OLY III 2018/19 Build

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Any new work and pictures is added to the bottom along with a Date they where Posted

Oct 24, Deep Cleaning all Pieces

  • did I mention CF strip on the upper spar
  • CF tow lower spar
  • triangle gusset from nose block back to former at wing rod tube, fuse bottom I like to round the corners here
  • CF pushrods.
  • will look at getting the elevator pushrod to exit within the walls of the fuselage
  • removable, bolt on stab is in Order
  • jump in with your Build Ideas

Sept 25

More Pictures soon, still time to grab a Kit and join in , chime in with you Build Details, Pictures, queries and ideas.

  •  Instructions mention extra ply root ribs for side of fuselage, will cut them from 1/8 lite-ply as couldn’t find them, 1/4 to 3/8 Inch fillet
  • some formers for fuselage are numbered, will sort thru to ID their location, tabs will need a bit of thinning to fit slots
  • will add hole to nose block for lead
  • found spare set of 1/64 ply doublers for stab
  • ribs are all numbered, still looking for some reference to these numbers elsewhere on the plans or documentation

UPdate, Aug 28 2018

there’s appears to be interest in a parallel Build with a fellow Builder in Ohio

woo hoo,

UPdate, May 31 2018

This project is still a go just need to clear some other stuff from the Deck. Apparently these Kits are hard to get now, that surely will create demand

May 21 2017

Well here we are 2017 May already, have had a chance to look thru this kit and so far I like what I see, everything nicely packed. I might add though that the spars don’t fit into the rib notches, there’s at least 1/32 ” in the difference. In this day in age with Laser cutters I would have thought that getting these notches to fit the spars would be a pita.

I will file the notches wider, and I reckon they will have to be deeper as well, to suit the spar material supplied.

The one other item I have learned to watch for is warped fuselage sides. They are laser cut from a sheet and I have seen the straight edges top and bottom get a twist as much as 3/ 16. If that is one way on 1 side and the other opposite it makes for quite a challenge getting a straight fuse.

Stay tuned :)

Dec 17 Unpacking a Oly III Kit, nicely done

p1190234 p1190233 p1190232 p1190231 p1190230 p1190229 p1190227 p1190226

Oct 18 (S)

  1. Painted white fuselage and canopy
  2. canopy and hatch ?
  3. 1450 LiFe Battery  Size( L   w   h  )
  4. 6110HV x 2 Servos Wings
  5. 6100HV x 2 fuselage
  7. Violet transparent
  8. :)

wonder about the Silver though.

white vertical fin and rudder

all white fuse and canopy


Oct 18 (S)

  1. Painted white fuselage and canopy
  2. canopy and hatch similar to Sagitta 900
  3. 1450 LiFe Battery  Size( L   w   h  )
  4. 6110HV x 4 Servos
  5. :)
  6. :)


Oct 12   (S)

Yes, tape on wings

(built up wing saddle on fuse)   requires longer wing rod.

+ servos in the spoiler bays

You could simply run the spoiler servo lead inside the fuse –

I would simply plug the spoiler servo leads to leads from the Rx.

Build Moving Forward, Dec 04

Took a minute to weigh some pieces and get some thoughts on what direction to head



tip pane ribs

1/8 x 3/8 spars I have marked the weights

wing panel LE Balsa

trailing edge , can’t remember?

wing tips

fuselage sides, rear top filler, etc

fuselage lite ply

spar ply doubblers and panel joint doubblers

Canopy and canopy aft Balsa

Some more weights

rudder , fin , stab doublers, I found spare doublers as well

Nose Block, will hollow out Later

Balsa shearwebs

Misc Hardware

Lite ply sheets

Lite ply fuse sides

fuse formers, removed from sheets need more holes , up down?

rear fuse ply doubler

forward fuse sides, and doubler, aft sides are balsa

glue with bottom edges aligned against level, and checked for straightness

forward ply aft Balsa, watch for warps in lower edge of rear balsa, it needs to be straight

