Matt Halton Posted April 25, 2011 Share Posted April 25, 2011 Mário- A fine aeroplane and fine flight, absolutely wonderful, the video was amazing. Big congratulations! Matt Quote Link to comment Share on other sites More sharing options...
Supermario Posted May 31, 2011 Author Share Posted May 31, 2011 Hi guys First thank you for your kind words ( those I haven't thank yet ) and then A.A.Barry forgive me for all this time without answer you. About using FS 40 in a way I think more power in the plane gives more confidence because you know that if you need power you have it and this is important, BUT if you have only the power to fly like the real one you have to fly like the real one and that's is a challenge for the pilot ( in almost models we fly we have much more power that are needed and that make us power adicted because power solve many of models flying problems) As a conclusion, and that's only my opinion, this Halifax don't need the extra power that gives the 40 FS, because she flyes quite well with the 30's. Regards Mário PS - I have more videos that I can put later.Edited By Supermario on 31/05/2011 00:39:49 Quote Link to comment Share on other sites More sharing options...
Supermario Posted May 31, 2011 Author Share Posted May 31, 2011 Hi guys, as promised Regards Mário Edited By Tim Mackey - Administrator on 31/05/2011 19:29:36 Quote Link to comment Share on other sites More sharing options...
Terry Walters Posted May 31, 2011 Share Posted May 31, 2011 Brilliant Mario - the world needs people like you! I feel very humble when I see what you have done. I usually don't like to see large scale models actually flying because they don't look right with their speed against the background of a real sky but you have changed all that for me - encore maestro! TW Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted May 31, 2011 Share Posted May 31, 2011 Hi Mario, I presume you mean 10400 grams? Quote Link to comment Share on other sites More sharing options...
Supermario Posted May 31, 2011 Author Share Posted May 31, 2011 Hi Mr. Mackey Yes you are wright. In Portugal we put like I do separating the units from the decimals with an (,) 10400 gr = 10,4 Kg = 10,400 Kg = 104 dg = 1040 cg Thank you for fixing the video Regards Mário Quote Link to comment Share on other sites More sharing options...
Ian Whittaker Posted August 14, 2011 Share Posted August 14, 2011 HI ALL. A rather late update on progress. Despite my best efforts during construction to keep the weight down to somewhere near the figure of the prototype, i was significantly over, even before painting / detailing. With the 4 SC30's running well, on a 1 mile concrete runway the plane was struggling to lift off, and managed only about 3 feet. After much discussion with others, the conclusion was reluctantly drawn that while it would probably get off the deck if i uprated to OS40 (4 strokes) or the SC52s, flight would never be be pleasurable or even safe due to the very high wing loading, and the landing speed would be far too high to ever allow safe operation from the (large) grass fields near home.As to refit flaps would be a huge task and would only add to the weight, i have reluctantly pulled the plug on the project.The plane seemed tail heavy first and foremost, with a significant amount to lead in the nose required, as well as the heaviest radio batteries i could find.In retrospect i still don't see where my mistakes lie, i built as per the plan, using the wood supplied in the pack, picking the lightest for the tail wherever possible. My fibreglassing was sanded down to a mere coat, and of course the paint / tail turret would have only added to the tail weight requiring even more metal f'wd. Oh well. That's aeromodelling i suppose! All the best, Ian. Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 Hi Ian how heavy did yours come out in the end? Couldn't find a figure.CheersDanny Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 Hi Ian how heavy did yours come out in the end? Couldn't find a figure.CheersDanny Quote Link to comment Share on other sites More sharing options...
Ian Whittaker Posted August 14, 2011 Share Posted August 14, 2011 It worked out about 13kg i believe. Ian Quote Link to comment Share on other sites More sharing options...
Andy Wood 1 Posted August 14, 2011 Share Posted August 14, 2011 Hi all Mine is quite heavy been electric & worked out to be just over 13Kg with flight battery’s and fly's ok, so if mine flies at that weight maybe you are under powered, however I don’t know how my electric motors compare power wise to glow. Cheers Andy Edited By Andy Wood 1 on 14/08/2011 17:54:25 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 What was the combined wattage Andy? 750 watts is roughly 1 HP CheersDanny Quote Link to comment Share on other sites More sharing options...
