EarlyBird Posted September 19, 2021 Author Share Posted September 19, 2021 and now sheeted. started on the cowl. I like this part, nice soft balsa to cut and shape into a thing of beauty. Getting near the end of the build, only a couple of laser cut parts not used. ? Oh yes I have decided to go with the 3536 910 motor. ? 2 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 22, 2021 Author Share Posted September 22, 2021 As I am not following the plan I am trial fitting. Usual method spinner holds the ring in place along with the front balsa then the bottom balsa is glued followed by the top. Then triangles, if any, and then the sides are fitted. Razor plane is keen to get going ? For ventilation I am using a ventilated spinner and there will also be a hole drilled below the spinner. Just making it up as I go along.? Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 22, 2021 Author Share Posted September 22, 2021 and glued. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 22, 2021 Author Share Posted September 22, 2021 That's tight No it's a good fit. ? 1 Quote Link to comment Share on other sites More sharing options...
kc Posted September 22, 2021 Share Posted September 22, 2021 My Turnigy 3536/9 910kv motor gives 500watts on an 11by 5.5 prop with 4S lipo and has done over 2000 flights in another model. Would be fine on a Ballerina too if the weight is around 4 pounds. 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 23, 2021 Author Share Posted September 23, 2021 Cowl ready Start with razor saw to remove big bits Craft knife then razor plane and sand to finish is the process. More to come. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 23, 2021 Author Share Posted September 23, 2021 That's an amazing difference. Just fit to the fuselage and blend it in. ? 1 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted September 23, 2021 Share Posted September 23, 2021 Rather small inlet for cooling the ESC IMHO and with the servos in the tail you might make provision to shove the battery forward (running 3S2200 and its nearly fully forward/servos in the middle of the fuz for mine). Nice build ? 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 23, 2021 Author Share Posted September 23, 2021 17 minutes ago, Chris Walby said: Nice build Thanks, the main cooling will through the big hole above the small inlet as I have a ventilated spinner. The battery will be either 2200 or 2700 4S and I have made plenty of provision for moving it back to get the balance. Maybe I shouldn't have shortened the nose by 30mm ? oh well we will see. If it goes quiet on here then the worst can be assumed, I don't advertise my mistakes. ? Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted September 23, 2021 Share Posted September 23, 2021 I don't think back will be an issue, I mean my lipo is full forward! Having said that a 4S2700 is a lot heavier so you should be ok...failing that lead in the cowl to get c of g. PS - I wouldn't be tempted to fly with a rearward c of g as its nice and lively on the advertised mark. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 23, 2021 Author Share Posted September 23, 2021 2 minutes ago, Chris Walby said: PS - I wouldn't be tempted to fly with a rearward c of g as its nice and lively on the advertised mark. I like lively. With my Ballerina I gradually moved it back to behind the spar now that was a bit too lively. I now have it on the front of the spar, which is fine for me. I did learn not to have it too far forward as the elevator becomes ineffective which makes for interesting banked turns which quickly turn into dives or it seemed that way. Too far forward or too far back makes for unpleasant flights, that's if you get more than one. ? Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 24, 2021 Author Share Posted September 24, 2021 A bit of bottom sheet made from scrap. Usual method. Cowl fitted and feathering in started. It's coming along. ? 1 Quote Link to comment Share on other sites More sharing options...
kc Posted September 24, 2021 Share Posted September 24, 2021 That cowl looks neat but how do you tighten the prop and get the prop adaptor to grip the motor shaft without being able to hold the motor casing? I find it's necessary to grip the motor casing tightly in order to fit or remove a prop. Quote Link to comment Share on other sites More sharing options...
Trevor Posted September 24, 2021 Share Posted September 24, 2021 As long as the prop ‘bites’ onto the prop driver, you can just hold the prop while you tighten the nut. I agree though that often the ‘bite’ needs a bit of help, for example by cutting out a washer of fine sandpaper or double sided tape to fit behind the prop. Trevor Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 25, 2021 Author Share Posted September 25, 2021 That's not a problem that I have ever had, strange. ? could be that I had plenty of practice replacing propellers when I started. ? The Riot, my first victim, has a full cowl and at the time I never had a problem tightening the propeller, well as far as I can remember, it was three years ago. Three years! time is flying. They say time flies when you are having fun. The shape of the cowl is not quite as I envisaged it so while I am thinking of what to do about it I will move on. Next finish the bottom sheeting and then finish the tail feathers. Itching to do a trial assembly, not long to wait unless I make a new cowl. Quote Link to comment Share on other sites More sharing options...
kc Posted September 25, 2021 Share Posted September 25, 2021 Good that you don't have a problem with the prop adaptor - maybe my prop adaptors are poor quality and don't grip as well as others! Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 25, 2021 Author Share Posted September 25, 2021 Bottom sheeted Then went back to the cowl for another bash. That's better not perfect but it will still fly beautifully I am sure of that. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 26, 2021 Author Share Posted September 26, 2021 Tail feathers shaped, sanded and hinged. Just bits and pieces left to do before final fitting and covering. ? 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 27, 2021 Author Share Posted September 27, 2021 Wings fitted. Not perfect ? Pleased as punch with that, to be honest.? 1 Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted September 27, 2021 Share Posted September 27, 2021 You can't more perfect than that. I never get anywhere near as perfect as that. Wait till you see my next model. NO ONE WILL BELIEVE IT 1 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted September 27, 2021 Share Posted September 27, 2021 Not too shabby that Steve. ? 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 28, 2021 Author Share Posted September 28, 2021 Thanks. All I have to do now is make the other side as good. ? I have been trying to work out how I did it. I realise a lot comes down to the help on this forum but the one change I made on this build was to build the wings first. Then I used the fuselage ply doubler as a profile to shape the wings. Worked like magic. Previously shaping was done by the TLAR method and final fit by adjusting the fuselage wing seat. I knew that was wrong but could not see any other way, I did think of making a profile from scrap ply so I was half way there. Then I am sure Trevor said he builds the wings first and uses the ply doubler, one of those 'it's so obvious' why didn't I think of it moments. From now on building the wings first will always be done. Quote Link to comment Share on other sites More sharing options...
Trevor Posted September 28, 2021 Share Posted September 28, 2021 Glad the method worked for you ?. Interestingly, on my current build I’m building the fuselage first but that’s because it has plug-on wings so the final fit will hopefully be achieved by sanding the root facing ribs. 1 Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted September 29, 2021 Author Share Posted September 29, 2021 One days work for me. That just leaves the tail skid plate to make and fit. ? Final sanding and pre-covering checks are on going while I ponder what the colour scheme will be. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted October 1, 2021 Author Share Posted October 1, 2021 Another days work. Tail skid plate fitted. I keep cleaning up ready to start the covering then find more bits to do. For example a bottom hinge needs fitting above the Skid plate for the rudder. Then the cowl and motor mount need some attention. ? Quote Link to comment Share on other sites More sharing options...
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