mE Girl Need special size strip hobby shop closed cant find exact grade wood Cheer up takes minutes make up handy tool U A Lidberg SEARCHING FOR good strip wood hobby shops can very frustrat ing experience Smaller strips deal ers stock bin suffer quite lot han dling often broken What can quick ly turn off model project looking through stock half dozen sizes strip wood finding three sizes out stock comes warped strips look like long skinny props remaining sizes either broken suitable models boat anchors Perhaps Im being overly hard hobby shops course shops keep good track stock try hard satisfy customers needs point Im trying make lack ready-made strip wood need discourage modeler Cutting own strip wood has some real advantages Being able examine whole sheet balsa means easier select proper grain weight strips needed Worm holes cross-grain cracks lengthwise splits small hard spots knots can easily seen avoided Theres money saving pect cutting own strips approaches cutting strip wood possible include use razor blade X-acto straightedge X acto stripper couple commercial strip pers costing $10 $20 easily made stripper shown article few strips wood needed straightedge knife razor blade idea works fairly well However unless some kind jig used locate straightedge strip may differ slightly width Also its easy maintain 900 angle hand-held knife strips tend shaped like trapezoids parallelograms instead desired square rectangular cross sections 36- 48-long metal straightedge available cutting strips long very difficult because problems locat ing straightedge holding se curely balsa X-acto stripper fairly convenient suffers some difficulties noted knife straight edge cutting Some commercial strippers often made use poster board may work well have disad vantage high cost Easy Balsa Stripper shown drawing photos can made needed few minutes Just few scraps medium hard balsa en sure size stability broken pieces dou ble- single-edge razor blade some 5-mm epoxy needed sure use two pliers break razor blades Grip blade side broken twist snap blade Singleedge blades sold scraping suit able because break cleanly hold edge indefinitely Stainless-steel blades seem bend near break dont cut very well Continued page 96 EASY BALSA STRIPPER Al Lidbrg 1/8 /4 BROKEN PECE OF SINGLE EDGE RAZOR BLADE U 1/2 THICKNESS OF STOCK~ TO BE STRIPPED ALL SHEET BALSA I\ ASSEMBLE WITH 5 MIN EPOXY %WIDTH OF REQUIRED STRIPS 56 Model Aviation Just press wood firmly bench end slide stripper along presto strip since strippers easy make suggested have required size shell spar will butt against spar use toothpicks align hold spar same stabilizer Use glass cloth around spar added strength several layers glass cloth paint tails of airplanes because weight build up possibility warping tail surface sealed epoxy glue rubbed wood unpainted wood surfaces Fuel Tank suction fuel system very simple should provide very constant engine runs tank itself can easily made 010 tin can ordered John Newton Speed Racing Products completely assembled ready bolt airplane Takeoff Dolly Any three-wheel dolly front wheel spread close wing span should prove satisfactory lift-out type two guide pins extending two three inches above wingone mid-wing other close fuse lage Some weight might needed close outboard wheel just depends dolly design Engines Fuel Props use essentially stock Rossi Rear Rotor 15s Except bar stock head engine stock use bar-stock head save price Rossi inserts Rossi insert faster can keep element whole run stock Rossi stock 6-7 Rev-Up prop 65% nitro can very consistently put 162-mph bracket nitro Rossi pipe short will go 170 mph range achievable consistently standard fuel mix used usually 65-75% nitro 20% oils rest alco hol have always used least 5%-10% castor oil fuel other oil content being synthetic oil Rev-Up 6-7 prop seems about right 65-75% nitro fuel weather conditions dont stop Experiment Flying The airplane very smooth flying should present no real problems takeoff run hold some down elevator until flying speed approached ease neutral airplane should lift off easily Dont let airplane climb too high Keep about 5 feet have questions problems feel free contact us John Newton 2154 Los Padres Rowland Heights CA 91748 Jim Wade 1853 Yettford Rd Vista CA 92083 Stripper/Lidberg continued page 56 As example handy strip per can recently built unlimited rubber model long geodetically braced fuselage Cross braces 1/16 X 3/16 local hobby shop out size bought sheet 1/16 X 2 Using stripper made up 3/16 width 1/16 depth able cut 10 pieces 3/l6 wide piece about /8 wide left over strip square edges uniform width con struction sanding finished fuse lage simplified Looking again yield piece sheet balsa shows considerable savings can made 2 sheet cost 5l yielded 10 strips would have cost ll $110 Thats bad just few minutes work addition able finish model making extra trip search strip wood An Easy Balsa Stripper can made just size 15 20 minutes can make half dozen commonly used sizes Mark width stripper ready reference prevent throwing strippers out scrap color markers colored paint strip pers can used two ways Either way works better sheet balsa has good straight edge sure check first knife/straightedge routine maybe just sanding block can used produce straigbt-edged sheet method prefer