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Building Tips and technical articles. => Building techniques => Topic started by: frank carlisle on June 16, 2006, 07:32:18 PM

Title: VICTORY GOES UNDER THE KNIFE
Post by: frank carlisle on June 16, 2006, 07:32:18 PM

I used 3/32 music wire for the pushrod. I used a split sleeve solder joint in the middle of the pushrod. I discovered today after gluing the hinges that there was something not right in the controls.
I got out my stethoscope and listened to the noises going on inside the plane while I worked the flaps and elevators.. All the noise was coming from that split sleeve solder joint on the pushrod. I cut out a 4" X 1" slot in the side of the fuselage to get to the solder joint.

GUESS WHAT?????

I HAD FORGOTTEN TO SOLDER IT!!!

Needless to say I was shocked. Any way I soldered it and glued the pieces back on the plane. Now sanding, filler and primer are on it and you can't see where I did the cutting.

There are blisters forming in the fillet. I did o.k. fixing them but they are coming back. I guess they need more time to gas off. SO............I'm going to take it out to fly Sunday. The fillets can wait.

Title: Re: VICTORY GOES UNDER THE KNIFE
Post by: Oregon_Flyer on June 16, 2006, 08:18:26 PM

Hi Frank,

Sure sorry to read about the fillet blisters.  A lot of guys have switched over to a product by Poly-fil, it is a 2-part epoxy putty called Super-fil that is used in the aircraft industry.  Randy Powell would be a good first opinion to get and also Scott Riese who put me onto it and I gotta tell you, day and a half and I got the primer on it and am going full steam.  It sands like a dream no shrinkage no praying to make it come out right.  Suggest also that you go to their website: www.polyfiber.com and check out the Super-fil yourself.  That said, get outta dat basket, pronto  f~

Marv

Title: Re: VICTORY GOES UNDER THE KNIFE
Post by: Randy Powell on June 16, 2006, 11:25:33 PM

I'll confirm. I would no longer use anything else.

Title: Re: VICTORY GOES UNDER THE KNIFE
Post by: frank carlisle on June 17, 2006, 07:02:45 AM

I copied the link for polyfiber. Thanks guys.

Title: Re: VICTORY GOES UNDER THE KNIFE
Post by: Greg L Bahrman on June 17, 2006, 11:48:23 AM

Sorry Frank about all the problems. Modeling really requires a lot of patience at times. Two steps forward and one step back seem to be the standard procedure. Plane looks really great.

 y1

Title: Re: VICTORY GOES UNDER THE KNIFE
Post by: frank carlisle on June 17, 2006, 07:36:21 PM

Thanks for the good thoughts Greg.
I learned though that you can perform surgery on a model and put it back together again in such a way as to make the repair seamless. I guess we could say that adversity does indeed give us an edge.