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Ed Anderson
Joined: 10 Jan 2006
Posts: 475
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N20DG
Joined: 02 Jan 2008
Posts: 61
Location: lancaster, texas
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 Posted: Thu Oct 07, 2010 11:55 am Post subject: Back On Line |
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5 by 5
In a message dated 10/7/2010 12:04:19 P.M. Central Daylight Time, eanderson(at)carolina.rr.com writes:
[quote][b]
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Ed Anderson
Joined: 10 Jan 2006
Posts: 475
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| Posted: Thu Oct 07, 2010 1:02 pm Post subject: Back On Line |
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Thanks, crashed two computers this summer (hard drives) and thought I would never get my data recovered (did finally) but my e mails and contacts turned out to be the hardest to recover.
Had not been getting anything over any of the lists with the exception of the Aeroelectric list and thought I might have screwed up the sign up.
Appreciate your response
Ed
From: RGent1224(at)aol.com (RGent1224(at)aol.com)
Sent: Thursday, October 07, 2010 3:52 PM
To: engines-list(at)matronics.com (engines-list(at)matronics.com)
Subject: Re: Back On Line
5 by 5
In a message dated 10/7/2010 12:04:19 P.M. Central Daylight Time, eanderson(at)carolina.rr.com (eanderson(at)carolina.rr.com) writes:
| Quote: | Test
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com
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href="[url=>http://www.matronics.com/Navigator?Engines-List====================================ms.matronics.com/]http://forums.matronics.com====================================tp://www.matronics.com/contribution">http://www.matronics.com/contribution==========='>http://www.matronics.com/Navigator?Engines-List">http://www.matronics.com/Navigator?Engines-List[/url]
ms.matronics.com/">http://forums.matronics.com
tp://www.matronics.com/contribution">http://www.matronics.com/contribution
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[quote]
href="http://www.matronics.com/Navigator?Engines-List">http://www.matronics.com/Navigator?Engines-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
[b]
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_________________
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com |
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wpaulin(at)usa.net
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| Posted: Thu Oct 07, 2010 6:57 pm Post subject: Back On Line |
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Question for all:
My son & I are looking for an RV-8. Our mission is split between cross country (must be IFR) & light sport aerobatics. I am a 1500 hr pvt pilot & he is a Marine F-18 pilot. Our questions are:
1. What are the advantages & disadvantages of injected vs. Carbureted?
2. What are the advantages & disadvantages of a constant speed prop.?
Thanks,
Bill
Sent from my iPhone
On Oct 7, 2010, at 12:00 PM, "Ed Anderson" <eanderson(at)carolina.rr.com (eanderson(at)carolina.rr.com)> wrote:
[quote] Test
Edward L. Anderson
Anderson Electronic Enterprises LLC
305 Reefton Road
Weddington, NC 28104
http://www.andersonee.com
http://www.eicommander.com
[b]
| | - The Matronics Engines-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:
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Kelly McMullen
Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ
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| Posted: Thu Oct 07, 2010 8:16 pm Post subject: Back On Line |
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1. Injected allows finer tuning of the mixture, more balanced power between cylinders and is less susceptible to any injuction icing if the airbox is properly designed with alternate air. That is an advantage in clouds. Carb is cheaper, is simpler, uses lower pressure pumps, but needs carb heat plumbed. However I don't think a carb works as well for inverted flight, but not certain on that point.
2. Constant speed gives better power for climb by maintaining best power rpm. On the other hand it is heavier and much more expensive than fixed pitch. You would need to ask RV group as to which is better for aerobatics and for wt and balance on that aircraft.
On Thu, Oct 7, 2010 at 7:53 PM, William L. Paulin <wpaulin(at)usa.net (wpaulin(at)usa.net)> wrote:
| Quote: | Question for all:
My son & I are looking for an RV-8. Our mission is split between cross country (must be IFR) & light sport aerobatics. I am a 1500 hr pvt pilot & he is a Marine F-18 pilot. Our questions are:
1. What are the advantages & disadvantages of injected vs. Carbureted?
2. What are the advantages & disadvantages of a constant speed prop.?
Thanks,
Bill
Sent from my iPhone
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#avg_ls_inline_popup { position:absolute; z-index:9999; padding: 0px 0px; margin-left: 0px; margin-top: 0px; width: 240px; overflow: hidden; word-wrap: break-word; color: black; font-size: 10px; text-align: left; line-height: 13px;} [quote][b]
| | - The Matronics Engines-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:
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
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wpaulin(at)usa.net
Guest
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| Posted: Fri Oct 08, 2010 5:47 am Post subject: Back On Line |
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Thanks. All the aerobatics I have done has been set the prop & forget it...so I have been assuming the constant speed choice was only important for xc flight & cost. And I thought that inverted was better injected even w/o inverted fuel & oil systems.
Any idea of the actual first cost &/or maintenance cost differences - carb v injected & constant speed v fixed pitch ( weight diff too)?
Bill
Sent from my iPhone
On Oct 7, 2010, at 11:13 PM, Kelly McMullen <apilot2(at)gmail.com (apilot2(at)gmail.com)> wrote:
[quote]1. Injected allows finer tuning of the mixture, more balanced power between cylinders and is less susceptible to any injuction icing if the airbox is properly designed with alternate air. That is an advantage in clouds. Carb is cheaper, is simpler, uses lower pressure pumps, but needs carb heat plumbed. However I don't think a carb works as well for inverted flight, but not certain on that point.
2. Constant speed gives better power for climb by maintaining best power rpm. On the other hand it is heavier and much more expensive than fixed pitch. You would need to ask RV group as to which is better for aerobatics and for wt and balance on that aircraft.
On Thu, Oct 7, 2010 at 7:53 PM, William L. Paulin <[url=mailto:wpaulin(at)usa.net]wpaulin(at)usa.net (wpaulin(at)usa.net)[/url]> wrote:
| Quote: | Question for all:
My son & I are looking for an RV-8. Our mission is split between cross country (must be IFR) & light sport aerobatics. I am a 1500 hr pvt pilot & he is a Marine F-18 pilot. Our questions are:
1. What are the advantages & disadvantages of injected vs. Carbureted?
2. What are the advantages & disadvantages of a constant speed prop.?
Thanks,
Bill
Sent from my iPhone
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#avg_ls_inline_popup { position:absolute; z-index:9999; padding: 0px 0px; margin-left: 0px; margin-top: 0px; width: 240px; overflow: hidden; word-wrap: break-word; color: black; font-size: 10px; text-align: left; line-height: 13px;}
[b]
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n801bh(at)netzero.com
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| Posted: Fri Oct 08, 2010 6:26 am Post subject: Back On Line |
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There a few things that need to be addressed here.
A 'float' type carb will NOT work inverted. A pressure carb or fuel injection with the correct flop tube in the fuel tank is your only option.
An engine with NO inverted oil system installed and placed up side down will starve the oil pick up tube instantly and bearing failure will quicky follow.
If you are going to do positive G manuevers then the motor does not know it is up side down and will continue to run.. One small mistake while performing any aerobatic move that lets the plane get into a negative G inverted position and your motor will not like it.... At ALL...
As for the prop, constant speed is preferred for aerobatics but the fixed pitch will work ok too. neither one is a deal breaker. Unlike the float carb and non inverted oil system motor.
IMHO. do not archive
Ben Haas
N801BH
www.haaspowerair.com
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