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1. 08:33 PM - Re: Re: Ballast in front for models 2 & 3 582 engines (James Shumaker)
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| Subject: | Re: Ballast in front for models 2 & 3 582 engines |
The feeling of being tail heavy does not mean anything if your CG is not co
rrect.- The trim speed on the model 3 is set with the horizontal stabilat
or position.- If the CG is within the envelope then the Stabilator incide
nce can be set for pitch trim at cruise.- When that is set then you may f
eel the plane become more tail heavy when you add a passenger....that is it
will fly hands off at a slower speed with two in the plane than with one..
..depending on the weight distribution of the passenger.- I have found th
at small passengers with cushions behind them do not change the trim much.
- Heavy passengers generally make the plane fly a little slower with the
CG slightly further aft.- =0A=0AAll that being said, it is better to move
the battery forward than to add weight.=0A=0AJim Shumaker=0AModel 3- 120
0 hours=0ARotax 912ul- (nose heavy)=0A=0A=0A_____________________________
___=0A- From: Mike Chaney <poasttown@yahoo.com>=0ATo: "kitfox-list@matron
ics.com" <kitfox-list@matronics.com> =0ASent: Tuesday, January 14, 2014 6:0
8 AM=0ASubject: Re: Kitfox-List: Re: Ballast in front for models 2 & 3 582
engines=0A =0A=0A=0AMichel=0A=0AWhen I had a 582 attached to the front of
my Mod. IV I added some weight.- I put lead shot in a two inch PVC pipe a
nd 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 a
bout 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 Tue
sday, January 14, 2014 4:12 AM, Michael Laundy <mikelaundy@yahoo.co.uk> wro
te:=0A =0AI suggest you have the aircraft accurately weighed so you can ch
eck the C of G is within limits. In my MK3 the battery is just aft of the e
ngine 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 la
nding.=0A=0AAlso on my mk 3 the angle of incidence on the horizontal stabil
iser is adjustable, 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 La
undy=0A=0AMk3 Rotax 582 -Cornwall UK=0A=0A=0A=0AOn Tuesday, 14 January 20
14, 9:08, Michel <michel@online.no> wrote:=0A =0A--> Kitfox-List message p
osted by: "Michel" <michel@online.no>=0A>=0A>In my humble opinion, when=0A
considering the CoG of a Kitfox, the most important thing is that, in case
of elevator failure, the aircraft=0A climbs at full throttle and descent at
idle throttle.=0A>=0A>Next, can you do a 3-points landing without difficul
ties? After the 582, I installed a Jabiru on my Kitfox 3 and that added wei
ght 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 l
and 3-point. I then gap sealed the elevator and not it works.=0A>=0A>Any le
ad ballast in an aircraft seems to me like a poor idea. I am sure the CoG c
an be placed in 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 o
nline here:=0A>=0A>http://forums.matronics.com/viewtopic.php?p=416883#416
883=0A>=0A>=0A>=0A>=0A>=0Ahttp://www.matronics.com/Navigator?Kitfox-List=0A
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