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Bill Strahan
Joined: 20 Aug 2008
Posts: 145
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 Posted: Wed Jun 16, 2010 4:17 pm Post subject: First long flight |
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I took my stepdaughter up to visit her dad in St. Louis today. Now THIS is what I wanted the Lightning for!
I left for the airport at 6:30 this morning and covered right at 1000 miles (roundtrip from Dallas) and was back at my house before 4:00. Less than 8 hours flying time, and less than 30 gallons burned to cover 1000 miles! And that was in less than ideal conditions with some weather dodging, and a headwind on the way back that was much stronger than the tailwind on the way out.
I tried my best to minimize the headwind though, using O2 and cruising at 16,500 on the way back. I always throttle back enough to get even EGTs across the board, which meant at that altitude I was only doing about 120 knots, but doing it on just under 4 GPH. Gotta love flying high, and this bird just keeps climbing.
My Grumman would have required a fuel stop due to the headwind, and the trip would have ended up taking MUCH longer.
Sign me up for the 4 seat, twin 3300 "Double-Strike" Lightning.  Think of it this way, Arion would sell twice as many engines for each airplane sold! (I can dream, can't I?)
And while I'm dreaming, I sure hope someone fixes the induction issues I experience. If I could run full throttle with even fuel distribution, I'd be even happier.
And I haven't even gone into detail about the guys at the airport who came over to talk to me because the guy who fueled the plane went in and told them I had come from Dallas and only took on 15 gallons. They didn't believe him. 
Bill
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IFLYSMODEL(at)AOL.COM
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| Posted: Wed Jun 16, 2010 4:24 pm Post subject: First long flight |
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Hey Bill: I agree it is great for long or short flights. I have flown to Shelbyville from here in Frostproof 3 times now, each time has been less than 4.5 hrs and uses 23 gallons of fuel.
Lynn
In a message dated 6/16/2010 8:18:33 P.M. Eastern Daylight Time, bill(at)gdsx.com writes:
| Quote: | --> Lightning-List message posted by: "Bill Strahan" <bill(at)gdsx.com>
I took my stepdaughter up to visit her dad in St. Louis today. Now THIS is what I wanted the Lightning for!
I left for the airport at 6:30 this morning and covered right at 1000 miles (roundtrip from Dallas) and was back at my house before 4:00. Less than 8 hours flying time, and less than 30 gallons burned to cover 1000 miles! And that was in less than ideal conditions with some weather dodging, and a headwind on the way back that was much stronger than the tailwind on the way out.
I tried my best to minimize the headwind though, using O2 and cruising at 16,500 on the way back. I always throttle back enough to get even EGTs across the board, which meant at that altitude I was only doing about 120 knots, but doing it on just under 4 GPH. Gotta love flying high, and this bird just keeps climbing.
My Grumman would have required a fuel stop due to the headwind, and the trip would have ended up taking MUCH longer.
Sign me up for the 4 seat, twin 3300 "Double-Strike" Lightning. Think of it this way, Arion would sell twice as many engines for each airplane sold! (I can dream, can't I?)
And while I'm dreaming, I sure hope someone fixes the induction issues I experience. If I could run full throttle with even fuel distribution, I'd be even happier.
And I haven't even gone into detail about the guys at the airport who came over to talk to me because the guy who fueled the plane went in and told them I had come from Dallas and only took on 15 gallons. They didn't believe him.
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301485#301485===============================================
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n45bm(at)yahoo.com
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| Posted: Wed Jun 16, 2010 6:04 pm Post subject: First long flight |
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Hi Bill,
33.3 mpg is not bad at all and TAS was good too, I imagine. I've been researching the Rotec TBI-40-S carburetor that would be a perfect fit for the 3300 Jabiru engine. From all I've read, it provides exceptional atomization which would provide EGT's and CHT's much closer together, and with its easy mixture control, you can run the engine lean of peak. That alone would save you about 1 gallon per hour and preserve that pricey engine. That's what I'm gonna put in mine after I get my kits sometime next month. I'm chomping at the bit to get started.
Now I gotta find a buyer for my Corby Starlet that was in last month's newsletter.
