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john_ross25(at)yahoo.com
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 Posted: Tue Jun 24, 2008 12:49 pm Post subject: W/B issues |
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Ladies and Gentlemen,
I have purchased a Series 7 that is covered, painted, windscreen installed, and ready for an engine. The problem is that the aircraft was built with the weight of a 912 in mind. Therefore the wings are swept back the 1-1/2 degrees that the plans call for. I know some of you will think I am nuts, but I have a 0-200 in the corner ready to go. What adjustments need to be made to accommodate this heavy engine. If I can get the c/g where it needs to be, will the plane be handle well enough with the reverse wing sweep? The battery is already mounted to the front of the firewall and I don't necessarily like the idea of moving it to the rear. But if it needs to be done, I will do it. Any replies would be helpful. Thanks in advance.
John Ross
Green Bay, WI.
Series 7, O-200?
[quote][b]
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57_kid
Joined: 27 Aug 2006
Posts: 50
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| Posted: Tue Jun 24, 2008 1:11 pm Post subject: W/B issues |
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John
I was in the same situation only I was the builder planning to go with 912. Then I had a change of heart, after the wing sweep had already been set, and went with the 0-200 so I had to install the battery just behind the luggage compartment , not the optimal spot as I was worried about battery acid IF I were to have a hard landing or worse a crash. I ended up using a gel type battery ,no acid to worry about just the weight of the battery flying forward if something should happen. The battery is in a battery box that is bolted in quite well ( but a bear to get at) so all in all it worked out well and I have not been disappointed in the decision to use the 0-200. just my .02
Steve
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of John Ross
Sent: Tuesday, June 24, 2008 3:46 PM
To: kitfox-list(at)matronics.com
Subject: W/B issues
Ladies and Gentlemen,
I have purchased a Series 7 that is covered, painted, windscreen installed, and ready for an engine. The problem is that the aircraft was built with the weight of a 912 in mind. Therefore the wings are swept back the 1-1/2 degrees that the plans call for. I know some of you will think I am nuts, but I have a 0-200 in the corner ready to go. What adjustments need to be made to accommodate this heavy engine. If I can get the c/g where it needs to be, will the plane be handle well enough with the reverse wing sweep? The battery is already mounted to the front of the firewall and I don't necessarily like the idea of moving it to the rear. But if it needs to be done, I will do it. Any replies would be helpful. Thanks in advance.
John Ross
Green Bay, WI.
Series 7, O-200?
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john_ross25(at)yahoo.com
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| Posted: Tue Jun 24, 2008 1:39 pm Post subject: W/B issues |
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Steve,
The manual states that the battery should be located in the aft section of the fuselage when using the 0-200. Your mount did not require any balast?
John
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jdmcbean(at)kitfoxaircraf
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| Posted: Tue Jun 24, 2008 4:20 pm Post subject: W/B issues |
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John,
The wing sweep for a 912 should be 0 degree sweep.. and the O-200 1 degree forward.. If your is swept back 1.5 degrees there may be other issues to consider. Putting the O-200 on the front with a zero degree sweep is possible but if the wings are swept back I would be very cautious.. please give us a call if you have any questions.
Fly Safe !!
John & Debra McBean
Ph 208.337.5111
www.kitfoxaircraft.com
"The Sky is not the Limit... It's a Playground"
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of John Ross
Sent: Tuesday, June 24, 2008 2:46 PM
To: kitfox-list(at)matronics.com
Subject: W/B issues
Ladies and Gentlemen,
I have purchased a Series 7 that is covered, painted, windscreen installed, and ready for an engine. The problem is that the aircraft was built with the weight of a 912 in mind. Therefore the wings are swept back the 1-1/2 degrees that the plans call for. I know some of you will think I am nuts, but I have a 0-200 in the corner ready to go. What adjustments need to be made to accommodate this heavy engine. If I can get the c/g where it needs to be, will the plane be handle well enough with the reverse wing sweep? The battery is already mounted to the front of the firewall and I don't necessarily like the idea of moving it to the rear. But if it needs to be done, I will do it. Any replies would be helpful. Thanks in advance.
John Ross
Green Bay, WI.
