CONTESTS flying opportunities data below has gathered since last column area represented refer January 1989 column possible contact information area California Santa Ana Santa Ana hangar being refurbished availabil ity will limited uncertain first weekend month will sanctioned just case con tact Curt Stevens 25108 Marguerite Parkway Mission Viejo CA 92692 phone 714 240-8433 about par ticular session California San Diego Monthly sessions Cat I Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Iowa Cedar Rapids Approximately weekly flying sessions winter 34ft ceiling Contact Paul Mcllrath 1524 48th St NE Cedar Rapids IA 52402 phone 319 393-4677 Oklahoma Oklahoma City Sessions Na tional Guard Armory Oklahoma City January 22 February 19 1989 plus March date yet set Jim Belson 4933 NW 29th Okla homa City OK 73129 phone 405 946-1093 Utah Salt Lake City Sessions Brighton High School January 4 18 Febru ary 1 15 March 1 15 29 April 12 1989 Rocky Russo 1425 Ken sington Ave Salt Lake City UT 84105 HLG 25 24 L II z 21 01 5 20 19 10 III 1112 Score Multiplier 13 II 14 Remember used use gallon jugs form propeller blades Well meet new est thingusing cooking pot form gives shallower camber blade Theres column Fun models delightful things about Indoor modelers endless inventiveness Over years wide variety unusual events has developed fun flying recentand maybe successfulis Federation ROG concept Skinny Minnie May 1987 issue Model Aviation Tony Becker staged team competition models US Indoor Championships last year competition fierce better flight times expected Briefly stated Federation ROG 30-sqin model 6-in-diameter plastic prop weigh ing 31 grams minimum expect great things class since offers lot opportunity developing flight strategy adjustment skills San Diego Orbiteers have inventive groups A-6 class show ing promise club fun sessions A-6 rules 1 30-sq-in wing area maximum 2 6-in-diameter prop either unlightened plas tic commercial prop built flat 1/32 sheet 3 Motor stick 6-in long maximum 4 All spars 1/16 sq minimum ribs /32 x 35343332 2 U 31 30 4 29 C 528 2 25 IIII 101112 Score Multiplier HLG II III 1314 End view two props right formed gallon jug lefthand built cooking pot Note its lower camber /16 minimum 5 Model must covered tissue no special Indoor materials may used Matchbox models Once Match box model concept surfaces againthe model must fit kitchen matchbox Sometimes rules require assembled model fit matchbox other rules allow model stowed pieces assembled flight Thats too hard Well about class models can assembled pieces carried cigarette carton catch class model must carry US 25-cent piece internally perpendicular line flight models timed mandatory ROG takeoff sample time several years ago 90 seconds under 40-ft ceiling historical note class originated 1950 Profes sor Gene Larrabee MIT Richard Baxter Lloyd Lisher Henry Jex Walt Mooney Whatever became Postal contests Several years ago fairly common Indoor fliers area challenge fliers other areas Postal contests challenge usually specified Continued page 183 35 34 33 32 31 30 s 29 28 CI 27 28 o 25 i 24 2322 21 20 19 10 RUBBER ENDURANCE 1112 Score Multiplier 1314 folks Fudge Factors can used hold Postal contest Whats Postal contest Read Buds column find out HLG Figure 1L Hand-Launched Gliders flying under ceilings range 18-25 ft high HLG II Figure 2Center 25-35-ft ceilings Rubber Endurance Figure 3R Rubber power under ceilings 18-35-ft height range March 1989 75 Free Flight Indoor Bud Tenny Box 545 RIchardson TX 75080 Walt Van Gorders model box showing tech-John Maretts model box Two dowels niques mounting parts securelylow above support wings still allowing move some / / markets hate beg library very important ability write column have al complete collection