RADIO CONTROL HELICOPTERS BLADE BALANCING TECHNIQUES previous column discussed find eliminate vibration model helicopters Although possible sources vibration biggest has main rotor systemspecifically main rotor blades better way balance main rotor blades will reduce helicopters vibration helicopter will fly better Actually blade balancing theory fairly simple see Figure 1 Just three things needed 1 blades must level balancer 2 spanwise CGs must same 3 weights must same Howeverand very important two above requirements met third will automatically follow cant fool Mother Nature has developed two basic blade balancing techniques technique matches CGs blade other uses accurate scale match weights both techniques blades brought balance using something like Revolution Blade Balancer High Point Until recently accurate difficult costly time-consuming technique has match weights accurate scale has very accurate method because blade weight can determined down tenth gram unfortunately matching blade CGs specified accuracy has guaranteed least until recently brings us Mr Laurel Koll has designed Koll Rotor Pro balancer being manufactured sold Miniature Aircraft 3743 Silver Star Rd Orlando FL 32808 Mr Kolls invention first balancer perfectly match apparent spanwise CUs number rotor blades use term apparent CGs because although Koll Rotor Pro can identify exact CG point has adjustable weight blade holding arm will affect apparent CG location However worryif apparent CGs matched actual CGs very fine point bring up sake accuracy Koll Rotor Pro will also match apparent chordwise CGs again something no other balancer has able accuracy As weight added subtracted blade match spanwise CGs blades can also matched chordwise CG chordwise CG measurement also something have seriously considered before now because have no accurate way measure ability accurately match both spanwise chordwise apparent CGs makes Rotor Pro beneficial 82 Model Aviation r Pro balance cradle mounted ball bearings rigid Rotor Pro action Small dark spot left under rotor blade base Wire rod has 3mm 4mm shafts hold blades thumb screw locks blade position Precision Model Products tailboom servo mount can improve tail rotor response reduce pushrod flex vibration PNls new all-metal transmitter tray lets Craig Mallory hover new Gas X-Cell holding transmitter advancement blade balancing since High Point introduced years ago Rotor Pro can balance sizes rotor blades including 60 30-size main rotor blades well tail rotor blades Three- four-millimeter bolts provided mount blades balancer check overall balance would High Point blade balancer Plus has attachment hold props other such objects need balanced Koll Rotor Pro makes blade balancing both quick accurate Although detailed instructions come balancer basic idea make blade master match other blades CG Balancing new set weighted blades can easily accomplished first using balancer High Point Revolution Blade Balancer determine lighter blade make blade master will ensure no extra weight will needed other required fill slot provided However blades will receiving additional weight such balancing new set fiberglass blades rebalancing set blades already using use heavy blade master will ensure weight added light blade weight can positioned match spanwise chordwise CGs either case once master blade has determined weight can added other blade bring overall balance match spanwise CGs technique use lock blade holding arm position mark apparent CG master blade balance Rotor Pro place other blade Rotor Pro add weight needed obtain same spanwise CG weight can also added closer leading trailing edge correct chordwise CG use High Point Revolution Blade Balancer check overall balance adding weight true CG light blade until brought balance two negative comments have CG1 CG2 Weight 1Weight 2 blades balance Weight 1Weight 2 CG1CG2 Figure 1 about Rotor Pro 1 needs rubber feet keep slipping table however bought whole pack stick-on rubber feet Radio Shack less $1 2 balancing bubble may need calibrated mean balancer should level bubble centered easy check place long straightedge balancer use adjustable weight center bubble straightedge should now horizontal both ends equally above level table use pair pliers bend bubble holder slightly check again Koll Rotor Pro inexpensive hope increased sales will cause price reduced An alternative purchasing own would have club purchase club members would keep cost down user still provide everyone ability improve balance blades fact really became believer Koll Rotor Pro after checking set blades flying quite thought balanced Needless say off slightly both