Today's Message Index:
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1. 01:02 AM - Re: Ballast in front for models 2 & 3 582 engines (Michel)
2. 04:04 AM - Re: Re: Ballast in front for models 2 & 3 582 engines (Michael Laundy)
3. 06:08 AM - Re: Re: Ballast in front for models 2 & 3 582 engines (Mike Chaney)
4. 08:07 AM - Ballast in front for models 2 & 3 582 engines (Joe & Jan Connell)
5. 08:55 PM - Re: Re: Ballast in front for models 2 & 3 582 engines (Noel Loveys)
Message 1
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| Subject: | Re: Ballast in front for models 2 & 3 582 engines |
In my humble opinion, when considering the CoG of a Kitfox, the most important
thing is that, in case of elevator failure, the aircraft climbs at full throttle
and descent at idle throttle.
Next, can you do a 3-points landing without difficulties? After the 582, I installed
a Jabiru on my Kitfox 3 and that added weight forward. I couldn't get the
tailwheel to touch the ground first when at stall speed. I then moved the battery
from the bulkhead (standard place, I think, for the model 3) to, behind
the seat. I still had difficulties to land 3-point. I then gap sealed the elevator
and not it works.
Any lead ballast in an aircraft seems to me like a poor idea. I am sure the CoG
can be placed in a better place by other means.
Cheers,
Michel
--------
Kitfox 3 - Jabiru 2200
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416883#416883
Message 2
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| Subject: | Re: Ballast in front for models 2 & 3 582 engines |
I suggest you have the aircraft accurately weighed so you can check the C o
f G is within limits. In my MK3 the battery is just aft of the engine bulkh
ead, the C of G is nicely within limits although I do find I run out of up
elevator approaching the stall or when trying to do a 3 point landing.=0A
=0AAlso on my mk 3 the angle of incidence on the horizontal stabiliser is a
djustable, you may be able to adjust that on your aircraft to make it feel
less tail heavy provided the C of G is within limits.=0A=0AMike Laundy=0A
=0AMk3 Rotax 582 -Cornwall UK=0A=0A=0A=0AOn Tuesday, 14 January 2014, 9:0
8, Michel <michel@online.no> wrote:=0A =0A--> Kitfox-List message posted by
: "Michel" <michel@online.no>=0A>=0A>In my humble opinion, when considering
the CoG of a Kitfox, the most important thing is that, in case of elevator
failure, the aircraft climbs at full throttle and descent at idle throttle
.=0A>=0A>Next, can you do a 3-points landing without difficulties? After th
e 582, I installed a Jabiru on my Kitfox 3 and that added weight forward. I
couldn't get the tailwheel to touch the ground first when at stall speed.
I then moved the battery from the bulkhead (standard place, I think, for th
e model 3) to, behind the seat. I still had difficulties to land 3-point. I
then gap sealed the elevator and not it works.=0A>=0A>Any lead ballast in
an aircraft seems to me like a poor idea. I am sure the CoG can be placed i
n a better place by other means.=0A>=0A>Cheers,=0A>Michel=0A>=0A>--------
=0A>Kitfox 3 - Jabiru 2200=0A>=0A>=0A>=0A>=0A>Read this topic online here:
=0A>=0A>http://forums.matronics.com/viewtopic.php?p=416883#416883=0A>=0A>
=====0A>=0A>=0A>=0A>=0A>=0A>
Message 3
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| Subject: | Re: Ballast in front for models 2 & 3 582 engines |
Michel=0A=0AWhen I had a 582 attached to the front of my Mod. IV I added so
me weight.- I put lead shot in a two inch PVC pipe and then glued two end
caps to contain the shot.- I then attached the pipe to the cabin side of
the firewall.=0AOn a side note.- From what I hear about melting lead you
need to be careful about the fumes produced from the melting process.-
=0A=0AMike=0A1996 Kitfox IV/Jabiru=0A=0A=0A=0A=0AOn Tuesday, January 14, 20
14 4:12 AM, Michael Laundy <mikelaundy@yahoo.co.uk> wrote:=0A =0AI suggest
you have the aircraft accurately weighed so you can check the C of G is wi
thin limits. In my MK3 the battery is just aft of the engine bulkhead, the
C of G is nicely within limits although I do find I run out of up elevator
approaching the stall or when trying to do a 3 point landing.=0A=0AAlso on
my mk 3 the angle of incidence on the horizontal stabiliser is adjustable,
you may be able to adjust that on your aircraft to make it feel less tail h
eavy provided the C of G is within limits.=0A=0AMike Laundy=0A=0AMk3 Rotax
582 -Cornwall UK=0A=0A=0A=0AOn Tuesday, 14 January 2014, 9:08, Michel <mi
michel@online.no>=0A>=0A>In my humble opinion, when considering the CoG of
a Kitfox, the most important thing is that, in case of elevator failure, th
e aircraft=0A climbs at full throttle and descent at idle throttle.=0A>=0A>
Next, can you do a 3-points landing without difficulties? After the 582, I
installed a Jabiru on my Kitfox 3 and that added weight forward. I couldn't
get the tailwheel to touch the ground first when at stall speed. I then mo
ved the battery from the bulkhead (standard place, I think, for the model 3
) to, behind the seat. I still had difficulties to land 3-point. I then gap
sealed the elevator and not it works.=0A>=0A>Any lead ballast in an aircra
ft seems to me like a poor idea. I am sure the CoG can be placed in a bette
r place by other means.=0A>=0A>Cheers,=0A>Michel=0A>=0A>--------=0A>Kitfox
3 - Jabiru 2200=0A>=0A>=0A>=0A>=0A>Read this topic online here:=0A>=0A>http
://forums.matronics.com/viewtopic.php?p=416883#416883=0A>=0A>=0A>=0A>=0A>
=============
Message 4
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| Subject: | Ballast in front for models 2 & 3 582 engines |
Hi Charles,
I have a Kitfox-II with a 582. My battery (lawn mower type) is located
aft of the firewall on the pax side. Two 6 gallon wing tanks with the
header tank behind the seat...
Joe
Time: 09:58:48 PM PST US
Subject: Kitfox-List: Ballast in front for models 2 & 3 582 engines
From: Charles <cookflys@yahoo.com>
Do any of you mod 2 or 3s have any weight added to front?
I saw a model 2 and model 3 with weight added under the front engine
mount. It
was ice tray with lead melted in it. I have no idea how much it weighs
but my
model 2 tail has always seemed heavy in flight.
My battery is behind my seat.
C Cook
Message 5
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| Subject: | Re: Ballast in front for models 2 & 3 582 engines |
I agree that C of G needs to be accurately measured .- My preference is t
o set up the plane according to the construction manual.- The only deviat
ion to that is the set up for floats... Instead of measuring the step locat
ion I prefer to calculate the cg of the floats and then locate that cg dire
ctly below the cg of the plane sans wheels... That way the plane will balan
ce properly for take off.=0A=0ANoel=0A=0ASent from Yahoo Mail on Android=0A
=0A
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