Model Airplane News years interest us need August 1944 November December 1946 1936 earlier need Air Trails December issues 1940 41 42 plus other issues 1940 earlier wouldnt use space own wants need reference material benefit write Xerox copies good originals purposes Ill pay reasonable prices plug good stuff read Send SASE Ms NA Suhr W 218 N 5866 Mac Lynn Ct Menomonee Falls WI 53051 infor mation ordering books about old model en gines late Art Suhr copies ads reviews articles sorts model magazines Old-Timer era including Model Airplane News Air Trails Flying Aces others have have huge library old magazines before have 1989 SAM Champs has rescheduled new location new dates new dates October 9-13 1989 Monday through Friday place Jean Nevada located 25 miles south Las Vegas US Highway 15 Problems beyond control organizers prevented obtaining use flying site Reno Carson City NV new Contest Manager will Larry Jeno Phil MeCary will assistant Don kins will RC Director Jim Persson will FF Director organizers state 10-year study weather records area indicates very best time hold contest Temperature 75 O.85 0 range little wind promised Test flying field will possible Sun day Monday October 8-9 Bean Feed will Monday evening further information contact Larry Jenno 4341 Flanders Las Vegas NV 89121 phone number 702 731-4029 FF Indoor/Tenny Continued page 75 time frame events flown club would use its own site What about different ceiling heights Some times didnt matter someone NIMAS National Indoor Model Airplane Society probably Charlie Sotich came up set fudge factors helped take account different ceiling heights basic premise fudge factors average duration HandLaunched Gliders HLGs varies ratio ceiling heights Indoor Endurance model times vary square root ceiling-height ratio Hows again Suppose club 25ft site AMA measure other 32ft site guys flying 25-ft site would multiply HLG times 32/25 128 Rubber times multiplier square root 128 113 catch ceiling height adjustment HLG factors work best no greater variation ceiling height 141 Fudge factors also havent tried ceiling heights much beyond 35 ft have good results fudge factors used NI MAS Three tables below show NIMAS fudge fac SPACE SHUTITLE CAP 5995 R/C FASHIONS R/C CAPS JUC PiloO Wing O Fool Screobleo Effs Os Bill Gold Enshoid,ed COLORS RdNov0 GoldWhi, CoT Blue SHIRTS & HATS ISHIRTS SHORT SI5EYE Coeon &Polyesser BInd COLORS STYLE ws,Bloc #1055 EooIce Geeo Silo, IOP GW SWEATSHIRTS $1695 Collon & PolyeOee BInd COLORE WIsiso h Oeco LI Bloc Yellow Silo, #1044 STYLE CALL OUR 24 HOUR PHONE 303 770-6306 TO PLACE ORDERS REQUEST BROCHURE $200 Shipping & Handling ChargeCODs Add $3 00 Continental USCO Residents Add 37% Sales Tax 3 IThMS SHIPPED POSTAGE PRE-PAIDAll Monies US dollars SEND SASE FOR FREE COLOR BROCHURE HOBBY SHIRTS & HATS PO BOX 2497 LITTLETON CO 80161 VISA March 1989 183 S * LETS GO FLYING $895 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwilc SetS Minute5 oz $ 695 Kwik SetS Minute10 oz $1095 Giant Kwik SetS MinutelSoz $1495 Half FastlOMinutelOoz$ 995 GMP AIRCRAFT INSTRUMENTS 80 3/161/43/6112 $ 179 40 314 inch * 179 EASY OFF PULLER propee tool removing drive washeracand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $1 50 postage Scale RF800 Dual Stnit Nose Gear Fulls Tooling PO Box 95 Champaign IL 61820 o00350 -SF400 -00500 -RESOS 00505 Open Trade Only March 2-3 Sponsored Radio Control Hobby Trade Association RCHTA Co-Sponsored Model Railroad Industry Association MRIA * * Fun Lots Features Boat Pond Car Track * Model Railroad Demonstrations * OS Fcr free NeWSeer 235155 *In IlltrOld * I11111111111JJ111J1JJ1JJ11JJJ11JJ1111JJ1JJ11111I11JJ11lIll[v32][b227414622912713390]] tors Figures 1 2 3 present same data graphically Figure 1 dashed lines show