Series 7, O-200?
[quote][b]
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john_ross25(at)yahoo.com
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| Posted: Tue Jun 24, 2008 4:49 pm Post subject: W/B issues |
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John,
Good catch. The wings are set at Zero. That was a typo. I will call you anyway. Thanks for your attention.
John
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n85ae
Joined: 14 Mar 2007
Posts: 403
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| Posted: Wed Jun 25, 2008 6:37 am Post subject: Re: W/B issues |
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I have an IO-240B, with 1 degree forward sweep. I have a battery plus
ballast in the tail. Without the wing sweep I think balance might be a
real problem with my engine.
I think it is possible to change the wing sweep if you use the cuffs that
I think Murle Williams was selling.
Regards,
Jeff.
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patreilly43(at)hotmail.co
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| Posted: Wed Jun 25, 2008 7:34 am Post subject: W/B issues |
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Kitfoxers, I am rebuilding a Mod 3 that originally was built with a 912. I am installing a 582. I already have moved the battery box to behind the firewall from behind the seat. I know I will need to do a weight and balance when I finish. Now I hear different engines (weight ) require different "wing sweep". Will I need to alter my wing mounts to accomodate the 582. Why do different engines require different wing sweep? Is it because the heavier engine is so much heavier that weight and balance can not be brought into spec without changing center of lift by sweeping wings farther forward? I think I have answered my own question here. I didn't really understand different wing sweep requirements until I formulated this question. I still wouldn't mind confirmation of "wing sweep" characteristics. And, wonder if the building of the original kit called for different wing sweep for 912 vs. 582 engines? Or, if Mod 3 wing sweep was same for 912 and 582. Datum point or W/B spec would not be same with different wing sweep, right?
Pat Reilly
Mod 3 582 Rebuild
Rockford, IL
| Quote: | Subject: Re: W/B issues
From: n85ae(at)yahoo.com
Date: Wed, 25 Jun 2008 07:37:08 -0700
To: kitfox-list(at)matronics.com
--> Kitfox-List message posted by: "n85ae" <n85ae(at)yahoo.com>
I have an IO-240B, with 1 degree forward sweep. I have a battery plus
ballast in the tail. Without the wing sweep I think balance might be a
real problem with my engine.
I think it is possible to change the wing sweep if you use the cuffs that
I think Murle Williams was selling.
Regards,
Jeff.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=189749#189749
&========================>
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[quote][b]
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jdmcbean(at)kitfoxaircraf
Guest
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| Posted: Wed Jun 25, 2008 11:26 am Post subject: W/B issues |
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Pat,
The wing sweep came into existence with the Series 5 aircraft when installing the heavier certified engines (O-200, IO-240 and Lycoming O-235) The earlier models typically had a zero degree sweep.
Fly Safe !!
John & Debra McBean
Ph 208.337.5111
www.kitfoxaircraft.com
"The Sky is not the Limit... It's a Playground"
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of patrick reilly
Sent: Wednesday, June 25, 2008 9:29 AM
To: kitfox-list(at)matronics.com
Subject: RE: Re: W/B issues
Kitfoxers, I am rebuilding a Mod 3 that originally was built with a 912. I am installing a 582. I already have moved the battery box to behind the firewall from behind the seat. I know I will need to do a weight and balance when I finish. Now I hear different engines (weight ) require different "wing sweep". Will I need to alter my wing mounts to accomodate the 582. Why do different engines require different wing sweep? Is it because the heavier engine is so much heavier that weight and balance can not be brought into spec without changing center of lift by sweeping wings farther forward? I think I have answered my own question here. I didn't really understand different wing sweep requirements until I formulated this question. I still wouldn't mind confirmation of "wing sweep" characteristics. And, wonder if the building of the original kit called for different wing sweep for 912 vs. 582 engines? Or, if Mod 3 wing sweep was same for 912 and 582. Datum point or W/B spec would not be same with different wing sweep, right?
