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Topics - Spanner

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Slope Soaring / Nose repair / reattachment on my glass F3B model.
« on: October 19, 2024, 14:59:56 PM »
Having snagged a wing tip while landing on Mt Leinster at our last meeting in September the model started a ground loop which quickly converted into a wingover and the model landed vertically nose down and facing downwind. The arrival looked and sounded nasty.
Having recovered the model thankfully the only damage was an almost completely sheared off nose and a slightly damaged nose cone. (see photos)
Back at home I decided that to prevent further damage I should glue as much as possible back together with super glue. Having checked that all was straight I left overnight to cure, while I contemplated as to how I might carry out a proper repair.
What was decided was to cover the remaining holes with yellow insulating tape polish up the nose and we would be good to go.

But only to phase two!

As I did not wish to damage the fuselage behind the joint with the nose cone the repairs would have to be done internally, but how there is no way in? I decided that the servo tray would have to go, but before doing this I had to reinforce / support the damaged area from outside. This was done with a fiberglass wrap which I could later remove.I then cut away the servo tray and got clear access to complete the repair.
I ground away some of the original glass on the damaged area and filled using a mulch of chopped carbon and resin L. when this had cured I laid a strip of 50mm glass tape 200g/sqm from the rear of the wing joiner box to close to the nose, this reinforced the seam and the break. When this was set I ground down the edges so that I could get a good bond for the next layers. I added a tow of carbon along either side of the opening to replace what had been damaged in the break and this was in turn covered with a layer of glass tape on each side of the opening. These strips extended from the incidence pin location to just in front of the fuselage opening and again I ground back the edges when the resin had cured. I put two further strips diagonally over the damaged area this complete the internal work and the crutch could then be removed.
I then made a replacement servo tray which I bonded in with resin. when all was cured I ground away the damage from the outer area along the lines of the break and again laid up a mulch of Carbon Glass and resin. This got sanded back with wet and dry filled and sanded again before touching up with paint.

While the final result is not perfect but I am pleased with how it has turned out and the total weight gain was only 10g.


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Slope Soaring / Killakee Tomorrow Tue 17th evening
« on: August 16, 2021, 14:51:55 PM »
Hi All,
Anyone interested in heading up to Killakee Tuesday evening.
Westerlies forecast for this evening until Wednesday evening but turning very light on Wednesday.
I am planning on heading up tomorrow Tuesday evening if anyone is interested.

Joe

3
PSS / Joe's F86 PSS build
« on: June 21, 2020, 15:09:04 PM »
Hi Bill,
How is the Sabre coming along.
I have been hammering away at one too. Found similar issues with the fit of parts.
Maybe you should have used a proper hammer !
Mine is almost finished it is ready for flight and just needing registration numbers and some more detailing.
I went for a four servo wing and installed a servo in the fin to operate the rudder. A lot of work and I am now thinking that I should have kept it simple  and installed full span flaperons and fixed rudder as the installation became quite fiddly.
However I am pleased with the result.

Joe

4
Slope Soaring / Killakee today
« on: June 21, 2020, 11:44:03 AM »
Hi All
Anyone thinking of going to Killakee this afternoon forecast looking good between 3 and 6 PM.
I am thinking of going out badly need to blow off some dust.

Joe

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Scale / 1/4 scale Grunau baby
« on: February 06, 2018, 19:51:19 PM »
Hi All,
A new baby has arrived, a little premature but should be developed enough for March fly in. I have copied the finish of the previous one I owned but did not sheet the wing with ply and chose  to just stain the balsa. Fuss is covered with 1/64 and 1/32 ply which is also stained.
Thanks to Fred in Island Models for donating the partially built kit, following me having written off my previous one on my first attempt to fly it.
There was very light lift and with a rearward c/g and the model was struggling to stay up ( that's what I tell myself ) unfortunately it came back to earth out of sight into the side of the slope and was badly damaged.
Looking forward to getting back to flying and to see all the new toys that we have produced over the winter months.

Joe

7
Scale / Annother Islandmodels 1/3 Scale Ka8b build log
« on: May 07, 2016, 12:13:52 PM »
Hi Guys
Yet another Ka8b on the way,
I started building this some months back from the excellent short kit supplied by Fred at Islandmodels. All ply parts nicely laser cut and slot together perfectly, 3 x sheets of drawings one with all the parts drawn up which will allow you to replace any parts that you may damage or loose during construction or hopefully not after a bad arrival.
To start I made a simple jig out of some pine strip wood and cut out MDF set squares which can be clamped in place to hold all straight and true during construction. This can obviously be reused for other models. I have attached some photos of the basic fuselage nearly complete before removal from jig. If this attempt at posting works for me I will post more soon showing progress to date.

Joe

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