spanwise chordwise CG New Products Precision Model Products 28 Brigantine Cr formula improvements dyywSsIvtl field testing give great advantages well Better engine protection Consistent runs Cooler operating temperatures ,ethane lower price Tenor rueis Whether youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuelsl thn fueling confidence Get Byron Fuel fuel champions BYRON ORIGINALS ember 1994 83 ock Byron fuel contact us direct Grove IA 51445 364-3165 Plymouth MA 02360 making tailboom servo mount can used just about helicopter servo mount twopiece device clamps around tailboom tail rotor servo mounts clamp gets tail rotor servo out under canopy reduces length flex pushrod wire required places servo optimum position hook up pushrod adjusts easily make small trim changes tail rotor think worthwhile product remember secure servo lead frame helicopter several locations Pacific Northwest Industries 9658 Ronald Dr Blame WA 98230 producing deluxe all-metal transmitter tray long list features metal base can adjust hold transmitter padded clips secure transmitter tray adjustable hand rests side Two adjustable metal shoulder straps padded have spring tension keep securely place Although substantial appearance tray actually very light comfortable providing rock-solid foundation transmitter easy transport tray separates readily shoulder harness certainly highest quality functional transmitter tray have opportunity try should help levels fliers relieving weight transmitter hands thereby allowing precise control helicopter Foreign Hell Help received nice letter fellow modeler Poland would like whatever help may able give him modeling club interested forms RCespecially helicoptersand IBM-compatible computers Unfortunately dont have much read use way equipment So should have extra reading material old RC equipment hand know could put good use would also like write several interested modelers please write Marian Nazimek ul Norwida 17d17 46-200 Kluczbork Poland OWEN LESS FESSLEY MORE FUN Dieselize Davis Diesel Its Awesome 4 S cflr II I~FJ V DAVIS MODaL PRO Can Anybody Teach Mold Fiberglass Yes Can plug mold part comprehensive video discusses materials techniques tips making molding experience successI Its easier think $3495 plus $450 Shipping & Handling e Glast Developments Corporation 1944 Neva Dr Dayton OH 45414 00-821-3283 Fax 513-274-7267 B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field September1994 85 Up 50% Power Same Easy Starting No Glow Plugs Runs Twice Long Scale Sound PO Box 141 ord CT 06460 877-1670 coorplete otolog send so/f oddoossed 7SF stomped #10 envelope & $3 Cued/ted Istoolet CATALOGS BEST IN SCALE Best Scale5400 ASP Model Aircraft Plans Handbook$500 ASp Scale Drawing Plans Book$500 RC Model World Plans & conslruction gtoide $600 VIH Gemun Plans. $800 PLEASE AD 5200 FOR PO6TAGE Call909 885 3959 foreredit card orders FIESLER STORCH 1/6TH SCAIE PLANS $4000 PP Elite plan Dennis Bryant 96 SPAN ASK ODELIOAS BEEN BUILT PROM THE PLAN BEFORE YOU BUY Bob Holman Box 741 San Berdo CA 92402
Edition: Model Aviation - 1994/09
Page Numbers: 82, 83, 85
RADIO CONTROL HELICOPTERS BLADE BALANCING TECHNIQUES previous column discussed find eliminate vibration model helicopters Although possible sources vibration biggest has main rotor systemspecifically main rotor blades better way balance main rotor blades will reduce helicopters vibration helicopter will fly better Actually blade balancing theory fairly simple see Figure 1 Just three things needed 1 blades must level balancer 2 spanwise CGs must same 3 weights must same Howeverand very important two above requirements met third will automatically follow cant fool Mother Nature has developed two basic blade balancing techniques technique matches CGs blade other uses accurate scale match weights both techniques blades brought balance using something like Revolution Blade Balancer High Point Until recently accurate difficult costly time-consuming technique has match weights accurate scale has very accurate method because blade weight can determined down tenth gram unfortunately matching blade CGs specified accuracy has guaranteed least until recently brings us Mr Laurel Koll has designed Koll Rotor Pro balancer being manufactured sold Miniature Aircraft 3743 Silver Star Rd Orlando FL 32808 Mr Kolls invention first balancer perfectly match apparent spanwise CUs number rotor blades use term apparent CGs because although Koll Rotor Pro can identify exact CG point has adjustable weight blade holding arm will affect apparent CG location However worryif apparent CGs matched actual CGs very fine point bring up