Nev Posted February 13, 2014 Share Posted February 13, 2014 Just a quick post to start the blog off. Don’t get too excited I haven’t done anything yet but I have finished off all the other projects. A Turbo Beaver for me and a V Trainer for my lad to play with, among other things, so the Mini Jazz is next. This will probably be a bit of a lazy build. I’m not building for Greenacres, just for fun Quote Link to comment Share on other sites More sharing options...
Andrew Price 2 Posted February 13, 2014 Share Posted February 13, 2014 Hi, looking forward to this. Andy Quote Link to comment Share on other sites More sharing options...
Nev Posted February 13, 2014 Author Share Posted February 13, 2014 If you haven’t seen what you get, this is the CNC wood pack, probably worth buying, the wood is nice, I think from SLEC going by the packaging. This is the additional wood pack, which you probably wont need, in hindsight neither did I, mostly 1/16 sheet and ¼ square. The canopy and cowl from MHS and the undercarriage and skid from Carbon Copy. Most of this has been on the top shelf for the last 12 months, waiting for me to get my finger out, so thankfully I’ve forgotten how much it all cost. Electrical bits donated by a now deceased Whizzzer and I’m sure I have servos somewhere, that’s nearly as good as a free build. Need to think how its going to fit, there’s not much space. Edited By Nev on 13/02/2014 13:39:27 Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted February 13, 2014 Share Posted February 13, 2014 Hi Nev Starting mine in a couple of weeks and will also be electric,so watching with interest. Can you tell us the electric set up you're going to use please. Andrew Quote Link to comment Share on other sites More sharing options...
Nev Posted February 20, 2014 Author Share Posted February 20, 2014 Looking forward to your blog too Andrew if your doing one, we can crib of each other. The motor is an EnErG C3514 1100kv, probably a bit over the top for the Mimi Jazz but it’s spare and reading other peoples posts a bit of extra weight in the nose is not a bad thing. This one is good for 350, 400 W with an 11 or 12 inch prop. I don’t think we have that much ground clearance though so I’m hoping for around 250W with a 10x5.5 will be enough, if not I have higher kv one somewhere. The ESC is a Scorpion 45w Commander. I’ve found this to be a good one too but it is a bit bulky, I may have to downsize a bit. The battery is just a 2200mA, 3S, nothing special. Quote Link to comment Share on other sites More sharing options...
Nev Posted February 20, 2014 Author Share Posted February 20, 2014 Having had a look at the CNC pack and detached all the ribs, I suddenly realised that they are cut from 1/8 sheet not 1/16. I assume this is a mistake, I’ve had my pack for a long time so recent ones may not be the same. I wanted to try and keep the model light, I’ve built enough heavy ones. So I found a bit if thin’ish walled tube about 20mm diameter and sharpened the end with a dremel and went from this. To this. Which resulted in a massive weight saving of 6g !! From 22g without holes to 16g with holes. Was it worth it, I’m not so sure. Whishing I hadn’t bothered with the wood pack now Quote Link to comment Share on other sites More sharing options...
Nev Posted February 20, 2014 Author Share Posted February 20, 2014 Another implication of the thicker ribs is that all the shear webs now need to be 1/16 shorter. So anybody in the same boat, reading the plan where it says cut 8 at 75 wide and 3 at 50 wide, remember to make them all 1/16 shorter or you will end up trimming them all down like me. Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted February 20, 2014 Share Posted February 20, 2014 Hi Nev Now got a motor though it's not to hand,so can't tell you what it is now but smaller than yours. Hoping for 250watts on a 9x6 because as you say ground clearance is an issue. As for your ribs,with so few i wouldn't have thought weight an issue by going to 1/8th. Still a week or so from starting but i've almost got all the bits together. Keep going.....i'm interested in how you're going to make the battery hatch... Andrew Quote Link to comment Share on other sites More sharing options...
Nev Posted February 20, 2014 Author Share Posted February 20, 2014 Still a long way off the battery hatch yet. I’m starting with the wings but it will be something like this one I did on a build a while ago, just smaller. Quote Link to comment Share on other sites More sharing options...
Andrew Price 2 Posted February 20, 2014 Share Posted February 20, 2014 I'll tick the box this time. Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted February 20, 2014 Share Posted February 20, 2014 Good stuff Nev......Dowels and magnets?. Andrew Quote Link to comment Share on other sites More sharing options...
Nev Posted February 24, 2014 Author Share Posted February 24, 2014 Hi, I did a little work on the wing at the weekend. First step to glue the ¼ strips onto the leading and trailing edge sheet and pin to the board. The ribs are on loose just to get the position correct. Next using the pre cut webs fit the centre ribs. Then carry on with the rest, I had to keep checking and trimming the webs so I didn’t overrun at the ends. The piece of ¼ square is just a scrap piece to make sure the webs are in the right place. Looking at the front of the wing, it seemed an easy next step to curve up the bottom sheet to the ribs fix with CA so that’s what I did. Starting at the middle and working my way out. Quote Link to comment Share on other sites More sharing options...