cutting strips shown photos sheet held down left hand stripper used right hand Keep slight amount pressure toward sheet keep strips consistent width may prefer holding stripper left hand blade pointing up pushing sheet through right hand Rubbing surfaces stripper slide sheet balsa lightly small dry bar soap will speed up process small sharpening stone can used touch up blade new stripper can quickly made blade chipped too dull dont need strip balsa right now remember Easy Balsa Stripper next time need some Friday Saturday night after hobby shop closes hope youll find handy M uffler/Weber con tinued page 41 through muffler has pressure tap main body graph can seen expansion chamber supplies pressure flow-through other comparison between 10-6 9-6 Semco shows pressure given rpm 10-6 full throt tIe pressure slightly higher 9-6 testing muffler pressure manometer fuel level should higher open side U indicates muffler pressure exceeding atmospheric pressure fuel level higher muffler side U muffler has suc tion instead positive pressure solve problem try different location pressure tap get different muffler just forget about using muffler pressure muffler behaves well will show positive pressure rpm increasing higher rpm found examples graph same simple manometer setup can also used check other pressures such crankcase pressure fuel pump pres sure FF Duration/Meuser continued page 54 awards must somehow represent signifi cant contribution sport perhaps evidenced outstanding contest record under exceptional circumstan ces awards have presented models intended competition awards have made things other specific models name few Pennyplane event Rossi 15 Normale engine Peanut-Scale concept Seelig timer Old-Timer movement Both domestic foreign candidates eligible Supply much information can Xeroxes articles lists contest wins National records whatever cant supply send name designer whatever do soon Time awastin New Digest Editor Free Flight NFFS Digest known affectionately simply Digest has new editor Several fact After being editor seven months just really getting swing Keith Varnau found necessary give up job Bob Stalick Tom Hutchin son put together interim issue Lee Vicki Hines put out another Now its hands John Oldenkamp lives 654 India St San Diego CA 92101 Send him good stuff photos sketches stories articles contest results reports whatever Im sure hed appreciate receiving club newsletters too 96 Model Aviation FINE QUALITY KITS AND ACCESSORIES Qj2Ij SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND SOt FOR COMPLETE CATALOG Dept MA ,18 1 PAWNEE STREET 4iLIJAMSSAN MARCOS CALIPORNIA 9
Edition: Model Aviation - 1978/02
Page Numbers: 56, 96
mE Girl Need special size strip hobby shop closed cant find exact grade wood Cheer up takes minutes make up handy tool U A Lidberg SEARCHING FOR good strip wood hobby shops can very frustrat ing experience Smaller strips deal ers stock bin suffer quite lot han dling often broken What can quick ly turn off model project looking through stock half dozen sizes strip wood finding three sizes out stock comes warped strips look like long skinny props remaining sizes either broken suitable models boat anchors Perhaps Im being overly hard hobby shops course shops keep good track stock try hard satisfy customers needs point Im trying make lack ready-made strip wood need discourage modeler Cutting own strip wood has some real advantages Being able examine whole sheet balsa means easier select proper grain weight strips needed Worm holes cross-grain cracks lengthwise splits small hard spots knots can easily seen avoided Theres money saving pect cutting own strips approaches cutting strip wood possible include use razor blade X-acto straightedge X acto stripper couple commercial strip pers costing $10 $20 easily made stripper shown article few strips wood needed straightedge knife razor blade idea works fairly well However unless some kind jig used locate straightedge strip may differ slightly width Also its easy maintain 900 angle hand-held knife strips tend shaped like trapezoids parallelograms instead desired square rectangular cross sections 36- 48-long metal straightedge available cutting strips long very difficult because problems locat ing straightedge holding se curely balsa X-acto stripper fairly convenient suffers some difficulties noted knife straight edge cutting Some commercial strippers often made use poster board may work well have disad vantage high cost Easy Balsa Stripper shown drawing photos can made needed few minutes Just few scraps medium hard balsa en sure size stability broken pieces dou ble- single-edge razor blade some 5-mm epoxy needed sure use two pliers break razor blades Grip blade side broken twist snap blade Singleedge blades sold scraping suit able because break cleanly hold edge indefinitely Stainless-steel blades seem bend near break dont cut very well Continued page 96 EASY BALSA STRIPPER Al Lidbrg 1/8 /4 BROKEN PECE OF SINGLE EDGE RAZOR BLADE U 1/2 THICKNESS OF STOCK~ TO BE STRIPPED ALL SHEET BALSA I\ ASSEMBLE WITH 5 MIN EPOXY %WIDTH OF REQUIRED STRIPS 56 Model Aviation Just press wood firmly bench end slide stripper along presto strip since strippers easy make suggested have required size shell spar will butt against spar use toothpicks align hold spar same