CONTROL LINE RACING Em ETT7U r Are having trouble Scale Race tanks Are need better shutoff design months column Tank Venting times have heard someone refer front feed tank setup refers fuel pickup point tank Racing tanks have become standard Lets talk about typical Scale Race tank its plumbing 2/2-3 ounce cylindrical tank has become standard Starting 21/2 ounce cylindrical tank trim fast-fill pipe length rubber fast-fill tank came assembled unsolder front tank Cut angle front tank seen Fig 3 using filler pipe guide go past will need reconfigure filling location would simpler build tank scratch using guide will able reinstall front cap would like acute angle will have trouble getting end cap fit may need fabricate new end cap well After angle established reinstall front plate solder place angle placed front tank effort help air roll off front tank Locate vertical horizontal centerlines tank pictured Fig 1 Locate pickup line pressure line located keep mind pickup should centerline satisfied location use punch make hole front cap tank Use punch instead drill because get Fig #1 Pressure Front Pck-up better jointyou have created lip tubing soldered instead just thickness material would have drilled holes pickup line should extended approximately /2 inch tank noted Fig 2 fail extend pickup enough may encounter difficulties takeoff can simply slight sag power complete flameout extension assures pickup will covered fuel times Now tank plumbed ready install extreme care should taken angle mounting Again front-feed system fuel actually moves forward outboard during flight accomplish Fte #2 Side View Note ck up continues Approx 1/2 Fig #4 Fusedage top 1ew IIjIIIIIIIuI Tank mounted fuse Note front exlends oulboarti rear allowing front pickup tank must mounted back tank inboard front tank seen Fig 4 Fuel will move farthest-outboard position during flight Since pickup front want fuel Note Fig 4 tank actually sitting pocket fuselage check efficiency system always check total number laps get tank volume fuel remains system information can invaluable need stretch pit window Shutoffs faulty shutoff will cause problems just much other piece equipment have received letters comments during past couple years people wanting know build shutoffs purchase Whether youre building shutoff buying remember reliability functionality size versus location adaptability needs have seen styles some good others seemed doomed failure start Two types shutoffs have seen years service wins Larry Dziaks 144 Model Aviation ry shutoff Stew Willoughbys Little Quickie Scale Racer Gillott Rossi Mk Ill Fig #3 Top 0 Side view two shutoff designs Willoughby Rotary left Dziak Wizard shutoff right Wizard Style Stewart Willoughbys Rotary Shutoff photo shows opposed styles Wizard Style mounts side airplane Rotary mounts through fuselage cheek cowl have used both styles have found both very reliable Wizard Style made K&S brass stock /i6 music wire hobby shop items difficult thing shutoff bending music wire spring-type end easily accomplished aid bending jig make bending jig simply take piece steel aluminum tool shops will give piece scrap bin drill /16 hole drill hole post wrap wire around post /I6 dowel pin drill blank form shutoff wire make 900 bend insert A6 hole Wrap wire around /I6 post three times Remove using Dremel cutoff wheel cut end 900 bend located bend first coil over gives loop utilize attachment point rest shutoff straightforward can adjusted fit particular application Keep mind top bottom shutoff should mount top bottom engine bearers pinching fuel accomplished pulled its step slams brass shutoff like other works best has small amount pre-load mechanism closed position assures positive shutoff time Rotary shutoff smaller lighter Some machining required build version Plans published NCLRA newsletter may printed NCLRA Web site http/membersaolcom/dmcd 1 43/indexhtm Stewart Willoughby has using shutoff years started using three four years ago couple reasons one-finger operation reset shutoff feature can save valuable time during pit stop shutoff s working components actually go through fuselage Delrin button end shutoff protrudes cheek cowl provides some additional aerodynamic cleanliness reset shutoff simply push Delrin button shutoff automatically opens spring tension gives positive lock run position Other reasons use shutoff weight mounting relationship aerodynamic cleanliness good tank shutoff could unstoppable using heavy walled thick almost-need-a-pair-of-pliers-topinch fuel tubing Surgical tubing works best application Its easy pinch works around tight areas make change use appropriate equipment application keys success beat yourself Eliminate obvious make other guy beat Shutoffs like other piece equipment require preventive maintenance should checked make sure component working Are mounting bolts tight spring action need adjustment Simply bolting shutoff place forgetting asking malfunction improper moment ie during final race have seen guy shows up field nine out ten times shutoff will malfunction break before day over let take proactive approach equipment maintenance Rudimentary sketches Wizard Style complete Rotary shutoffs available address top column Engines have recently received Irvine 15 Rand Norvel 15 evaluation Now weather cooperating will give report peiformance engines watch information Thanks Paul Landels Just Engines Ed Stevens Norvel making engines available NCLRA National Control Line Racing Association Are member Send name address AMA number Jerry Meyer 8 5 Grace St N Aurora IL 60542 Dues $10 US $12 outside As always comments questions photos solicited appreciated //wwwmodelaircraft August1998 145
Edition: Model Aviation - 1998/08
