JohnEP Posted November 27, 2022 Share Posted November 27, 2022 Wiring loam made and ready to install in wings, ballast tube fitted with Fuz cables just a bit of fiddling to do. overlander 2600mAh LI-ION battery and Jeti receiver ready, sadly I had to adjust tail servo position to off centre so push rods run straight. Silly me should have done this with the tail servos at the start 2 Link to comment Share on other sites More sharing options...
knewt Posted November 27, 2022 Share Posted November 27, 2022 On 11/11/2022 at 10:03, JohnEP said: Back end connected tails fitted with slots cut in Fuz to take elevator horns These horns on the Skorpion were just brilliant, I’ve no idea why they haven’t become the standard. 2 Link to comment Share on other sites More sharing options...
wookman Posted November 28, 2022 Share Posted November 28, 2022 Identical to the Extreme. Don't you just live a top horned elevator. 1 Link to comment Share on other sites More sharing options...
JohnEP Posted December 1, 2022 Share Posted December 1, 2022 Well nearly Finished fuz ballast sorted and tail servos reinstalled now set off to the side, a quick check on movement and was not happy with the links on the outside hole on the servo arm holes so have moved them in one. This is to make sure there is no rubbing on the canopy cover, double check this after full Fuz install to make sure. also a quick check on assembly of the plane and all the servos, all worked which is good for me as I normally mess up somewhere on the wiring loom First time I’ve had these King Max servo working together. They feel supper strong and quick plus centring is spot on. so tomorrow will be a good clean up removing tape sticky stuff, then wing servo covers to fit then time for set up on movements and CG find out total wights with and with out ballast, I did a check on lateral balance and this seamed good. hopefully ready for this weekend for test flying 2 Link to comment Share on other sites More sharing options...
JohnEP Posted December 3, 2022 Share Posted December 3, 2022 Setting up time cg100mm to start with, may need to go forward a bit. basic setting for the test flights will be ail 17 up 10 down at the root with a 40% mix to flaps elv 5 up and down at the root with a bit more on the rate switch rudd 8 both ways crow flaps 40 down at root ali 3 up at tip Elv 2 down what could go wrong Endded up a bit off a fiddle with getting the nose weight in, but after a bit of thinking I chopped up some lead in to little bits and with epoxy filled the first 25mm of the nose with this. Still need more weight but I’ve made this adjustable if needed 2 Link to comment Share on other sites More sharing options...
wookman Posted December 3, 2022 Share Posted December 3, 2022 Looking forward to seeing how well this one goes under your guidance! Link to comment Share on other sites More sharing options...
JohnEP Posted December 3, 2022 Share Posted December 3, 2022 Well the test fly went well no real issues, a couple of adjustments to the crow will check settings later plane feels easy to fly very responsive on aileron, servos are supper quick which is very notable in the roll. Not sure the CG is right but only had an hour to play today, hope to get a bit more time tomorrow if weather is good 2 Link to comment Share on other sites More sharing options...
wookman Posted December 3, 2022 Share Posted December 3, 2022 Looking forward to seeing it on course. Link to comment Share on other sites More sharing options...
Ian F3F Posted December 4, 2022 Author Share Posted December 4, 2022 19 hours ago, wookman said: Looking forward to seeing it on course. Me too! Had my Saker flying on William's automatic course at whitesheet on Saturday. A fun few hours racing against William's pitbull 2 in some variable conditions delivering 39-58 second runs. Ian Link to comment Share on other sites More sharing options...
knewt Posted December 4, 2022 Share Posted December 4, 2022 Sounds good! How reliable was the automatic course? Link to comment Share on other sites More sharing options...
Ian F3F Posted December 5, 2022 Author Share Posted December 5, 2022 The course was 95% accurate, certainly good enough for a club comp. It was noticeable that my white winged Saker was not picked up quite as well as the orange PB2. There is a technique to a bit of a wing waggle to show more of a cross section coming on to course and physiologically its something else to blame if you cut. I couldn't help but be impressed with this home made set up. F3F's equivalent of a net with a bowling machine. You have to take your hat off to William for his work. Ian 4 Link to comment Share on other sites More sharing options...
