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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/16/2012 8:21 PM   
Flyitorcrashtrying


 

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From: Lake Mary, FL, USA
Status: offline 		Wont be long now SDP.  Looking good as new.   I agree that it would have been a shame to scrap it.  So glad you didn't.  A lot less work than building a new one and now it has some experience.  Looking forward to seeing its second maiden flight.


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/18/2012 5:53 PM   
SunDevilPilot



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Status: offline 		Reinstalled the struts onto the wings.  I also installed the wing tips skid plates.  Once I purchase the servos they will get installed and the wings will be 100% complete.

In a few hours I plan on painting the red back onto the fusealge.  At that point, other than some small paintwork on the windows, the repainting of the model will be complete and the remainder of the work will be reinstalling the components.  I still have all the linkages and tail brace components so things should be fairly easy.

SunDevilPilot

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/19/2012 1:23 AM   
SunDevilPilot



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Status: offline 		As planned, fuselage got its red paint today.  Task went without issue.

My plan is to allow the fuselage paint to sit for a week until fully cured to continue with the rebuild.  At this point it is more or less a reassembly process.

On Tuesday I will touch-up the landing gear parts I have issue with and everything will be ready by next week.

Shouldn't be too long now.

Thanks for all the input guys!  It would have been easy for me to have scrapped this plane and missed the opportunity at this rebuild.

SunDevilPilot


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/19/2012 2:06 AM   
VincentJ


 

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Status: offline 		Looks like the paint laid down real well.  Nice Job!


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/20/2012 9:27 PM   
SunDevilPilot



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Status: offline 		Today I finished up the paintwork on the landing gear.  I prepared the gear by giving the previous paint a quick sanding then sprayed away.  The paint worked out much better with the warmer outside temperature.

 SunDevilPilot

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/24/2012 6:19 PM   
SunDevilPilot



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Status: offline 		Landing gear and tail brace wires reinstalled.  Im waiting on one more servo, which is on its way, then I will start to reinstall the radio gear.

SunDevilPilot 

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/24/2012 7:02 PM   
Zor



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quote:

ORIGINAL: SunDevilPilot

Landing gear and tail brace wires reinstalled.  Im waiting on one more servo, which is on its way, then I will start to reinstall the radio gear.

SunDevilPilot 


SunDevilPilot,

Would it be possible for you to post pictures of the tail wires installation ?

So we could see the attachment to the rudder and the stabilizer.

I am aware that a close up may turn out "out of focus".
Close enough to remain in focus would be great.

It would be much appreciated.

Also what did you use for the wires ?

Thanks,

Zor


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/24/2012 7:17 PM   
SunDevilPilot



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From: Gilbert, AZ, USA
Status: offline 		Here ya go..  The wires are made from Du-Bro #205 harware pack.  Here is a link to that:

http://shop.dubro.com/p/4-40-steel-rod-end-assembly-qty-pkg-2

SunDevilPilot


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/25/2012 1:58 PM   
Zor



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quote:

ORIGINAL: SunDevilPilot

Here ya go..  The wires are made from Du-Bro #205 harware pack.  Here is a link to that:

http://shop.dubro.com/p/4-40-steel-rod-end-assembly-qty-pkg-2

SunDevilPilot



SunDevilPilot,

Many thanks for the pictures and the link to the hardware. 

I was wishing to compare to what I had done on my Skybolt. 

Zor
 



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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/25/2012 9:39 PM   
misha034



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Status: offline 		Excellent topic that will help me a lot with my scratch build of 1/4 Piper Cub.
Because I live in Serbia, country with no RC shops, it is very difficult to find material
for this build. Because I do not have no original plans, I am trying to draw my own
plan and I need help from experience builders. Can you tell me

- what is diameter of front and rear wing struts.
- what balsa thickens is used for making horizontal and vertical stabilizer?

that is it for now but I will probably ask some more questions

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/28/2012 12:21 AM   
SunDevilPilot



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Status: offline 		I am ordering parts as my hobby funds allow.  So far I have reinstalled the elevator servos, the elevator rods, and their horns.  All the elevator linkage has been adjusted.  I also installed the rudder servo and its horn.  Lastly, I rewired and installed a Fromeco switch.

My LHS had one Fromeco switch on hand but it was Deans in Deans out.  So, I unsoldered the output Deans at the board, resoldered on some HD servo wire, and installed a servo style end.  Now the switch will plug straight into the receiver.  All the servos are Futaba HV (High Voltage) and are powered via a 2S 2500 mAh Lipo.  The Fromeco switch is a failsafe switch which, if it fails, turn on.

I should have my ESC this seek as well as the Pull-Pull hardware to complete the rudder and tailwheel.

SunDevilPilot


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/28/2012 12:27 AM   
SunDevilPilot



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quote:

ORIGINAL: misha034

Excellent topic that will help me a lot with my scratch build of 1/4 Piper Cub.
Because I live in Serbia, country with no RC shops, it is very difficult to find material
for this build. Because I do not have no original plans, I am trying to draw my own
plan and I need help from experience builders. Can you tell me

- what is diameter of front and rear wing struts.
- what balsa thickens is used for making horizontal and vertical stabilizer?

that is it for now but I will probably ask some more questions


The thicknesses of the stabs is 3/8". 

