FREE FLIGHT DURATION BACK IN THE OLDEN DAYS before carbon fiber circle tow towlines like gliders themselves used simple remember local experts would show up contest red silk-covered Jasco Nordic 72 new 10-cent ball kite string contest over string stayed behind Now technology rules wont allow thing circle towhooks used now need pull 15 20 pounds unlatch cotton kite string would break long before So would wings thats another story rules require line wound up immediately after flight Common practice use simple winch reel up line between flights After line stretched out unhooked winch Most fliers store winch during tow sticking back waistband pants rules permit small button attached end line keep slipping through fliers hand Recently 1995 free flight team member Andrew Barron showed sets up towline reel Its far cry ball kite string towline actually two different materials top two-thirds line part closest model 80-pound-test braided Spectra line Andrew uses Spiderwire Safariland 3120 E Mission Blvd Ontario CA 91761 remainder 50meter-long towline 90-pound-test nylon monofilament fishing line Editors note probably DuPont Stren available Jim Bradley Bradley Model Products 1337 Pine Sap Ct Orlando FL 32825 Using two different lines ailows Andrew take advantage best characteristics both braided Spectra monofilament Spectra line much thinner monofilament reduces line drag allows faster model speed zoom launch monofilament however nice fat making easier handle monofilament line also much less likely tangleimportant flying weeds two lines simply tied together knot covered heat-shrink tubing wont snag careful too much heat can melt line Andrew attaches small rectangular piece stiff plastic bottom end monofilament act button cuts red plastic epoxy squeegee anything about 46 thick would Next sticks smail piece adhesive-backed Velcro onto button wraps matching Velcro strip around center towline reel hook up line ail has touch button Velcro strip reel start turning crank way Israeli tow reels also available Jim Bradley Aluminum D-Box though Doug Joyce noted canard FiC models structurai ideas would translate conventional tail-last models Like FAI Power fliers Doug uses thin aluminum skin over sheet balsa form wing some recent wings has adding second layer tin aluminum spar forward top bottom add extra strength rigidity weight gain about 20 grams long-wing model Heres Doug builds wing piece aluminum cut slightly longer wing panel little double chord width taped down piece thick glass carefully cleaned Another piece aiuminum cut length piece wide distance back wing spar around leading edge spar cleaned both sides epoxied center larger piece aluminum balsa skins epoxied place spar ribs 114 Model Aviation ro used quick attachment towline reel line can reeled after flight Loaded ready lightweight reel carries 50 meters line Flag signals towhook unlatch model release US FlA team member Andrew Barron model M&K Moscow other built Andrew using M&K components added Finally rest balsaaluminum sandwich pulled folded over form top wing skin Doug says biggest problem getting second piece aluminum down air bubbles uses brayer roll out pricks bubbles pin vent information building aluminum wings see 1988 NFFS Sympo Randy Archers article Back issues Symposium available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 Mike Mike Mulligan sent some new Wakefield components handling made Igor Vivchar lives Odessa Ukraine items include DPR delayed prop release front end motor tube pylon connector tailboom Since Igor s products non standard sizes Mike selling complete sets. Actually makes lot easier trying match front end source motor tube another have epoxy nose ring connector add stab mount DT hammer supplied Add wing tail epoxy pylon get correct CG Probably interesting part Igors fuselage connector joins aramid fiber motor tube skinny carbon-and-aiuminum tailboom Most other two-piece Wakefield fuselages use slip-fit coupler rear motor peg holds two pieces together alignment Igors uses threaded ring clamps two halves together motor peg forward connector ailows easily remove tailboom get broken motor conventional connector have pull rear peg firstno easy feat wrapped remains blown motor Totai weight connector 77 grams front end also bit unusual uses simple external lever start prop after launch mounts very wide nose ring slips over outside motor tube front end itself simple lightweight 377 grams including nose ring bobbin no blades uses detachable bobbin can wind prop off launch blades feather reduce drag Mike also included Igors new front ends features simpler nonfeathering DPR Two small arms project sides hub just front blade arms motor wound torque moves arms slightly prevent blades folding back launch Most modern Wakefields have very short noses prop blades fold back under wings blades must held forward launch would hit wing started turning After motor winds down arms rotate out way allowing blades fold glide No exact word yet price availability new non-feathering front ends Mike thinks will slightly less expensive