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Search: Posts Made By: dereckbc
Forum: General Electric Discussions 02-24-2015, 05:38 AM
Replies: 18
Views: 292
Posted By dereckbc
USA TV manufacturing died after WW-II. TV...

USA TV manufacturing died after WW-II. TV manufacturing went to Japan. Now Japan has lost it to China.

Story is the same. USA wages, taxes, and employment policies became too expensive. Japan...
Forum: General Electric Discussions 02-24-2015, 05:30 AM
Replies: 18
Views: 292
Posted By dereckbc
Electronic Component stores died a long time ago...

Electronic Component stores died a long time ago with Bench Technicians. I am a ham radio operator and electrical/electronic engineer. In my college days and early career I fixed a lot of commercial...
Forum: Humor 02-20-2015, 10:20 PM
Replies: 16
Views: 2,002
Posted By dereckbc
Chinese Lanterns can stir up quit a bit of chaos...

Chinese Lanterns can stir up quit a bit of chaos and fun. Done in the right places you can get F16 USAF jets to scramble and fly over, and cops chasing lights in the sky with sirens blasting...
Forum: Electric Ducted Fan Jets 02-17-2015, 01:27 AM
Replies: 39
Views: 712
Posted By dereckbc
The scale just changes and means you need a real...

The scale just changes and means you need a real accurate DMM that can measure very small voltages accurately. You are getting into Fluke meters and away from Harbor Fright, Craftsman, and Chi-Com...
Forum: Electric Ducted Fan Jets 02-16-2015, 10:52 PM
Replies: 39
Views: 712
Posted By dereckbc
Was just an example. Just use Google or whatever...

Was just an example. Just use Google or whatever search engine you like and search for 100 AMP Shunt...
Forum: Electric Ducted Fan Jets 02-16-2015, 09:07 PM
Replies: 39
Views: 712
Posted By dereckbc
Hall effect Transducers are good when operating...

Hall effect Transducers are good when operating at full scale, but not so much on say 10 amps on a 100 amp scale. Close enough for what most want to know, but if precision is desired and within...
Forum: Electric Ducted Fan Jets 02-16-2015, 09:04 PM
Replies: 39
Views: 712
Posted By dereckbc
A Shunt is what is built into a watt meter or can...

A Shunt is what is built into a watt meter or can be external.

A Shunt is nothing more than a precision high power resistor, that develops 50 millivolts at full scale. For example a 50 amp shunt...
Forum: Electric Ducted Fan Jets 02-16-2015, 08:10 PM
Replies: 39
Views: 712
Posted By dereckbc
OK for a quick check, but does not read watts....

OK for a quick check, but does not read watts. You would need a volt meter to get that part.

I was just Stumped when someone mentioned Balance Batteries with a Watt Meter. Does not make since to...
Forum: Electric Ducted Fan Jets 02-16-2015, 07:35 PM
Replies: 39
Views: 712
Posted By dereckbc
Clamp meters are not real accurate and does not...

Clamp meters are not real accurate and does not measure voltage to extract watts or capable of measuring watt and amp hours. Only way to do wither accurately is with an In-Line meter that uses a...
Forum: Electric Ducted Fan Jets 02-16-2015, 01:29 AM
Replies: 39
Views: 712
Posted By dereckbc
OK being an EE I gotta ask what the BALANCE...

OK being an EE I gotta ask what the BALANCE FEATURE is on a watt meter. Does not make since to me right now. I am missing something. Balance to me is what a charger does, not a in-line watt meter.
Forum: UAV / FPV 02-15-2015, 05:24 AM
Replies: 6
Views: 214
Posted By dereckbc
Sorry did not mean it like it sounded, just...

Sorry did not mean it like it sounded, just frustration. Quads are giving the hobby a bad name lately. The general public and Big Brother view them as a threat to National Security and Privacy.
...
Forum: UAV / FPV 02-14-2015, 02:59 AM
Replies: 6
Views: 214
Posted By dereckbc
Another reason to ban RC Flying.

Another reason to ban RC Flying.
Forum: Batteries & Chargers 01-10-2015, 01:16 AM
Replies: 23
Views: 489
Posted By dereckbc
Simple throw them away and get a new ones. You...

