Peter Miller Posted February 3, 2019 Author Share Posted February 3, 2019 Hi TIm THanks Oh Yes!! GRaham is already interested. It should be a fun model to play with Quote Link to comment Share on other sites More sharing options...
Daniel Cardona Posted February 23, 2019 Share Posted February 23, 2019 Following with great interest peter! I have a question tough, its regarding the rear balsa dowels. if for some reason one cannot find balsa dowels , could be possible to built the rear part with balsa squares instead? regards daniel Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 23, 2019 Author Share Posted February 23, 2019 Hi Daniel. SLEC can provide balsa dowels. but you could use 1/4" sq if you wanted. 1/4 sq. would actually be harder which would be better as I found that the specified "hard" balsa dowels were not as hard as I would like. In fact you could use ordinary 1/4" dowels (Or 6 mm) as I found that the CG was actually further foward than I had expected using a 2200Mah 3 cell battery. Quote Link to comment Share on other sites More sharing options...
Daniel Cardona Posted February 23, 2019 Share Posted February 23, 2019 Hi Pete Yes i know Slec has a wide selection of material but problem is since I’m from Malta its really a pain getting stuff here with the postage costs, hence why i have to improvise when building from plans. For example in this case, in order to build the fuselage i was already thinking to use 1/8th poplar ply instead of 3/32 balsa and 1/32 ply. Not because of balsa sheets right now i have plenty but 1/32 ply its a pain to get it. 1/8th lightply on the other hand i can get it easy. kind regards daniel Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted February 23, 2019 Share Posted February 23, 2019 As usual Peter lovely wood working skills. May I ask what servos you will be using in the wings for ailerons? Thanks Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 23, 2019 Author Share Posted February 23, 2019 Hi Daniel Yes, that should be fine. I would suggest getting a 1/4" diameter round file as you will need to make grooves in the ply to take the dowels. You could cut them down where they go over the ply but I woud suggest making the transition from round to half round over an inch or so to avoid a sudden change in section which is always a weak .spot Hi Fly boy. The model uses a total of 6 9 gram metal geared servos. All from Hobbyking. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 23, 2019 Author Share Posted February 23, 2019 Oh yes, I should have said. Test flights tomorrow so with a bit of luck flying shots on Monday. Quote Link to comment Share on other sites More sharing options...
fly boy3 Posted February 23, 2019 Share Posted February 23, 2019 Thanks Peter. Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted February 24, 2019 Share Posted February 24, 2019 Brilliant, I have always intended to build a Peter Russell STOL, this will fit the bill perfectly, will this plan be in RCME? Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted February 24, 2019 Author Share Posted February 24, 2019 Yes, Graham said he likes it. However how lomg it will take before he uses it is another matter. Today is test flight day. look for details tomorrow sometime Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted March 2, 2019 Author Share Posted March 2, 2019 Just realised that while I had put the model on the "New Models thread I haven't put it here. Well I can tell you that the model flies like a dream, IT is rock solid in flight so one can concntrate of actual positioning rather than flyimg. It is also highly controlable but very positive. It is NOT atall aerobatic. I was able to fly for the camera in a very small area doing tihhty turns etc close to the ground without any worries. I did not get it to stall or spin. I now have to learn to do those ultra short takeoffs and alandings Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted March 2, 2019 Share Posted March 2, 2019 Looks great Quote Link to comment Share on other sites More sharing options...
J Moyler Posted March 2, 2019 Share Posted March 2, 2019 Looks a nice model. One that I would like to build. Well done Peter. Quote Link to comment Share on other sites More sharing options...
Fun Flyer Posted March 2, 2019 Share Posted March 2, 2019 Posted by Peter Miller on 02/03/2019 08:23:13: Just realised that while I had put the model on the "New Models thread I haven't put it here. Well I can tell you that the model flies like a dream, IT is rock solid in flight so one can concntrate of actual positioning rather than flyimg. Now there's a surprise!!! Quote Link to comment Share on other sites More sharing options...
