Chris Theakstone Posted July 17, 2011 Share Posted July 17, 2011 Here are a couple of pictures of my new toy !, treated myself to the whole package including retracts and three Flight power 6S 5000 ma 50 C batteries at Wings and wheels. Had three flights so far and all I can say is "who needs a turbine" (well actually I wouldnt mind the P20 conversion) Flys as though its on rails but took a while to get airbourn and landing was fast. I have moved CG to most rearward position which should allow better elevator authority Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 17, 2011 Share Posted July 17, 2011 Looks fab Chris - perhaps altering the AOA when on the ground may help to rotate it earlier?Having said that, I prefer my jets to stay stuck on the deck for a while as they gather sufficient flying speed before rotating. Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 17, 2011 Author Share Posted July 17, 2011 I know what you mean Tim, The big issue was running out of elevator authority on the landing, even being fast using full up elevator it was impossible to land holding the nose up (most were fairly firm landings on all three) I.ve just changed from DX7 to DSX9 so have re-installed the gear with a mix for nosewheel steering as with it Y leaded on rudder it was much too sensitive (this didn't help the take off run) I have read on another forum about putting a 1/4" block under the nosewheel mount to raise the nose a little so may try that after a few more flights. Chris Quote Link to comment Share on other sites More sharing options...
Wiltshire Flyer Posted July 17, 2011 Share Posted July 17, 2011 wow looks really nice! i'm jealous!!! I have always like the lines of the tiger shark myself, i can see some of them in your model too, looks great you must be grinning like a cheshire cat Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted July 18, 2011 Share Posted July 18, 2011 Very nice, what sort of duration do you get with the 5000's Chris? Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 18, 2011 Author Share Posted July 18, 2011 David, With timer set at 3:30 then circuit and land so about 4 min the packs were exactly at 50% (brand new packs so easing them in), Only a couple of full power runs and mostly at 1/2 throttle, so I think with similar flight patterns 5 minutes plus circuit and land Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted July 18, 2011 Share Posted July 18, 2011 Ah yes, no too bad then Chris. Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 18, 2011 Author Share Posted July 18, 2011 It's not the cheapest way to fly but it gets the heart pumping and makes the mouth dry ! It looks and sounds great too Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 18, 2011 Share Posted July 18, 2011 Those are pretty big capacity batteries for that size of model, I see that they recommend this size, but whats the AUW Chris?It really does look like a superb bit of kit.... devil be gone I tell ya! Edited By Tim Mackey - Administrator on 18/07/2011 10:53:05 Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 18, 2011 Author Share Posted July 18, 2011 It weighs 3.1 KG, just a tad over 7lbs (I went out to buy the Foamy version @ £120 BNF but ended up spending about 4 times that amount) Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted July 18, 2011 Share Posted July 18, 2011 As an alternative, the Top Gun Viper Jet weighs 2kg inc air retracts and runs off 3.6 mah 4s (just 1KW on fresh batteries), about 5 min flying time. And I've just bought a foamy Habu Edited By Frank Skilbeck on 18/07/2011 14:19:04 Quote Link to comment Share on other sites More sharing options...
James40 Posted July 18, 2011 Share Posted July 18, 2011 She looks great Chris! It's hard to tell from the pictures but does it have flaps on the inboard of the wing to slow it down for landing? Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 19, 2011 Author Share Posted July 19, 2011 Yes James it has flaps, on advise from others I modified the horn fitting so as to get about twice as much as the manual says and for landing it is set up for "crow" the ailerons go up as the flaps come down. Quote Link to comment Share on other sites More sharing options...
James40 Posted July 19, 2011 Share Posted July 19, 2011 And she still comes in fast....wow!! Maybe an all moving tail and an airbrake would help, certainly the all moving tail to keep control authority.Edited By James40 on 19/07/2011 11:12:30 Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted July 19, 2011 Share Posted July 19, 2011 James, what you have to remember with these non-foamy jets is that the wing loading is quite high, slow them up too much and they just fall out of the sky. They are so slippery though that they are not the easiest in the world to slow down. Your comment on all moving tail planes is interesting, I have some gliders with and without all moving tail planes and I don't notice any difference in elevator authority. Wheel brakes would be a definite advantage though............. Quote Link to comment Share on other sites More sharing options...
James40 Posted July 19, 2011 Share Posted July 19, 2011 It's just a larger surface area acting on the slower moving airflow and the fact that it's using angle of attack instead of positive/negative camber that might improve control authority at low speed. Only a thought. Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 20, 2011 Author Share Posted July 20, 2011 Brakes not needed, the landing roll isn't that long on grass, now I have it set up on my new DSX9 I should be able , using flight modes, to get it trimmed exactly as I want for each flap setting.Add to this different rates at each flap setting , So hopefully the landings will be a little smoother. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 21, 2011 Share Posted July 21, 2011 What was the total all up cost ( less radio ) Chris and where did you source it? Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 21, 2011 Author Share Posted July 21, 2011 I brought it from Motors & Rotors at the wings and wheels show, I had it all packaged including servo's, fan, rx, speed controller (not the Eflight one) and retracts and I think that lot was about £580 ish Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 21, 2011 Share Posted July 21, 2011 Ah, thanks Chris - I just did a similar calculation from Al's hobbies site, and it came in around the same, allowing approx £50 for battery.It is rather nice I must say Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 21, 2011 Author Share Posted July 21, 2011 Tim, my price included 8 servos (all jr), a AR7010, fan and motor and retracts, In addition you need quite a few extensions and a couple of Y leads (amount of Y leads depends on how many channels you have, 7CH you need three Y leads, 8ch you need 2) The speed controller I got from inwoods, a 100A unit with 5A BEC. I am hoping to fly it again tomorrow evening (have to spend the weekend flying my full size plane, I know its a tough life) Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 21, 2011 Share Posted July 21, 2011 Als hobbies came in at £600 also included servos and eflite retracts, with a guesstimate of.... £50 for a battery, £50 for a speedo and £50 for a receiver. This was the breakdown Airframe 195 Fan 25 Motor60 Esc50 Battery50 Retracts 70 Servos 100 Receiver 50 Total..... £600 Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 22, 2011 Author Share Posted July 22, 2011 I spent £70 on good extensions and Y leads (Something this heavy and fast doesn't deserve cheap connections) I brought three FLIGHT POWER 50C batteries @95 each (dont know why as I usually get them from HK) Quote Link to comment Share on other sites More sharing options...
Chris Theakstone Posted July 25, 2011 Author Share Posted July 25, 2011 Three more flights on the Habu this evening, first attempted take off aborted, just wouldn't lift. Three sucessful flights and getting it tuned in with the flap/elevator trim mix (had to start over as I changed transmitters) I think I might try some bigger main wheels to help on the bumpy grass strip. chris Quote Link to comment Share on other sites More sharing options...
colin watson Posted September 17, 2011 Share Posted September 17, 2011 i have been looking at the Habu as a fast fix the big question i have is noise level as the club has an 80db noise level, have you noise tested the model? Quote Link to comment Share on other sites More sharing options...
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