Ready for ply doubbler

Some More Fuse Build, a Look at the ribs


I just stacked both sides with doublers and glue in place and weighed them down, Once the ply doublers are in place I’ll see how all the formers fit

ribs , 5-15 is ribs 2 thru 15 panels

No notches for spoilers, and the root balsa rib has a hole for wing rod tube

tip panel ribs

more ribs

ribs 5 thru 15 and 2 thru 4

spars a strong 3/8 inch , perhaps 1/32 over

spars a strong 1/8 thick, they need to fit the notches

got them stacked and now will file the spar notches

same for the tip panel ribs

Ok, these look better

Fuselage sides and formers, whats Up, where do they go, get it right

DEc 14 , Getting things right

nose block and fuse pushed together

formers appear to fit this way, dry fitting clears up a lot of things. Not going to use the tray as servos have different size

more glue

doublers at Rear?

nose block lead room, a bit of a guess, I may not need it later though

rudder, top and bottom get some sheet

wing panel trailing edges, used top and bottom 1/16 sheet

wing panel ribs spar leading edge

tip panel start, rear of lower TE sheet is cut straight to start

Number 27 is not the last rib, I had to look for number 28 :)

fine measuring , no more questions

Pins,  is that spar glued to the sheet , and yes, it is   not parallel to the rear edge. Kind of a gottcha moment here.


So are the spars in one plane or the rear edge of the d-box sheet, will have to check that out before I join the inner and outer Panels.  Long wings, you going to build joiner boxes and a Joiner

DEC 18    More Wing Panel Build, Inner Panel, with CF strips and Tow

CF strip at top and tow at bottom on inboard panel spars

lower sheet and spar, spar glued in place and then I pin it down

lower rear trailing edge , I like to bevel it before I place it on the board

here is the spacer I use between for and aft lower sheet

forward sheeting with lower spar in place

spar located and glued in place

straight edges all around, I like to draw the lower dbox sheet with spar affixed back to a straight edge before I get started with the rib placement

placing the lower sheeting, I like to use a spacer and repeat with the other side panel

one rib at a time, have a piece of aileron stock under the LE of the lower d box sheet, and that way I can glue the full lower rib edges.

making sure the lower rib edges are down flat to the board

Dec 28



I like to bevel the TE sheet before adding the ribs

the inboard lower filler sheet, a clean round and the other side is here somewhere

some pins get the two edges down tite

added some marks for the ribs here, to get them located later

left inner panel lower filler sheeting

left panel and lower inboard sheeting

more left lower sheet

upper spar in place

forward ply spar doubler

More Fuselage

Fuse formers, I have the orientation in order, and as part of the diet plan, making holes bigger

Holes cut and cleaned up

HV 6100 servos, and big holed servo tray, I am going in a different direction

still dry fitting, and the pushrods should go thru here

there’s a spare hole perhaps for a antenna guide for 72 MHZ

Root ribs from 1/8 lite ply will be added to the fuse 3 pieces each side. Longer tube and wing rod in order though

OK, this should work, but will fillet nicely once this gets glued together

the tabs and corresponding slots needed some slight clean up to slide together

canopy opening doubler fit to fuselage formers

OK, this should work

I want to round the forward bottom corners, so I have added a lower 1/4 x 1/4 fillet

All good

Fuselage Cover, really

Lower fuselage ply set , aligned with premarked centerlines, and marks on formers.

I don’t use clamps here just some weights

ply doubler for tow hook

I had previously notched the bottom corners of the formers to allow the lower corner tri to pass thru

I needed some filler here to get the top of the nose block wider to suit the width of the fuse once the balsa gets added to the side

fuse hatch frame and 1/32 ply cover

This cover turned out clean, and will need some accoutrements added later to keep it attached to the fuselage

Going to clean up the tail and get the horn for the elevator in the center of the fuselage

rear doubler for the inboard end of an inner wing panel

soon, panel join and top sheeting

More Photos

rear doubler in place, there are two actually

left panel second doubler, I added a doubler at a tine

pull wires so I can weave some thread thru later to wrap the spar buildup

wrap sheeted undersides should go better with this setup

OK, here I have some thread thru

a couple loops to get thread moving in both directions

this should do it

3 bays each with a wrap

These lines will get tied off and I will spread a bit of epoxy over the lay

I have shaped the leading edge to tie into the upperside of the lower sheeting

the upper edge of the leading edge is also shaped to a large extent before it gets glued in place