feathering units As mentioned front ends available complete sets front end tube pylon boom etc $290 plus $10 postage may seem bit high does include both timer timer-start switch already mounted item Mike does sell separately really neat three-position rudder fitting $20 allows use straight slightly left rudder position burst slight right setting cruise third setting right turn glide should simpler easier alternative using wing wiggler get straight climb burstThe fitting incredibly small light 07 grams uses no springs November1995 115 U Clever connector two-piece Vivchar Wakefield fuselage allows removal tailboom removing rear motor peg Vivchar front end has detachable bobbin winding Torque operated arms hold blades out launch Rings adjust thrust Tiny rudder stop allows three separate rudder positions worked line holds lever intermediate rudder setting line off two lines timer Weight 7 gram released rudder swings final setting NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# -I1z 6 Buffered Y harness 7354# 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Cona 7356# 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type ordering Part # followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hite RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 catches might cause problems Instead intermediate stop the cruise pivoting arm line runs other end arm up timer line released stop pivots out way rudder moves over glide setting some reason fitting comes incredibly long screws could cut down save fraction gram Mike also anticipating shipment finished wings Igor sample saw looked quite good follows current practice using molded carbon fiber D box carbon trailing edge carboncapped balsa ribs covering white polyester fabric Weight finished wing 575 grams information Igor Vivchar products call Mike Mulligan 714 633-9282 after 5 pm Pacific Standard Time Epoxy Update Gail Gewain Composite Structures Technology tells has name change epoxy resins stock Gougeon Laminating Resin now called PRO-SET epoxy addition product line being expanded CST will stocking PROSET resin hardener quarts well gallons Also available mini pump simplifies measuring CST will continue sell West Systems epoxy also made Gougeon Brothers Inc Gail also included some technical information PRO-SET post-curing epoxy Post-curing controlled heating epoxy laminate shorten overall cure time improve strength thermal properties cured epoxy PRO-SET Resin/Hardener combination has potential maximum cured physical properties can achieved postcuring achieve 100% properties necessary raise temperature laminate target temperature period time resin/hardener combination UNIVERSAL STRAP ON older engines wIthout muffler bolts 29-45 JT-40P $2595 51-6 1 JT-60P $2795 MOKI61 JT-MK61 P $2995 range target temperatures target temperature within range minimum corresponding hold time required epoxy reach 100% its potential physical properties Higher target temperatures will require shorter hold times lower target temperature longer hold time can provide component physical properties equal provided higher target temperature shorter hold time However maximum physical properties will reached target temperature below optimum range target temperature resin/hardener combination may determined physical properties desired component limits available equipment reach hold target temperatures avoid potential inducing flaws laminate thermal shock increase temperature slowly exceed maximum target temperature 1800F 820 C PRO-SET 125/229 minimum post-cure cure 100% resin 16 hours room temperature plus eight hours 1500 Remember times temperatures will different other brands resin hardener What does mean use room temperature wet layups us do higher-temperature post-cure epoxy whatever part make may fully cured could cause some problems slight creeping epoxy model sits out sun hot day Several Wakefield field fliers have experienced problems Russian Ukrainian aramid/epoxy motor tubes softening after being heated rubber warmer Sometimes will soften resin enough allow tube twist under torque wound motor giving unwanted stab tilt information PRO-SET resin vacuum bagging equipment carbon fiber other high-tech products write Composite Structures Technology Box 642 Tehachapi CA 93581 technical assistance number 805 822-4162 toll-free order number 800 338-1278 91 PASP 108$3295 JT-F74PFox 74$3395 JT-M108PMAX91-108$3595 JT-BGXPMAX BOXI$3695 JT-ST69PST 61-75-90$3395 JT-5T25PST 25-3000$3595 JT-MK15OPMOKI 15$3695 JT-W12OPWEBRA 1 20$3395 Y7TECLI 116 Model Aviation 1 $3195 MAIL ORDER Please add $400 UPS shipping check MO Visa MC coo accepted Add $450 eaSra coo california residenla add 8% sales lax Pitts-Style Mufflers UNIVERSAL BOLT ON sIde mounted engines WIll fit 50% moat engInes made after 1888 Easy attach Just bolt muffler engIne wIth factory muffler bolts bolts sup wIth muffler JT-4OPB 29-45 $2795 Exhaust extensions worm drive mounting strap Included
Edition: Model Aviation - 1995/11
Page Numbers: 114, 115, 116
Edition: Model Aviation - 1995/11
Page Numbers: 114, 115, 116
