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Engine Weight limit

 
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ElleryWeld(at)aol.com
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PostPosted: Fri Nov 07, 2008 6:42 pm    Post subject: Engine Weight limit Reply with quote

I didn't know if someone has already figured this out or not but
anyone know off hand what the heaviest engine a MK3 Xtra Can support and stay within C/G limits?

Ellery in Maine
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ez(at)embarqmail.com
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PostPosted: Sun Nov 09, 2008 1:02 pm    Post subject: Engine Weight limit Reply with quote

< G >

Ok, Ill be the smart aleck.

Anything up to gross weight all depending where you mount it.
Gene

On Nov 7, 2008, at 9:42 PM, ElleryWeld(at)aol.com (ElleryWeld(at)aol.com) wrote:
[quote] I didn't know if someone has already figured this out or not but
anyone know off hand what the heaviest engine a MK3 Xtra Can support and stay within C/G limits?

Ellery in Maine
do not archive

AOL Search: Your one stop for directions, recipes and all other Holiday needs. [url=tp://searchblog.aol.com/2008/11/04/happy-holidays-from-aol-search/?ncid=emlcntussear00000001 ]Search Now[/url].
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aslsa.rng(at)gmail.com
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PostPosted: Sun Nov 09, 2008 4:49 pm    Post subject: Engine Weight limit Reply with quote

The other side of the limit is what will the cage hold in a crash. The reason the army stopped buying Wright aircraft was that too many trainees were killed in relatively light crashes when the engine tore loose from its mounts and crushed them.


Rick

On Sun, Nov 9, 2008 at 3:01 PM, Eugene Zimmerman <ez(at)embarqmail.com (ez(at)embarqmail.com)> wrote:
Quote:
< G >

Ok, Ill be the smart aleck.

Anything up to gross weight all depending where you mount it.
Gene



On Nov 7, 2008, at 9:42 PM, ElleryWeld(at)aol.com (ElleryWeld(at)aol.com) wrote:

Quote:
I didn't know if someone has already figured this out or not but
anyone know off hand what the heaviest engine a MK3 Xtra Can support and stay within C/G limits?

Ellery in Maine
do not archive

AOL Search: Your one stop for directions, recipes and all other Holiday needs. Search Now.
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John Hauck



Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

PostPosted: Tue Nov 11, 2008 9:46 pm    Post subject: Engine Weight limit Reply with quote

Rick:

You must be thinking of Rans S-12's.

Kolbs do not have a history of dumping engines on their crews.

john h
mkIII
Nellis AFB, NV
[quote]
The other side of the limit is what will the cage hold in a crash. The reason the army stopped buying Wright aircraft was that too many trainees were killed in relatively light crashes when the engine tore loose from its mounts and crushed them.


Rick

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aslsa.rng(at)gmail.com
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PostPosted: Wed Nov 12, 2008 2:43 am    Post subject: Engine Weight limit Reply with quote

You're right John, I often confuse the Wright Flyer with a Rans S-12 given the great physical similarity.The question was, what is the upper weight limit for an engine on a Kolb airframe, not anything about the history of the Kolb. Eugene, facetiously, suggested it was the difference between empty and gross weights. My comment was meant to suggest the limit might be slightly lower than that.
Time for a pill, John.
Rick

On Tue, Nov 11, 2008 at 11:44 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:
Quote:
Rick:

You must be thinking of Rans S-12's.

Kolbs do not have a history of dumping engines on their crews.

john h
mkIII
Nellis AFB, NV
Quote:

The other side of the limit is what will the cage hold in a crash. The reason the army stopped buying Wright aircraft was that too many trainees were killed in relatively light crashes when the engine tore loose from its mounts and crushed them.


Rick

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John Hauck



Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

PostPosted: Wed Nov 12, 2008 7:13 am    Post subject: Engine Weight limit Reply with quote

Rick:

You are absolutely correct.

Thought the bit of info on RANS S-12's would be of interest to the List.

As far as Kolb history, I don't remember a Kolb accident where the engine seperated from the airframe or the airframe collapsed, allowing the engine to come down on the crew.

I doubt there is any published info on max engine weight on Kolbs.

Did I miss a pill? Thought I took them before I went to bed last night.

john h
mkIII

[quote] The question was, what is the upper weight limit for an engine on a Kolb airframe, not anything about the history of the Kolb.

.
Time for a pill, John.


Rick

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ElleryWeld(at)aol.com
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PostPosted: Wed Nov 12, 2008 4:02 pm    Post subject: Engine Weight limit Reply with quote

I ask a simple question and got some smart alex answers I don't treat anyone like that on this list I usually give info that I know about or leave the question for someone that has a real answer for it.
and the question was" I didn't know if someone has already figured this out or not but
anyone know off hand what the heaviest engine a MK3 Xtra Can support and stay within C/G limits?"

Ellery in Maine
do not archive



In a message dated 11/12/2008 5:43:47 A.M. Eastern Standard Time, aslsa.rng(at)gmail.com writes:
Quote:
You're right John, I often confuse the Wright Flyer with a Rans S-12 given the great physical similarity. The question was, what is the upper weight limit for an engine on a Kolb airframe, not anything about the history of the Kolb. Eugene, facetiously, suggested it was the difference between empty and gross weights. My comment was meant to suggest the limit might be slightly lower than that.
Time for a pill, John.


Rick

On Tue, Nov 11, 2008 at 11:44 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:
Quote:
Rick:

You must be thinking of Rans S-12's.

Kolbs do not have a history of dumping engines on their crews.

john h
mkIII
Nellis AFB, NV
Quote:

The other side of the limit is what will the cage hold in a crash. The reason the army stopped buying Wright aircraft was that too many trainees were killed in relatively light crashes when the engine tore loose from its mounts and crushed them.


Rick

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herbgh(at)nctc.com
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PostPosted: Wed Nov 12, 2008 5:50 pm    Post subject: Engine Weight limit Reply with quote

wondering if it would be more about the structure than the cg? Bet Ricks 2180 VW cg chart would help? You should be able to do some "what if's" from that or a 912S installation cg chart... battery or lead in nose should overcome a heavy engine install..

Herb

At 06:01 PM 11/12/2008, you wrote:
[quote]I ask a simple question and got some smart alex answers I don't treat anyone like that on this list I usually give info that I know about or leave the question for someone that has a real answer for it.
and the question was"

I didn't know if someone has already figured this out or not but
anyone know off hand what the heaviest engine a MK3 Xtra Can support and stay within C/G limits?"

Ellery in Maine
do not archive
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JetPilot



Joined: 10 Jan 2006
Posts: 1246

PostPosted: Sat Nov 15, 2008 8:25 pm    Post subject: Re: Engine Weight limit Reply with quote

Just because you CAN put a very heavy engine on a Kolb MK III does not mean that you would want to. The Kolb MK III flys a lot nicer when it is kept relatively light. I have flown my Kolb at light weights alone, and at very heavy weights with a bunch of gas and a heavy passenger. The Kolb feels more like a 172 and not a Kolb when it is very heavy. Being to heavy takes a lot of fun out of the Kolb.

Mike


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