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Old 04-20-2013, 02:51 PM   #1
Jfquebec
 
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Default kitfox classic 4 speedster tail problem

i everybody,im now in progress to install all ribs in my vertical and rudder ..so all my vertical was done,but yesterday when i check to starting installation of rudder ribs .i found a little problem...on my construction book i have two plans ,one for speedster and the other is for model-4 1200...the problem is ....on speedster plan.they said to put a space of 2.32 at bottom and 1.52 at the top..but it"s impossible for me because the rod end at 2.32 is completly out of bushing....and on all plans he have 4 rod end and on my tail only 3....????
maybe because is early model...??

so for my tail the only solution i think is to trim all ribs on rudder maybe 1 inch +/-...

any suggest will be welcome...i dont think i happen only at me...???
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Old 04-21-2013, 04:32 AM   #2
Jfquebec
 
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Default Re: kitfox classic 4 speedster tail problem

I dear JF...i think that's problem is happen only at you...
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Old 04-21-2013, 07:06 AM   #3
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Default Re: kitfox classic 4 speedster tail problem

Hi JF

My manual is dated 2003, and shows the Speedster tail with 3
bushings on the vertical. I adjust the rudder to tailpost space
before fitting the fiberglas fairing, Tube to tube dimension has
allways been able to achieve. Post a picture if I don't understand.

Phil
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Old 04-21-2013, 07:44 AM   #4
t j
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Default Re: kitfox classic 4 speedster tail problem

I have a Classic 4 manual from 1994. It shows 4 rod ends to attach the rudder. Top three rod ends are part number 93004 (3/16" x 10-32 rod end). The 4th (bottom) rod end is part number 93001 (3/16" x 1/4"-28). Bigger than the top three.

Now, in 1996, Old Skystar sent me a revised "Classic IV Fuselage Assembly" (Document P/N 10192.000). This new manual shows only three rod ends to attach the rudder. All three are the bigger part number 93001 (3/16" x 1/4" -28 rod end)

Maybe your rod ends are the wrong part numbers.
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Old 04-21-2013, 08:45 AM   #5
Jfquebec
 
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Default Re: kitfox classic 4 speedster tail problem

if i dont put 2 3/8" at the bottom the rudder can't make any move...and if i put 2 3/8" my rod end was to short...i gone take some pic to show you...
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Old 04-21-2013, 10:02 AM   #6
Jfquebec
 
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Default Re: kitfox classic 4 speedster tail problem

i put small video to show thw problem....thank's to all

http://www.youtube.com/watch?v=IcuwZLCjD8c
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Old 04-21-2013, 12:24 PM   #7
t j
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Default Re: kitfox classic 4 speedster tail problem

It appears that the bushing the rod end screws into is too short. The bushings on my classic 4 stick out about 7/8 inch past the rear of the fuselage tail post which is near even with the center of the cutout in the rudder stop tabs.

This one has just the foam gap seal on the tail post. The rod end check nut in this picture is tight against the end of the bushing. The left end of the ruler is near as I can tell where the rear of the tail post is.
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File Type: jpg IMG_7527.jpg (44.5 KB, 254 views)
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Old 04-21-2013, 01:11 PM   #8
Geowitz
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Default Re: kitfox classic 4 speedster tail problem

LOL, Love the video...

Don't have much more to add other than I agree it does appear that the bushings in your case are too short. Perhaps someone cut them off? They should stick out more. Not sure how you would fix that, but you definitely want a lot of the thread holding on all three points and the bushing as far out as possible for strength. Here is the best picture I could find which shows mine. Also a model IV Speedster. Looks like I have about 7/8 to an inch sticking out as TJ measured.
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Last edited by Geowitz; 04-21-2013 at 01:13 PM.
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Old 04-21-2013, 01:13 PM   #9
Jfquebec
 
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Default Re: kitfox classic 4 speedster tail problem

My bushing is only 1/8" out...thats what my problem...if it was like your ,everything was perfect....
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Old 04-21-2013, 01:18 PM   #10
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Default Re: kitfox classic 4 speedster tail problem

If i have seen that before to install all rib's and fairing on vertical .i've probably welded an extention to this bushing???
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