Search: Posts Made By: alaursen
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Replies: 7
Views: 1,553
Posted By alaursen

OK well that's promising. However, I would really...

OK well that's promising. However, I would really like to know what is actually meant by this statement - what was the translation from Chinese to English? Why would they put this in an instruction...
Replies: 7
Views: 1,553
Posted By alaursen

Yes! It was easy to set up for aircraft. The only...

Yes! It was easy to set up for aircraft. The only issue so far is that the gimbals are really low quality with a "loose" feel to them. In fact, I may try to return mine for another one because the...
Replies: 7
Views: 1,553
Posted By alaursen

This will bring you much happiness

I just sprung for the Exceed RC 2.4G SS transmitter at $50 (with receiver). The instruction manual for setting the unit via computer says "When you buy the CT6 series remote systems, with a...
Forum: Power Systems
01-06-2010, 04:31 AM
Replies: 43
Views: 16,279
Posted By alaursen

I measure volts and current (clamp-on) separately...

I measure volts and current (clamp-on) separately so can easily compute watts. I'm new to powered flight - thanks for the input on the Tele. I just put at least 80 hours building it over the last 4...
Forum: Power Systems
01-06-2010, 04:14 AM
Replies: 43
Views: 16,279
Posted By alaursen

It is a paved field (SCCMAS.ORG). However, the...

It is a paved field (SCCMAS.ORG). However, the motor is rated for more than twice that. Again, what gives with the Hobby-Lobby reco? Seems like 3S LiPo is at the very bottom of the performance range.
Forum: Power Systems
01-06-2010, 03:53 AM
Replies: 43
Views: 16,279
Posted By alaursen

OK due to the excellent input from this thread, I...

OK due to the excellent input from this thread, I will assume the power is close to battery voltage (ESC input) times the measured current. The RPM cannot predict motor voltage when loaded with a...
Forum: Power Systems
01-06-2010, 03:36 AM
Replies: 43
Views: 16,279
Posted By alaursen

I understand your point about 3 phase versus DC...

I understand your point about 3 phase versus DC and large voltage drops (power or heat = V X A). However, what do you think about the KV versus RPM? Assuming I am measuring accurately with the tach...
Forum: Power Systems
01-06-2010, 03:18 AM
Replies: 43
Views: 16,279
Posted By alaursen

Hmm, I take it you mean underpowered. If so, I...

Hmm, I take it you mean underpowered. If so, I wonder why HL has this recommendation posted on the box for the Telemaster. Unless my power calcs are way off. Even if I use the best case 3S voltage of...
Forum: Power Systems
01-06-2010, 03:08 AM
Replies: 43
Views: 16,279
Posted By alaursen

It may seem low, but if the manufacturer says the...

It may seem low, but if the manufacturer says the KV=800 and my measured RPM = 7300, doesn't that mean the motor must be "seeing" 9.1 volts? Maybe I don't understand KV correctly, however, one thing...
Forum: Power Systems
01-06-2010, 03:03 AM
Replies: 43
Views: 16,279
Posted By alaursen

Thanks Kyleservicetech, My battery voltage...

Thanks Kyleservicetech,

My battery voltage to the ESC IS 3S = 11.1 volts. However, the motor obviously does not see this due to drops in the ESC and wiring, which can be significant at 40 A. I...
Forum: Power Systems
01-06-2010, 02:15 AM
Replies: 43
Views: 16,279
Posted By alaursen

I just bought the GlowBee tach today for $28...

I just bought the GlowBee tach today for $28 cause I was in a hurry to measure my Telemaster 40 setup which I'm almost ready to fly (just need to cover it). I found the tach picked up the 3600...
Showing results 1 to 11 of 11


 
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