Pat Reilly
Mod 3 582 Rebuild
Rockford, IL
> Subject: Re: W/B issues
> From: n85ae(at)yahoo.com
> Date: Wed, 25 Jun 2008 07:37:08 -0700
> To: kitfox-list(at)matronics.com
>
> --> Kitfox-List message posted by: "n85ae" <n85ae(at)yahoo.com>
>
> I have an IO-240B, with 1 degree forward sweep. I have a battery plus
> ballast in the tail. Without the wing sweep I think balance might be a
> real problem with my engine.
>
> I think it is possible to change the wing sweep if you use the cuffs that
> I think Murle Williams was selling.
>
> Regards,
> Jeff.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=189749#189749
>
>
>
&========================
>
>
> | Quote: | | http://www.matronics.com/Navigator?Kitfox-List |
0123456789
No virus found in this incoming message. Checked by AVG. 270.4.1/1518 - Release Date: 6/25/2008 9:46 AM [quote][b]
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57_kid
Joined: 27 Aug 2006
Posts: 50
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| Posted: Wed Jun 25, 2008 2:43 pm Post subject: W/B issues |
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John
I guess I should have mentioned that have a series 5 and no to the ballast . I did install the speedster package on my 5 so I think because of the ribs that had to be installed on the , horizontal, elevator ,vertical and rudder that might be why I did not need any. If I could do it all over I would have put the battery under the horizontal stabilizer.
Steve
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of John Ross
Sent: Tuesday, June 24, 2008 4:36 PM
To: kitfox-list(at)matronics.com
Subject: Re: W/B issues
Steve,
The manual states that the battery should be located in the aft section of the fuselage when using the 0-200. Your mount did not require any balast?
John
---
| | - The Matronics Kitfox-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?Kitfox-List |
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patreilly43(at)hotmail.co
Guest
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| Posted: Wed Jun 25, 2008 3:12 pm Post subject: W/B issues |
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John & Deb, Thanks for the info. See you in Oshkosh.
Do not archive
Pat Reilly
mod 3 582 Rebuild
Rockford, IL
[quote] From: jdmcbean(at)kitfoxaircraft.com
To: kitfox-list(at)matronics.com
Subject: RE: Re: W/B issues
Date: Wed, 25 Jun 2008 13:23:47 -0600
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Pat,
The wing sweep came into existence with the Series 5 aircraft when installing the heavier certified engines (O-200, IO-240 and Lycoming O-235) The earlier models typically had a zero degree sweep.
Fly Safe !!
John & Debra McBean
Ph 208.337.5111
www.kitfoxaircraft.com
"The Sky is not the Limit... It's a Playground"
From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of patrick reilly
Sent: Wednesday, June 25, 2008 9:29 AM
To: kitfox-list(at)matronics.com
Subject: RE: Re: W/B issues
Kitfoxers, I am rebuilding a Mod 3 that originally was built with a 912. I am installing a 582. I already have moved the battery box to behind the firewall from behind the seat. I know I will need to do a weight and balance when I finish. Now I hear different engines (weight ) require different "wing sweep". Will I need to alter my wing mounts to accomodate the 582. Why do different engines require different wing sweep? Is it because the heavier engine is so much heavier that weight and balance can not be brought into spec without changing center of lift by sweeping wings farther forward? I think I have answered my own question here. I didn't really understand different wing sweep requirements until I formulated this question. I still wouldn't mind confirmation of "wing sweep" characteristics. And, wonder if the building of the original kit called for different wing sweep for 912 vs. 582 engines? Or, if Mod 3 wing sweep was same for 912 and 582. Datum point or W/B spec would not be same with different wing sweep, right?
Pat Reilly
Mod 3 582 Rebuild
Rockford, IL
| Quote: | Subject: Re: W/B issues
From: n85ae(at)yahoo.com
Date: Wed, 25 Jun 2008 07:37:08 -0700
To: kitfox-list(at)matronics.com
--> Kitfox-List message posted by: "n85ae" <n85ae(at)yahoo.com>
I have an IO-240B, with 1 degree forward sweep. I have a battery plus
ballast in the tail. Without the wing sweep I think balance might be a
real problem with my engine.
I think it is possible to change the wing sweep if you use the cuffs that
I think Murle Williams was selling.
Regards,
Jeff.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=189749#189749
&========================
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