FREE FLIGHT DURATION BACK IN THE OLDEN DAYS before carbon fiber circle tow towlines like gliders themselves used simple remember local experts would show up contest red silk-covered Jasco Nordic 72 new 10-cent ball kite string contest over string stayed behind Now technology rules wont allow thing circle towhooks used now need pull 15 20 pounds unlatch cotton kite string would break long before So would wings thats another story rules require line wound up immediately after flight Common practice use simple winch reel up line between flights After line stretched out unhooked winch Most fliers store winch during tow sticking back waistband pants rules permit small button attached end line keep slipping through fliers hand Recently 1995 free flight team member Andrew Barron showed sets up towline reel Its far cry ball kite string towline actually two different materials top two-thirds line part closest model 80-pound-test braided Spectra line Andrew uses Spiderwire Safariland 3120 E Mission Blvd Ontario CA 91761 remainder 50meter-long towline 90-pound-test nylon monofilament fishing line Editors note probably DuPont Stren available Jim Bradley Bradley Model Products 1337 Pine Sap Ct Orlando FL 32825 Using two different lines ailows Andrew take advantage best characteristics both braided Spectra monofilament Spectra line much thinner monofilament reduces line drag allows faster model speed zoom launch monofilament however nice fat making easier handle monofilament line also much less likely tangleimportant flying weeds two lines simply tied together knot covered heat-shrink tubing wont snag careful too much heat can melt line Andrew attaches small rectangular piece stiff plastic bottom end monofilament act button cuts red plastic epoxy squeegee anything about 46 thick would Next sticks smail piece adhesive-backed Velcro onto button wraps matching Velcro strip around center towline reel hook up line ail has touch button Velcro strip reel start turning crank way Israeli tow reels also available Jim Bradley Aluminum D-Box though Doug Joyce noted canard FiC models structurai ideas would translate conventional tail-last models Like FAI Power fliers Doug uses thin aluminum skin over sheet balsa form wing some recent wings has adding second layer tin aluminum spar forward top bottom add extra strength rigidity weight gain about 20 grams long-wing model Heres Doug builds wing piece aluminum cut slightly longer wing panel little double chord width taped down piece thick glass carefully cleaned Another piece aiuminum cut length piece wide distance back wing spar around leading edge spar cleaned both sides epoxied center larger piece aluminum balsa skins epoxied place spar ribs 114 Model Aviation ro used quick attachment towline reel line can reeled after flight Loaded ready lightweight reel carries 50 meters line Flag signals towhook unlatch model release US FlA team member Andrew Barron model M&K Moscow other built Andrew using M&K components added Finally rest balsaaluminum sandwich pulled folded over form top wing skin Doug says biggest problem getting second piece aluminum down air bubbles uses brayer roll out pricks bubbles pin vent information building aluminum wings see 1988 NFFS Sympo Randy Archers article Back issues Symposium available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 Mike Mike Mulligan sent some new Wakefield components handling made Igor Vivchar lives Odessa Ukraine items include DPR delayed prop release front end motor tube pylon connector tailboom Since Igor s products non standard sizes Mike selling complete sets. Actually makes lot easier trying match front end source motor tube another have epoxy nose ring connector add stab mount DT hammer supplied Add wing tail epoxy pylon get correct CG Probably interesting part Igors fuselage connector joins aramid fiber motor tube skinny carbon-and-aiuminum tailboom Most other two-piece Wakefield fuselages use slip-fit coupler rear motor peg holds two pieces together alignment Igors uses threaded ring clamps two halves together motor peg forward connector ailows easily remove tailboom get broken motor conventional connector have pull rear peg firstno easy feat wrapped remains blown motor Totai weight connector 77 grams front end also bit unusual uses simple external lever start prop after launch mounts very wide nose ring slips over outside motor tube front end itself simple lightweight 377 grams including nose ring bobbin no blades uses detachable bobbin can wind prop off launch blades feather reduce drag Mike also included Igors new front ends features simpler nonfeathering DPR Two small arms project sides hub just front blade arms motor wound torque moves arms slightly prevent blades folding back launch Most modern Wakefields have very short noses prop blades fold back under wings blades must held forward launch would hit wing started turning After motor winds down arms rotate out way allowing blades fold glide No exact word yet price availability new non-feathering front ends Mike thinks will slightly less expensive