Ron Gray Posted February 13 Author Share Posted February 13 (edited) Battery tray designed and built Edited February 13 by Ron Gray 3 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 15 Author Share Posted February 15 I had to replace the motor on mine, the Overlander that was in the model was faulty so I had to get another one. Tested it yesterday and at WOT with an APC 12x8 it's pulling 60a and producing just over 800W which should be more than enough! A word of caution though if you have the alloy spinners, test them for balance, mine was quite a bit out, turning the front section through 180º helped but it still needed a bit of balance weight. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 15 Author Share Posted February 15 If anyone wants balance boxes and battery trays let me know, I've already cut some for Murat! PM me if you are interested. Quote Link to comment Share on other sites More sharing options...
DaveB1 Posted February 16 Share Posted February 16 On 15/02/2024 at 09:36, Ron Gray said: I had to replace the motor on mine, the Overlander that was in the model was faulty so I had to get another one. Tested it yesterday and at WOT with an APC 12x8 it's pulling 60a and producing just over 800W which should be more than enough! A word of caution though if you have the alloy spinners, test them for balance, mine was quite a bit out, turning the front section through 180º helped but it still needed a bit of balance weight. Hi Ron, Just thinking about what you said here...How did you rig up a check of the spinner for balance ? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 16 Author Share Posted February 16 Using my Dubro prop balancer. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 17 Author Share Posted February 17 The video is currently being uploaded to YouTube. TBH it's not the best video due to the fact that I had the GoPro angled too high and that it was a really horrible sky for photos. The video is actually the second flight as I hadn't go the camera switched on for the maiden! From the launch I didn't need to input any trim changes at all, it just flew straight and level out of the launcher's hand but I felt that it was a bit nose heavy. So for the second flight which the video shows I had removed 1/3rd of the nose weight which made it slightly more sensitive but the 45º inverted climb showed it to still be nose heavy, however the onlookers all agreed that it didn't look as good as it did in the maiden flight. So I will be putting a bit more lead back in the ballast box. The stall is non existent and it was 'planted' throughout its flights showing a good (non scale) turn of speed with WOT, flight times were circa 8 minutes which left just over 30% in the 3700mAh 4s packs. It does take a bit of time to slow down on landing so lower approaches are the order of the day but it comes in nice and flat. Hand launching was easy and there was no torque roll or nose dipping. It's a winner! 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 17 Author Share Posted February 17 The final Chapter 30 9 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 17 Author Share Posted February 17 39 minutes ago, Ron Gray said: slow down on landing so lower approaches Sorry, I meant longer not lower! Quote Link to comment Share on other sites More sharing options...
mightypeesh Posted February 18 Share Posted February 18 Congratulations Ron!! 1 Quote Link to comment Share on other sites More sharing options...
Gordon McConnell Posted February 18 Share Posted February 18 Ron, Great to see a very successful first flight of your Warbirds FW190. It looks super and it seemed very fast in the flybys and even on landing! I am sure all of us following your build videos are very grateful for the massive effort you put into making these informative videos. Personally, I learned a lot. Thank you for taking the lead and spending so much time of your time on behalf of others. Good luck! 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 18 Author Share Posted February 18 Many thanks for your kind words Gordon, I’ve said this before but getting these sort of responses make it all worthwhile especially when things have been learnt from them! There will be more build Vlogs as I have quite few to do! Regarding the FW’s speed, for the vast majority of the flights it was flown a bit faster than ‘scale’ so that I could get used to it and it was also flown way faster than scale when I was doing some full throttle fly pasts as that always brings a grin! The landings weren’t too bad as long as the approach is a long one which gives the model time to slow down, the next flights should be better as I’ve now settled on the amount of noseweight required and I now know how it flies. I will be filming it again to makeup for the poor quality of the last one! 1 Quote Link to comment Share on other sites More sharing options...
Flyer Posted February 18 Share Posted February 18 Nice set of videos Ron, thanks for doing them. And well done on the maiden. Cheers Ade Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 18 Author Share Posted February 18 Thanks Ade, mucho appreciated. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 24 Author Share Posted February 24 After the fog lifted it turned into a lovely day and allowed me to have several flights with the FW, dolly needs some work though! 5 Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted February 25 Share Posted February 25 Hi Ron, As we fiy from grass which is not cut till March, sometimes later if there has been a lot of rain. I made my dolly with 2, 4" wheels at the front and one 2" at the rear to reduce friction, each wheel is independent so no axles to drag in the grass. Up to now it is close on 60 launches with the FW190 and Corsair and no fails , I hope I haven't jinxed it as I'm off flying as soon as the mist clears. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 25 Author Share Posted February 25 (edited) 6” front, 5” rear all independent axles on mine Eric. For that last vid I had freed and oiled the axles so they were all free running, I think the dolly is too heavy! So I can make a new, lighter dolly or add some power to this one 😲 The other thing I had thought about doing was change the prop from the 12 x 8 to a 12 x 6, the x 8 gives it plenty of thrust (2x its weight) but the lower pitch should accelerate quicker? Edited February 25 by Ron Gray Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted February 26 Share Posted February 26 I think if we've learnt anything about dolly launching , its that the closer you can get to it just being "a normal " aeroplane the better . What I mean is , Erics dolly adds very little above a fixed undercarriage set up .The commercial one seem too big , too high and too heavy . Basically a wooden crucifix with a pair of old bent wire legs and some wheels of 3" or above will probably do the job . 2 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted February 26 Share Posted February 26 Completely agree Richard, From what I've seen the most successful dollies are the simplest and raise the model no higher than a normal fixed undercarriage would do. Once you start putting the model onto a mobile scaffolding set up you seem to run into all sorts of trouble. The exception which I have seen work are some tall dollies for launching very large electric gliders, which are high wingers and they do seem to benefit from a higher sitting position. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 26 Author Share Posted February 26 My dolly was originally built to launch delta wings both EDF and pusher but mainly the latter as I have some potential bacon slicers powered by 6s and there is no way anyone, including me, will go anywhere near them for launching. Hence why I said that I think the problem is one of weight. A new one has been designed! 1 Quote Link to comment Share on other sites More sharing options...
Glenn Philbrick Posted February 26 Share Posted February 26 These are a couple of dolly that I've tried, both have worked to a certain degree. The one running in a 4" gutter is good if the grass is longer it wet. The other is a better bet and is steerable as it has a rx linked to the model and programmed to the rudder. Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted February 26 Share Posted February 26 I like the gutter idea Glenn , What did you make the wheels from ? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 27 Author Share Posted February 27 Now, here’s a thought,the gutter type with a bungee attached to the front of the trolley. I’ve got some spare squareline gutter……………………. Quote Link to comment Share on other sites More sharing options...
Glenn Philbrick Posted February 27 Share Posted February 27 They were 3d printed to make sure they had enough of a flat to run on the gutter 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 27 Author Share Posted February 27 1 minute ago, Glenn Philbrick said: They were 3d printed to make sure they had enough of a flat to run on the gutter No problem for Richard as he makes train kits! 🚂 1 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted February 27 Share Posted February 27 Well the FW190 certainly seems to fly like she's on rails.... Quote Link to comment Share on other sites More sharing options...
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