HLG fudge factor 23 ft against 18 ft 128 Table JHLG 18 ft139 19 ft133 20 ft128 21 ftI22 22 ft116 23 ft 111 24 ftlOS 25 ftlO Table 2HLG 25 ft14 26 ft136 27ft132 28 ftl28 29 ftl24 30 ft 12 31 ftl16 32 ft112 33 ftl08 34 ft104 35 ftl0 Table 3Rubber Power 18 fti 394 19 ft 1374 20 ftI354 21 ft1333 22 ft 1312 23 ftl291 24 ft1269 25 ft 1247 26 ftl225 27 ft1202 28 ft 1178 29 ftl155 30 ft1130 31 ft 1105 32 ftl08 33 ft1054 34 ft 1027 35 ft1O So dont try Postal meets share results us via column model boxes previous box discus sion model boxes MA October 1988 Jan uary 1989 dealt box intended shipped luggage Obviously box na ture everything must anchored cant drift around damage other things box can give box tender loving care during transportation things dont have tied down well boxes dont have strong casual approach reflected two months photos Walt Van Gorders box shows tradi tional approach Motor sticks props tail semblies either plugged secured foam rubber clamps wings plug tissue sockets anchored box John Maretts box relaxed uses similar anchor points fuselage compo nents wings rest wooden dowels run ning across box removable dowel above wings keeps moving around too much wings free drift side side up down little type ap proach much easier use dont have struggle mount wing posts sockets Needless say cases box lids must fit tight enough prevent accidental removal props Several previous columns have covered several aspects gallon-jug props good detail Although pitch distribu tion actual pitch can varied amount camber blade fixed radius block blade molded way change camber use larger diameter form props discussed previous series built Jones cork block mentioned has 31-in radius Another photos shows second form used develop prop significantly less camber cooking pot 475-in radius Another photo shows result prop left made cooking pot the right prop built Jones block Whats bottom line cant say sure limited testing time lower camber prop seemed work better Johnson City So didnt win may able answer better can learn keep motor bunching rear hook responding advertisers mention read about ModelAviation 184 Model Aviation Planes Cars s ns Games & Accessories Radio Controlled ic tic & Morel Add Excitement life Get Lawnmowe~ 60 powered rolling looping kind Zimbabwe Model Products/7 / / / /1 p See dealer order direct } ZIM PRO MARKETING PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 Special Introductory Offer complete Kit foam wood parts 995
Edition: Model Aviation - 1989/03
Page Numbers: 75, 183, 184
CONTESTS flying opportunities data below has gathered since last column area represented refer January 1989 column possible contact information area California Santa Ana Santa Ana hangar being refurbished availabil ity will limited uncertain first weekend month will sanctioned just case con tact Curt Stevens 25108 Marguerite Parkway Mission Viejo CA 92692 phone 714 240-8433 about par ticular session California San Diego Monthly sessions Cat I Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Iowa Cedar Rapids Approximately weekly flying sessions winter 34ft ceiling Contact Paul Mcllrath 1524 48th St NE Cedar Rapids IA 52402 phone 319 393-4677 Oklahoma Oklahoma City Sessions Na tional Guard Armory Oklahoma City January 22 February 19 1989 plus March date yet set Jim Belson 4933 NW 29th Okla homa City OK 73129 phone 405 946-1093 Utah Salt Lake City Sessions Brighton High School January 4 18 Febru ary 1 15 March 1 15 29 April 12 1989 Rocky Russo 1425 Ken sington Ave Salt Lake City UT 84105 HLG 25 24 L II z 21 01 5 20 19 10 III 1112 Score Multiplier 13 II 14 Remember used use gallon jugs form propeller blades Well meet new est thingusing cooking pot form gives shallower camber blade Theres column Fun models delightful