Martyn K Posted March 20, 2019 Share Posted March 20, 2019 That looks great Peter. Very nice Quote Link to comment Share on other sites More sharing options...
Levanter Posted March 20, 2019 Share Posted March 20, 2019 Peter Absolutely on my build list so looking forward to the magazine. When you know which issue, will you let us know. Another one of your quirky designs you like so much. If I can take off and land on my balcony I will be well chuffed Levanter Edited By Levanter on 20/03/2019 13:45:43 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted March 20, 2019 Author Share Posted March 20, 2019 It will probably be announced the month before and that couldbe the first I know but if I know before I will tell you. It depends on the size of your balcony.... Oh! And I have found another quirky design.. Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 This will be a summarised build blog of Frank Knapps Li’l cub. This will be the free plan in June’s RCM&E. Just to wet the appetite of aspiring builders, Peter had kindly sent me a copy of his original hand drawings, sketches and some build notes, and will be using those as a basis for the No 2 protoytype build. The plan is for an electric powered 55in span model around 1:6.5 scale and 3 Lbs AUW. It’s and all wood build. The Knapp original is a heavily modded Cub J3, stripped to bare essentials, lots of carbon fibre , new STOL wing with flaps and leading edge slats. In 2017 the aircraft set a new STOL world record at Valdez, with a take off in 13 feet 8 inches, and a landing in 10 feet 5 inches. A reputed top speed of 62mph with its large low pitch prop to maximise take off thrust. I have made a few minor changes to the original that will hopefully work out and add a touch more scale fidelity. I will detail these in the build blog. Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 I made a start with the tail, elevators, rudder and fin. The tail has a 1/4 in balsa spar and laminated outlines from 3 x 1/16 balsa strips. I made the laminate mould from 6 mm depron. The balsa was soaked in my custom soaker, a length of old waste pipe sealed at the bottom with aluminium duct tape, fill with hot water, pop in the balsa, bung the end with a piece of foam, and 10 mins later you have pliable balsa ready for bending, I used Titebond and held the laminates in place with masking tape. Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 Completed outlines, I left in the join on the elevators spar, which I will cut out once I put in the wire joiner, makes the job easier and keeps all nice and flat Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted April 9, 2019 Author Share Posted April 9, 2019 Hi Tim Glad to see you here. Your mods and improvement will be very useful to others. I may comment on some of them. Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 Completed fin and rudder Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 I have opted to use polyspan (polyester tissue) for the covering. This is iron on using Balsaloc ( or In my case Impex Pva, which is in the gold bottles from any haberdashery or Hobbycraft store). It shrinks on like solarfilm, heat takes out the wrinkles, shrinks round corners really well, then 2 coats of dope to seal it. I have airbrushed Dulux tester pot yellow, mixed to Lockhaven yellow, the True cub yellow colour, the rudder has 2 coats on it probably needs a another coat Edited By Tim C on 09/04/2019 14:30:56 Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 Covered fin in polyspan Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 9, 2019 Share Posted April 9, 2019 I have opted for polyspan as the covering medium, for those not familiar, this is a polyester tissue, it’s lightweight, strong for it weight, but the strength is a bit unidirectional, in that it tears more easily on one direction than the other. It heat shrinks but needs a separate heat sensitive adhesive. I used Impex original hi tack all purpose glue, available from most haberdashers, it used by sewing and garment makers. Polyspan is applied glossyside up, the adhesive I thin very slightly, maybe mines thickened, as the bottle is over 4 years old! Brushing on a coating on the balsa surfaces and letting it dry, lay over the polyspan tacking down and pulling it tight, I use a slightly hotter iron than with regular covering circa 130c, once it’s covered, I ramp up the temp to 170c and shrink and seal up the edges. Repeat the adhesive on the reverse side and brush a coating on the overlap edges and repeat again, What you end up with is a nice wrinkle free taught covering. Next off I used a coat of shrinking dope to seal the surface, but WBPU seems to work as well, though needs an additional cote. Already for top coat colour cote. Quote Link to comment Share on other sites More sharing options...
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