Tim Hooper Posted April 17, 2012 Author Share Posted April 17, 2012 Scenes of thermoplastic mayhem in the workshop this evening as the first splodges of blue Solarfilm find their new home on the ST's wing..... Edited By Tim Hooper on 17/04/2012 22:25:12 Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted April 28, 2012 Author Share Posted April 28, 2012 It's done! Let's have a look at a few details first though..... The twin ESC's live on top of the wing. I had to cut out a portion of nacelle, screw in the UC and then replace the balsa. The aileron servos are secured to the inside of their hatches with double-sided tape, abetted with a cable tie. Once again, Tim Calvert at ModelMarkings has done a magnificent job with the graphics! The 3S 2700 pack sits on a sloping tray in the nose. The tail servos are mounted in the tail. Funny, that. tim Edited By Tim Hooper on 28/04/2012 20:45:08 Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted April 28, 2012 Author Share Posted April 28, 2012 So before we see the completed model, here're a few specs; Span - 45" AUW - 49oz Power - 370 watts Wing loading - 20 oz ft Power loading - 119 watts/lb Looks sort of promising, yes? Edited By Tim Hooper on 28/04/2012 20:45:59 Edited By Steve Hargreaves - Moderator on 29/04/2012 17:23:47 Quote Link to comment Share on other sites More sharing options...
simon burch Posted April 28, 2012 Share Posted April 28, 2012 Absolutely superb. How long do we have to wait to get hold of the plan ?? Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted April 28, 2012 Share Posted April 28, 2012 As ever Tim - just superb. Let's hope you get some weather for a maiden very soon Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted April 28, 2012 Share Posted April 28, 2012 Wow Tim that looks brilliant, and still reckon its going to shift like the proverbial Cheers Danny Quote Link to comment Share on other sites More sharing options...
Tim C Posted April 29, 2012 Share Posted April 29, 2012 A stunning masterpiece! Hope it flies as well as it looks. Tim Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted April 29, 2012 Share Posted April 29, 2012 Tim just a thought, may I suggest you try contra rotating props? Assuming you can get a puller and a pusher the right size (I think 7x5's are available) then contra rotating removes all torque effect making a twin track beautifully even if you open the taps quite roughly Rotating "in at the top" seems to be the way to go, then if one motor does fail, the torque effect from the other is in opposition to other effects, which helps. Waiting with bated breath to see how she goes.. bet it won't be today! Cheers Chris Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted April 29, 2012 Share Posted April 29, 2012 Fantastic job Tim.....really looking forward to hearing how she goes....I've always fancied a twin & this could well be the one!!! Quote Link to comment Share on other sites More sharing options...
Roger Bird Posted April 29, 2012 Share Posted April 29, 2012 Congratulations Tim, one of your very best I think. What are the chances of seeing it as a free plan? Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted April 29, 2012 Author Share Posted April 29, 2012 Thanks guys! It's great to read such a favourable reaction! Chris, I did consider counter-rotating props as you suggest. However as I'm hoping that this model will be published I'm pre-guessing that most potential builders will use readily available hardware (ie., normally-formatted props), so I want to prove it flies in that configuration first. I won't be a big deal to remove the packing washers from behind the motor lugs to get rid of the side thrust if I do decide to alter the rotation of one of the motors later on. Roger, if it flies successfully, then I'll submit it for consideration by the editorial staff. tim Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted May 2, 2012 Author Share Posted May 2, 2012 Well....... It flies!!!!! .....and as forecast by young Mister Fenton, it's certainly no slouch either. The rain stopped long enough for us to head to the field. Range checked OK. I handed Netty the long Sigma lens and asked her to do her best in the dull and drear conditions - and so she did! Here's the take off, followed by the climbout out. It was immediately apparent that the model was pitching up sharply as the power was increased, so for the duration of this flght I wound in a lump of down trim. Having established that the ST was airworthy it seemed a shame not to give it the beans a bit, so we looped, we rolled (very sharp on the ailerons BTW), we flew inverted, did a couple of Cuban 8's, then throttled back to test the slow speed handling. No probs. A couple of slow circuits followed by a gentle landing. Excellent! Back home I've added a couple of degrees downthrust to the motors, so we'll see what happens next time. All in though, it bodes very well! tim Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted May 2, 2012 Share Posted May 2, 2012 That just looks brilliant Tim, great job by you and Netty. Now look after it, we have funflys coming up Quote Link to comment Share on other sites More sharing options...
IDD15 Posted May 2, 2012 Share Posted May 2, 2012 Nice work Mr Hooper looks like another good un! Forecast is improving so hopefully more flight testing later in the week?!!! Cheers Ian Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted May 2, 2012 Share Posted May 2, 2012 Way to go you two, what a result I think it was young Linds that suggested the rat and the drain pipe anology. Looking forward to seeing it tear the sky to shreds at Greenacres How is the Elf coming......... Quote Link to comment Share on other sites More sharing options...
Lindsay Todd Posted May 3, 2012 Share Posted May 3, 2012 'young Linds' Danny your my new best mate! Nice one Tim, looking forward to seeing it Greenacres Quote Link to comment Share on other sites More sharing options...
Cyclicscooby Posted May 3, 2012 Share Posted May 3, 2012 You make an own design 'scibbled on tracing paper' plane, look like an expensive ARTF..!! Nice model, nice build.. Congrats Tim... Luv Chrisie.. xx Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted May 3, 2012 Author Share Posted May 3, 2012 Thank you all! I'm off to deepest Norfolk this weekend (look out Pegasus Models......), but hope to be able to get some more pics of the ST on Monday. All depends on the weather, doesn't it? tim Quote Link to comment Share on other sites More sharing options...
unleaded Posted May 4, 2012 Share Posted May 4, 2012 Well Tim you have done it again what a bute twin and just when i was looking for a twin to put two OS 202st that were my late fathers and never been run having just cleared the work bench of the "Cleen Sweep" and winter approaching fast this could be my next project I will now read this build blog and see what i am up for LOL Ray from DOWN UNDER Quote Link to comment Share on other sites More sharing options...
unleaded Posted May 6, 2012 Share Posted May 6, 2012 Tim who need clear canopys the silver or blacked out look is great also save on a pilot HA HA ray Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted May 6, 2012 Author Share Posted May 6, 2012 Hi Ray, Glad you like it!! Is that two OS20's that you're considering? Waaay too much power..... tim Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted May 22, 2012 Author Share Posted May 22, 2012 Well this evening was perfect, so many thanks to Bob Kemp for some superb photography! tim Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted May 22, 2012 Share Posted May 22, 2012 They are great shots Tim. Why couldn't we have that light on Sunday? This is the best I got, and that was during an afternoon! Edited By Chris Bott - Moderator on 22/05/2012 22:00:21 Quote Link to comment Share on other sites More sharing options...
Roger Bird Posted June 1, 2012 Share Posted June 1, 2012 It's going to be a free plan then, great! It will definately be on my build list. Quote Link to comment Share on other sites More sharing options...
Tim Hooper Posted June 1, 2012 Author Share Posted June 1, 2012 Posted by Roger Bird on 01/06/2012 11:35:05: It's going to be a free plan then, great! It will definately be on my build list. That's what I like to hear! Will you be able to take a few pics as yu go along? tim Quote Link to comment Share on other sites More sharing options...
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