Nev Posted February 24, 2014 Author Share Posted February 24, 2014 Next I planed / sanded a slight chamfer onto the bottom of the false leading edge and fix in position. Followed by the top spar. A light sand over the top of the spare to knock of any corners and again sand down the top of the leading edge with a chamfer. Followed by the top sheet. Up to now I have only used CA but for the top sheet I used alphatic, to allow enough time for all the pins, clamps and bits of tape. So this is where its up to so far while it dries. This is a very quick build, another hour and the wing will be done. Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted February 24, 2014 Share Posted February 24, 2014 Certainly steaming ahead for a "lazy build" Nev! BEB Quote Link to comment Share on other sites More sharing options...
Nev Posted February 24, 2014 Author Share Posted February 24, 2014 Yes BEB. I was surprised how quickly it went together. It may be next weekend now though before I get the “hour” it needs to finish the wing. Quote Link to comment Share on other sites More sharing options...
Masher Posted February 24, 2014 Share Posted February 24, 2014 Well done Nev, coming along nicely. I can now confirm that you will be well rewarded for the effort on this model. Quote Link to comment Share on other sites More sharing options...
Nev Posted February 24, 2014 Author Share Posted February 24, 2014 Thanks Masher. I enjoyed followed yours and Kevin’s builds so am not expecting any problems. Looks like you had fun with your maiden, Nice one. Nev. Quote Link to comment Share on other sites More sharing options...
Masher Posted February 24, 2014 Share Posted February 24, 2014 Oh yes - and it's so much better when you have built the whole thing as opposed to the ARTF. I think I might do another and try an electric power version Quote Link to comment Share on other sites More sharing options...
Nev Posted April 21, 2014 Author Share Posted April 21, 2014 Don’t know where the time went there, work and a few day hols, didn’t think it was that long though. Anyway, servos in and hinges cut. A little bit of sheeting in the centre section, once the wing dowel is fitted. OK, well it took longer than an hour but the wing is done. Quote Link to comment Share on other sites More sharing options...
Nev Posted April 21, 2014 Author Share Posted April 21, 2014 Now to the main bit. On the plan and CNC part set I have, the tail has a lot of positive incidence, as has been mentioned before. So rather crudely I admit, I filled this in on the pre cur fuselage sides and re cut the tail slot at zero incidence. You cant really tell from the photos but for CNC parts I am very surprised at the difference in the two sides. I have trimmed these to match and have taken off as much as 1/16 " in places. Quote Link to comment Share on other sites More sharing options...
Nev Posted April 21, 2014 Author Share Posted April 21, 2014 Now. As well as the tail, the main wing also has a lot of positive incidence, shown on the plan and the pre cut parts. I was going to take some of this out a bit by cutting the fuselage sides and raising the trailing edge. Having followed Kev’s and Mashers build, among others, who I think just went with the plan and both these two gents have reported excellent flying characteristics. I think I am just going to go with it and not worry, it is a very fat section after all. More soon I hope. Nev. Quote Link to comment Share on other sites More sharing options...
Nev Posted May 5, 2014 Author Share Posted May 5, 2014 Well, getting there. I apologies for the lack of commentary but I think its all been covered before. Usual build shots, I've gone for the thin ply doublers and also a cross brace for F3, although I may have put it at the wrong side. Both sides joined. sided glued and a small brace added to stop the middle bowing out too much Finally, undercarriage plate added Getting there, its too nice to be inside but i need to get it finished before October. The battery has an obvious place, not sure about a hatch yet, or where the ESC will go. Quote Link to comment Share on other sites More sharing options...
Nev Posted June 15, 2014 Author Share Posted June 15, 2014 Slowly but surely, these bits are very simple. I elected to join the elevator halves and will go with single snakes for elevator and rudder. Although I’m not spending much time on the build it is very straight forward and would probably have been finished a long time ago. The thing that has slowed me down is trying to cram in all this electric stuff. Not much room to get everything in. Also I’m trying to shoe horn in a 2200mA battery, because I had them and didn’t want to buy something smaller just for this. Still I think its sorted now. Not much to do now. Quote Link to comment Share on other sites More sharing options...
Nev Posted July 21, 2014 Author Share Posted July 21, 2014 Well trying to crack on a bit, made a start on the covering. fitted the elevator, rudder etc after covering and to make things easier, also fitter the horns before fitting the rudder in place, this is where i discovered my not so deliberate mistake. Still sorted now and just to keep the enthusiasm going a quick shot of where we are tonight. Fitting out next then I can position the motor to get the best balance, I'm hoping to be able to pack it off a bit so it moves forward into the cowl ( sure I'm going to be lucky there ! ). once the motor position is sorted then last job will be to fit the cowl, hopefully without too much hacking about. Nev. Quote Link to comment Share on other sites More sharing options...
Martyn K Posted July 23, 2014 Share Posted July 23, 2014 Looks very nice Nev. A good build Martyn Edited By Martyn K on 23/07/2014 17:28:45 Quote Link to comment Share on other sites More sharing options...
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