DO YOU HAVE urge get outside some guys like interest some exhilarating activity related flight having first invest mint cash spend hours work table Build little jewel happily satisfy yearning same time youll creating quite competi tive flyer too model won few club contests five six gliders different designs Rain Crow definitely superior displays beautiful pull-outor might say recovery viciously hard righthanded launch followed stable left-circling glide Its glide fact stable glider Ive ever flown particularly windy weather As design cant claimed Rain Crows enhancing qualities wholly arrived approaches very scientific Mother Nature sisted quite bit possible glider lost about dusk rained night warping wing tail terribly After partially successful attempt made removing wing warps simply replacing tail glider again flown remarkable pull-out immediately became evident glide ever tightening left circle culminating spiral dive Happily deflecting small vertical tail manner would ordinarily induce right turn was re quired stabilize left-glide circle removing tiny amount weight added left wing tip may found improve launch phase prerequisite excellent flights Construction Select medium-grade balsa wing tail Nothing special just try select wood doesnt have mushy areas irregular grain tail surfaces may quickly sanded 1/20 thickness 1/16 sheet cant secure 1/20 stock Actually some so-called 1/16 stock nearer 1/20 thick wing requires hand work can reduced considerably have small wood plane shave wing down somewhere near its final contours Since wing has some twist trailing edge will raised slightly above horizontal some areas should inked edge wingblank Refer drawing correct amount will give reference line shave wings upper lower surface Note different degrees twist wing panel drawing also indicates small amount undercamber cut panel Once get wing contour shaved within 1/64 final contour take about 4-in square piece medium sandpaper grit about size table salt wrap around sanding block sand shave marks out wing surfaces highly buoyant outdoor hand launched glider will sniff out bit lift RAIN CROW use fine grit sandpaper sand wing until no sandpaper scratches remain previous sanding Finally using extra fine paper sand wing contour till no scratches whatsoever Employ same sanding procedures case tail surfaces sanding down wing tail surfaces always use sanding block two three inches wide three four long can easily held hand sheet sand paper held tightly wrapped around use sanding block cuts down high areas left shaving also tends August1975 43 author demonstrates launching methoda hard right-hand toss followed beautiful pullout stable left circling glide Glide quite stable windy conditions Tricky adjustments actually learned after prototype lost overnight rain sand uniformly spruce body profile now laid out carved shape sharp knife Next trim body cross sections down drawing shows sand stick until no scratches visible wing dihedral assured beveling root both wings good fit possible correct angle Cement pin wings together being careful get panels accurately aligned other taking correct dihedral wing tail surfaces sanded shape coat sanding sealer should applied spruce balsa surfaces Once sealer has thoroughly dried use extra fine sandpaper cut stif fened wood fuzz surfaces Finally apply two coats quite thin clear dope surfaces wish can mix about 20 percent color dope clear used last two coats wing tails now cemented spruce body finger rest spruce bottom wing next body Ambroid preference cements available desire waterproof cement doesnt get brit tle few months need use primer coat cement end-grain joined extra strength required flying glider launch usual manner right wing tip de pressed four five inches directly breeze Try overhand heave opposed side-armed type launch remove add minor deflec tions tail trailing edges finetrim adjustments dampen lips hold desired deflections few seconds Since dampness causes wood expand induces desired warp ing correct surface upper lower dampened As parting note will mention rudder replaced after tail got knocked off replaced 1/4 shorter drawing shows suspect glider airworthy cant sure Have ball Rain Crow WING SHAPED FROM 3/16..1/20 MED WT BALSA SHEET 32 HALF INCH SQUARES APPROX I/I NOTE WING TWIST YIELDS AM EXCEPTIONAL PULL-OUT AND SETS UP LEFT GLIDE CIRCLE WITH RIGHT RUDDER STABILIZING/20 MED WT BALSA SHEET GLIDE PATTERN DESIGNED S DRAWN_______ BY N HULL TRACED S INKED_______________ BY ROGER GREENE_______ CG1/6 SPRUCE SHEET 5/32 8/32________________ InchesO123456 44 Model Aviation minimum expense Rain LrOw returns maximum exhilarating flying fun wing does have different amounts twist panel various stationsand bit rudder offset Slim fuselage cut shaped spruce its tough enough scramble
Edition: Model Aviation - 1975/08
Page Numbers: 43, 44
