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FWD Battery Location

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stevesimmons(at)charter.n
Guest

Posted: Mon Dec 28, 2009 12:45 pm Post subject: FWD Battery Location

Does anyone have a good drawing or photos of a fwd battery instillation on a Kolb mark III Classic?  

       [quote][b]

by0ung(at)brigham.net
Guest

Posted: Mon Dec 28, 2009 3:35 pm Post subject: FWD Battery Location

 	  Quote: 	
		  Does anyone have a good drawing or photos of a fwd battery instillation on a Kolb mark III Classic?  

   
	


 	  Quote: 	
		  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>   

   
	


When I first built my mkIII I put the battery forward of the rudder pedals  in order to get the cg closer to the center,,,,,   found out that it flies better at the aft edge of the cg range.   And when I had 2 people on board and the forward cg battery location I would run out of elevator authority.   So I moved the battery to just behind the passenger seat.   If I were a light weight pilot, I would build a small compartment in the floor  to put in a 10 lb bag of shot when flying solo,  and take it out if I had a passenger on board.  

   

Just my $0.02  worth.  

   

Boyd Young  

Mkiii  912 ul  

   

       [quote][b]

bill_joe(at)bellsouth.net
Guest

Posted: Mon Dec 28, 2009 4:32 pm Post subject: FWD Battery Location

Hello Guys, and Happy  New-Year to all.

  

      I did the same thing that  Boyd did and had the battery in the nose. Well it is behind the pass seat where  it is going to stay. I had my wife to sew a vinyl bag that would hold a 40 lb  bag of play sand and I just lay it on the floor some times to balance things  out. But I think agree with Boyd,put it behind the pass seat.

  

     Bill Futrell

     MK111Xtra-812-80 hp

  

    Do not archive

 [quote]   ---

John Hauck

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

Posted: Mon Dec 28, 2009 5:12 pm Post subject: FWD Battery Location

I'd never add weight to the nose of a mkIII unless  I weighed 75 lbs and flew solo all the time.

  

 The weight and balance for a mkIII is not exactly  exact.....

  

 I'm flying with a 12 lb Maule Tundra Tail Wheel,  150 lbs of fuel in a 25 gal tank behind the cg, plus 125 lbs of personal gear  behind cg in the cargo bay.  I have aft cg, but it is still within the  acceptable, safe flying range.

  

 john h

 mkIII

  

  

 [quote]    When I first built my mkIII I put the battery forward of    the rudder pedals  in order to get the cg closer to the    center,,,,,   found out that it flies better at the aft edge of the    cg range.   And when I had 2 people on board and the forward cg    battery location I would run out of elevator authority.   So I moved    the battery to just behind the passenger seat.   If I were a light    weight pilot, I would build a small compartment in the floor  to put in a    10 lb bag of shot when flying solo,  and take it out if I had a passenger    on board.

      

    

Just my $0.02     worth.   

    

Boyd    Young   

Mkiii  912    ul   

 

[b]

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Mon Dec 28, 2009 6:19 pm Post subject: Re: FWD Battery Location

You guys putting ballast in is why I added the ability to micro-adjust the flaps. By raising or lowering the flaps a very minute amount, you can easily compensate for trim changes that fall outside the factory spring loading arrangement.



Here's the link to the pictures, and obviously I radically changed my flap mechanism, but I was also using this same method of setting the flaps before I totally redid the cross tube.

http://www.bcchapel.org/pages/0003/pg3.htm



Skip the first two pictures on the page and the associated info, that is only for those who want to relocate the whole arrangement. Notice on the next four pictures that I ground off the original side notches and bolted on a curved piece with holes in it for the pin to lock into. You can put the holes where ever you want, and as many or as few as you want.



Richard Pike

MKIII N420P (420ldPoops)

slyck(at)frontiernet.net
Guest

Posted: Mon Dec 28, 2009 6:54 pm Post subject: FWD Battery Location

-just to be different....My battery is in front of the rudder pedals and I like it just fine.  If you want a pic I would have to dig up a photo CD.

BB

faked out with a nice day yesterday but woke back up to (white) reality this morning.



On 28, Dec 2009, at 10:53 AM, Steve Simmons wrote:

 	  Quote: 	
		  Does anyone have a good drawing or photos of a fwd battery instillation on a Kolb mark III Classic?



 	  Quote: 	
		  



style="color: blue; text-decoration: underline; ">www.aeroelectric.com

href="http://www.buildersbooks.com" style="color: blue; text-decoration: underline; ">www.buildersbooks.com

style="color: blue; text-decoration: underline; ">www.homebuilthelp.com

style="color: blue; text-decoration: underline; ">www.howtocrimp.com

style="color: blue; text-decoration: underline; ">http://www.matronics.com/contribution

style="color: blue; text-decoration: underline; ">http://www.matronics.com/Navigator?Kolb-List

blue; text-decoration: underline; ">http://forums.matronics.com



	


	


 [quote][b]

pj.ladd(at)btinternet.com
Guest

Posted: Tue Dec 29, 2009 9:04 am Post subject: FWD Battery Location

vinyl bag that would hold a 40 lb bag of play  sand>>

  

 Jeepers!

  

 If you really need that much ballast i would  suspect that something is seriously out of kilter. I have the battery just  behind the passenger seat and about 4lbs of lead in the nose. Lateral   inbalance caused by flying without a passenger is taken care of by the  Hauk bungee design.

  

 Pat

   [quote][b]

NeilsenRM(at)comcast.net
Guest

Posted: Tue Dec 29, 2009 9:51 am Post subject: FWD Battery Location

I have my battery installed in the nose of my  MKIIIC. My VW required by the numbers that the battery be moved. My battery is a  light 12AH lawn mower battery.

  

 When I installed my first redrive VW engine it was  mounted so high that I had seven inches of clearance between the 72 inch  prop and the boom tube. My first 150 lb. passenger required me to hold full  up elevator to climb with power (not good). For a while I added a steel weight  to the tail wheel strut. Later on a cross country I found that the aft CG caused  by the tail weight caused the plane to be almost uncontrollable in heavy  turbulence. Removing the weight made a significant improvement.

  

 I have since lowered the engine but haven't flown  with more than a 160 lb. passenger yet.

  

 Rick Neilsen

 Redrive VW Powered MKIIIC

 [quote]   ---

racerjerry

Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY

Posted: Wed Dec 30, 2009 7:17 am Post subject: Re: FWD Battery Location

YUP.  If you try to compensate for a high thrust line (nose down-force) with added tail weight, you can quickly get into big trouble.  When doing modifications, skipping W & B is not an option.  



What was that old saying about tuning 2-cycle racing engines?  That they sound best right before they blow up?  Yes, the plane flies better with aft CG but going too far brings on stability and stall recovery problems.  Don’t exceed the aft CG limit.

_________________
Jerry King

apilot(at)surewest.net
Guest

Posted: Thu Dec 31, 2009 10:17 am Post subject: FWD Battery Location

Do not have a picture of the forward battery box, but the task was made easier by cutting an access hole in the top of the nose cone with a removeable hatch cover.  It is handy for servicing the antenna wiring, the nose ballast and the back of the instrument panel.   Vic Mk IIIC

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