things about Indoor modelers endless inventiveness Over years wide variety unusual events has developed fun flying recentand maybe successfulis Federation ROG concept Skinny Minnie May 1987 issue Model Aviation Tony Becker staged team competition models US Indoor Championships last year competition fierce better flight times expected Briefly stated Federation ROG 30-sqin model 6-in-diameter plastic prop weigh ing 31 grams minimum expect great things class since offers lot opportunity developing flight strategy adjustment skills San Diego Orbiteers have inventive groups A-6 class show ing promise club fun sessions A-6 rules 1 30-sq-in wing area maximum 2 6-in-diameter prop either unlightened plas tic commercial prop built flat 1/32 sheet 3 Motor stick 6-in long maximum 4 All spars 1/16 sq minimum ribs /32 x 35343332 2 U 31 30 4 29 C 528 2 25 IIII 101112 Score Multiplier HLG II III 1314 End view two props right formed gallon jug lefthand built cooking pot Note its lower camber /16 minimum 5 Model must covered tissue no special Indoor materials may used Matchbox models Once Match box model concept surfaces againthe model must fit kitchen matchbox Sometimes rules require assembled model fit matchbox other rules allow model stowed pieces assembled flight Thats too hard Well about class models can assembled pieces carried cigarette carton catch class model must carry US 25-cent piece internally perpendicular line flight models timed mandatory ROG takeoff sample time several years ago 90 seconds under 40-ft ceiling historical note class originated 1950 Profes sor Gene Larrabee MIT Richard Baxter Lloyd Lisher Henry Jex Walt Mooney Whatever became Postal contests Several years ago fairly common Indoor fliers area challenge fliers other areas Postal contests challenge usually specified Continued page 183 35 34 33 32 31 30 s 29 28 CI 27 28 o 25 i 24 2322 21 20 19 10 RUBBER ENDURANCE 1112 Score Multiplier 1314 folks Fudge Factors can used hold Postal contest Whats Postal contest Read Buds column find out HLG Figure 1L Hand-Launched Gliders flying under ceilings range 18-25 ft high HLG II Figure 2Center 25-35-ft ceilings Rubber Endurance Figure 3R Rubber power under ceilings 18-35-ft height range March 1989 75 Free Flight Indoor Bud Tenny Box 545 RIchardson TX 75080 Walt Van Gorders model box showing tech-John Maretts model box Two dowels niques mounting parts securelylow above support wings still allowing move some / / markets hate beg library very important ability write column have al complete collection Model Airplane News years interest us need August 1944 November December 1946 1936 earlier need Air Trails December issues 1940 41 42 plus other issues 1940 earlier wouldnt use space own wants need reference material benefit write Xerox copies good originals purposes Ill pay reasonable prices plug good stuff read Send SASE Ms NA Suhr W 218 N 5866 Mac Lynn Ct Menomonee Falls WI 53051 infor mation ordering books about old model en gines late Art Suhr copies ads reviews articles sorts model magazines Old-Timer era including Model Airplane News Air Trails Flying Aces others have have huge library old magazines before have 1989 SAM Champs has rescheduled new location new dates new dates October 9-13 1989 Monday through Friday place Jean Nevada located 25 miles south Las Vegas US Highway 15 Problems beyond control organizers prevented obtaining use flying site Reno Carson City NV new Contest Manager will Larry Jeno Phil MeCary will assistant Don kins will RC Director Jim Persson will FF Director organizers state 10-year study weather records area indicates very best time hold contest Temperature 75 O.85 0 range little wind promised Test flying field will possible Sun day Monday October 8-9 Bean Feed will Monday evening