YS63 quick report.
09-21-2002 | 08:36 PM
#1
YS63 quick report.
I just completed Madness #3, this time deciding on the YS63 for motivation.
I have not really found a need to put my Yamada motors on a stand. The cowl on the Madness is very open, so today we went to the show with a gallon of CoolPower 30% Heli fuel, filled her up and prepared for the first flight.
Prop is an APC 14-4W with a OS #F plug. I ran the starter for 6-10 seconds to get the fuel flowing and the tank pressure up., lit the glow plug, and the motor started for it's first time on the first back flip. I turned the needle in for a nice smooth soundnot quite to peak and then backed it out a half turn. I pointed the nose upwards, and at about half throttle I let go, right into a fairly rapid climb for a few seconds and then some gentle turns and loops and rolls to allow the motor to turn and get some air flowing over it.
After three flights with awesome and flawless performence, I turned in the idle needle about 1/4 because it was slowing down too much for my taste after removing the glow heater. The idle smoothed out a little but mostly, the idle did not slow after removing the glow driver anymore.
I have not checked the RPMs, but my ear tell me that the motor is turning where it is very happy, and the Madness leaps into a vertical screaming climb from a hover or backing decent. Hovers with the Madness occur near 1/4 throttle. Entering flat or rising spins takes throttle management as full throttle pulls the airplane out of the manuver before it established nicely.
OK, another perfect Yamada. I am very pleased.
My trick to making it run so well. First, use the CoolPower 30%. Then an OS #F. Don't touch the regulator or low speed needle before the first few runs (as in do not fiddle with the motor while admiring it, just remove it from box and mount the sucker), and then only move the idle needle if TRULY needed. Place the high speed needle per the instructions. Use a 14-4W if you are funflying. It's another "motor for dummies" with performance for professionals. Me, I always need the easy to use motors, enjoying only to fiddle with other parts of the airplane and building.
Two big thumbs up and my toes in the air to boot!!!
Mark
I have not really found a need to put my Yamada motors on a stand. The cowl on the Madness is very open, so today we went to the show with a gallon of CoolPower 30% Heli fuel, filled her up and prepared for the first flight.
Prop is an APC 14-4W with a OS #F plug. I ran the starter for 6-10 seconds to get the fuel flowing and the tank pressure up., lit the glow plug, and the motor started for it's first time on the first back flip. I turned the needle in for a nice smooth soundnot quite to peak and then backed it out a half turn. I pointed the nose upwards, and at about half throttle I let go, right into a fairly rapid climb for a few seconds and then some gentle turns and loops and rolls to allow the motor to turn and get some air flowing over it.
After three flights with awesome and flawless performence, I turned in the idle needle about 1/4 because it was slowing down too much for my taste after removing the glow heater. The idle smoothed out a little but mostly, the idle did not slow after removing the glow driver anymore.
I have not checked the RPMs, but my ear tell me that the motor is turning where it is very happy, and the Madness leaps into a vertical screaming climb from a hover or backing decent. Hovers with the Madness occur near 1/4 throttle. Entering flat or rising spins takes throttle management as full throttle pulls the airplane out of the manuver before it established nicely.
OK, another perfect Yamada. I am very pleased.
My trick to making it run so well. First, use the CoolPower 30%. Then an OS #F. Don't touch the regulator or low speed needle before the first few runs (as in do not fiddle with the motor while admiring it, just remove it from box and mount the sucker), and then only move the idle needle if TRULY needed. Place the high speed needle per the instructions. Use a 14-4W if you are funflying. It's another "motor for dummies" with performance for professionals. Me, I always need the easy to use motors, enjoying only to fiddle with other parts of the airplane and building.
Two big thumbs up and my toes in the air to boot!!!
Mark
09-23-2002 | 05:04 PM
#2
Senior Member
My Feedback: (1)
I concur..
Mark,
After a similar experiance with my first YS .63 (in a .40 sized GP CAP 232) I bought a second one for my Sig Fazor. I am just as pleased, but had a different experience to start. After falling in love with my YS 1.20, my YS .91 AC, YS .53 and YS .63, this latest .63 just would NOT run right. I was shocked and convinced that I must be doing something wrong. Finally, I gave up and admitted to myself that every engine maker gets a bad one out now and then, and after a call to the importer, sent it in for warranty repair. Well, this weekend I took the returned engine out. The slip in the box indicated they fixed a problem with the plunger in the regulator AND, for no charge, they update the engine with their NEW piston design.
Now, it runs just like it is supposed to, and like your set-up, with an APC 14 x 4 wide, OS type F plug and 27.5% Nitro fuel (I custome blend my Nitro percentage), it hauls my Fazer around like mad.
I am once again pleased. They had a problem with this one from the plant, but got it fixed right up and it now runs like a champ...
Lee
After a similar experiance with my first YS .63 (in a .40 sized GP CAP 232) I bought a second one for my Sig Fazor. I am just as pleased, but had a different experience to start. After falling in love with my YS 1.20, my YS .91 AC, YS .53 and YS .63, this latest .63 just would NOT run right. I was shocked and convinced that I must be doing something wrong. Finally, I gave up and admitted to myself that every engine maker gets a bad one out now and then, and after a call to the importer, sent it in for warranty repair. Well, this weekend I took the returned engine out. The slip in the box indicated they fixed a problem with the plunger in the regulator AND, for no charge, they update the engine with their NEW piston design.
Now, it runs just like it is supposed to, and like your set-up, with an APC 14 x 4 wide, OS type F plug and 27.5% Nitro fuel (I custome blend my Nitro percentage), it hauls my Fazer around like mad.
I am once again pleased. They had a problem with this one from the plant, but got it fixed right up and it now runs like a champ...
Lee
09-23-2002 | 05:42 PM
#3
YS63 quick report.
Will you guys tach your YS63 w/ 14x4 APC prop. I had to sent it my 63 for the regulator spring went bad. They fixed my problem and upgraded me to a new piston.
My performance before was with byron 20/20
13x6APC 11,500 peak flew it at 10,800
14x4 zinger 10,800 peak flew it at 10,200
now after the repairs. I ran about 40oz of fuel before I took these figures.
same 13x6 APC prop 10,600peak
Same 14x4 Zinger 9,600
so my rpm are down about 1000
I talked to dave at YS he told me to put on a 12x6 and fly it for about a gallon. So far I have flown almost 3/4 gallon. I haven't tached it w/ 12x6. I don't want to get dissappointed.
My performance before was with byron 20/20
13x6APC 11,500 peak flew it at 10,800
14x4 zinger 10,800 peak flew it at 10,200
now after the repairs. I ran about 40oz of fuel before I took these figures.
same 13x6 APC prop 10,600peak
Same 14x4 Zinger 9,600
so my rpm are down about 1000
I talked to dave at YS he told me to put on a 12x6 and fly it for about a gallon. So far I have flown almost 3/4 gallon. I haven't tached it w/ 12x6. I don't want to get dissappointed.
