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IVO prop to trailing edge clearance

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heavyliftpilot

Joined: 01 Mar 2011
Posts: 26

Posted: Sat Mar 03, 2012 6:15 am Post subject: IVO prop to trailing edge clearance

Hey Guys....quick question (or two)....I have an IVO with the prop spacer.   There is 5" prop clearance to the T/E.... I would like to move my 503 forward, but not sure how much clearance i should have.   Reason?  i bought this firestar II about 3 weeks ago,  and found a 20 lb lead plate on the floor board (under the feet area)...and it's listed on the W/B sheet ((with a 220 lb pilot!!))   So,  does this sound right to anyone??  i weighed the tail without the ballast and the tail weight increase from 63 to 68 lbs.  The CG (with the ballast) is right at the aft limit.    I would love to get rid of 20 lbs of dead weight (by moving other things forward, ie the 503)   Any help?  thanks,  james

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elleryweld(at)aol.com
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Posted: Sat Mar 03, 2012 10:42 am Post subject: IVO prop to trailing edge clearance

if you have a battery on board you can move that to the front as I did in my old firestar

 

     Ellery Batchelder Jr.

 

 

 

   --

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racerjerry

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

Posted: Sun Mar 04, 2012 5:25 am Post subject: Re: IVO prop to trailing edge clearance

I donâ€™t mean to be a smart-ass, but I do need to confirm this.  When doing your W&B weight measurements to calculate CG, were you sitting in your Firestar II?  I looked through my old notes and the tail weight was 42 lbs, but this is with a 447,  and 190 lb pilot, but with tail boom shortened one foot from stock.

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_________________
Jerry King

jbhart(at)onlyinternet.ne
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Posted: Sun Mar 04, 2012 5:51 am Post subject: IVO prop to trailing edge clearance

At 06:15 AM 3/3/12 -0800, you wrote:

 	  Quote: 	
		  

Hey Guys....quick question (or two)....I have an IVO with the prop spacer.   
	


There is 5" prop clearance to the T/E.... I would like to move my 503 

forward, but not sure how much clearance i should have. 

.............................  

 	  Quote: 	
		  


	


James,



You need to run some prop to wing distance checkers.  



See:  http://jackbhart.com/firefly/firefly83.html



Jack B> Hart FF004

Winchester, IN

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byoungplumbing(at)gmail.c
Guest

Posted: Sun Mar 04, 2012 7:46 am Post subject: IVO prop to trailing edge clearance

I donâ?Tt mean to be a smart-ass, but I do need to confirm this.  When doing your W&B weight measurements to calculate CG, were you sitting in your Firestar II?  I looked through my old notes and the tail weight was 42 lbs, but this is with a 447,  and 190 lb pilot, but with tail boom shortened one foot from stock.



--------

Jerry King

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


	


jerry that is a good thought,   just to make sure all his ducks are in a row...  it never hurts to make sure everyone is at the same starting point.

 and to take it one step further,  when doing the W&B measurements,  in addition to him being in the plane,,  is the plane set in the correct pitch attitude?   without looking at the plans for the mkiii.   it seems like it says the bottom of the wing should be at 8 deg positive incidence.   in order to achieve this I had to have my tail wheel propped up on a 2 1/2 gal plastic bucket when I weighed everything, then subtracted the weight of the bucket.



boyd y

mkiii

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