further information contact Larry Jenno 4341 Flanders Las Vegas NV 89121 phone number 702 731-4029 FF Indoor/Tenny Continued page 75 time frame events flown club would use its own site What about different ceiling heights Some times didnt matter someone NIMAS National Indoor Model Airplane Society probably Charlie Sotich came up set fudge factors helped take account different ceiling heights basic premise fudge factors average duration HandLaunched Gliders HLGs varies ratio ceiling heights Indoor Endurance model times vary square root ceiling-height ratio Hows again Suppose club 25ft site AMA measure other 32ft site guys flying 25-ft site would multiply HLG times 32/25 128 Rubber times multiplier square root 128 113 catch ceiling height adjustment HLG factors work best no greater variation ceiling height 141 Fudge factors also havent tried ceiling heights much beyond 35 ft have good results fudge factors used NI MAS Three tables below show NIMAS fudge fac SPACE SHUTITLE CAP 5995 R/C FASHIONS R/C CAPS JUC PiloO Wing O Fool Screobleo Effs Os Bill Gold Enshoid,ed COLORS RdNov0 GoldWhi, CoT Blue SHIRTS & HATS ISHIRTS SHORT SI5EYE Coeon &Polyesser BInd COLORS STYLE ws,Bloc #1055 EooIce Geeo Silo, IOP GW SWEATSHIRTS $1695 Collon & PolyeOee BInd COLORE WIsiso h Oeco LI Bloc Yellow Silo, #1044 STYLE CALL OUR 24 HOUR PHONE 303 770-6306 TO PLACE ORDERS REQUEST BROCHURE $200 Shipping & Handling ChargeCODs Add $3 00 Continental USCO Residents Add 37% Sales Tax 3 IThMS SHIPPED POSTAGE PRE-PAIDAll Monies US dollars SEND SASE FOR FREE COLOR BROCHURE HOBBY SHIRTS & HATS PO BOX 2497 LITTLETON CO 80161 VISA March 1989 183 S * LETS GO FLYING $895 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwilc SetS Minute5 oz $ 695 Kwik SetS Minute10 oz $1095 Giant Kwik SetS MinutelSoz $1495 Half FastlOMinutelOoz$ 995 GMP AIRCRAFT INSTRUMENTS 80 3/161/43/6112 $ 179 40 314 inch * 179 EASY OFF PULLER propee tool removing drive washeracand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $1 50 postage Scale RF800 Dual Stnit Nose Gear Fulls Tooling PO Box 95 Champaign IL 61820 o00350 -SF400 -00500 -RESOS 00505 Open Trade Only March 2-3 Sponsored Radio Control Hobby Trade Association RCHTA Co-Sponsored Model Railroad Industry Association MRIA * * Fun Lots Features Boat Pond Car Track * Model Railroad Demonstrations * OS Fcr free NeWSeer 235155 *In IlltrOld * I11111111111JJ111J1JJ1JJ11JJJ11JJ1111JJ1JJ11111I11JJ11lIll[v32][b227414622912713390]] tors Figures 1 2 3 present same data graphically Figure 1 dashed lines show HLG fudge factor 23 ft against 18 ft 128 Table JHLG 18 ft139 19 ft133 20 ft128 21 ftI22 22 ft116 23 ft 111 24 ftlOS 25 ftlO Table 2HLG 25 ft14 26 ft136 27ft132 28 ftl28 29 ftl24 30 ft 12 31 ftl16 32 ft112 33 ftl08 34 ft104 35 ftl0 Table 3Rubber Power 18 fti 394 19 ft 1374 20 ftI354 21 ft1333 22 ft 1312 23 ftl291 24 ft1269 25 ft 1247 26 ftl225 27 ft1202 28 ft 1178 29 ftl155 30 ft1130 31 ft 1105 32 ftl08 33 ft1054 34 ft 1027 35 ft1O So dont try Postal meets share results us via column model boxes previous box discus sion model boxes MA October 1988 Jan uary 1989 dealt box intended shipped luggage Obviously box na ture everything must anchored cant drift around damage other things box can give box tender loving care during transportation things dont have tied down well boxes dont have strong casual approach reflected two months photos Walt Van Gorders box shows tradi tional approach Motor sticks props tail semblies either plugged secured foam rubber clamps wings plug tissue sockets anchored box John Maretts box relaxed uses similar anchor points fuselage compo nents wings rest wooden dowels run ning across box removable dowel above wings keeps moving around too much wings free drift side side up down little type ap proach