Andy Wood 1 Posted August 14, 2011 Share Posted August 14, 2011 Hi Danny The motors are Turnigy 50-55A 400kv Outruners on 3300 mAh 4s 30c packs if that helps Andy Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 What props Andy? Might be able to make a stab at the power Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 What props Andy? Might be able to make a stab at the power Quote Link to comment Share on other sites More sharing options...
Andy Wood 1 Posted August 14, 2011 Share Posted August 14, 2011 Master Airscrew 12x 8. 3 blade Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted August 14, 2011 Share Posted August 14, 2011 4S is going to give around 6000 rpm on 14.8 volt pack, HC recomend a 14 x 9 on 4S you are using a 12 x 8.3 3 blader which would be around a 13 x 8.3 two blader. Unbelievably nobody seems to have reviewd it with just 4 cells.but optimum is 50A max is 68A Chris Bott and I just played with some numbers. Drivecalc says that you should get 256 Watts. Sounds way too low to me. I usually push that motor to between 500 and 1kw.However here are the numbers. If you times that by 4 then we get roughly 1kw. For a 13Kg 28.6lb model that is only 34 watts per lb. John Ranson flew his 100" Lancaster on 40 "Brushed" watts per lb. I would have opted for more power, personally, and would love to know the numbers you get from a wattmeter Andy??? so 1kw is roughly 1.5Hp Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted August 14, 2011 Share Posted August 14, 2011 Hi Andy, Danny only just brought this thread to my notice, I do appologise, don't know how I've missed it.It's very interesting to me as I hope to be building the John Ranson Lancaster soon. It did surprise me that you are flying OK on 4S with 400Kv and 12" props, but then John did explain that 40W/lb was fine for the Lanc. Something to do with it being a "blown" wing. i.e. there's lift generated by prop wash even without forward motion. Quote Link to comment Share on other sites More sharing options...
Andy Wood 1 Posted August 15, 2011 Share Posted August 15, 2011 I’ll put a meter on next time I run the motors & get some numbers for you Danny. However with all this said it was never going have or need anything like sports performance or a need to do anything more than fly to scale. Andy Quote Link to comment Share on other sites More sharing options...
aerts michel Posted February 11, 2012 Share Posted February 11, 2012 Hi to all, just wanted to know how those Halifax are flying. Are there some of them still in service? Especially Andy who had a landing crash. I hope now the plane fly again... About me well... I had stoped construction when the wings where almost ready and since I have done some ARFS and also I have flown my fiberclassics douglas DC-3 succesfully. best regards to everybody Michel Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted February 11, 2012 Share Posted February 11, 2012 there was a one getting built up here(north east)..... but the stress proved too much for the builder....... and he ended up in therapy.... ken anderson ne.1. health dept.... Quote Link to comment Share on other sites More sharing options...
George Redford Posted February 24, 2012 Share Posted February 24, 2012 I have read all the posts with great interest and have found them to be very informative, it is a pity that the efforts of Ian Whittaker met with such a disappointment, please contact me Ian if you want to sell the airframe only, I have crashed my Hercules and am looking for an an airframe to replace it. Quote Link to comment Share on other sites More sharing options...
aerts michel Posted March 19, 2012 Share Posted March 19, 2012 Hi, if someone is interested i might sell my full kit. The wings are built at 90% and also the stab at 75%. for the rest it is the original wood pack kit and vaccum parts and plans. I also have the unitracts retracts with wheels.... of course everything is in Belgium ... Quote Link to comment Share on other sites More sharing options...
Andy Wood 1 Posted April 3, 2012 Share Posted April 3, 2012 Hi all Still gaining experience with mine , Flew it again yesterday, I am feeling more confident with each flight Andy Edited By Andy Wood 1 on 03/04/2012 10:47:41 Quote Link to comment Share on other sites More sharing options...
aerts michel Posted April 3, 2012 Share Posted April 3, 2012 Hi Andy, glad to hear your plane is flyeing better now! After some hesitations after reading some unsucessfull flights I restarted building my Halifax. I am building the fuselage now. I have some questions about the flynig charcteristics of your halifax: wich is your auw? do you have flaps? is the cg ok? do you have to keep airspeed for landing? regards Michel Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.