feathering units As mentioned front ends available complete sets front end tube pylon boom etc $290 plus $10 postage may seem bit high does include both timer timer-start switch already mounted item Mike does sell separately really neat three-position rudder fitting $20 allows use straight slightly left rudder position burst slight right setting cruise third setting right turn glide should simpler easier alternative using wing wiggler get straight climb burstThe fitting incredibly small light 07 grams uses no springs November1995 115 U Clever connector two-piece Vivchar Wakefield fuselage allows removal tailboom removing rear motor peg Vivchar front end has detachable bobbin winding Torque operated arms hold blades out launch Rings adjust thrust Tiny rudder stop allows three separate rudder positions worked line holds lever intermediate rudder setting line off two lines timer Weight 7 gram released rudder swings final setting NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# -I1z 6 Buffered Y harness 7354# 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Cona 7356# 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type ordering Part # followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hite RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 catches might cause problems Instead intermediate stop the cruise pivoting arm line runs other end arm up timer line released stop pivots out way rudder moves over glide setting some reason fitting comes incredibly long screws could cut down save fraction gram Mike also anticipating shipment finished wings Igor sample saw looked quite good follows current practice using molded carbon fiber D box carbon trailing edge carboncapped balsa ribs covering white polyester fabric Weight finished wing 575 grams information Igor Vivchar products call Mike Mulligan 714 633-9282 after 5 pm Pacific Standard Time Epoxy Update Gail Gewain Composite Structures Technology tells has name change epoxy resins stock Gougeon Laminating Resin now called PRO-SET epoxy addition product line being expanded CST will stocking PROSET resin hardener quarts well gallons Also available mini pump simplifies measuring CST will continue sell West Systems epoxy also made Gougeon Brothers Inc Gail also included some technical information PRO-SET post-curing epoxy Post-curing controlled heating epoxy laminate shorten overall cure time improve strength thermal properties cured epoxy PRO-SET Resin/Hardener combination has potential maximum cured physical properties can achieved postcuring achieve 100% properties necessary raise temperature laminate target temperature period time resin/hardener combination UNIVERSAL STRAP ON older engines wIthout muffler bolts 29-45 JT-40P $2595 51-6 1 JT-60P $2795 MOKI61 JT-MK61 P $2995 range target temperatures target temperature within range minimum corresponding hold time required epoxy reach 100% its potential physical properties Higher target temperatures will require shorter hold times lower target temperature longer hold time can provide component physical properties equal provided higher target temperature shorter hold time However maximum physical properties will reached target temperature below optimum range target temperature resin/hardener combination may determined physical properties desired component limits available equipment reach hold target temperatures avoid potential inducing flaws laminate thermal shock increase temperature slowly exceed maximum target temperature 1800F 820 C PRO-SET 125/229 minimum post-cure cure 100% resin 16 hours room temperature plus eight hours 1500 Remember times temperatures will different other brands resin hardener What does mean use room temperature wet layups us do higher-temperature post-cure epoxy whatever part make may fully cured could cause some problems slight creeping epoxy model sits out sun hot day Several Wakefield field fliers have experienced problems Russian Ukrainian aramid/epoxy motor tubes softening after being heated rubber warmer Sometimes will soften resin enough allow tube twist under torque wound motor giving unwanted stab tilt information PRO-SET resin vacuum bagging equipment carbon fiber other high-tech products write Composite Structures Technology Box 642 Tehachapi CA 93581 technical assistance number 805 822-4162 toll-free order number 800 338-1278 91 PASP 108$3295 JT-F74PFox 74$3395 JT-M108PMAX91-108$3595 JT-BGXPMAX BOXI$3695 JT-ST69PST 61-75-90$3395 JT-5T25PST 25-3000$3595 JT-MK15OPMOKI 15$3695 JT-W12OPWEBRA 1 20$3395 Y7TECLI 116 Model Aviation 1 $3195 MAIL ORDER Please add $400 UPS shipping check MO Visa MC coo accepted Add $450 eaSra coo california residenla add 8% sales lax Pitts-Style Mufflers UNIVERSAL BOLT ON sIde mounted engines WIll fit 50% moat engInes made after 1888 Easy attach Just bolt muffler engIne wIth factory muffler bolts bolts sup wIth muffler JT-4OPB 29-45 $2795 Exhaust extensions worm drive mounting strap Included
Edition: Model Aviation - 1995/11
Page Numbers: 114, 115, 116