sake accuracy Koll Rotor Pro will also match apparent chordwise CGs again something no other balancer has able accuracy As weight added subtracted blade match spanwise CGs blades can also matched chordwise CG chordwise CG measurement also something have seriously considered before now because have no accurate way measure ability accurately match both spanwise chordwise apparent CGs makes Rotor Pro beneficial 82 Model Aviation r Pro balance cradle mounted ball bearings rigid Rotor Pro action Small dark spot left under rotor blade base Wire rod has 3mm 4mm shafts hold blades thumb screw locks blade position Precision Model Products tailboom servo mount can improve tail rotor response reduce pushrod flex vibration PNls new all-metal transmitter tray lets Craig Mallory hover new Gas X-Cell holding transmitter advancement blade balancing since High Point introduced years ago Rotor Pro can balance sizes rotor blades including 60 30-size main rotor blades well tail rotor blades Three- four-millimeter bolts provided mount blades balancer check overall balance would High Point blade balancer Plus has attachment hold props other such objects need balanced Koll Rotor Pro makes blade balancing both quick accurate Although detailed instructions come balancer basic idea make blade master match other blades CG Balancing new set weighted blades can easily accomplished first using balancer High Point Revolution Blade Balancer determine lighter blade make blade master will ensure no extra weight will needed other required fill slot provided However blades will receiving additional weight such balancing new set fiberglass blades rebalancing set blades already using use heavy blade master will ensure weight added light blade weight can positioned match spanwise chordwise CGs either case once master blade has determined weight can added other blade bring overall balance match spanwise CGs technique use lock blade holding arm position mark apparent CG master blade balance Rotor Pro place other blade Rotor Pro add weight needed obtain same spanwise CG weight can also added closer leading trailing edge correct chordwise CG use High Point Revolution Blade Balancer check overall balance adding weight true CG light blade until brought balance two negative comments have CG1 CG2 Weight 1Weight 2 blades balance Weight 1Weight 2 CG1CG2 Figure 1 about Rotor Pro 1 needs rubber feet keep slipping table however bought whole pack stick-on rubber feet Radio Shack less $1 2 balancing bubble may need calibrated mean balancer should level bubble centered easy check place long straightedge balancer use adjustable weight center bubble straightedge should now horizontal both ends equally above level table use pair pliers bend bubble holder slightly check again Koll Rotor Pro inexpensive hope increased sales will cause price reduced An alternative purchasing own would have club purchase club members would keep cost down user still provide everyone ability improve balance blades fact really became believer Koll Rotor Pro after checking set blades flying quite thought balanced Needless say off slightly both spanwise chordwise CG New Products Precision Model Products 28 Brigantine Cr formula improvements dyywSsIvtl field testing give great advantages well Better engine protection Consistent runs Cooler operating temperatures ,ethane lower price Tenor rueis Whether youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuelsl thn fueling confidence Get Byron Fuel fuel champions BYRON ORIGINALS ember 1994 83 ock Byron fuel contact us direct Grove IA 51445 364-3165 Plymouth MA 02360 making tailboom servo mount can used just about helicopter servo mount twopiece device clamps around tailboom tail rotor servo mounts clamp gets tail rotor servo out under canopy reduces length flex pushrod wire required places servo optimum position hook up pushrod adjusts easily make small trim changes tail rotor think worthwhile product remember secure servo lead frame helicopter several locations Pacific Northwest Industries 9658 Ronald Dr Blame WA 98230 producing deluxe all-metal transmitter tray long list features metal base can adjust hold transmitter padded clips secure transmitter tray adjustable hand rests side Two adjustable metal shoulder straps padded have spring tension keep securely place Although substantial appearance tray actually very light comfortable providing rock-solid foundation transmitter easy transport tray separates readily shoulder harness certainly highest quality functional transmitter tray have opportunity try should help levels fliers relieving weight transmitter hands thereby allowing precise