much easier use dont have struggle mount wing posts sockets Needless say cases box lids must fit tight enough prevent accidental removal props Several previous columns have covered several aspects gallon-jug props good detail Although pitch distribu tion actual pitch can varied amount camber blade fixed radius block blade molded way change camber use larger diameter form props discussed previous series built Jones cork block mentioned has 31-in radius Another photos shows second form used develop prop significantly less camber cooking pot 475-in radius Another photo shows result prop left made cooking pot the right prop built Jones block Whats bottom line cant say sure limited testing time lower camber prop seemed work better Johnson City So didnt win may able answer better can learn keep motor bunching rear hook responding advertisers mention read about ModelAviation 184 Model Aviation Planes Cars s ns Games & Accessories Radio Controlled ic tic & Morel Add Excitement life Get Lawnmowe~ 60 powered rolling looping kind Zimbabwe Model Products/7 / / / /1 p See dealer order direct } ZIM PRO MARKETING PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 Special Introductory Offer complete Kit foam wood parts 995
Edition: Model Aviation - 1989/03
Page Numbers: 75, 183, 184
CONTESTS flying opportunities data below has gathered since last column area represented refer January 1989 column possible contact information area California Santa Ana Santa Ana hangar being refurbished availabil ity will limited uncertain first weekend month will sanctioned just case con tact Curt Stevens 25108 Marguerite Parkway Mission Viejo CA 92692 phone 714 240-8433 about par ticular session California San Diego Monthly sessions Cat I Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Iowa Cedar Rapids Approximately weekly flying sessions winter 34ft ceiling Contact Paul Mcllrath 1524 48th St NE Cedar Rapids IA 52402 phone 319 393-4677 Oklahoma Oklahoma City Sessions Na tional Guard Armory Oklahoma City January 22 February 19 1989 plus March date yet set Jim Belson 4933 NW 29th Okla homa City OK 73129 phone 405 946-1093 Utah Salt Lake City Sessions Brighton High School January 4 18 Febru ary 1 15 March 1 15 29 April 12 1989 Rocky Russo 1425 Ken sington Ave Salt Lake City UT 84105 HLG 25 24 L II z 21 01 5 20 19 10 III 1112 Score Multiplier 13 II 14 Remember used use gallon jugs form propeller blades Well meet new est thingusing cooking pot form gives shallower camber blade Theres column Fun models delightful things about Indoor modelers endless inventiveness Over years wide variety unusual events has developed fun flying recentand maybe successfulis Federation ROG concept Skinny Minnie May 1987 issue Model Aviation Tony Becker staged team competition models US Indoor Championships last year competition fierce better flight times expected Briefly stated Federation ROG 30-sqin model 6-in-diameter plastic prop weigh ing 31 grams minimum expect great things class since offers lot opportunity developing flight strategy adjustment skills San Diego Orbiteers have inventive groups A-6 class show ing promise club fun sessions A-6 rules 1 30-sq-in wing area maximum 2 6-in-diameter prop either unlightened plas tic commercial prop built flat 1/32 sheet 3 Motor stick 6-in long maximum 4 All spars 1/16 sq minimum ribs /32 x 35343332 2 U 31 30 4 29 C 528 2 25 IIII 101112 Score Multiplier HLG II III 1314 End view two props right formed gallon jug lefthand built cooking pot Note its lower camber /16 minimum 5 Model must covered tissue no special Indoor materials may used Matchbox models Once Match box model concept surfaces againthe model must fit kitchen matchbox Sometimes rules require assembled model fit matchbox other rules allow model stowed