Bernardo Melendez
Houston, TX
Corby Starlet n45bm
--- On Wed, 6/16/10, Bill Strahan <bill(at)gdsx.com> wrote:
| Quote: |
From: Bill Strahan <bill(at)gdsx.com>
Subject: First long flight
To: lightning-list(at)matronics.com
Date: Wednesday, June 16, 2010, 7:17 PM
--> Lightning-List message posted by: "Bill Strahan" <[url=/mc/compose?to=bill(at)gdsx.com]bill(at)gdsx.com[/url]>
I took my stepdaughter up to visit her dad in St. Louis today. Now THIS is what I wanted the Lightning for!
I left for the airport at 6:30 this morning and covered right at 1000 miles (roundtrip from Dallas) and was back at my house before 4:00. Less than 8 hours flying time, and less than 30 gallons burned to cover 1000 miles! And that was in less than ideal conditions with some weather dodging, and a headwind on the way back that was much stronger than the tailwind on the way out.
I tried my best to minimize the headwind though, using O2 and cruising at 16,500 on the way back. I always throttle back enough to get even EGTs across the board, which meant at that altitude I was only doing about 120 knots, but doing it on just under 4 GPH. Gotta love flying high, and this bird just keeps climbing.
My Grumman would have required a fuel stop due to the headwind, and the trip would have ended up taking MUCH longer.
Sign me up for the 4 seat, twin 3300 "Double-Strike" Lightning. Think of it this way, Arion would sell twice as many engines for each airplane sold! (I can dream, can't I?)
And while I'm dreaming, I sure hope someone fixes the induction issues I experience. If I could run full throttle with even fuel distribution, I'd be even happier.
And I haven't even gone into detail about the guys at the airport who came over to talk to me because the guy who fueled the plane went in and told them I had come from Dallas and only took on 15 gallons. They didn't believe him.
Bill
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301485#301485
nbsp; --> http://www.matronics.com/Navigator?Lightning-Listhttp://forums.matr - List Contribution Web Site; &nb; http:========================
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[quote][b]
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Bill Strahan
Joined: 20 Aug 2008
Posts: 145
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| Posted: Wed Jun 16, 2010 7:29 pm Post subject: Re: First long flight |
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Soooo, would you like to buy my TBI-40? I'll even throw in the adapter plate that mates it to the SCAT tubing from the original installation so it's a drop-in replacement for the Bing.
Plus I've got the AN to pipe 90 degree elbow and 1/4NPT to barbbed fitting so the fuel line will connect unmodified.
Make an offer.
As for me, I'm back to the Hacman and Bing. I determined from my limited flying with the Rotec that the fuel distribution problem is not occurring at the point of fuel intake, it is further downstream. Both the Bing and the Rotec exhibited the same uneven distribution at higher throttle settings.
And I've run both with a K&N filter in place of the regular intake, so I eliminated any possibility of swirl from the filter box or the SCAT tubing. I also tried multiple intakes tubes from the filter box.
In total, I tried 4 different tubes from filter box to carb/TBI. I tried the K&N instead of the regular intake. And I've tried both Bing and the Rotec. In ALL cases, the fuel distribution at high throttle settings favors one side of the engine over the other.
Perhaps if someone will create an intake plenum to replace the Jabiru intake and combine that with direct port injection then I'll invest some more time adopting that, but I've spent dozens of hours on the intake and have just decided to leave it as is. The airframe has more potential than I can wring out of it with that limitation, but my focus is on flying first and any experimentation I do will be in the area of aerodynamic mods.
Well, that and the JATO system I'm working on...
Bill
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n45bm(at)yahoo.com
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| Posted: Wed Jun 16, 2010 8:54 pm Post subject: First long flight |
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I suspected such problems with such a short intake system, and I agree that even fuel distribution would be an issue regardless which carburetor is used in its current designed location. But I also thought that fuel atomization would be better with the TBI-40. However, I have no experience with either the Rotec or the Bing. A fuel injection system is my preference, but apparently there is none for the Jab, to my knowledge, or is there?
Most aero carbs are under the engine, with a longer intake pipe to the cylinders. Is there space or has anyone investigated putting the carb, Bing, Rotec or whatever under the engine, like most aero engines? Inquiring minds would like to know.
