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Wowings Booby

CONSTRUCTION MANUAL

Copyright 2005 Wowings

www.wowings.com

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Summary of Contents for Booby

Page 1: ... 1 Wowings Booby CONSTRUCTION MANUAL Copyright 2005 Wowings www wowings com ...

Page 2: ...ling edge pieces and one for elevator 3 x steel pushrods with clevises attached 1 x piece of coreflute marked with outlines for two fins 1 x black fiberglass internal spar joiner 2 x packs of Dubro nylon control horns total of 4 control horns 2 x packs of Dubro E Z connectors total of 4 connectors This construction manual To complete the kit you will require the following tools and supplies Sharp ...

Page 3: ...sult your local rules for specific requirements 1 Locate the two lengths of black fiberglass spar and the internal spar joiner Use 5 minute epoxy glue to attach the two spar halves together over the internal joiner creating a full length straight spar 2 Remove the foam wing cores from their beds Gently bend open the spar slot and carefully remove the foam noodle from the spar channel Trial fit the...

Page 4: ...t they will fit nicely round off the top and bottom edges of both ends of each balsa trailing edge piece to make covering easier later on 10 Use 5 minute epoxy or hot melt glue to glue one of the balsa trailing edge pieces to the foam Hold in place with masking tape if needed and use a straight edge ruler held against the rear section of the bottom of the wing and the bottom of the balsa trailing ...

Page 5: ...combat competition rules you may need to position your battery pack and or nose weight further back than instructed Please consult your local rules for specific requirements Doing this will increase the all up weight of the finished model a little due to the extra nose weight required to balance correctly 22 Gather together all the radio equipment you plan to install into the glider and test that ...

Page 6: ...e of your standard size aileron servos on top of the wing slightly outboard towards the wing tip of the battery pack recess so that there s 10mm 3 8 of foam between it and the edge of the battery pack recess and so that one of its corners or servo mounting lugs is touching the line you marked 30mm 1 3 16 back from the leading edge The servo needs to be aligned so that the servo arm movement is at ...

Page 7: ...ery pack elevator servo and one of the aileron servos without the need for extension leads The other aileron servo will usually require a 300mm 12 extension lead 38 Trace around the receiver with a pen and then cut out along this outline all the way down through the foam Remove this foam plug and mark its front side with a vertical line for later reference 39 Decide whether you want to mount your ...

Page 8: ...oby s weight higher wing loading will improve it s penetration in very windy conditions over 30 knots resulting in increased speed Given that the Booby already has quite a high wing loading when un ballasted and is a fast low drag design we do not believe that provision for ballast is necessary so simply mention it here as an option without going into installation details If two ballast boxes or t...

Page 9: ...r as simple as having access to the battery pack s plug perhaps just having it plug into an exposed socket of your receiver If installing an exposed switch orientate it so that the on position is towards the rear of the glider so that if it brushes up against something while flying it doesn t switch off 49 Coil up the excess length in the leads and insert into the recess you made next to the recei...

Page 10: ...ill required when using an iron on covering 57 Thoroughly remove all dust from the glider and your work area 58 Use masking tape to mask off any exposed radio equipment that you don t want to get sprayed with glue 59 Go outside and spray the entire bottom surface of the wing with 3M Super 77 multi purpose spray adhesive and then place it upside down on a cardboard box or anything else to keep it u...

Page 11: ...1 2 long strips to be applied shortly 71 The balsa ailerons are orientated so that their narrower end is at the wing tip Position one of the ailerons so that there is a 2mm 3 32 gap between its end and the end of the fixed balsa trailing edge and lay it upside down on top of the wing so that its leading edge is in line with the foam sub trailing edge Use the 65mm 2 1 2 long 25mm 1 wide strips of f...

Page 12: ...the trailing edge of the wing elevator and ailerons Leave about 3mm 1 8 back from the trailing edges so that the tape is sealed to each other sticky side to sticky side 83 Lay strips of the coloured covering tape along the leading edge of each wing panel so that half of the width is on the top surface and half on the bottom surface Split and overlap the tape at the panel joins and split and wrap a...

Page 13: ...91 Turn on your receiver and transmitter so that the servo arms are centered While holding the pushrod in place move the elevator the E Z connector should be free to slide up and down the pushrod so that it forms a straight line continuation of the bottom surface of the airfoil Incidentally if you glued the fixed trailing edge pieces accurately it should also line up with these While in this posit...

Page 14: ...ft and right aileron s neutral trim position for straight level flight 103 Now it s time for the fore aft balance The Booby has been designed to balance at 140mm 5 1 2 back from the tip of each nose Carefully measure this distance back from each nose and clearly mark it with a pen on the bottom surface of the wing 104 Measure it again it needs to be exactly one hundred and forty millimeters five a...

Page 15: ...le movement and the glider will become unresponsive and also not very fun to fly The correct amount of elevon and elevator movement for the Booby is determined by its balance point a more forward balance point requires more control movement the pilot s skill level beginners should have less control movement and desired flight characteristics less control surface movement offers more precise contro...

Page 16: ...nch effectively by yourself at first but becomes much easier with practice If there s plenty of lift and you can launch from the edge of the slope the simplest and easiest method is a side arm launch holding onto one of the Booby s noses or a wingtip with one hand and gently throwing it into the lift like a discus If more power is needed the method that works best for me is to grab onto the leadin...

Page 17: ... prior to its first flight trim it out for you and be there to offer suggestions to overcome any difficulties you are having flying it Most people are usually more than happy to help if you ask them nicely PLEASE KEEP IN TOUCH If you have any questions about the construction process or the flying behaviour of the Booby please don t hesitate to contact Wowings by e mail to sales wowings com Similar...

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