1:4 1928 RRG Professor

[Tango Juliet]

Wow! This is really going to be nice. Where'd you get the pulleys?

[stevekremer]

Pretty Slick!! Nice job!

Steve K

[ARUP]

All of the shear webbing has been installed! Whoopee! That was a bit of a boring job. I was going to actuate the ailerons via a torque rod with cranks to drive cables to the aileron horns but there isn't enough room for the outboard cranks inside the 'D' box portion of the wing. The ailerons have two set of horns connected to cables. One is only 3 ribs over from the outer panel root end and the other is 11 ribs out. So... pulleys and cables will be used... just like full scale! Waddayaknow! A lot of time was spent running dummy cables to get the lead outs or ferrules installed. 1" diameter pulleys were used. The outer aileron horns have pulleys stacked one above the other and the inboard ones have them separated. The last two pics not only show the inner end pulleys but the outer ferrules pre- and post- installation. More stuff has to be done but I spent a lot of time on these little details!









More to come!

[ARUP]

I did get a small chunk taken out of my nose last week! Some kind of 'wart' or other... will find out soon when get lab results.

[JimD]

...and Don McLean might write a song about you!

[kjkavaney]

I thought you already were missing part of your ear Michael ??? I must have mistaken that...
kevin

[ARUP]

Hi David, if this will encourage just one person to build then it will be worth the time. I really enjoy this stuff and get lost in time and place doing this!

[ARUP]

Kevin, thanks for checking out the build. Like I told Tim... if I start cutting off my ears or doing some other strange things then maybe my 'art' might become worth something! lol

[Sled-Works 1]

Great stuff Michael. Thank you for sharing your fine work.

[kjkavaney]

Michael the artist...no other word describes you ...
awesome.
kevin

[ARUP]

The outer panels have their upper and lower spars along with their lower aileron spars installed. Next will be the 'cutting-in' of the upper aileron spars into the structure so not much of a photo-op, there. It would just be a repeat of the previous stuff! The shear webbing is getting installed. That is a visually boring job but a 'cute' little device was fabricated to clamp the webbing in place while the epoxy cures. This pair of doo-dads were made necessary because the wing tubes are a bit wider than the spars. The webs have to bend around the wing tubes a tiny bit. The spar edges were sanded fair to the wing tubes to get as tight a fit as possible. The root end of the spar will be under the most stress, I reckon. The shear webbing is cut 'on the bias' as per full scale practice and is probably over kill but that's all right! The first pic shows epoxy curing while the 'doo-dads' were holding the shear webs in place with the aid of a clamp. The next pic shows the root end shear webs in place with the doo-dads and loose shear webs lying about. Two tiny thin spacers keep the doo-dads from getting stuck to the sheeting in case some epoxy squeezes out.



The next post will be when the shear webbing and upper aileron spars are done. Cheers!

[ARUP]

Yessir, Jeremy... Father Time keeps marching! It'll be ready barring accident or catastrophe!

[Swiss1]

!3 weeks Mr Kelly! Tic Toc.

[ARUP]

The aileron false spar slots were cut and the false spars were let into the structure. The outer portion of the spars are thinner stock because the aileron (and wing) tapers in chord and thickness. After this was done the wing was put back onto the board top side up and with the wash out jig in place so that the upper spar and wing tube packing could be epoxied in place. A bit of masking tape acts as a depth-of-cut gauge for the slots. The same method of using a straight edge to guide the saw cuts was used. A scrap of appropriately wide scrap was used to make the slots an interference fit for the spar so even if the spar isn't dead straight it will be after being let into the structure.







The aileron false spar is in two parts so that separating the two will be easier. They are pinned together so that they could be glued to the structure as a unit. More to come.

[ARUP]

We got a snow surprise! It rained and the wind blew, then it sleeted and then the snow stuck to all of that! It sure was pretty! I slipped the outer panels onto the inner for grins. That's a lotta wing area! Currently, the aileron spars are getting 'cut in' to the structure and a neat method will drive the ailerons to use cables in scale locations without the need for crummy servo hatches spoiling the 'scale look'! It's all about 'smoke and mirrors'... baby!




Gute nacht!