FREE FLIGHT DURATION BACK IN THE OLDEN DAYS before carbon fiber circle tow towlines like gliders themselves used simple remember local experts would show up contest red silk-covered Jasco Nordic 72 new 10-cent ball kite string contest over string stayed behind Now technology rules wont allow thing circle towhooks used now need pull 15 20 pounds unlatch cotton kite string would break long before So would wings thats another story rules require line wound up immediately after flight Common practice use simple winch reel up line between flights After line stretched out unhooked winch Most fliers store winch during tow sticking back waistband pants rules permit small button attached end line keep slipping through fliers hand Recently 1995 free flight team member Andrew Barron showed sets up towline reel Its far cry ball kite string towline actually two different materials top two-thirds line part closest model 80-pound-test braided Spectra line Andrew uses Spiderwire Safariland 3120 E Mission Blvd Ontario CA 91761 remainder 50meter-long towline 90-pound-test nylon monofilament fishing line Editors note probably DuPont Stren available Jim Bradley Bradley Model Products 1337 Pine Sap Ct Orlando FL 32825 Using two different lines ailows Andrew take advantage best characteristics both braided Spectra monofilament Spectra line much thinner monofilament reduces line drag allows faster model speed zoom launch monofilament however nice fat making easier handle monofilament line also much less likely tangleimportant flying weeds two lines simply tied together knot covered heat-shrink tubing wont snag careful too much heat can melt line Andrew attaches small rectangular piece stiff plastic bottom end monofilament act button cuts red plastic epoxy squeegee anything about 46 thick would Next sticks smail piece adhesive-backed Velcro onto button wraps matching Velcro strip around center towline reel hook up line ail has touch button Velcro strip reel start turning crank way Israeli tow reels also available Jim Bradley Aluminum D-Box though Doug Joyce noted canard FiC models structurai ideas would translate conventional tail-last models Like FAI Power fliers Doug uses thin aluminum skin over sheet balsa form wing some recent wings has adding second layer tin aluminum spar forward top bottom add extra strength rigidity weight gain about 20 grams long-wing model Heres Doug builds wing piece aluminum cut slightly longer wing panel little double chord width taped down piece thick glass carefully cleaned Another piece aiuminum cut length piece wide distance back wing spar around leading edge spar cleaned both sides epoxied center larger piece aluminum balsa skins epoxied place spar ribs 114 Model Aviation ro used quick attachment towline reel line can reeled after flight Loaded ready lightweight reel carries 50 meters line Flag signals towhook unlatch model release US FlA team member Andrew Barron model M&K Moscow other built Andrew using M&K components added Finally rest balsaaluminum sandwich pulled folded over form top wing skin Doug says biggest problem getting second piece aluminum down air bubbles uses brayer roll out pricks bubbles pin vent information building aluminum wings see 1988 NFFS Sympo Randy Archers article Back issues Symposium available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 Mike Mike Mulligan sent some new Wakefield components handling made Igor Vivchar lives Odessa Ukraine items include DPR delayed prop release front end motor tube pylon connector tailboom Since Igor s products non standard sizes Mike selling complete sets. Actually makes lot easier trying match front end source motor tube another have epoxy nose ring connector add stab mount DT hammer supplied Add wing tail epoxy pylon get correct CG Probably interesting part Igors fuselage connector joins aramid fiber motor tube skinny carbon-and-aiuminum tailboom Most other two-piece Wakefield fuselages use slip-fit coupler rear motor peg holds two pieces together alignment Igors uses threaded ring clamps two halves together motor peg forward connector ailows easily remove tailboom get broken motor conventional connector have pull rear peg firstno easy feat wrapped remains blown motor Totai weight connector 77 grams front end also bit unusual uses simple external lever start prop after launch mounts very wide nose ring slips over outside motor tube front end itself simple lightweight 377 grams including nose ring bobbin no blades uses detachable bobbin can wind prop off launch blades feather reduce drag Mike also included Igors new front ends features simpler nonfeathering DPR Two small arms project sides hub just front blade arms motor wound torque moves arms slightly prevent blades folding back launch Most modern Wakefields have very short noses prop blades fold back under wings blades must held forward launch would hit wing started turning After motor winds down arms rotate out way allowing blades fold glide No exact word yet price availability new non-feathering front ends Mike thinks will slightly less expensive feathering units As mentioned front ends available complete sets