Page Numbers: 144, 145
CONTROL LINE RACING Em ETT7U r Are having trouble Scale Race tanks Are need better shutoff design months column Tank Venting times have heard someone refer front feed tank setup refers fuel pickup point tank Racing tanks have become standard Lets talk about typical Scale Race tank its plumbing 2/2-3 ounce cylindrical tank has become standard Starting 21/2 ounce cylindrical tank trim fast-fill pipe length rubber fast-fill tank came assembled unsolder front tank Cut angle front tank seen Fig 3 using filler pipe guide go past will need reconfigure filling location would simpler build tank scratch using guide will able reinstall front cap would like acute angle will have trouble getting end cap fit may need fabricate new end cap well After angle established reinstall front plate solder place angle placed front tank effort help air roll off front tank Locate vertical horizontal centerlines tank pictured Fig 1 Locate pickup line pressure line located keep mind pickup should centerline satisfied location use punch make hole front cap tank Use punch instead drill because get Fig #1 Pressure Front Pck-up better jointyou have created lip tubing soldered instead just thickness material would have drilled holes pickup line should extended approximately /2 inch tank noted Fig 2 fail extend pickup enough may encounter difficulties takeoff can simply slight sag power complete flameout extension assures pickup will covered fuel times Now tank plumbed ready install extreme care should taken angle mounting Again front-feed system fuel actually moves forward outboard during flight accomplish Fte #2 Side View Note ck up continues Approx 1/2 Fig #4 Fusedage top 1ew IIjIIIIIIIuI Tank mounted fuse Note front exlends oulboarti rear allowing front pickup tank must mounted back tank inboard front tank seen Fig 4 Fuel will move farthest-outboard position during flight Since pickup front want fuel Note Fig 4 tank actually sitting pocket fuselage check efficiency system always check total number laps get tank volume fuel remains system information can invaluable need stretch pit window Shutoffs faulty shutoff will cause problems just much other piece equipment have received letters comments during past couple years people wanting know build shutoffs purchase Whether youre building shutoff buying remember reliability functionality size versus location adaptability needs have seen styles some good others seemed doomed failure start Two types shutoffs have seen years service wins Larry Dziaks 144 Model Aviation ry shutoff Stew Willoughbys Little Quickie Scale Racer Gillott Rossi Mk Ill Fig #3 Top 0 Side view two shutoff designs Willoughby Rotary left Dziak Wizard shutoff right Wizard Style Stewart Willoughbys Rotary Shutoff photo shows opposed styles Wizard Style mounts side airplane Rotary mounts through fuselage cheek cowl have used both styles have found both very reliable Wizard Style made K&S brass stock /i6 music wire hobby shop items difficult thing shutoff bending music wire spring-type end easily accomplished aid bending jig make bending jig simply take piece steel aluminum tool shops will give piece scrap bin drill /16 hole drill hole post wrap wire around post /I6 dowel pin drill blank form shutoff wire make 900 bend insert A6 hole Wrap wire around /I6 post three times Remove using Dremel cutoff wheel cut end 900 bend located bend first coil over gives loop utilize attachment point rest shutoff straightforward can adjusted fit particular application Keep mind top bottom shutoff should mount top bottom engine bearers pinching fuel accomplished pulled its step slams brass shutoff like other works best has small amount pre-load mechanism closed position assures positive shutoff time Rotary shutoff smaller lighter Some machining required build version Plans published NCLRA newsletter may printed NCLRA Web site http/membersaolcom/dmcd 1 43/indexhtm Stewart Willoughby has using shutoff years started using three four years ago couple reasons one-finger operation reset shutoff feature can save valuable time during pit stop shutoff s working components actually go through fuselage Delrin button end shutoff protrudes cheek cowl provides some additional aerodynamic cleanliness reset shutoff simply push Delrin button shutoff automatically opens spring tension gives positive lock run position Other reasons use shutoff weight mounting relationship aerodynamic cleanliness good tank shutoff could unstoppable using heavy walled thick almost-need-a-pair-of-pliers-topinch fuel tubing Surgical tubing works best application Its easy pinch works around tight areas make change use appropriate equipment application keys success beat yourself Eliminate obvious make other guy beat Shutoffs like other piece equipment require preventive maintenance should checked make sure component working Are mounting bolts tight spring action need adjustment Simply bolting shutoff place forgetting asking malfunction improper moment ie during final race have seen guy shows up field nine out ten times shutoff will malfunction break before day over let take proactive approach equipment maintenance Rudimentary sketches Wizard Style complete Rotary shutoffs available address top column Engines have recently received Irvine 15 Rand Norvel 15 evaluation Now weather cooperating will give report peiformance engines watch information Thanks Paul Landels Just Engines Ed Stevens Norvel making engines available NCLRA National Control Line Racing Association Are member Send name address AMA number Jerry Meyer 8 5 Grace St N Aurora IL 60542 Dues $10 US $12 outside As always comments questions photos solicited appreciated //wwwmodelaircraft August1998 145