I’ll set this aside for the glue to set up

working on the tip to inner panel join

tip panel block up, and aligned over a straight line on the board

spoiler servo opening framing, will pick up the ply covers later

spoiler oping frame

spoiler opening frame

spoiler opening frames in place

spoiler and spoiler sub spar

join at tip panel

tip panel joiner doublers

prefit and ready for epoxy

I will drill a couple holes and run a CF tube between the spar fillers

this should be close

tip shape

wing tip block

On this Day

leading edge top sheet, with a sliver removed from the rear edge to get it straight

about 1/16 or so wide at the middle

here I have added a strip to the forward edge of the top sheet, to make up for the shortfall as a result of setting the sheet over the top of the LE rather then butting it up against the back

trailing edge top sheet, epoxy used at the bevel, and titebond over the ribs.

a level place over the top after will get the sheet down straight

level and weights in place over the trailing edge

pins at the forward edge where the TE meets the ribs

a closer look at the end

a fillet is added top and bottom, where the tip panel TE sheet meets the inboard panel

Feb 13

Some time later, not a big fan of balsa aft fuselage sides, especially when they are accurately laser cut. Trees move, and this balsa is no different

wing root transition 3 pieces 1/8 lite ply at each wing to fuse connection

some CF tube as a spar system for the stab

this 1/64 ply was included in the kit to use as doublers at the stab center

tubing and t nuts, needed for bolt down stab, and center re inforcing

wooden interface locks

need more blocks to secure the fin

2-56 screws up thru to get the lock in the fin

tip block holes

they are supposed to mesh with the wing openings

a bit of weight reduction as well

Mar 03

rear of canopy

magnet latch hold down


Hatch, and forward end will get filled to add meat for a better transition from the canopy

new hatch forward frame member

canopy aft, and bleeding it round into the fuse at the wing roots

Nose shape, still needs some work

here is the sum of what I have done to bolt on the tail group

Mar 17

wow, 2 weeks since I was last here, I have since added the top sheeting , added some fillets into the corners of the boom and got some more detail work done with the canopy and the hatch.

canopy forward edge where it meets the nose block

Canopy rear, as well as forward end of hatch

rear edge of hatch

wing root filler and fillet, needs to be cleaned up and sanded

underside of canopy, left right stops, and forward pin locater

Rear canopy fuse magnets as well as pin for forward edge of hatch

by rotating the pin up, pulling forward, you can release the forward edge of the hatch to remove it

pushing down at the rear of the hatch flips the canopy out

forward edge of hatch

underside of both canopy and hatch

Rear hatch hold down


May Day 2019 May 01

Final days of the Build, Paint, covering, controls, some stab work and of course sanding. I also put some effort into CG at this point, so putting the plane together is also part of the package

set up with 5 cell eneloop, this gives me an idea where to safe some weight, It’s the tail as usual
servos set at wings
looks like I still need to clean up where the wings meet the fuse
left tip panel, these one piece wings are quite long and care needs to be taken with handling especially at the trailing edge where there is no vertical filler sheet between the top and bottom sheet
inner panel, I rounded out the root filler sheet top and bottom I prefer this over square transitions
fin and rudder knock outs, this took 20% of the weight out
stab also needs some knock outs, as well as a bit of a spar after
a bit of a cardboard template will get the same knock outs on the other side
this should work
what color huum, who knows, white , yellow , violet, stripes :)
I transition the holes aft into the moveable part of the stab
yes, nothing exciting here, just a white vertical
The fuse after a few coats brushed on and sanded
rudder clean up, off to covering
fin also gets the white treatment
here we go
violet on the inboard
then blue, and a Yellow tip
still need to run the iron with the sock over, then I go over with the trim iron on the ribs, and more closely on the edges, then another pass with the sock on the big iron

May 05 2019

misc hardware I still need to get in place
servo tray 2 x 6100 servos here
access hatch between wing roots
stab mount, holes for screws to secure stabs, and clearance holes for 2-56 screws that secure fin to H stab
the 6100’s
underside of h stab with 2 screws 2-56 ready to go
screws secure, t- nuts in the other two holes accept the screws that come up thru the boom from the underside
pushrod exit
4 40 screws used to hold stab in place
white for H stab
violet voila
wing set

May 10 , Oly is Finished, will fly soon, stand By