control helicopter Foreign Hell Help received nice letter fellow modeler Poland would like whatever help may able give him modeling club interested forms RCespecially helicoptersand IBM-compatible computers Unfortunately dont have much read use way equipment So should have extra reading material old RC equipment hand know could put good use would also like write several interested modelers please write Marian Nazimek ul Norwida 17d17 46-200 Kluczbork Poland OWEN LESS FESSLEY MORE FUN Dieselize Davis Diesel Its Awesome 4 S cflr II I~FJ V DAVIS MODaL PRO Can Anybody Teach Mold Fiberglass Yes Can plug mold part comprehensive video discusses materials techniques tips making molding experience successI Its easier think $3495 plus $450 Shipping & Handling e Glast Developments Corporation 1944 Neva Dr Dayton OH 45414 00-821-3283 Fax 513-274-7267 B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field September1994 85 Up 50% Power Same Easy Starting No Glow Plugs Runs Twice Long Scale Sound PO Box 141 ord CT 06460 877-1670 coorplete otolog send so/f oddoossed 7SF stomped #10 envelope & $3 Cued/ted Istoolet CATALOGS BEST IN SCALE Best Scale5400 ASP Model Aircraft Plans Handbook$500 ASp Scale Drawing Plans Book$500 RC Model World Plans & conslruction gtoide $600 VIH Gemun Plans. $800 PLEASE AD 5200 FOR PO6TAGE Call909 885 3959 foreredit card orders FIESLER STORCH 1/6TH SCAIE PLANS $4000 PP Elite plan Dennis Bryant 96 SPAN ASK ODELIOAS BEEN BUILT PROM THE PLAN BEFORE YOU BUY Bob Holman Box 741 San Berdo CA 92402
Edition: Model Aviation - 1994/09
Page Numbers: 82, 83, 85
RADIO CONTROL HELICOPTERS BLADE BALANCING TECHNIQUES previous column discussed find eliminate vibration model helicopters Although possible sources vibration biggest has main rotor systemspecifically main rotor blades better way balance main rotor blades will reduce helicopters vibration helicopter will fly better Actually blade balancing theory fairly simple see Figure 1 Just three things needed 1 blades must level balancer 2 spanwise CGs must same 3 weights must same Howeverand very important two above requirements met third will automatically follow cant fool Mother Nature has developed two basic blade balancing techniques technique matches CGs blade other uses accurate scale match weights both techniques blades brought balance using something like Revolution Blade Balancer High Point Until recently accurate difficult costly time-consuming technique has match weights accurate scale has very accurate method because blade weight can determined down tenth gram unfortunately matching blade CGs specified accuracy has guaranteed least until recently brings us Mr Laurel Koll has designed Koll Rotor Pro balancer being manufactured sold Miniature Aircraft 3743 Silver Star Rd Orlando FL 32808 Mr Kolls invention first balancer perfectly match apparent spanwise CUs number rotor blades use term apparent CGs because although Koll Rotor Pro can identify exact CG point has adjustable weight blade holding arm will affect apparent CG location However worryif apparent CGs matched actual CGs very fine point bring up sake accuracy Koll Rotor Pro will also match apparent chordwise CGs again something no other balancer has able accuracy As weight added subtracted blade match spanwise CGs blades can also matched chordwise CG chordwise CG measurement also something have seriously considered before now because have no accurate way measure ability accurately match both spanwise chordwise apparent CGs makes Rotor Pro beneficial 82 Model Aviation r Pro balance cradle mounted ball bearings rigid Rotor Pro action Small dark spot left under rotor blade base Wire rod has 3mm 4mm shafts hold blades thumb screw locks blade position Precision Model Products tailboom servo mount can improve tail rotor response reduce pushrod flex vibration PNls new all-metal transmitter tray lets Craig Mallory hover new Gas X-Cell holding transmitter advancement blade balancing since High Point introduced years ago Rotor Pro can balance sizes rotor blades including 60 30-size main rotor blades well tail rotor blades Three- four-millimeter bolts provided mount blades balancer check overall balance would High Point blade balancer Plus has attachment hold props other such objects need balanced Koll Rotor Pro makes blade balancing both quick accurate Although detailed instructions come balancer basic idea make blade master match other blades CG Balancing new set weighted blades can easily accomplished first using balancer High Point Revolution Blade Balancer determine lighter blade make blade master will ensure no extra weight will needed other required