Scale RCM 1/3 Scale Champ Build

[dhal22]

This is going to be fun to watch.

 

[BalsaDust]

is the outside diameter of the tubing a true 3/8"

 

[TonyHallo]

Yes the tube OD is the stated size, not like pipe. The 1/2" tube was .493" , didn't measure the 3/8" yet, it will be very close to .375". Need to bend around 1 1/2" radius

 

[BalsaDust]

Yes the tube OD is the stated size, not like pipe. The 1/2" tube was .493" , didn't measure the 3/8" yet, it will be very close to .375". Need to bend around 1 1/2" radius

Might be able to use a bender for hydraulic tubing.

 

[TonyHallo]

There was an old hand wheel off the mill-drill that looks to be the right diameter so a bender is in the future.

A fixture was made to hold the 1/4" tube for the main strut in the lathe, end mills were used to put both fish mouth cuts, the fit was perfect.

 

[TonyHallo]

A 5/8" round bad was cut to length and drilled and tapped for 4-40 screw to hold the short piece of 1/4" tube in place while silver soldering, this kept everything in proper alignment.

Two magnets were used to hold the tube in place while the 1/4" tube was silver soldered to the 5/8" tube, then the top joint was silver soldered, finally 1/16" sheet steel reinforce was added. This is when I learned that magnets loose their magnetism when heated above a certain temperature, I almost had the reinforcement tacked in when it fell out! I have several shifts on these struts already and still need to make the trailing links. The parts below are cleaned and fluxed, ready for heat.

 

[TonyHallo]

Wasn't happy with the cabin roof so it was cut apart and re-glued. This time package tape was used for release rather than wax paper, it seemed to work out better. The wax paper kept tearing.

 

[Alky6]

FWIW, I’ve found parchment paper to work much better than wax paper. Build is looking amazing. Very impressed with your work.

 

[Snoopy1]

Wasn't happy with the cabin roof so it was cut apart and re-glued. This time package tape was used for release rather than wax paper, it seemed to work out better. The wax paper kept tearing.View attachment 108689 View attachment 108690

The wing is a work of art it’s a pity that it will all be covered up.

 

[TonyHallo]

FWIW, I’ve found parchment paper to work much better than wax paper. Build is looking amazing. Very impressed with your work.

Thanks, will try parchment paper in the future. The packaging tape worked well, the wings are separated and slide in freely once the packing tape was removed.

The wing is a work of art it’s a pity that it will all be covered up.

Can't wait to get the Stits on it!