 100 hrs on the lightning and its all on 93 oct car gas.
> Everything is next to perfect and runs great. It took a while to get the
> proper jetting. Now I have to switch to 100 LL and don't know what to
> expect. The last few tanks of fuel have been 100LL and It seems to run
> even better. Its hard to tell anything with the outside temps have been
> 35 degrees or lower. Has anyone made the change and what did you
> experience? Any comments would be appreciated.
> Tex
>
>
>
>
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