fly boy3

Hi all,normally used to foam wings, can anyone tell me the best practice method of installing ail.servo in centre of buit up wing. Could I fit ply plate between forward and aft hardwood spars,or make up a servo sized box with h/w pillars in each corner to take the screws.  Thanking yuo FB3

Thanks for all the help given re-spare david plane blades, as stated Brian SMC had them in stock. fb3by

hi, can any one tell me where I can source spare blades for David plane Thanks fb3

Thanks Ken,I think I will invest in a few new Rx batts in the spring, and follow your advice about removing same when kept in these conditions.  Also in future I will position my batts. so that they can be removed fro the model.Should have done it earlier, as I keep my Tx,s in the house.  Thanks FB3

Hi all, hope this is in the right thread,(possibly not) but will this very cold weather affect the mylar hinges and the like on control surfaces.  It is -2C in my shed at the moment.  thanks Fly Boy3.

1 Mode1 2 West Wales 3 West Wales 4 Instructor - Fly Boy3

Hi all, as the strip of balsa I need to bend has a another peice of thinner  balsa pva glued to it, should I not use steam or hot water.  Fly boy3

Hi all, not quite off topicI hope, but years ago I was told and promtly forgot, that Araldite will last longer if kept in the fridge?  Do you think this is correct, in the hope of getting permission from the wife.  Thanks Fly Boy3

Hi all,I am currently using the sandwich method of cutting balsa ribs -(1st time). Is there an accurate way of removing the spar slot balsa after cutting the verticals, while they are still bolted together.  There are 4 slots per rib.  Thanks Fly Boy 3

I think it could be called "ACE"  -  Fly Boy3 cheers

Hi all,thanks a lot to all you guys out there who helped in my elevator problem.  A lot of interesting advice that I can act on. This was no wind up Mr Penfold,but an attempt to gain some knowledge that I know is out there.  In my club safety takes priority, and it starts with the integrity of the airframe.Thanks again flyboy3.

Hi all,where my elevator joiner fits to one side of elevator on my acro wot,the fit into the wood has enlarged due to wear and is very sloppy.  This results in one half of elevator hanging about 5 mm lower than the other .Not good! any tips to help, as I don't fancy removing the whole thing to get at it, but I may have to .  Cheers flyboy3

Hi all, what difference would I find if I changed my 11/6 prop on my SC52 4s/t to a 12/6 prop.  As I am not altering the pitch,would I have more thrust with the same speed.Thanks flyboy3 -ps, prop range in the manual gives 11/7to12/5

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Hi Craig the advice you have been given is correct, it is better to land under power than dead stick, but I think you might be coming in to fast as there may be no wind on that attempt. If that is the case you will use up a lot of space,  try different throttle positions in different wind conditions. flyboy3Edited By fly boy3 on 18/10/2009 19:09:00

Hi all, if the wind is 90 degrees to the runway,would it be feasible to try a x wind landing or not fly at all. Take off into the wind is possible, but due to other restrictsions, low hedge,fence etc landing in only one direction is possible. A light  wind and an 8llbs of model may have a chance.but you have to come in fast. Thanks flyboy3

Hi all, thanks for all the info generated on this leading edge theme,It seems there are very many differant ways of doing this job.  I am now spoiled for choice,and I am far more knowledgable than when I started.flyboy3

Hi Terry, thanks for the info regarding thrust angle,but should it need right thrust with down thrust.  The engine choice on the plan was a 40 2st, but I only had a new OS46 2s/t at hand.and the change of engine position was only cosmetic. Also I read on another forum that thrust angles will be reversed when model inverted.  I am wondering if thrust angles apply to all type of models or only aerobatic pattern ships etc. Thanks again flyboy3

Hi Garry,as I am only moving it upwards a few mm and not changeing any angles,it should be ok.  I'll try it.  the fact that it seems you have not been shot down in flames,could mean most are in agreement with you.  Thanks fly boy3

Hi hc,That looks like good solution to the problem, but I have already started on the wing, but as its a bi-plane I might give it a go on the top wing. Also I am using hard balsa from Slec.with thanks also to Allan Jordon. I would like to thank all who have joined in the thread,and hope to send some pics.of completed model.  fly boy3

Hi all, due to the fact that I am thinking about useing a bigger engine on this this build,I would like to move the engine about 4to5 mm above the thrust line on the drawing. There is no cowl etc (front is open like a trainer). Would this move  give any problems to flight performance.  Thanks flyboy3

Hi Stephen,  your mate shoud practice landing circuits for a whole session.  Correct height, correct speed (for  the wind) and centre of the strip) every time.  As you say there is plenty of help around for him.  Coming in too high will only increase his speed  as he points the nose down towards the strip. Also it may be a good idea to take the model up high and show him how slow the model can fly. happy landings -flyboy3 Edited By fly boy3 on 05/10/2009 20:49:53 Edited By fly boy3 on 05/10/2009 20:51:28

Hi all, thanks for the very usefull info on leading edge.  I think that lamination,used with aliphatic( for its sanding properties) is the way to go.  The drawing is of the type where a lot of info is left to the builder to provide ,hence my problems.  Before I start a build ,I like to have all the problems as such sorted.  Just one more query, the wings require 3mm by 7mm spars,should these be a hard wood or should I ask supplier for hard balsa. Thanks again flyboy3

Hi Ken, the model is from an old RCME plan.It is called Josefin (Josephine) designed by a man called Bo Gardstat.  Top wing is 54inches,bottom wing is 40 inches,with ailerons only on lower wing,and a 46/2stroke up front.I believe it is a sport airobatic model.. It looks a basic type build with the u/c and lower wing secured by rubber bands.  It also has the rear u/c wire strut held on with the same bands as the lower wing,quite unusual. For Andy ,I ll take your advice and do as you suggest .  Thanks flyboy3   PS. there is also a design for floats on the plan.Edited By fly boy3 on 02/10/2009 21:32:24

Hi all,I am building a bi plane that requires a leading edge of 25mm by 15mm.I cannot source these exact measurmentc in any mail order firm. Do I use a 25mm/25mm block,and reduce to size and if so, is it done before glueing to rib front,or after glueing.  Also has the final section of leading edge have to follow the profile 100%. The model is a sports type.  Thanks flyboy3