William Posted December 5, 2022 Share Posted December 5, 2022 It's not actually my work, it's a very clever man who does the software for the picamtracker. I just assembled the bits and made a timing box for the centre. There are quite a few of them about in the UK. On good days (mainly a day where the sun is not shining into the camera) it works really well and with as few as 2 people you can have a great competition but it's not good enough for any form of official comp. 7 Link to comment Share on other sites More sharing options...
Mikeb52 Posted December 5, 2022 Share Posted December 5, 2022 You still need to be a canny lad to put it all together, and make it work. Thank you William for all your hard work, getting it up and running. It’s wireless too. 4 Link to comment Share on other sites More sharing options...
JohnEP Posted December 8, 2022 Share Posted December 8, 2022 Well I’ve reset some settings ail movement at tip is 8 up 4.5 down flap mix 7up 2 down at root, still not right but ok crow I reduce flap to 35 down and increased elv to 5 down, ail stayed the same at 3 up. I think a bit more down flap when I finally decide on CG will be good, as I think this will be more forward than 100. I tried different cg’s 100 is fine and make the plane very sporty, moving forward to 95 was better for F3F and 90 better for EM style turns (as best I can do) so next flights I will go with 90 and see how I get on. not so happy with elevator settings as yet, these need a bit of playing with so have set rates on a slider for better adjustable in flight rather than fixed amounts. Had a play with expo on this and felt no great advantage so far. Rudder was good and I’ve added a little bit off rubber mix with ailerons for F3F, will get some settings on this after the next session. over all the plane preformed very well, easy to place in F3F turns to what ever style I tried. It was very well behaved and no signs of flicking when bullying hard in a turn, more elevator may induce this but I don’t think it needs more for me. These servos are really quick so this helps with responding in roll, I did over control at time in F3F turns but that is my bad habits. I’ve really been in pressed with these King Max servos, they feel really accurate and solid. JP 3 Link to comment Share on other sites More sharing options...
Ian F3F Posted December 9, 2022 Author Share Posted December 9, 2022 Hi John the range of CG setting that work are a good example of the difficulties in recommended settings, I've been flying mine between 94-97mm CG. Looking forward to seeing it fly Ian Link to comment Share on other sites More sharing options...
JohnEP Posted January 15, 2023 Share Posted January 15, 2023 Well I finally managed a bit of time on hill today, 14ms at the start 18ms for the last flight. Modal was 4kg at the end and handled it very nicely, still need a few setting changed but run out of time sadly. The plane likes weight I feel, I could have added more today but the tube was full. I am in the process of making a steel joiner, this will solve this problem hopefully. current cg at 4kg is 92mm and feels about right, no hint of turn issues and I did try to over elevate. I’m still struggling with aileron set up but I’m thinking this may be solved with some expo, I’m using 20% expo on elevator at the moment and a no snap flap on the first 30% of elevator stick movement. This is more for across the slope when you need no flap with elevator. I have a small amount of rudder mix with the ailerons about 2/3mm at this time but have this mix on a slider so can increase but so far have just added in with the thumb, crow is good with the present settings so will not play with that. so far no big issues with the flight performance just need to get the plane on a F3F course soon. JP 2 Link to comment Share on other sites More sharing options...
Ian F3F Posted January 15, 2023 Author Share Posted January 15, 2023 Good to hear my delayed snapflap setting works for you too. I had mine flying at 4kg in the storms yesterday. Felt very comfortable considering the conditions. I'll measure my Cg, I have my ballast set to move forwards with the wood stopper replaced with lead. I'm not sure slope dog was that pleased at the conditions Now for a race 1 Link to comment Share on other sites More sharing options...
John Fish Posted April 14, 2023 Share Posted April 14, 2023 Hi Ian What is the Wing and Tail area of the Saker? Link to comment Share on other sites More sharing options...
Ian F3F Posted April 14, 2023 Author Share Posted April 14, 2023 Hi John the wing comes out at just under 55dm^2 don't have the the tail/ projected area on me. Ian Link to comment Share on other sites More sharing options...
John Fish Posted April 14, 2023 Share Posted April 14, 2023 Thanks Ian I have space for up to 10 Brass ballast cylinders 35mm long x 19mm diameter weighing 85g in the Saker Fuselage ballast tube. I was trying to work out how much ballast to put in at different wind speeds and attach a pdf. Any comments appreciated. Saker Ballast at Wind Speeds.pdf Link to comment Share on other sites More sharing options...
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