fill slot provided However blades will receiving additional weight such balancing new set fiberglass blades rebalancing set blades already using use heavy blade master will ensure weight added light blade weight can positioned match spanwise chordwise CGs either case once master blade has determined weight can added other blade bring overall balance match spanwise CGs technique use lock blade holding arm position mark apparent CG master blade balance Rotor Pro place other blade Rotor Pro add weight needed obtain same spanwise CG weight can also added closer leading trailing edge correct chordwise CG use High Point Revolution Blade Balancer check overall balance adding weight true CG light blade until brought balance two negative comments have CG1 CG2 Weight 1Weight 2 blades balance Weight 1Weight 2 CG1CG2 Figure 1 about Rotor Pro 1 needs rubber feet keep slipping table however bought whole pack stick-on rubber feet Radio Shack less $1 2 balancing bubble may need calibrated mean balancer should level bubble centered easy check place long straightedge balancer use adjustable weight center bubble straightedge should now horizontal both ends equally above level table use pair pliers bend bubble holder slightly check again Koll Rotor Pro inexpensive hope increased sales will cause price reduced An alternative purchasing own would have club purchase club members would keep cost down user still provide everyone ability improve balance blades fact really became believer Koll Rotor Pro after checking set blades flying quite thought balanced Needless say off slightly both spanwise chordwise CG New Products Precision Model Products 28 Brigantine Cr formula improvements dyywSsIvtl field testing give great advantages well Better engine protection Consistent runs Cooler operating temperatures ,ethane lower price Tenor rueis Whether youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuelsl thn fueling confidence Get Byron Fuel fuel champions BYRON ORIGINALS ember 1994 83 ock Byron fuel contact us direct Grove IA 51445 364-3165 Plymouth MA 02360 making tailboom servo mount can used just about helicopter servo mount twopiece device clamps around tailboom tail rotor servo mounts clamp gets tail rotor servo out under canopy reduces length flex pushrod wire required places servo optimum position hook up pushrod adjusts easily make small trim changes tail rotor think worthwhile product remember secure servo lead frame helicopter several locations Pacific Northwest Industries 9658 Ronald Dr Blame WA 98230 producing deluxe all-metal transmitter tray long list features metal base can adjust hold transmitter padded clips secure transmitter tray adjustable hand rests side Two adjustable metal shoulder straps padded have spring tension keep securely place Although substantial appearance tray actually very light comfortable providing rock-solid foundation transmitter easy transport tray separates readily shoulder harness certainly highest quality functional transmitter tray have opportunity try should help levels fliers relieving weight transmitter hands thereby allowing precise control helicopter Foreign Hell Help received nice letter fellow modeler Poland would like whatever help may able give him modeling club interested forms RCespecially helicoptersand IBM-compatible computers Unfortunately dont have much read use way equipment So should have extra reading material old RC equipment hand know could put good use would also like write several interested modelers please write Marian Nazimek ul Norwida 17d17 46-200 Kluczbork Poland OWEN LESS FESSLEY MORE FUN Dieselize Davis Diesel Its Awesome 4 S cflr II I~FJ V DAVIS MODaL PRO Can Anybody Teach Mold Fiberglass Yes Can plug mold part comprehensive video discusses materials techniques tips making molding experience successI Its easier think $3495 plus $450 Shipping & Handling e Glast Developments Corporation 1944 Neva Dr Dayton OH 45414 00-821-3283 Fax 513-274-7267 B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field September1994 85 Up 50% Power Same Easy Starting No Glow Plugs Runs Twice Long Scale Sound PO Box 141 ord CT 06460 877-1670 coorplete otolog send so/f oddoossed 7SF stomped #10 envelope & $3 Cued/ted Istoolet CATALOGS BEST IN SCALE Best Scale5400 ASP Model Aircraft Plans Handbook$500 ASp Scale Drawing Plans Book$500 RC Model World Plans & conslruction gtoide $600 VIH Gemun Plans. $800 PLEASE AD 5200 FOR PO6TAGE Call909 885 3959 foreredit card orders FIESLER STORCH 1/6TH SCAIE PLANS $4000 PP Elite plan Dennis Bryant 96 SPAN ASK ODELIOAS BEEN BUILT PROM THE PLAN BEFORE YOU BUY Bob Holman Box 741 San Berdo CA 92402