john stones 1 - Moderator Posted June 11, 2014 Author Share Posted June 11, 2014 Done my wheels, little off centre, but will leave them on may give you a laugh if it resembles a clown car Just closed loop to do so looks like im ready for next weekend , will bring some sunshine with me John Edited By john stones 1 on 11/06/2014 22:53:46 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 13, 2014 Author Share Posted June 13, 2014 All done balances with no lead, I used some fishing swivels for rigging wires, post is not glued in so it will transport easier, need to find a lady pilot for Sunday. Take her for sea trials after work tomorrow John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 13, 2014 Share Posted June 13, 2014 nice very nice indeed hopefully the maiden will be, in BEB's words, a non event Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 13, 2014 Author Share Posted June 13, 2014 It will Phil thanks, let you fly it Sunday John Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted June 13, 2014 Share Posted June 13, 2014 Looks the business John - very smart! Happy maiden. BEB Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 13, 2014 Author Share Posted June 13, 2014 Cheers BEB John Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 13, 2014 Author Share Posted June 13, 2014 Only just spotted it, C.G. seems to be well forward on the plan 48 mm from leading edge Did you lads find this o.k. or did you feel it was nose heavy? John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 14, 2014 Share Posted June 14, 2014 Posted by john stones 1 on 13/06/2014 21:50:14: It will Phil thanks, let you fly it Sunday John I assume your talking about Sunday the 22nd John to be fair I'm very cautious about flying another's model especially one so new and nice thanks for the offer though, if it was serious Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted June 14, 2014 Share Posted June 14, 2014 Posted by john stones 1 on 13/06/2014 23:38:08: Only just spotted it, C.G. seems to be well forward on the plan 48 mm from leading edge Did you lads find this o.k. or did you feel it was nose heavy? John I went with the CofG as indicated on the plan. I also had to add 6oz of church roof. Fly`s fine with it there. Kev Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted June 14, 2014 Share Posted June 14, 2014 Mine has the CoG on the nominated spot and feels fine - it could probably go back just a little, but its certainly not unduly nose heavy where it is. I didn't need any lead - though I have crammed everything (battery, speed controller, current sensor, ESC) as far forward as I possibly could and have a domed nut on the prop and a heavish wooden prop compared to say a lighter APCe. BEB Edited By Biggles' Elder Brother - Moderator on 14/06/2014 14:12:49 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 14, 2014 Author Share Posted June 14, 2014 Got up nice and early, do some final checks before I go field can't get bullets to fit motor on esc, 1/2 hour later I realise I put male ends in for safe keeping when I soldered females on It's not good this getting old lark. So I plug it all in to set throttle range on esc....can't get out of programme mode ??? read instructions try 3 times ..nope still can't do it. Leave it and have cuppa.... this happened with Pushycat, what did I do ? Simple....plug esc into throttle port on rx NOT the battery one John p.s. its raining Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 14, 2014 Author Share Posted June 14, 2014 Had wattmeter on, it shows 290 w (motor is 375) and 26amp This is on a 375w motor 2200 mah 3s lipo 60 amp esc..on an apc 12x6 prop Is this about right or should I go different on prop ? John Quote Link to comment Share on other sites More sharing options...
Biggles' Elder Brother - Moderator Posted June 14, 2014 Share Posted June 14, 2014 I think that sounds fine John. 290W is enough for this model - certainly for now. You could look at going to a 12x7 at some time in the future - but I wouldn't worry about it too much. Hope the rain stops for you - I'm on the edge of my seat here! BEB Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 14, 2014 Share Posted June 14, 2014 Posted by Biggles' Elder Brother - Moderator on 14/06/2014 14:12:16: ....... and a heavish wooden prop compared to say a lighter APCe. BEB Not sure which make of prop you have there Dave but the ones I have for the BS (from 4max) are lighter by a few grams than their equivalent APC(e) ones, as I understand its this and the lower flexibility that makes them more efficient, certainly the BS flies at 78w/lb on a wooden prop much the same as she does at 92w/lb on an identical size "APC(e)" one and the battery lasts longer big + all round I'd say My guess is the revs are up too though not had chance to check that. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 15, 2014 Author Share Posted June 15, 2014 Went this morning, grey sky, took a bit of seeing with silver wings So how's it fly ? very good...a few clicks of left in (bit too much side thrust). Rolls nice, stall turns are good, loops from level flight, spins easy and recovers on releasing sticks. Takes off in no time, even with home made wheels and it's very agile. Nobody there with a camera so this is best I've got John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 15, 2014 Share Posted June 15, 2014 Nice result John better than my A test attempt lol still alls set for a resit on wed and the weathers looking less gusty Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 15, 2014 Author Share Posted June 15, 2014 Part 2 Phil....here's what happens when an idiot's flying your model Who's the idiot ?...me was enjoying myself and turned too hard at walking pace. You get your A passed, i'll get my model repaired John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 15, 2014 Share Posted June 15, 2014 Ouch, still at least it made it into the air more than can be said for one club member today who using a pair of 3s lipos in series accidently substituted one for an identical looking 4s one the reaction took approx 5 mins and was fatal for the unmaidened super chippie Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 15, 2014 Author Share Posted June 15, 2014 OOh don't like look of that Phil, he's overdone the weathering. We all make mistakes, trick is to learn from them John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 15, 2014 Share Posted June 15, 2014 oh I think he learnt ok, as did we all, I was stood 4' from it when it happened, it sounded like a roman candle going of and the smoke was, as one would expect, very intense my guess is he will rebuild it, though it may take a while to say the least. One very expensive mistake, 2 batteries, Rx, ESC and motor, plus the entire forward sect of the fuse to rebuild, and a new canopy and cowl. £££'s and to cap it all the photo's are in the club hall of shame album on face book still we now know who to ask to light the next club BBQ. Quote Link to comment Share on other sites More sharing options...
Gary Manuel Posted June 15, 2014 Share Posted June 15, 2014 John, Sorry to see your pride and joy looking like that. Get busy - I'm sure you have the technology to rebuild by next week. Phil, I'm guessing he was running 2 batteries in Parallel, not Series, and it was the potential difference / circulating current that caused the problem. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 15, 2014 Author Share Posted June 15, 2014 Easy repair Gary all the spars are o.k. John Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted June 15, 2014 Share Posted June 15, 2014 I Think you may be right Gary not sure why I said series never been a fan of parralell btys with out a schottky diode in line to prevent back charging, one may have helped here but also the voltage differential would prob have blown the diode any way Quote Link to comment Share on other sites More sharing options...
Devcon1 Posted June 15, 2014 Share Posted June 15, 2014 Oh dear.... These things are sent to try us. Pass the glue.. Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted June 15, 2014 Share Posted June 15, 2014 That was rotten luck John, I know just how you feel. I feel for the chap with the Chipmunk as well. I've done daft things more than once, it's the reason why you use check-lists for everything when you are flying full-size, there's a lot to be said for it. Quote Link to comment Share on other sites More sharing options...
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