Danny Fenton Posted October 22, 2014 Share Posted October 22, 2014 Posted by Charles Galloway on 22/10/2014 12:22:41: I remember many years ago Brian Woods flying his BrianTaylor 190 at our club field. It's a small model by today's standards but flew really well. I have the plan and think the retracts don't look too bad to get right. Maybe Danny could lead us in a build of that one. He likes his BT models. After this one Charles, I thought we might tackle Brian Taylors 81" Mosquito or 83" Spitfire, you game? Cheers Danny Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 22, 2014 Author Share Posted October 22, 2014 Posted by Danny Fenton on 22/10/2014 13:30:15: Posted by Charles Galloway on 22/10/2014 12:22:41: I remember many years ago Brian Woods flying his BrianTaylor 190 at our club field. It's a small model by today's standards but flew really well. I have the plan and think the retracts don't look too bad to get right. Maybe Danny could lead us in a build of that one. He likes his BT models. After this one Charles, I thought we might tackle Brian Taylors 81" Mosquito or 83" Spitfire, you game? Cheers Danny Do's he not do a big FW 190 ?...the man wants to get his finger out John Edited By john stones 1 on 22/10/2014 15:50:56 Quote Link to comment Share on other sites More sharing options...
Charles Galloway Posted October 22, 2014 Share Posted October 22, 2014 Love to do a Mossie, but I'm not sure that my skills are up to doing it justice. I have the fus and tail plans, but seem to have lost the wing plan! Quote Link to comment Share on other sites More sharing options...
Martyn K Posted October 22, 2014 Share Posted October 22, 2014 +1 for a Mossie Quote Link to comment Share on other sites More sharing options...
Nigel Day Posted October 22, 2014 Share Posted October 22, 2014 Ooh, ooh, me sir! I plan to do both at some stage but it would be the Spit first for me please. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 22, 2014 Author Share Posted October 22, 2014 Posted by Nigel Day on 22/10/2014 17:03:18: Ooh, ooh, me sir! I plan to do both at some stage but it would be the Spit first for me please. Well you'd best get a move on with this one then, or they'll start without you John Quote Link to comment Share on other sites More sharing options...
Nigel Day Posted October 22, 2014 Share Posted October 22, 2014 This is quick for me John. I've nearly completed the tail section. Pics to follow shortly. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 No building done this week so far, but I've been paying attention Flap servo...now using two 12.5g-2kg torque mg ones, ailerons i'll stay with one. Will fit the left bellcrank in opposing bay to right one, as in picture, if I fit servo's opposite way to each other I can use Y lead. If I can't balance them will use a separate channel. B3 i'm thinking 1/8 ply with hard 1/8 balsa laminate ? easier to work and seems sufficient John Quote Link to comment Share on other sites More sharing options...
Nev Posted October 23, 2014 Share Posted October 23, 2014 I may be being daft but for the flap servos wouldn’t you have to put one upside down for then to work in opposition, not just flip it over. I was thinking of this myself but only have one channel I can use for flaps so would need a Y lead. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 These are for the flaps Nev, they both work together up n down John Quote Link to comment Share on other sites More sharing options...
Eamonn Fahey Posted October 23, 2014 Share Posted October 23, 2014 Nev is right John - check your sketch. For your system to work you will need mix. Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted October 23, 2014 Share Posted October 23, 2014 I think Nev is correct John..... 12g servos on flaps is a little optimistic John Cheers Danny Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 23, 2014 Share Posted October 23, 2014 It's only an instinct thing John, but 12g servos seem very small for flaps to me. I know they are specified at 2kg but they just seem very small. I see flaps as surfaces that have to hang out in the wind for a while, slowing the model down, as opposed to ailerons say, which only have to alter the amount of lift of each wing. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 Nev one of the servo's would have to be upside down for that to work ( I coupled em up to a rx) Never had owt with flaps Danny so unsure Nev use a Y lead with reverse on John Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 225's on side very tight, would have to cut lugs off, upright is easy the arm will move off line but we won't need a lot of travel ? John Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 23, 2014 Share Posted October 23, 2014 Why are you wanting to use two servos John? And, are you going to use a reversing Y lead? Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 No Chris I would mix them, and I am just thinking out loud. If there is room for this I may use one servo..one ball link above the bell crank , other below. Ignore the holes on servo its only a demo John P.s if you have a better way i'm all ears Edited By john stones 1 on 23/10/2014 19:29:58 Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted October 23, 2014 Share Posted October 23, 2014 John, my concern is that while it;s pinned down using 1/8" ply as a doubler is ,... getting the ply to curve around without distorting the fuz shape, at the moment there is not a lot of strength on the formers, perhaps 1/16 ply and 1/16 balsa, may be better As for servos , I feel 9 gms ones will be too small to do the job, mini ones 24gms is what i will use, particular on the ailerons Quote Link to comment Share on other sites More sharing options...
iqon Posted October 23, 2014 Share Posted October 23, 2014 you could use the ball crank in the opposite direction.. Quote Link to comment Share on other sites More sharing options...
Chris Bott - Moderator Posted October 23, 2014 Share Posted October 23, 2014 That would work well I think, as long as you can achieve similar angles with the pushrods as they leave the arm. The plan shows the belcrank one bay further out on the second wing. This is so it can be the same way around as the one in the first wing (rather than a mirror image). Should work fine. Another possibility would be good old fashioned aileron torque rods, running in a tube in the ribs. Then have a short pushrod to the flap horn. I've not really worked out if there's space for that or not. BTW I'm very likely to put two servos out in the wings for ailerons. I have a couple of Corona slim wing servos just arrived that look like they might work very well. Quote Link to comment Share on other sites More sharing options...
Nev Posted October 23, 2014 Share Posted October 23, 2014 Its ok for you, you have mixing, I'm still trying to work out how to di it. Quote Link to comment Share on other sites More sharing options...
Nev Posted October 23, 2014 Share Posted October 23, 2014 I thought 2 x 2 kg serves would be a good way to go. for flaps but I've never built anything this size. I have half a dozen 19g, 3 kg servoes. I'm thinking 1 for each flap, if I can mount them centrally, 1 each rudder and elevator and 1 working both ailerons through the bell cranks. I am assuming gentle turns not high speed flick roles. But I'm a long way off fitting them. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 Posted by A.A. Barry on 23/10/2014 20:01:39: John, my concern is that while it;s pinned down using 1/8" ply as a doubler is ,... getting the ply to curve around without distorting the fuz shape, at the moment there is not a lot of strength on the formers, perhaps 1/16 ply and 1/16 balsa, may be better As for servos , I feel 9 gms ones will be too small to do the job, mini ones 24gms is what i will use, particular on the ailerons It is o.k with balsa Barry, mine feels strong enough and then the wing fairing will add some strength as well. John Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted October 23, 2014 Author Share Posted October 23, 2014 Posted by iqon on 23/10/2014 20:10:14: you could use the ball crank in the opposite direction.. Hello Iqon Get your board out n get something built Quote Link to comment Share on other sites More sharing options...
A.A. Barry Posted October 24, 2014 Share Posted October 24, 2014 Ummmm, dunno John,I feel that with my TT75 FS up ft, there will be a bit more strength required, 2 st's yea would be fine but...I think I'll stick with ply/balsa laminate, there will be not much more added weight, will feel happier Barry Edited By A.A. Barry on 24/10/2014 00:36:30 Quote Link to comment Share on other sites More sharing options...
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