Ziroli P 38 Center Line Alinement  
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All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> Ziroli P 38 Center Line Alinement
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Ziroli P 38 Center Line Alinement - 1/18/2003 4:45:56 AM   
GARHIDE



Posts: 227
Joined: 12/27/2001
From: sulphur, LA, USA
Status: offline 		ON THE Z P38 PLANS

THEIR ARE NO CENTER LINES ON THE BOOMS, WING RIB CENTER LINE OR ANY THING ELSE.

I NEED TO ALINE THE BOOMS TO THE WINGS.

PLEASES HELP.

YOUR FRIEND
MIKE MOSS
       Post #: 1

Alignment - 1/18/2003 6:12:51 AM   
CaptainHook



Posts: 1103
Joined: 12/24/2001
From: Swartz Creek, MI, USA
Status: offline 		Mike,

You sure couldn't have picked a tougher one to talk about online. This is probably the toughest part of the kit. I'll give this my best shot. Assuming your trying to line up the mounts for drilling. The wing has 4 pre drilled mounts for each boom, boom mounts undrilled at this point with the wing and booms sheeted. The bottom of the wing in the area where the booms mount will need to be removed (not all), just enough to see the blocks. This will give you open access to measure the center distance of the mounting blocks. Draw a line front to rear centered between the blocks on the remaining sheeting using a flexible straight steel yardstick. Transfer this line to the upper side of the wing and draw a line down the center of the boom. This will give you a good start to alignment. The easy part is now done Transfer 2 small holes to the wing using the pre drilled holes from the boom (diagonal mounts). These will serve as a temporary anchor holes with small wood screws. do the smame to the other boom. After you have them mounted, take a good look at the alignment. Trial fit the stab to see if the spacing is correct, check the everything is square from side to side front to rear. Be patient with this. Make any adjustment that you need before you transfer the opposite corners. When satisfied, transfer the remaining holes with the correct size bolts. Remove the temp screws and transfer the new. This took me about 20 hours to do before I was satisfied. Good luck and have fun!

Carey


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Carey Hook

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Ziroli P 38 Center Line Alinement - 1/18/2003 6:56:09 AM   
flying2bill



Posts: 485
Joined: 12/25/2001
From: Central City, IA, USA
Status: offline 		Boy if you did this in just 20 hours I can look forward to 2 weeks


_____________________________

Rule of the 3 W's
If it involves Wheels, Wings, or Women, it's bound to be trouble.

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Ziroli P 38 Center Line Alinement - 1/18/2003 7:06:58 AM   
CaptainHook



Posts: 1103
Joined: 12/24/2001
From: Swartz Creek, MI, USA
Status: offline 		C'mon Bill, you can do this for no more than what I did . I built a Z P61 for F4u5 and improved the time to about 10 hours. Main thing to remember is patience and have a good eye.


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Carey Hook

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Ziroli P 38 Center Line Alinement - 1/18/2003 7:16:34 AM   
Vince


 

Posts: 1650
Joined: 2/2/2002
From: Nederland, Tx.
Status: offline 		Usually you can go by the mold lines where the sections are put together.

Vince

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Can't keep my mind from the circling sky.

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Ziroli P 38 Center Line Alinement - 1/18/2003 8:12:03 AM   
F4u5



Posts: 1819
Joined: 1/19/2002
From: Apple Valley, MN, USA
Status: offline 		AND I thank Carey.....I don't build twins...don't have the patience. One body and one engine are plenty fir me.....

(in reply to GARHIDE)
       Post #: 6

Ziroli P 38 Center Line Alinement - 1/18/2003 6:44:01 PM   
flying2bill



Posts: 485
Joined: 12/25/2001
From: Central City, IA, USA
Status: offline 		I'm just slow, actually catch myself daydreaming (aka hanger flying) more than I build. Wish I had the building discipline of F4u5, I'd have my P38 done already!!!


_____________________________

Rule of the 3 W's
If it involves Wheels, Wings, or Women, it's bound to be trouble.

(in reply to GARHIDE)
       Post #: 7

Ziroli P 38 Center Line Alinement - 1/18/2003 7:13:43 PM   
flying2bill



Posts: 485
Joined: 12/25/2001
From: Central City, IA, USA
Status: offline 		Here are Ziroli's instructions:
Cut off the fuselage top between the firewall and B-6. Trim the covering (sheeting?) even with the wing saddle. Epoxy the 1/2" hardwood wing mount blocks in place. Insert the 1/4" dowels through the tail end and glue FS-1's to the sides of the fuselage. DON"T GLUE THE DOWEL. Add the 1/4" spacer blocks and FS-1A to the inside of the fuselages. NOW glue the dowels in so they extend 1/4" past FS-1A Don't add the outer stabilizer extensions until after the fin has been installed.
Set up 4 blocks so the fuselages will set parallel to each other about 35" apart. position the wing center section in the wing saddles. [COLOR=darkblue]There are varibles here so it is difficult to give an exact measurement[/COLOR] from the center of the wing to the center of the fuselages. [COLOR=darkred]Measure the plan and use that as a starting point[/COLOR] . Put the stabilizer on place on the locating dowels. Use a 3/16" diameter drill and go through the wing block and just touch the fuselage enough to leave a mark. the holes want to be an equal distance from the edge on both sides of the fuselages. Make sure the fuselages are parallel to the center body, each other, and square to the wing. This is a very critical assembly so take the time to get it right. When satisfied with the setup drill 3/16" diameter holes through the wing blocks into the fuselage. Remove the wing and tap the holes #1/4-20. Run some Zap into the threaded holes and when fully cured run the tap in the holes again. Position the 1/32" plywood wing wing saddle seats in place and see that the holes line up with the wing mount holes. Tape kitchen plastic wrap or similar to the bottom of the wing. Epoxy the wing saddles to the fuselages and hold by bolting the wing down. Make sure the bolts don't get epoxied in. When cured remove the wing and plastic. The fillets are built up with with balsa strips and filler. Use coarse sand paper on 1/2" and 3/4" dowels to shape fillets.

< Message edited by flying2bill -- Jan 18 2003 2:41PM >


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Rule of the 3 W's
If it involves Wheels, Wings, or Women, it's bound to be trouble.

(in reply to GARHIDE)
       Post #: 8

Incidence In Ziroli P38 - 1/19/2003 10:06:58 PM   
GARHIDE



Posts: 227
Joined: 12/27/2001
From: sulphur, LA, USA
Status: offline 		GREETINGS

I AM BUILDING A ZIROLI P38.

DOES ANYONE KNOW WHAT INCIDENCE THEIR IS IN THE WING?

AND HORIZONTAL STABILAZER?

WITH THE FIRE WALL AT O"

YOUR FRIEND
MIKE MOSS

(in reply to GARHIDE)
       Post #: 9

Wing incidence - 1/22/2003 4:13:47 AM   
fw190



Posts: 793
Joined: 1/1/2002
From: Burbank, CA,
Status: offline 		I talked to Nick Sr. about this several months ago, Nick is great guy and very helpful. He stated the wing has 3 degree washout. So there will be a slightly different incident on the pod than on the booms, ~ 1.5 degree. I have noticed on the plans that the wing's root is about 2.5 degree possitive incidence at 0 degree for motor and 0 degree for horizontal. I guess this is correct as I have seen and measured from several scale 3-views.

Hope this helps, I have no idea why it has so much positive incidence? anyone care to help?

fw190

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www.VicRC.com

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       Post #: 10

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