Strut construction starts on page 12...

http://www.rcuniverse.com/forum/fb.asp?m=10755061
 



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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/28/2012 6:57 PM   
misha034



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Status: offline 		Thank you for the info about stab thickness.

I have read your post from from first to last letter. Excellent build, and what I like most, very clean one.
My question about struts, has bin in general, what size of struts SIG recommended.
Somewhere I have seen that on this size of model, recommended struts (made of Spruce) are 15 mm front and 10 mm back strut.

Thank you and best regards
Misha

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/29/2012 11:06 PM   
Zor



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quote:

ORIGINAL: misha034

Thank you for the info about stab thickness.

I have read your post from from first to last letter. Excellent build, and what I like most, very clean one.
My question about struts, has bin in general, what size of struts SIG recommended.
Somewhere I have seen that on this size of model, recommended struts (made of Spruce) are 15 mm front and 10 mm back strut.

Thank you and best regards
Misha


With those single dimensions are we to assume (guess) that those struts are round (circle cross section) ?

If they are to be streamline then two dimensions are needed.
Streamlined struts are usually have their maximum thikness at 40% of their longest dimension (fore and aft).

Would you like me to make and post a sketch ?

Zor


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/30/2012 12:05 AM   
TripleDeucer



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quote:

ORIGINAL: Zor


quote:

ORIGINAL: misha034

Thank you for the info about stab thickness.

I have read your post from from first to last letter. Excellent build, and what I like most, very clean one.
My question about struts, has bin in general, what size of struts SIG recommended.
Somewhere I have seen that on this size of model, recommended struts (made of Spruce) are 15 mm front and 10 mm back strut.

Thank you and best regards
Misha


With those single dimensions are we to assume (guess) that those struts are round (circle cross section) ?

If they are to be streamline then two dimensions are needed.
Streamlined struts are usually have their maximum thikness at 40% of their longest dimension (fore and aft).

Would you like me to make and post a sketch ?

Zor



How many Cubs have you seen with round struts?  Of coarse they are to be streamline. Misha is just trying to get some information since he has no plan to look at.


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/30/2012 4:13 AM  1 votes
Zor



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quote:


How many Cubs have you seen with round struts?  Of coarse they are to be streamline. Misha is just trying to get some information since he has no plan to look at.

Mark

Of course I have not which is exactly why I made the point that two dimensions are needed.

I thought you would have figured that out yourselves.

Zor


 



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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/30/2012 9:30 PM   
misha034



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Status: offline 		ZOR, I only wanted to know dimensions that i asked and by knowing it I can easy calculate needed dimension.
If it is aluminum it must be as it is, but if I make it form spruce (I think it is on original plan), I will calculate its thickness.
As you can see I did not asked how long strut should be, because it depends on where linkage point will be, so
that information is not relevant for me at this moment.

I know what aluminum struts are used for this plane,
Two 3/4" X 35" Pieces of Streamlined Aluminum (K&S Stock # 1105)
Two 5/8" X 35" Pieces of Streamlined Aluminum (K&S Stock # 1104)
(there is not thickness)
but i only wanted to know what is on original plans.

Thank you

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 11/30/2012 10:06 PM   
Cub Flyer Fresno



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Status: offline 		5/8" front, 1/2" rear.  They are 1/4" thick.  This is by the original plans.  And, by the way, they come in rectangular stick stock, not round.    If you need more dimensions, let me know! 

Take care,
David


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/2/2012 10:18 PM   
SunDevilPilot



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Status: offline 		Today I reinstalled the Rudder / Tailwheel pull-pull cables.  No changes to the original configuration.  I also installed the Motor and ESC back onto the plane.

The next item on the agenda is the windshield (My Nemesis!!)

(Ignore the weird red in the photos...  The flash was causing some weird camera action)

SunDevilPilot 

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/2/2012 10:42 PM   
VincentJ


 

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Status: offline 		Perfection, well re-done!


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/2/2012 10:48 PM   
misha034



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Status: offline 		David, thank you very much.

SunnDevilPilot, this Piper will be masterpiece, like it was in his privious life.



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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/4/2012 5:43 PM   
SunDevilPilot



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Status: offline 		I haven't found the motivation to install the windshield but I have begun the process of putting the instrument panel back in.  A few minutes ago I put the gauges back on the panel.  After the glue from the instruments dry I will install the panel back into the fuselage.

SunDevilPilot 

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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/5/2012 12:26 AM   
SunDevilPilot



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Status: offline 		Panel is back on the plane, good as new.

SunDevilPilot


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/5/2012 1:06 AM   
VincentJ


 

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Status: offline 		You can't postpone the inevitable you know what's next......


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RE: Sig 1/4 J3 Kit converted to PA-18 Super Cub (Build) - 12/5/2012 1:17 AM   
SunDevilPilot



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quote:

ORIGINAL: VincentJ

You can't postpone the inevitable you know what's next......


I know, I know!  I hate the windshield. So stressful!

Tomorrow I'm going flying so not tomorrow.

I did order the receiver for my Cub, but there is one catch, it comes with a radio.  I really wanted to have servo speed adjustment so I went ahead and ordered a Futaba 14SG.  I really never liked how fast the flaps snapped into place.  My XMas gift to myself.  The 14SG should be a nice upgrade from my 10C.

I also fly helicopters so the three gyro support of the 14SG will be a welcome addition too.

SunDevilPilot


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