stabilizer Use glass cloth around spar added strength several layers glass cloth paint tails of airplanes because weight build up possibility warping tail surface sealed epoxy glue rubbed wood unpainted wood surfaces Fuel Tank suction fuel system very simple should provide very constant engine runs tank itself can easily made 010 tin can ordered John Newton Speed Racing Products completely assembled ready bolt airplane Takeoff Dolly Any three-wheel dolly front wheel spread close wing span should prove satisfactory lift-out type two guide pins extending two three inches above wingone mid-wing other close fuse lage Some weight might needed close outboard wheel just depends dolly design Engines Fuel Props use essentially stock Rossi Rear Rotor 15s Except bar stock head engine stock use bar-stock head save price Rossi inserts Rossi insert faster can keep element whole run stock Rossi stock 6-7 Rev-Up prop 65% nitro can very consistently put 162-mph bracket nitro Rossi pipe short will go 170 mph range achievable consistently standard fuel mix used usually 65-75% nitro 20% oils rest alco hol have always used least 5%-10% castor oil fuel other oil content being synthetic oil Rev-Up 6-7 prop seems about right 65-75% nitro fuel weather conditions dont stop Experiment Flying The airplane very smooth flying should present no real problems takeoff run hold some down elevator until flying speed approached ease neutral airplane should lift off easily Dont let airplane climb too high Keep about 5 feet have questions problems feel free contact us John Newton 2154 Los Padres Rowland Heights CA 91748 Jim Wade 1853 Yettford Rd Vista CA 92083 Stripper/Lidberg continued page 56 As example handy strip per can recently built unlimited rubber model long geodetically braced fuselage Cross braces 1/16 X 3/16 local hobby shop out size bought sheet 1/16 X 2 Using stripper made up 3/16 width 1/16 depth able cut 10 pieces 3/l6 wide piece about /8 wide left over strip square edges uniform width con struction sanding finished fuse lage simplified Looking again yield piece sheet balsa shows considerable savings can made 2 sheet cost 5l yielded 10 strips would have cost ll $110 Thats bad just few minutes work addition able finish model making extra trip search strip wood An Easy Balsa Stripper can made just size 15 20 minutes can make half dozen commonly used sizes Mark width stripper ready reference prevent throwing strippers out scrap color markers colored paint strip pers can used two ways Either way works better sheet balsa has good straight edge sure check first knife/straightedge routine maybe just sanding block can used produce straigbt-edged sheet method prefer cutting strips shown photos sheet held down left hand stripper used right hand Keep slight amount pressure toward sheet keep strips consistent width may prefer holding stripper left hand blade pointing up pushing sheet through right hand Rubbing surfaces stripper slide sheet balsa lightly small dry bar soap will speed up process small sharpening stone can used touch up blade new stripper can quickly made blade chipped too dull dont need strip balsa right now remember Easy Balsa Stripper next time need some Friday Saturday night after hobby shop closes hope youll find handy M uffler/Weber con tinued page 41 through muffler has pressure tap main body graph can seen expansion chamber supplies pressure flow-through other comparison between 10-6 9-6 Semco shows pressure given rpm 10-6 full throt tIe pressure slightly higher 9-6 testing muffler pressure manometer fuel level should higher open side U indicates muffler pressure exceeding atmospheric pressure fuel level higher muffler side U muffler has suc tion instead positive pressure solve problem try different location pressure tap get different muffler just forget about using muffler pressure muffler behaves well will show positive pressure rpm increasing higher rpm found examples graph same simple manometer setup can also used check other pressures such crankcase pressure fuel pump pres sure FF Duration/Meuser continued page 54 awards must somehow represent signifi cant contribution sport perhaps evidenced outstanding contest record under exceptional circumstan ces awards have presented models intended competition awards have made things other specific models name few Pennyplane event Rossi 15 Normale engine Peanut-Scale concept Seelig timer Old-Timer movement Both domestic foreign candidates eligible Supply much information can Xeroxes articles lists contest wins National records whatever cant supply send name designer whatever do soon Time awastin New Digest Editor Free Flight NFFS Digest known affectionately simply Digest has new editor Several fact After being editor seven months just really getting swing Keith Varnau found necessary give up job Bob Stalick Tom Hutchin son put together interim issue Lee Vicki Hines put out another Now its hands John Oldenkamp lives 654 India St San Diego CA 92101 Send him good stuff photos sketches stories articles contest results reports whatever Im sure hed appreciate receiving club newsletters too 96 Model Aviation FINE QUALITY KITS AND ACCESSORIES Qj2Ij SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND SOt FOR COMPLETE CATALOG Dept MA ,18 1 PAWNEE STREET 4iLIJAMSSAN MARCOS CALIPORNIA 9