pieces assembled flight Thats too hard Well about class models can assembled pieces carried cigarette carton catch class model must carry US 25-cent piece internally perpendicular line flight models timed mandatory ROG takeoff sample time several years ago 90 seconds under 40-ft ceiling historical note class originated 1950 Profes sor Gene Larrabee MIT Richard Baxter Lloyd Lisher Henry Jex Walt Mooney Whatever became Postal contests Several years ago fairly common Indoor fliers area challenge fliers other areas Postal contests challenge usually specified Continued page 183 35 34 33 32 31 30 s 29 28 CI 27 28 o 25 i 24 2322 21 20 19 10 RUBBER ENDURANCE 1112 Score Multiplier 1314 folks Fudge Factors can used hold Postal contest Whats Postal contest Read Buds column find out HLG Figure 1L Hand-Launched Gliders flying under ceilings range 18-25 ft high HLG II Figure 2Center 25-35-ft ceilings Rubber Endurance Figure 3R Rubber power under ceilings 18-35-ft height range March 1989 75 Free Flight Indoor Bud Tenny Box 545 RIchardson TX 75080 Walt Van Gorders model box showing tech-John Maretts model box Two dowels niques mounting parts securelylow above support wings still allowing move some / / markets hate beg library very important ability write column have al complete collection Model Airplane News years interest us need August 1944 November December 1946 1936 earlier need Air Trails December issues 1940 41 42 plus other issues 1940 earlier wouldnt use space own wants need reference material benefit write Xerox copies good originals purposes Ill pay reasonable prices plug good stuff read Send SASE Ms NA Suhr W 218 N 5866 Mac Lynn Ct Menomonee Falls WI 53051 infor mation ordering books about old model en gines late Art Suhr copies ads reviews articles sorts model magazines Old-Timer era including Model Airplane News Air Trails Flying Aces others have have huge library old magazines before have 1989 SAM Champs has rescheduled new location new dates new dates October 9-13 1989 Monday through Friday place Jean Nevada located 25 miles south Las Vegas US Highway 15 Problems beyond control organizers prevented obtaining use flying site Reno Carson City NV new Contest Manager will Larry Jeno Phil MeCary will assistant Don kins will RC Director Jim Persson will FF Director organizers state 10-year study weather records area indicates very best time hold contest Temperature 75 O.85 0 range little wind promised Test flying field will possible Sun day Monday October 8-9 Bean Feed will Monday evening further information contact Larry Jenno 4341 Flanders Las Vegas NV 89121 phone number 702 731-4029 FF Indoor/Tenny Continued page 75 time frame events flown club would use its own site What about different ceiling heights Some times didnt matter someone NIMAS National Indoor Model Airplane Society probably Charlie Sotich came up set fudge factors helped take account different ceiling heights basic premise fudge factors average duration HandLaunched Gliders HLGs varies ratio ceiling heights Indoor Endurance model times vary square root ceiling-height ratio Hows again Suppose club 25ft site AMA measure other 32ft site guys flying 25-ft site would multiply HLG times 32/25 128 Rubber times multiplier square root 128 113 catch ceiling height adjustment HLG factors work best no greater variation ceiling height 141 Fudge factors also havent tried ceiling heights much beyond 35 ft have good results fudge factors used NI MAS Three tables below show NIMAS fudge fac SPACE SHUTITLE CAP 5995 R/C FASHIONS R/C CAPS JUC PiloO Wing O Fool Screobleo Effs Os Bill Gold Enshoid,ed COLORS RdNov0 GoldWhi, CoT Blue SHIRTS & HATS ISHIRTS SHORT SI5EYE Coeon &Polyesser BInd COLORS STYLE ws,Bloc #1055 EooIce Geeo Silo, IOP GW SWEATSHIRTS $1695 Collon & PolyeOee BInd COLORE WIsiso h Oeco LI Bloc Yellow Silo, #1044 STYLE CALL OUR 24 HOUR PHONE 303 770-6306 TO PLACE ORDERS REQUEST BROCHURE $200 Shipping & Handling ChargeCODs Add $3 00 Continental USCO Residents Add 37% Sales Tax 3 IThMS SHIPPED POSTAGE PRE-PAIDAll Monies US dollars SEND SASE FOR FREE COLOR BROCHURE HOBBY SHIRTS & HATS PO BOX 2497 LITTLETON CO 80161 VISA March 1989 183 S * LETS GO FLYING $895 Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwilc SetS Minute5 oz $ 695 Kwik SetS Minute10 oz $1095 Giant Kwik SetS MinutelSoz $1495 Half FastlOMinutelOoz$ 995 GMP AIRCRAFT INSTRUMENTS 80 3/161/43/6112 $ 179 40 314 inch * 179 EASY OFF PULLER propee tool removing drive washeracand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $1 50 postage Scale RF800 Dual Stnit Nose Gear Fulls Tooling PO Box 95 Champaign IL 61820 o00350 -SF400 -00500 -RESOS 00505 Open Trade Only March 2-3 Sponsored Radio Control Hobby Trade Association RCHTA Co-Sponsored Model Railroad Industry Association MRIA * * Fun Lots Features Boat Pond Car Track * Model Railroad Demonstrations * OS Fcr free NeWSeer 235155 *In IlltrOld * I11111111111JJ111J1JJ1JJ11JJJ11JJ1111JJ1JJ11111I11JJ11lIll[v32][b227414622912713390]] tors Figures 1 2 3 present same data graphically Figure 1 dashed lines show HLG fudge factor 23 ft against 18 ft 128 Table JHLG 18 ft139 19 ft133 20 ft128 21 ftI22 22 ft116 23 ft 111 24 ftlOS 25 ftlO Table 2HLG 25 ft14 26 ft136 27ft132 28 ftl28 29 ftl24 30 ft 12 31 ftl16 32 ft112 33 ftl08 34 ft104 35 ftl0 Table 3Rubber Power 18 fti 394 19 ft 1374 20 ftI354 21 ft1333 22 ft 1312 23 ftl291 24 ft1269 25 ft 1247 26 ftl225 27 ft1202 28 ft 1178 29 ftl155 30 ft1130 31 ft 1105 32 ftl08 33 ft1054 34 ft 1027 35 ft1O So dont try Postal meets share results us via column model boxes previous box discus sion model boxes MA October 1988 Jan uary 1989 dealt box intended shipped luggage Obviously box na ture everything must anchored cant drift around damage other things box can give box tender loving care during transportation things dont have tied down well boxes dont have strong casual approach reflected two months photos Walt Van Gorders box shows tradi tional approach Motor sticks props tail semblies either plugged secured foam rubber clamps wings plug tissue sockets anchored box John Maretts box relaxed uses similar anchor points fuselage compo nents wings rest wooden dowels run ning across box removable dowel above wings keeps moving around too much wings free drift side side up down little type ap proach much easier use dont have struggle mount wing posts sockets Needless say cases box lids must fit tight enough prevent accidental removal props Several previous columns have covered several aspects gallon-jug props good detail Although pitch distribu tion actual pitch can varied amount camber blade fixed radius block blade molded way change camber use larger diameter form props discussed previous series built Jones cork block mentioned has 31-in radius Another photos shows second form used develop prop significantly less camber cooking pot 475-in radius Another photo shows result prop left made cooking pot the right prop built Jones block Whats bottom line cant say sure limited testing time lower camber prop seemed work better Johnson City So didnt win may able answer better can learn keep motor bunching rear hook responding advertisers mention read about ModelAviation 184 Model Aviation Planes Cars s ns Games & Accessories Radio Controlled ic tic & Morel Add Excitement life Get Lawnmowe~ 60 powered rolling looping kind Zimbabwe Model Products/7 / / / /1 p See dealer order direct } ZIM PRO MARKETING PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-482-6188 Special Introductory Offer complete Kit foam wood parts 995