Need help with E-Starter power stuff!!!!!!!
02-16-2004, 05:40 PM
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Need help with E-Starter power stuff!!!!!!!
yo,
I have an e-starter,a 300 motor, an ICS 100 ESC, and a 8.4v 730 mah battery. Should I use a 1080 propeller or will it pull too many amps.? People say I should try a 9070, should I? If I want more thrust than should I use a 1080 but get a better ESC to handle the amps? Will the motor burn out soon with a 8.4v? I NEED HELP!!!!!! AAAAAAAHHHHHHHHHHH!!!!!!!
I have an e-starter,a 300 motor, an ICS 100 ESC, and a 8.4v 730 mah battery. Should I use a 1080 propeller or will it pull too many amps.? People say I should try a 9070, should I? If I want more thrust than should I use a 1080 but get a better ESC to handle the amps? Will the motor burn out soon with a 8.4v? I NEED HELP!!!!!! AAAAAAAHHHHHHHHHHH!!!!!!!
02-17-2004, 08:59 AM
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RE: Need help with E-Starter power stuff!!!!!!!
First and foremost, you don't need to post your questions on the end of every thread that might have something to do with your problem. One post in a separate thread is all that's necessary. It's easier on everyone, especially you. You don't have to check in umpteen different places for an answer!!
Imagine if everyone posted their question everywhere they thought might be able to generate an answer. What a mess!!! The whole point of having separate threads and separate forums for different subjects is to keep things neat and organized so you can find the answer when you need to. Please, one post per subject next time, okay?
It's your battery. You're trying to draw more Amps from the battery than it can produce. The voltage is dropping, and the low-voltage cutoff is kicking in.
Luckily, yours will improve with use. After a few cycles, that NiMH battery will start working better.
You can improve things by switching to a 9x7 propeller. This will reduce the load on the motor so it won't draw as many Amps. You can switch back to the 10x8 prop after 3-4 flights, but keep your full throttle flying to a minimum.
Above all, don't sit there running the motor at full throttle on the ground for extended periods. The forward motion of the plane through the air causes cooling air to flow over the motor. Prop blast does very little to cool the motor, because most of the prop blast is toward the outer edges of the prop. Extended static runs will cause the motor to overheat in many cases. Best not to chance it.
Those 700mAh-ish AAA NiMH cells max out at around 7 Amps. The EPS300C drive in your E-Starter normally draws a little more than 7 Amps on 7 cells. Even properly broken in, you're pushing the battery pack to its limits.
Imagine if everyone posted their question everywhere they thought might be able to generate an answer. What a mess!!! The whole point of having separate threads and separate forums for different subjects is to keep things neat and organized so you can find the answer when you need to. Please, one post per subject next time, okay?
It's your battery. You're trying to draw more Amps from the battery than it can produce. The voltage is dropping, and the low-voltage cutoff is kicking in.
Luckily, yours will improve with use. After a few cycles, that NiMH battery will start working better.
You can improve things by switching to a 9x7 propeller. This will reduce the load on the motor so it won't draw as many Amps. You can switch back to the 10x8 prop after 3-4 flights, but keep your full throttle flying to a minimum.
Above all, don't sit there running the motor at full throttle on the ground for extended periods. The forward motion of the plane through the air causes cooling air to flow over the motor. Prop blast does very little to cool the motor, because most of the prop blast is toward the outer edges of the prop. Extended static runs will cause the motor to overheat in many cases. Best not to chance it.
Those 700mAh-ish AAA NiMH cells max out at around 7 Amps. The EPS300C drive in your E-Starter normally draws a little more than 7 Amps on 7 cells. Even properly broken in, you're pushing the battery pack to its limits.
02-17-2004, 05:05 PM
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RE: Need help with E-Starter power stuff!!!!!!!
Ok Then,
(Since there are some new questions I am also making a new thread, so dont get mad Mr. Kirsch, be happy :-))
So lets say I flew my e-starter the first 6 times with a 7.2 600 mah and a 8.4 730mah, each 3 times, I'm stupid so I break in the batteries like the LHS man told me to these 6 flights. Each time I flew the LVC turned off the motor after about 3 minutes on each battery. Now since these were the first times using the batteries do you think they are ruined? Also, what batteries would you recommend for a GWS 300 motor? If I stick with a 9x7 prop will the amps it pulls be good enough for the batteries I got? Do I need to discharge my batteries completely every time? If so, how? How should I break in the batteries? Also the motor?
(Since there are some new questions I am also making a new thread, so dont get mad Mr. Kirsch, be happy :-))
So lets say I flew my e-starter the first 6 times with a 7.2 600 mah and a 8.4 730mah, each 3 times, I'm stupid so I break in the batteries like the LHS man told me to these 6 flights. Each time I flew the LVC turned off the motor after about 3 minutes on each battery. Now since these were the first times using the batteries do you think they are ruined? Also, what batteries would you recommend for a GWS 300 motor? If I stick with a 9x7 prop will the amps it pulls be good enough for the batteries I got? Do I need to discharge my batteries completely every time? If so, how? How should I break in the batteries? Also the motor?