Edition: Model Aviation - 1975/08
Page Numbers: 43, 44
DO YOU HAVE urge get outside some guys like interest some exhilarating activity related flight having first invest mint cash spend hours work table Build little jewel happily satisfy yearning same time youll creating quite competi tive flyer too model won few club contests five six gliders different designs Rain Crow definitely superior displays beautiful pull-outor might say recovery viciously hard righthanded launch followed stable left-circling glide Its glide fact stable glider Ive ever flown particularly windy weather As design cant claimed Rain Crows enhancing qualities wholly arrived approaches very scientific Mother Nature sisted quite bit possible glider lost about dusk rained night warping wing tail terribly After partially successful attempt made removing wing warps simply replacing tail glider again flown remarkable pull-out immediately became evident glide ever tightening left circle culminating spiral dive Happily deflecting small vertical tail manner would ordinarily induce right turn was re quired stabilize left-glide circle removing tiny amount weight added left wing tip may found improve launch phase prerequisite excellent flights Construction Select medium-grade balsa wing tail Nothing special just try select wood doesnt have mushy areas irregular grain tail surfaces may quickly sanded 1/20 thickness 1/16 sheet cant secure 1/20 stock Actually some so-called 1/16 stock nearer 1/20 thick wing requires hand work can reduced considerably have small wood plane shave wing down somewhere near its final contours Since wing has some twist trailing edge will raised slightly above horizontal some areas should inked edge wingblank Refer drawing correct amount will give reference line shave wings upper lower surface Note different degrees twist wing panel drawing also indicates small amount undercamber cut panel Once get wing contour shaved within 1/64 final contour take about 4-in square piece medium sandpaper grit about size table salt wrap around sanding block sand shave marks out wing surfaces highly buoyant outdoor hand launched glider will sniff out bit lift RAIN CROW use fine grit sandpaper sand wing until no sandpaper scratches remain previous sanding Finally using extra fine paper sand wing contour till no scratches whatsoever Employ same sanding procedures case tail surfaces sanding down wing tail surfaces always use sanding block two three inches wide three four long can easily held hand sheet sand paper held tightly wrapped around use sanding block cuts down high areas left shaving also tends August1975 43 author demonstrates launching methoda hard right-hand toss followed beautiful pullout stable left circling glide Glide quite stable windy conditions Tricky adjustments actually learned after prototype lost overnight rain sand uniformly spruce body profile now laid out carved shape sharp knife Next trim body cross sections down drawing shows sand stick until no scratches visible wing dihedral assured beveling root both wings good fit possible correct angle Cement pin wings together being careful get panels accurately aligned other taking correct dihedral wing tail surfaces sanded shape coat sanding sealer should applied spruce balsa surfaces Once sealer has thoroughly dried use extra fine sandpaper cut stif fened wood fuzz surfaces Finally apply two coats quite thin clear dope surfaces wish can mix about 20 percent color dope clear used last two coats wing tails now cemented spruce body finger rest spruce bottom wing next body Ambroid preference cements available desire waterproof cement doesnt get brit tle few months need use primer coat cement end-grain joined extra strength required flying glider launch usual manner right wing tip de pressed four five inches directly breeze Try overhand heave opposed side-armed type launch remove add minor deflec tions tail trailing edges finetrim adjustments dampen lips hold desired deflections few seconds Since dampness causes wood expand induces desired warp ing correct surface upper lower dampened As parting note will mention rudder replaced after tail got knocked off replaced 1/4 shorter drawing shows suspect glider airworthy cant sure Have ball Rain Crow WING SHAPED FROM 3/16..1/20 MED WT BALSA SHEET 32 HALF INCH SQUARES APPROX I/I NOTE WING TWIST YIELDS AM EXCEPTIONAL PULL-OUT AND SETS UP LEFT GLIDE CIRCLE WITH RIGHT RUDDER STABILIZING/20 MED WT BALSA SHEET GLIDE PATTERN DESIGNED S DRAWN_______ BY N HULL TRACED S INKED_______________ BY ROGER GREENE_______ CG1/6 SPRUCE SHEET 5/32 8/32________________ InchesO123456 44 Model Aviation minimum expense Rain LrOw returns maximum exhilarating flying fun wing does have different amounts twist panel various stationsand bit rudder offset Slim fuselage cut shaped spruce its tough enough scramble