Right now, I'm shooting from the hip without a gun in my holster and I've yet to receive my kit and engine, but knowing as much info as I can gather even before I start can't hurt.
I didn't know that you had a Rotec carb for sale. That's good info to keep in mind.
As to the JATO system....I was thinking something along the lines of a high tow, like they use for model sailplanes. That way, I won't have the drag of the JATO pods. Now if I can just find a long enough rubber band... and someone to pull it.
Bernardo
--- On Wed, 6/16/10, Bill Strahan <bill(at)gdsx.com> wrote:
| Quote: |
From: Bill Strahan <bill(at)gdsx.com>
Subject: Re: First long flight
To: lightning-list(at)matronics.com
Date: Wednesday, June 16, 2010, 10:29 PM
--> Lightning-List message posted by: "Bill Strahan" <[url=/mc/compose?to=bill(at)gdsx.com]bill(at)gdsx.com[/url]>
Soooo, would you like to buy my TBI-40? I'll even throw in the adapter plate that mates it to the SCAT tubing from the original installation so it's a drop-in replacement for the Bing.
Plus I've got the AN to pipe 90 degree elbow and 1/4NPT to barbbed fitting so the fuel line will connect unmodified.
Make an offer.
As for me, I'm back to the Hacman and Bing. I determined from my limited flying with the Rotec that the fuel distribution problem is not occurring at the point of fuel intake, it is further downstream. Both the Bing and the Rotec exhibited the same uneven distribution at higher throttle settings.
And I've run both with a K&N filter in place of the regular intake, so I eliminated any possibility of swirl from the filter box or the SCAT tubing. I also tried multiple intakes tubes from the filter box.
In total, I tried 4 different tubes from filter box to carb/TBI. I tried the K&N instead of the regular intake. And I've tried both Bing and the Rotec. In ALL cases, the fuel distribution at high throttle settings favors one side of the engine over the other.
Perhaps if someone will create an intake plenum to replace the Jabiru intake and combine that with direct port injection then I'll invest some more time adopting that, but I've spent dozens of hours on the intake and have just decided to leave it as is. The airframe has more potential than I can wring out of it with that limitation, but my focus is on flying first and any experimentation I do will be in the area of aerodynamic mods.
Well, that and the JATO system I'm working on...
Bill
Read this topic online here:
http://forums.matronics.comt; http://www.matronics.com/contribution============
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debandpete(at)bigpond.com
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| Posted: Thu Jun 17, 2010 4:45 pm Post subject: First long flight |
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There is at least one Lightning in Australia running EFI on its 3300. Should be an article about it coming soon in the Lightning newsletter.
Peter
On 17/06/10 14:54, Bernard Melendez, Jr. wrote: [quote] I suspected such problems with such a short intake system, and I agree that even fuel distribution would be an issue regardless which carburetor is used in its current designed location. But I also thought that fuel atomization would be better with the TBI-40. However, I have no experience with either the Rotec or the Bing. A fuel injection system is my preference, but apparently there is none for the Jab, to my knowledge, or is there?
[b]
| | - The Matronics Lightning-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Lightning-List |
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n45bm(at)yahoo.com
Guest
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| Posted: Thu Jun 17, 2010 6:23 pm Post subject: First long flight |
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Thanks Peter.
Bernardo
--- On Thu, 6/17/10, Deb and Peter Zweck <debandpete(at)bigpond.com> wrote:
[quote]
From: Deb and Peter Zweck <debandpete(at)bigpond.com>
Subject: Re: Re: First long flight
To: lightning-list(at)matronics.com
Date: Thursday, June 17, 2010, 7:43 PM
There is at least one Lightning in Australia running EFI on its 3300. Should be an article about it coming soon in the Lightning newsletter.
Peter
On 17/06/10 14:54, Bernard Melendez, Jr. wrote: [quote] I suspected such problems with such a short intake system, and I agree that even fuel distribution would be an issue regardless which carburetor is used in its current designed location. But I also thought that fuel atomization would be better with the TBI-40. However, I have no experience with either the Rotec or the Bing. A fuel injection system is my preference, but apparently there is none for the Jab, to my knowledge, or is there?
[b]
| | - The Matronics Lightning-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Lightning-List |
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