front end tube pylon boom etc $290 plus $10 postage may seem bit high does include both timer timer-start switch already mounted item Mike does sell separately really neat three-position rudder fitting $20 allows use straight slightly left rudder position burst slight right setting cruise third setting right turn glide should simpler easier alternative using wing wiggler get straight climb burstThe fitting incredibly small light 07 grams uses no springs November1995 115 U Clever connector two-piece Vivchar Wakefield fuselage allows removal tailboom removing rear motor peg Vivchar front end has detachable bobbin winding Torque operated arms hold blades out launch Rings adjust thrust Tiny rudder stop allows three separate rudder positions worked line holds lever intermediate rudder setting line off two lines timer Weight 7 gram released rudder swings final setting NEED RIC AccEssoRiEs FLY TO HITEC RCD FOR ALL YOUR ACCESSORY NEEDS 6 Y harness 7351# -I1z 6 Buffered Y harness 7354# 12 Aileron Extension 7345# 24 Aileron Extension 7346# 6 Buffered Servo Cona 7356# 9 Male Servo Conn 7342# 9 Female shown 7343# Switch Harness w/Battery & Clip 7215# Please specify connector type ordering Part # followed Airt J Fut S HitecIRCD & JR ALSO AVAILABLE 50 ft Bulk Servo Wire 3001 Rubber Ducky Antenna 1125 Flight Preserver w/Velcro 8480 hite RCD 10729 Wheatlands Ave #C Santee CA 92071-2883 619 258-4940 catches might cause problems Instead intermediate stop the cruise pivoting arm line runs other end arm up timer line released stop pivots out way rudder moves over glide setting some reason fitting comes incredibly long screws could cut down save fraction gram Mike also anticipating shipment finished wings Igor sample saw looked quite good follows current practice using molded carbon fiber D box carbon trailing edge carboncapped balsa ribs covering white polyester fabric Weight finished wing 575 grams information Igor Vivchar products call Mike Mulligan 714 633-9282 after 5 pm Pacific Standard Time Epoxy Update Gail Gewain Composite Structures Technology tells has name change epoxy resins stock Gougeon Laminating Resin now called PRO-SET epoxy addition product line being expanded CST will stocking PROSET resin hardener quarts well gallons Also available mini pump simplifies measuring CST will continue sell West Systems epoxy also made Gougeon Brothers Inc Gail also included some technical information PRO-SET post-curing epoxy Post-curing controlled heating epoxy laminate shorten overall cure time improve strength thermal properties cured epoxy PRO-SET Resin/Hardener combination has potential maximum cured physical properties can achieved postcuring achieve 100% properties necessary raise temperature laminate target temperature period time resin/hardener combination UNIVERSAL STRAP ON older engines wIthout muffler bolts 29-45 JT-40P $2595 51-6 1 JT-60P $2795 MOKI61 JT-MK61 P $2995 range target temperatures target temperature within range minimum corresponding hold time required epoxy reach 100% its potential physical properties Higher target temperatures will require shorter hold times lower target temperature longer hold time can provide component physical properties equal provided higher target temperature shorter hold time However maximum physical properties will reached target temperature below optimum range target temperature resin/hardener combination may determined physical properties desired component limits available equipment reach hold target temperatures avoid potential inducing flaws laminate thermal shock increase temperature slowly exceed maximum target temperature 1800F 820 C PRO-SET 125/229 minimum post-cure cure 100% resin 16 hours room temperature plus eight hours 1500 Remember times temperatures will different other brands resin hardener What does mean use room temperature wet layups us do higher-temperature post-cure epoxy whatever part make may fully cured could cause some problems slight creeping epoxy model sits out sun hot day Several Wakefield field fliers have experienced problems Russian Ukrainian aramid/epoxy motor tubes softening after being heated rubber warmer Sometimes will soften resin enough allow tube twist under torque wound motor giving unwanted stab tilt information PRO-SET resin vacuum bagging equipment carbon fiber other high-tech products write Composite Structures Technology Box 642 Tehachapi CA 93581 technical assistance number 805 822-4162 toll-free order number 800 338-1278 91 PASP 108$3295 JT-F74PFox 74$3395 JT-M108PMAX91-108$3595 JT-BGXPMAX BOXI$3695 JT-ST69PST 61-75-90$3395 JT-5T25PST 25-3000$3595 JT-MK15OPMOKI 15$3695 JT-W12OPWEBRA 1 20$3395 Y7TECLI 116 Model Aviation 1 $3195 MAIL ORDER Please add $400 UPS shipping check MO Visa MC coo accepted Add $450 eaSra coo california residenla add 8% sales lax Pitts-Style Mufflers UNIVERSAL BOLT ON sIde mounted engines WIll fit 50% moat engInes made after 1888 Easy attach Just bolt muffler engIne wIth factory muffler bolts bolts sup wIth muffler JT-4OPB 29-45 $2795 Exhaust extensions worm drive mounting strap Included
