"Kingcat foamie" motor overload?
03-06-2005, 02:10 PM
#1
Senior Member
Thread Starter
My Feedback: (1)
Join Date: Feb 2004
Location: Nevada City ,
CA
Posts: 602
Likes: 0
Received 0 Likes
on
0 Posts
"Kingcat foamie" motor overload?
So, I had to make one of these here kingcats that are sweeping the nation, (or at least this forum 
) I flew mine yesterday for the first time, and it was Awesome, with one exception... anywhere above 3/4 throttle, the speed control shuts off as if its going over its load. I am using a Park370-5400kv, firebird prop, CC25 and TP860. AUW is 9.5 oz. I have run this setup with the motor in a gearbox and no problem. I have read of other people using this basic setup (though most use the 4100) with no problems. is is because the 5400kv draws too much amp running direct drive? do I need a different prop? (where would I find a smaller one?)
Any input would be most appreciated
I love this thing, want to see a full throttle pass 
) I flew mine yesterday for the first time, and it was Awesome, with one exception... anywhere above 3/4 throttle, the speed control shuts off as if its going over its load. I am using a Park370-5400kv, firebird prop, CC25 and TP860. AUW is 9.5 oz. I have run this setup with the motor in a gearbox and no problem. I have read of other people using this basic setup (though most use the 4100) with no problems. is is because the 5400kv draws too much amp running direct drive? do I need a different prop? (where would I find a smaller one?) Any input would be most appreciated
I love this thing, want to see a full throttle pass
03-06-2005, 02:44 PM
#2
Senior Member
Join Date: Jan 2004
Location: Oak Park,
CA
Posts: 390
Likes: 0
Received 0 Likes
on
0 Posts
RE: "Kingcat foamie" motor overload?
I'm not sure what size the firebird prop is, but APC makes good props. check out www.hobbypeople.net or the APC website, I think its www.apcprop.com
03-06-2005, 03:11 PM
#3
Senior Member
My Feedback: (12)
Join Date: Jul 2003
Location: Napoleon, OH
Posts: 340
Likes: 0
Received 0 Likes
on
0 Posts
RE: "Kingcat foamie" motor overload?
Sounds like a prop issue. I'm running an APC 7 X 5E on a twin stator CD Rom motor, pulling approx. 10-12 amps at full throttle. The plane is awesome! [X(]
The specs:
Wingspan-32"
Length-31"
AUW-10.6 oz. w/Thunder Power Gen 2 1320 3 cell
Prop-APC 7 X 5E
Motor-Double stator 9 turn (gobrushless parts)
Battery-Thunder Power Gen 2 1320 mah 3 cell
ESC-Eflite 20 amp
Servos-9 gram generic
I wanted something fast, and I'd say this plane is flying in the mid 50 mph range, if not faster. It covers ground in a hurry, and it is "on rails". It has no apparent bad habits and is a blast to fly, and the motor sounds fantastic on high speed passes!
I've been flying mainly on low rates, but the roll rate is excellent, and it holds it's line very well while rolling.
The specs:
Wingspan-32"
Length-31"
AUW-10.6 oz. w/Thunder Power Gen 2 1320 3 cell
Prop-APC 7 X 5E
Motor-Double stator 9 turn (gobrushless parts)
Battery-Thunder Power Gen 2 1320 mah 3 cell
ESC-Eflite 20 amp
Servos-9 gram generic
I wanted something fast, and I'd say this plane is flying in the mid 50 mph range, if not faster. It covers ground in a hurry, and it is "on rails". It has no apparent bad habits and is a blast to fly, and the motor sounds fantastic on high speed passes!
I've been flying mainly on low rates, but the roll rate is excellent, and it holds it's line very well while rolling.
03-07-2005, 01:26 AM
#4
Senior Member
Thread Starter
My Feedback: (1)
Join Date: Feb 2004
Location: Nevada City ,
CA
Posts: 602
Likes: 0
Received 0 Likes
on
0 Posts
RE: "Kingcat foamie" motor overload?
well, I tried again today with an apc 5.5 x 4.5, it only made things worse so I put the firebird prop back on and went for it, just kept off full throttle...... well, I guess the motor got very hot, it melted the hot glue holding it on and there was some black stuff dripping out of the bearing around the shaft that looked suspiciously like burned oil. also, the battery got Very warm. I have run this same setup with the motor in a gearbox and no problems.... could something have gone wrong with the motor?
any thoughts here? you guys who have these things
so I put the firebird prop back on and went for it, just kept off full throttle...... well, I guess the motor got very hot, it melted the hot glue holding it on and there was some black stuff dripping out of the bearing around the shaft that looked suspiciously like burned oil. also, the battery got Very warm. I have run this same setup with the motor in a gearbox and no problems.... could something have gone wrong with the motor?any thoughts here? you guys who have these things
