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Posted by FWAL | Feb 03, 2015 @ 04:58 PM | 4,481 Views
This is how I went about making my first fin. It started by purchasing a 1mm thick A3 size sheet of Carbon fibre. Cut two strips 50mm wide and cover the good face with low tack masking tape. Then chamfered the internal surfaces of the trailing edges (TE). Once done I taped the two TE's edge to edge and applied a thin bead of Gorrila epoxy. pic 1-2
Then folded one side over but spaced them apart at the leading edge (LE) and clamped the TE together. Once cured I cut a 4mm wide strip of carbon sheet and glued it just inside the LE which had previously been chamfered at roughly 45 degrees. Then I used epoxy to glue a 2mm dia carbon rod into the rebate to form a rounded LE. pic 3-4
It was then my intension to then push a 2mm dia rod inside the two skins to form an aerodynamic shape. However, as much as I tried I couldn't get the rod more than 12-13cm down inside the fin. So taking a big step backwards I split open the LE, positioned the spacer rod inside the fin and re glued together the LE. pic 5-6
All cleaned up and she looks pretty smart. A careful coat of clear nail varnish (Lacquer) on the LE a file to the TE and another polish and she'l be good to go. 395mm long 49mm wide 4mm thick she weighs 68g
Posted by FWAL | Jan 27, 2015 @ 06:38 AM | 3,354 Views
Last night after a good dose of sanding Rebel was removed from the shadows. 2.5mm balsa, 1 wetted out layer 80g/m2 F/G and 2 subsequent coats of west resin. Present weight 84g or just under 3oz. I think I'm in the right field!
Posted by FWAL | Jan 20, 2015 @ 04:11 PM | 3,590 Views
Added extra balsa to the wing leading edges to improve the profile which might have been a bit blunt. Also made a ply plate to help reinforce the area around the wing locating dowel which will be fitted at a later date.
Cut and fixed the upper deck longerons so now this model has really starting to take the form of a Hurricane.
The view of the tradesman's entrance shows the plastic tube which passes through the firewall and is fixed to the front of the GRP cowl. The tube will be loaded with balancing lead and the battery pack. The RX will be fitted to the ply plate on the left and the apertures for the servo's and switch have also been formed.
Work is still ongoing at the tail and a fair amount of fettling will be required to make this area more life like. At present and following the plan there's not a lot of scale detail with regards to fairing in this area.
Posted by FWAL | Jan 18, 2015 @ 03:56 PM | 2,686 Views
Gosh! How does a forecast of a NW12-16mph wind just the day before be so wrong! At the lake it was more like Southerly 1-2mph with an occasional NW shift. Still we had 12 close races between a MX14, Goth EVO and Harry's BOR.
It was also the maiden of my first effort into IOM sailmaking. The conditions weren't exactly ideal but the shape appeared to be OK and once I got my head into gear and a couple of small tweaks later I managed to win a couple of races. However, I'm not going to read too much into todays results as the conditions were a little fluky. Lets hope for a little more wind in two weeks time what ever the weather man says.
Posted by FWAL | Jan 16, 2015 @ 04:41 AM | 3,678 Views
Graham Bantock's, Brad Gibson's and MK's IOM sails. When making my next suit (which could be sooner than I thought) I think I will be adding to the luff and flattening the main. I'm pretty happy with the shape of the jib.
When I finally make a sail which I'm happy with I might purchase some double matt film!
Posted by FWAL | Jan 15, 2015 @ 04:23 PM | 3,548 Views
Harry's IOM sails are now rigged and they aren't too bad. There is definitely room for some refinements to improve their shape but I'll play around for a little while before jumping into the next suit. I should also make sure that the next sails are legal and the sail numbers are correctly positioned. I was so keen to use my home made stencil I put the first number in the wrong location. I noticed my error almost at once but it was to late the pen had streaked it's black inky mark on the film so there was nothing I could do but complete the task somewhat gutted.
Still looking on the bright side the Hurricane is coming along nicely
Posted by FWAL | Jan 14, 2015 @ 11:45 AM | 2,774 Views
I have finished making my first suits of sails both for Rebel a RG 65 and also a suit for Harry's IOM, Bor. Now we just have to wait till Sunday to see how Harry's new sails perform. Between now and then I just have to stencil in the sail numbers and fit them to the spars.
At the same time I have also been doing a bit to the Hurricane fuse including the upper decking, cockpit, cowl and wing tips.
Posted by FWAL | Jan 12, 2015 @ 05:38 PM | 2,399 Views
Rebel's balsa core hull has been laminated with 1 layer of 80g/m2 fibre glass. I'm hoping this will be adequate and offer enough impact resistance. The internal surface of the hull will also be laminated around the high load areas of the fin box and mast.
I have also made my first suit of sails which in the whole was an enjoyable job. However, the mylar film sets in a better shape on one tack better than the other so perhaps I'll be making another suit pretty soon. This evening I've drawn out a new IOM main for my sons yacht and will turn the film over on each alternate panel to try and stabilise the shape. I can't be too fussy as I bought over 20m of 50 micron film for just over 8.00 inc p&p on eBay on Christmas Day! Unfortunately, it's not double matt sided so one side has a very glossy finish but I doubt this will have a major effect on actual performance.
Posted by FWAL | Jan 07, 2015 @ 04:52 AM | 3,085 Views
Yep, here we have two poseurs showing off their 3D gliders. A brightly coloured Vagabond and a slightly more subtle (plain Jane) Traceur. Due to the pretty windy conditions and a couple of test crashes they were grounded during this slope session.
