Slopetrashuk Posted January 7, 2009 Share Posted January 7, 2009 The story is here: http://www.jartworld.com/jartworld_pgs/jartworld.htmland here: http://www.jartworld.com/jartworld_pgs/building.htmlIt's fair to say that the Jart is an evolution and continues to be so but derived from an F-20? No not really. Influenced by many things the Jart - But also carefully thought out.Andy Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 7, 2009 Author Share Posted January 7, 2009 Glad we got that cleared up!Now, where's my shopping list? Ah yes. I've already got Gorilla glue, glue gun and spackle, all I need is a new radio and3 x HS 85MG servos1 x 2000mha 6V Rx batt2 x servo covers1 x 50 and 1 x 100mm roll of CW tape1 x charge switch/jackGlosstex ...and we're away!One thing that really bugging me - and have yet to see fully how other LEG machines work out - is balancing the thing. Once it's all together there's no opportunity to get in there and add any weight. Unless I just dig in somewhere then tape over afterwards...Just have to suck it and see I guess Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 7, 2009 Share Posted January 7, 2009 Im sure there will be those who disagree, but I would suggest that - like many things - not all CW tape is created equal. I have found that the cheaper variants do not last as well as the more expensive ones, and I can say that the stuff that Alan head supplies for instance, is excellent if indeed a little more pricey. Be sure to very lightly sand off the release agent first, before applying finish ( I guess you knew about that )PS " Unless I just dig in somewhere then tape over afterwards.."Sounds like a plan to me. Surely a small slit to insert any required flattened church roof could be easily disguised. Of course, it may well be that if you fit it out as desigend it will be good to go anyway. Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 7, 2009 Share Posted January 7, 2009 Some very useful info inthe jartworld forums regarding the processes you are about to commence. Perhaps a read first might be good time invested.BTW - Everybody HAS seen the forecast for Sunday over the rock haven't they? Quote Link to comment Share on other sites More sharing options...
Peewhit Posted January 7, 2009 Share Posted January 7, 2009 Matthew,You can always leave a small piece of CW tape and covering film not stuck down around the nose area.Then dig in and insert your church roof, followed by a bit of spackle to level things up.Then, stick down that last bit of CW tape and film. Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 7, 2009 Author Share Posted January 7, 2009 Thanks Andy - I had read pretty much all I could find before I hit the credit card, and have been chatting via email with the LEG guys since it arrived. I guess I had better start the build!Remember - this is all your fault! Quote Link to comment Share on other sites More sharing options...
grizz Posted January 7, 2009 Share Posted January 7, 2009 Don't I get some blame for starting the original JART enquiry thread ? Instead of tape,have you thought of using the vynyl that sign writers use ? My man ,who makes my model logos tells me it will stretch over and round curves with a little low heat - Im going to try it on a"Combat Wings "slope wing -I'll let you know how I get on with it. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 7, 2009 Share Posted January 7, 2009 Andy Ellison wrote (see)Some very useful info inthe jartworld forums regarding the processes you are about to commence. Perhaps a read first might be good time invested.BTW - Everybody HAS seen the forecast for Sunday over the rock haven't they?OH yes..... bring on the wind - would be nice bonus if it just shifted slightly westerly too I take it you are coming again then Mr E ? Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 7, 2009 Share Posted January 7, 2009 Well.........My heavies are not programmed into the new radio yet and 40mph at valley could well top 80mph on the lip.hoping for a little swing.We'll see. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 7, 2009 Share Posted January 7, 2009 Yep, 80 at the top could be easily seen ....... still we will see on the day, we all know what forecasts are like Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 7, 2009 Author Share Posted January 7, 2009 What the hell is THAT!!! Jeez - anybody would think you were excited.Time for Andy to make some seagull kebabs a la Jart! What would a foamie Jart make of these conditions? Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 7, 2009 Share Posted January 7, 2009 I suspect it might make a short trip back across the car park!You're gonna need a wing loading of around 30oz per square foot to properly play out in those winds and fly where you want too..Assuming you can get it to the edge without snapping in two of course!Stock foamie jart might come in at around 17oz per square foot.Fit a ballast tube! Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 7, 2009 Author Share Posted January 7, 2009 Seriously? From what I have read a ballast tube would be a bad idea.I'd be happy with a wing loading that allowed me to play in less blow - my thinking is that this will give me more chance of flying it at a wider range of sites, in less epic conditions.Mind you, every holiday we take in Cardigan seems to bring epic wind - and that's in August!I will certainly be taking it with me this year. At this rate I won't have room in the car for me bucket and spade. Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 8, 2009 Share Posted January 8, 2009 I would have thought that with the LEG Jart just as with the Jart LT it will be all too easy to overdo the ballast and upset the wing. The Jart LT likes say 8-10oz in the right sort of air but you're pushing the airframe if you go to a pound or more. Quote Link to comment Share on other sites More sharing options...
Pete Stevens Posted January 8, 2009 Share Posted January 8, 2009 I've built one of these and originally I used 35mhz but switched to 2.4ghz its fine you don't need spoilers. But its surprising how much room the carbon takes up in the fuse so fitting a ballast tube needs some thought In the end I didn't bother. Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 8, 2009 Author Share Posted January 8, 2009 OK - spent good hour on the 'phone to Stan at PMP (he likes a chat, doesn't he!) - and ordered all me bits. Andy E - Stan says hello and thanks you for the recommendation.Everybody take note - Stan now has NO MORE models left! Does this mean we now have to import all our foamies? The build will soon be underway... Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 8, 2009 Share Posted January 8, 2009 I have news on many and varied 'new' foamies coming in a magazine slope column near you soon. Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 8, 2009 Author Share Posted January 8, 2009 ooooh - excellent! But let's get this one up first!I decided to go with four cells in the end, but a good 1600mah capacity. I now need to find a source of 3M77 spray... Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 8, 2009 Share Posted January 8, 2009 4 cells, on Spektrum, in the cold, and in a high performance model - not the best choice IMO Do-able for sure, but make sure they can deliver their stuff - just because they are "high capacity" does NOT mean they will be able to deliver ...and Spekky receivers are known for their low voltage / brown out vulnerabilties. Surely you could have snuck one more cell in there ? - perhaps by making up a pack with a 3+2 layout?? Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 8, 2009 Author Share Posted January 8, 2009 oh er, um. I was led by Stan on that one - he figured that with three servos 4.8v would be fine. Should I get on the blower in the morning? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 8, 2009 Share Posted January 8, 2009 Well as always, ask 100 different people the same thing, and get 100 different answers. Not wishing to decry in any way Stans advice - I would just wonder how much experience and knowledge he has of Spektrum gear ? I have a LOT - this is the key factor here. As I said.... 4 cell will probably work, but I just like to play safe with nice and somewhat pricey toys, and for the sake of squeezing in one more cell...well, as the yanks say - go figure Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 8, 2009 Author Share Posted January 8, 2009 I hear you Timbo - thanks for steering me in the right direction. Quote Link to comment Share on other sites More sharing options...
Slopetrashuk Posted January 9, 2009 Share Posted January 9, 2009 Stan used to sell 3m77 or contact Mark Nickson here: http://www.electric-planes.co.uk/accessories.htm Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 9, 2009 Share Posted January 9, 2009 Dont you ever sleep Mr E Quote Link to comment Share on other sites More sharing options...
Matthew Lloyd Posted January 9, 2009 Author Share Posted January 9, 2009 No sleep 'till Llandudno!Folks please note: No 3m77 at PMP5 cell pack on its way... Quote Link to comment Share on other sites More sharing options...
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