Projects

Rubin Build Log

rubin

With the Covid-19 creating a lockdown I now find the time to build a few more projects that have been waiting for some attention and has an ample supply of balsa in stock.  First project on the bench is a Rubin by Wolfgang Matt and H. Nishioka.  F3A-Model
Europameistermodell 1992 and 1994.  Wingspan -184cm.  Length - 80cm.  Weight 4.3kg.

Fuselage is underway. A very simple box with thick sheets of balsa on top of the nose in front of the canopy.  Turtle decks cut from white foam and skinned with 1/16 balsa using Gorilla Glue. I was not looking forward to cutting these, but they were a lot easier to make than expected.  Fin and rudder made in the same way. They're curing now and can come out after about 3 hours...much quicker and easier to work with than epoxy.

 Once glued to the fuselage and carved/sanded to shape you get a very strong but light fuselage.

 

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Superwing 1550 Build

superwing

What to do with a 1550mm EPP slope soaring wing? First a little history. I have had this wing for some years now purchased from Hobbyking. It's initial outings were purely as slop soarer and performed well although not a fast wing, more like a lumbering bomber. At least it was not bothered with the collisions from the more popular 46 inch Zagi, X-its and similar clones who just bounced of it and spun to earth. Flying it got boring so was stored away and forgotten. Some time later during an idle hands moment I spotted it laying around in the back of the workshop. After some measurements I decided to bring it back to life again as a slope soarer with a difference, it would have a fuselage and tail fin and hopefully look like a delta wing aircraft.

 

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Ranger 1600 - Matek 405 Wing

ranger 1600 original

The Ranger 1600 from Hobbyking is another plane from the milk bottle stables, ie; plastic fuselage and very similar stabiliser and tail fin to the Phoenix glider range.  The big difference though is the plug in wings so no screw driver required.  The Ranger is designed for much easier hand launching and virtually a mid-wing type plane.  This model is very similar to the Bixler series except it now has a virtually indestructable fuselage!  The front nose has a flat area with a small aperture for a camera if using it as FPV.  It is quite capable of powered flight or used for slope soaring, your choice.  The plane comes with  pre-wired servo connections, 30 amp ESC and a unbranded 2212 1400Kv brushless outrunner and designed to run on 3 cell Lipos in the 1600 to 2200 maH range. These batteries will balance the model perfectly.

 

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Phase 5 by Chris Foss

Phase 5 Maiden Flight

After many years of procrastinating I'm finally building a Phase 5. Designed in 1978 this model is often considered to be Chris Foss's (CF) best slope model. It was never available as a kit so the only way to get one is to build it yourself. CF is still selling the plans if you fancy one.

The Phase 5 plan calls for a built up wing but I'm deviating from the plan and making one from foam with a balsa skin. A snow day today meant I could make a start. CF does not specify what sections are used for the root or the tip so a bit of guesswork and internet trawling resulted in the semi-symmetrical E374 for the root, modified a little to make it thinner. The tip is fully symmetrical and is between NACA 0010 and 0011. It's actually 10.67% thick so maybe it's NACA 0010.67?

 

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