Foamie Dave Posted February 21, 2011 Share Posted February 21, 2011 Posted by Steve Hargreaves on 19/01/2011 10:09:22:Could it be.......one of these??? ta da... a couple more pics in the gallery so as not to go too much off topic http://www.modelflying.co.uk/albums/member_album.asp?a=14653 Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted March 21, 2011 Share Posted March 21, 2011 Some shots from todays flying. -Reuben Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted March 21, 2011 Share Posted March 21, 2011 That looks like a full size Reuben!! Nice job posing it for the camera..great pics. Quote Link to comment Share on other sites More sharing options...
Dave Lawson 1 Posted April 21, 2011 Share Posted April 21, 2011 We tried to maiden our Luton Minor yesterday, suspected that there would be a problem as has turned out quite tail heavy and getting in to balance at the plan CofG needed a lot of weight in the nose...result is its too heavy to get off the ground. Can't understand it, built strictly to plan and there's nothing aft of the CoG except balsa sheet...any wild ideas ??? I enjoyed the build by the way, great plan Regards Dave Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted April 21, 2011 Share Posted April 21, 2011 Hi Dave, Cheers for the compliments on the plan. Seems a bit odd its come out tail heavy if theres nothing weighty behind the cg . Can you give me a breakdown on the brand of motor , esc and battery. Are the RX and servos situated as per plan ? , if so what make / model are they? I think the plan called for the cg arounf 60mm (around 2 1/3 ") back from the LE , how far back has yours turned out ? Also how is the model covered ? Cheers Dave Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted April 21, 2011 Share Posted April 21, 2011 Hey Dave, I found the sweet spot on mine by slowly adding weight and ended up with 25grams of lead and 50grams of motor. Mine is a bit over powered but is still a dream to fly -Reuben Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted April 23, 2011 Share Posted April 23, 2011 Mine is a bit over powered but is still a dream to fly -Reuben Nothing wrong with a bit of extra ooomph...u prop hanging and torque rollin yet R ??? Quote Link to comment Share on other sites More sharing options...
ian ludwell Posted May 16, 2011 Share Posted May 16, 2011 Hello to everyone, it was my intention to buld the Luton minor when the plan came out last year,but due to other builds such as the Zulu ET and the Pix-E Major it was put on hold. Seems like a good idea as there are so many wonderfull models to look at,all the info i want is on here,the Luton looks more robust than the Pixie which was constructed of 1/16" balsa open structure aft of the t/e of the wing. Congratulation to all the builders,such a diverse look for the same model. Hope to start the build in a few weeks time....cheers..ian Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted May 16, 2011 Share Posted May 16, 2011 Fingers crossed Ian ..dont forget the Luton pics when its done Quote Link to comment Share on other sites More sharing options...
Dave Lawson 1 Posted May 19, 2011 Share Posted May 19, 2011 Dave (& Reuben) Thanks for your response ofabout a month ago on my tail heavy problem with the LM on our maiden failure.Sorry for the delay but I’ve been out of action in the interim Details are: Motor 4-max PRO-2827-1000(140W) weight 50gESC 4-max PP-TESC20AU weight19g mounted behind Firewall Servos are HS55’s in planpositions Radio is AR500 mounted in Servo Bay(front) Flight Batteryis 1300mah 3S My COG comes out at about80mm, plan was 60mm as you say AUW is 850g somewhat heavierthan plan, covering is Profilm We now think this might flyand that we had a binding problem which has confused the results of the maidenflight, which amounted to a long run and a stall off the ground into the rapefield. Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted May 19, 2011 Share Posted May 19, 2011 Dave & Dave, The extra power is nice but wasted other than a couple of loops. Dave, I havn't weighed mine but it does take a fair bit of runway to get airborne and I don't touch the elevator untill the wheels have left the ground and she's up to airspeed. Keep with it as it will be an enjoyable flyer. -Reuben Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted May 20, 2011 Share Posted May 20, 2011 lol...I'd bet you'll be 3D 'ing and STOL'ing it over summer Reuben . Dave, your build seems pretty much identical to mine equiment wise. The only things I can think of is I used fairly lightweight balsa stock and as its got a long tail this could make a difference. Failing that, I used quite sturdy heavyweight wheels ( our strip is dire and usually kills lightweight ones after a couple of landings..unless its me ) Other than that I used an APC prop ..again fairly heavy compared to say a GWS. If all else fails, add a little noseweight for the early flights at least (always safer than being tail heavy) then try reducing it little by little but stop immediately it starts getting twitchy. As much as dont like adding nose weight to any model its a much much better option than going tail heavy..ask me how I know Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted May 20, 2011 Share Posted May 20, 2011 Dave, The only hoovering I do is to remove the balsa dust from the carpet When it comes to 3D'ing I think I have 2 left thumbs! How's your plan drawing going? any hints on whats next? -Reuben Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted May 20, 2011 Share Posted May 20, 2011 Posted by Reuben Kinghorn on 20/05/2011 20:24:39:Dave, The only hoovering I do is to remove the balsa dust from the carpet lol...know what u mean ..try laminate flooring ..its the future As for the building board, the microlight (as above - full pics here) http://www.modelflying.co.uk/albums/member_album.asp?a=14653 flew like a sack of spuds so thats a non starter I'm afraid Ive got a series of semi-scale-ish little uns (about 20" ) coming soon which are nice quick builds, very cheap, and huge fun to fly. Just waiting for some sunshine then I can make a trek to Wales for Mr Whittaker to do the pics (lower, lower, lower ..now do it again.. but inverted ..and lower) As a long term build I'm also kit bashing a big foamy ducted fan "jet"... basically getting a cheap off the shelf kit , stripping it back and giving it a full makover from the ground up so its a complete one off . Its one I'm doing for myself so not sure if the mag wants to cover it or not. ..maybe if it turns out ok you never know Edited By Foamie Dave on 20/05/2011 21:34:36 Quote Link to comment Share on other sites More sharing options...