Posted by FWAL | Dec 30, 2014 @ 02:28 PM | 3,316 Views
South Gower slope action from gopro and sanyo

the cobra bites (2 min 34 sec)

Posted by FWAL | Dec 26, 2014 @ 05:17 PM | 2,782 Views
The 66" Pegasus Hawker Hurricane kit was taken off the "To Do" shelf the other day, opened and work has started in ernest. I wanted to push on with the wings so I could reinforce the wing joint at the same time as laminating the Rebel RG 65 project. The fuse is also making steady progress but a little less messy.
I carefully remove the veneer put aside for re-use and dust off my trusty Bosh to router out the wing servo apertures. Then using an old tent pole I carefully drill the conduit for the servo cable. Following that I used the same technique to recess the
Flap servo.
Posted by FWAL | Dec 19, 2014 @ 09:22 AM | 2,864 Views
Rebel has been planked and faired. Those curves are all man and hand made without any form of software intervention or Can't Frigging Design ( CFD) assistance.
Posted by FWAL | Dec 14, 2014 @ 08:33 AM | 3,353 Views
It's such a shame to see these once lovingly constructed, pristine models being left to rot. There's a Catalina, Leopard Moth, A4 Dutton perhaps a DH Vampire and Sunderland.
If you are of a sensitive disposition you'd better look away, what you are about to witness could be very disturbing.
Posted by FWAL | Dec 13, 2014 @ 05:08 PM | 3,810 Views
Magazines from 1936-37, make sure you view all the photo's in this thread....Continue Reading
Posted by FWAL | Dec 10, 2014 @ 05:45 PM | 2,253 Views
The photo's below were taken just a couple of miles from my house. The 1951 National Championships at Fairwood Common Aerodrome. Awards being presented by Lady Whitten Brown. Wife of the then deceased Sir Arthur Whitten Brown the first man to fly across the Atlantic non stop in 1919. Photo's include Mignet's own Flying Flea, a Model of a Gypsy Moth which flew from Britain to Australian in 1934, Leopard Moth, Slinsgsby Grasshopper or similar and members of the Swansea Aeromodellers Club....Continue Reading
Posted by FWAL | Dec 09, 2014 @ 03:05 PM | 2,583 Views
This part of the build has got to be one of the most rewarding. With each plank the hull shape develops in front of you and you cant help but start imagining the completed model effortlessly gliding through the water.
The majority of the planking to the freeboard has been cut to taper from 5mm at the stern to10mm at the bow. Even though this design is slab sided and the freeboard could have been cut from a single sheet I chose to plank it due to the additional stiffness laminating achieves and also to reduce the likelihood of twisting by the alternate turning of each plank end to end. It's how they made the old wooden spars in the old days to stay relatively straight and strong.
When it comes to cutting the normal planks I cut the individual strips using two lengths of alloy angle, one placed on top of the other. It's quick and accurate.
Posted by FWAL | Dec 07, 2014 @ 10:24 AM | 1,968 Views
Yesterday I visited a friend to look at a pond yacht he had inherited. Specifically he wanted ideas and help to make a new rig and sails as the originals were long gone.
After a little searching I believe 'Endeavour' is an early (1929) 36R . I have come to this conclusion due to her size:
Length 35" Beam 11" Draft 7" weight roughly 11lbs. These measurements fit the 36 Restricted Class perfectly.
Now it's up to the new owner to decide exactly how far he wants to go with the refurbishment, but if it was up to me I would strip the existing finishes right back and complete the painting and fine coach work back to the original. Re-rig and have new traditional clothed sails made by Frank Nylet. Then go and show her off in the best arena possible, a Victorian built boating lake. Although, the nearest one is 50 miles away at the Knave in Barry, South Wales.
Posted by FWAL | Dec 05, 2014 @ 10:08 AM | 3,180 Views
Not sure if I've mentioned this is in an earlier post but in this case I don't mind repeating myself.
I love 5mm thick foam board! There you go I've said it
A scalpel slices through the straight cuts and the scroll saw makes light work of the curves. Yellow paper templates stuck with Pritt on to the white board helps to show you exactly where to cut. Pins have a fair hold just in the foam but for a better grip it's better to pin at angle to pierce the paper as well.
Next job is to strip down some sheets of balsa into 3,5 and 10mm widths.
Posted by FWAL | Dec 02, 2014 @ 03:57 PM | 2,443 Views
When my head hit the pillow last night and my imagination kicked into the usual modelling hyper drive a cantilevered sail control arm flashed into my minds eye. All of a sudden I could see how a normal length servo arm might provide enough sheet travel for my latest Rebel RG65 project.
This evening I set about knocking up a crude experiment just to see if my idea had any legs and I was quite impressed. A normal servo arm radius of 25mm provided 100mm of sheet travel. Another advantage is the torque isn't jeopardised and it's also relatively light. All together a win, win idea perhaps.
The first photo shows a standard futaba 3001 servo in the sheeted in position and in the second photo the servo is in the sheeted out position. The geometry can be improved slightly to further reduce the holding torque required whilst in the sheeted in position.
Posted by FWAL | Nov 30, 2014 @ 02:45 PM | 2,467 Views
Today at the lake three of my design and builds were competing. The wind was very light and kept us guessing which direction it would come from next but that was nothing compared to the course. For some unknown reason it was set back to front with the only beat from the gybe to the leeward mark and it wasn't impossible to complete a lap without a single tack.
Besides that it was a good feeling to watch my handy work being raced and enjoyed.
7 BOR 80, Vertex 99, Edge 35