Dave Lawson 1 Posted May 23, 2011 Share Posted May 23, 2011 Reuben Thanks that's encouraging, I hink we are getting used to "hauling off the deck" rather than seeing if it will take of on its own Dave Thanks for response, I am coming to the conclusion that it is down to balsa weights as you suggest When my pilot gets back I'll let you know Dave L Quote Link to comment Share on other sites More sharing options...
Dave Lawson 1 Posted June 4, 2011 Share Posted June 4, 2011 Well it finally flew !!! Required a lot of up elevator to keep it level though so I suspect I need to increase the angle of attack of the wing ??? If so the clever design makes this a doddle !!! If that doesn't work then I'll build another and look to lighten it as much as possible, maybe a built up tail and rear fuselage, rather than sheet. Thanks for your help Dave Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted June 4, 2011 Share Posted June 4, 2011 Nice one Dave Just tweak it a little at a time for starters. Try a few trimming circuits, preferably with a buddy at the side taking notes as you go..its much easier than trying to remember and concentrate on flying at the same time..ask me how I know Also check if it climbs or dives more as you increase the throttle. If it noticably dives (or tucks under) when you hit the throttle, you might have too much downthrust. Hold the model from the side and look at the motor angle, wing incedence and tailplane . Idealy the wing should be set parralel to the h-stab (or just a degree or two positive incedence - ie higher at the L/E) and the motor pointing very slightly down . The motor downthrust should be just visible at arms length..if its noticably pointing down from more than a few away it may be too much down. If the incedence and motor thrust lines are both slightly off you can end up with a pitching "see saw" effect as they flight each other...you'll soon pick it up as you start fine tuning Actually trimming it like this hands on is a great learning tool..you'll be a wiz before you know it. Once again many thanks for the update ...makes doing em all the more worthwhile Quote Link to comment Share on other sites More sharing options...
brian fearnley Posted June 4, 2011 Share Posted June 4, 2011 Just seen all the comments re my fathers luton minor design! The original f/f design he actually designed and built whilst my mother was in hospital having me! I am now 58! When we redesigned the r/c version Ron Moulton photographed myself and Dad in front of the fullsize one at old warden for the cover of the December 1969 Aeromodeller mag. It was powered by first a Mills 1.3 then an OS 15 which as it says in the article turned it into a parasol Kwik Fli (for those who remember Phil Krafts aerobatic design!) It was equipped with Kraft Kp7 servos metal cased which each one weighed as much as a full set of r/c now! it was also covered in nylon,and doped.Not a lightweight. It would be great to hear from anyone who as made an electric version. I have just returned to the hobby after 25 years I think Dad will be turning in his grave to see me flying Foamies and ready to fly helis! Brian Quote Link to comment Share on other sites More sharing options...
Dave Lawson 1 Posted July 5, 2011 Share Posted July 5, 2011 FD Thought I let you know that tweaking the wing incidence plus a stiffer wooden prop has transformed this litltle charmer, it now flies well! Thanks for all your help and the design,whats next? Regards Dave Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted July 5, 2011 Share Posted July 5, 2011 Nice one Dave . Its amazing how just the smallest of tweaks can make all the difference. Glad you got it going misterGot a few more on the drawing board (both foam and balsa) ..all pretty small but lots of fun! After that I'm tweaking a kit to see if we can improve on the oringinal ..something a bit bigger ..and faster this time Quote Link to comment Share on other sites More sharing options...
Donald Brown 1 Posted August 11, 2011 Share Posted August 11, 2011 Last try to post here Quote Link to comment Share on other sites More sharing options...
Donald Brown 1 Posted August 11, 2011 Share Posted August 11, 2011 At long last I seem to be able to post Foamy Dave I am in the middle of the Lupton build and would like to ask where the hinges are inserted for the ailerons. Is there a bit of mechanical differential? Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted August 11, 2011 Share Posted August 11, 2011 Hey Donald,I added a bit of differential at the servos by mounting their arms slightly to the front, that way there is more up than down travel.I also mixed some rudder to the aileron channel which makes turning smoother.-Reuben Quote Link to comment Share on other sites More sharing options...
Reuben Kinghorn Posted August 11, 2011 Share Posted August 11, 2011 Double post..... Damn ipad2 Edited By Reuben Kinghorn on 11/08/2011 11:31:42 Quote Link to comment Share on other sites More sharing options...
Donald Brown 1 Posted August 11, 2011 Share Posted August 11, 2011 Thanks for the quick reply Reuben My question is more, how does one get the hinges in as the ailerons taper to a sharpish point at the top? Edited By Donald Brown 1 on 11/08/2011 12:38:57 Quote Link to comment Share on other sites More sharing options...
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