Simple throw them away and get a new ones. You cannot work with Aluminum. That is why manufactures switched to prevent you from doing what you want to do.

Having said that you got nothing to...
Forum: Batteries & Chargers 01-09-2015, 11:36 PM
Replies: 9
Views: 210
Posted By dereckbc
As I have said in another thread I have another...

As I have said in another thread I have another expensive hobby, EV's. I have built a couple of racing type golf carts.

Ev guys don't use C-Rates to compare batteries because as you have...
Forum: Batteries & Chargers 01-09-2015, 11:27 PM
Replies: 9
Views: 210
Posted By dereckbc
No lower C rating would mean more Ri which means...

No lower C rating would mean more Ri which means more energy wasted as heat.
Forum: Beginners 01-09-2015, 02:33 AM
Replies: 70
Views: 1,114
Posted By dereckbc
Apprentice S 15E hands down the easiest to fly....

Apprentice S 15E hands down the easiest to fly. It is so good I did not use an Instructor although I do not advise doing that.

The Gyro receiver in Beginner mode makes it very hard to crash, and...
Forum: Batteries & Chargers 01-04-2015, 09:50 PM
Replies: 8
Views: 259
Posted By dereckbc
That maybe the case, but when you do that CG...

That maybe the case, but when you do that CG becomes more difficult to manage, and will shift the CG higher in the fuselage which could make your plane want to roll or fly inverted. It is all about...
Forum: Batteries & Chargers 01-04-2015, 08:35 PM
Replies: 8
Views: 259
Posted By dereckbc
Regardless of which battery chemistry, there is a...

Regardless of which battery chemistry, there is a direct relationship between capacity and weight/volume. Think of it like 1 liter of water is going to weigh 1 Kilogram or 1 gallon of water it is...
Forum: Batteries & Chargers 01-02-2015, 05:53 PM
Replies: 32
Views: 727
Posted By dereckbc
Yep 50 mph, and i have the speed restricted via...

Yep 50 mph, and i have the speed restricted via the controller by limiting RPM @ 5000 rpm on a 7000 rpm motor. Yep it has seat belts and Scardy Cat Handles to hang onto. .

No Sir LiPo in excess of...
Forum: Batteries & Chargers 01-02-2015, 04:06 AM
Replies: 32
Views: 727
Posted By dereckbc
Dennis, I have another expensive hobby, EV's....

Dennis, I have another expensive hobby, EV's. Nothing big or too fancy, even a little silly, racing golf cart. Well I could race it as not many golf carts can do what mine will like go 50 mph. May...
Forum: Batteries & Chargers 12-26-2014, 10:56 PM
Replies: 32
Views: 727
Posted By dereckbc
My bad did not catch that part. :oops:

My bad did not catch that part. :oops:
Forum: Batteries & Chargers 12-26-2014, 08:51 PM
Replies: 32
Views: 727
Posted By dereckbc
Not saying that will not work, but safety comes...

Not saying that will not work, but safety comes to my mind. The nichrome wire made for that hair dryer is only rated for around 10 amps max. I would worry about the wire fusing and catching something...
Forum: Batteries & Chargers 12-24-2014, 10:57 PM
Replies: 32
Views: 727
Posted By dereckbc
The heating element in the hair drier is a...

The heating element in the hair drier is a RESISTOR. Problem is the resistor is designed for 120 volts. So if the wattage is, then Resistance is::

1500 watts R = 9.6 Ohms
1200 watts R = 12.0 Ohms...
Forum: Delta & Flying Wings 12-24-2014, 05:14 AM
Replies: 2
Views: 258
Posted By dereckbc
Interesting, I did not think you could still get...

Interesting, I did not think you could still get Estes Rocket engines. I built a ton of rockets as a kid.
Forum: Batteries & Chargers 12-24-2014, 01:22 AM
Replies: 46
Views: 585
Posted By dereckbc
Nah .22. Pelet gun unless hunting class wont...

Nah .22. Pelet gun unless hunting class wont penetrate. Nail gun works too.
Forum: 3D Flying 12-23-2014, 10:10 PM
Replies: 16
Views: 460
Posted By dereckbc
FWIW I am a 56 year ole dog, started flying two...

FWIW I am a 56 year ole dog, started flying two years ago and started 3D 6 months ago so here is my take

First maneuver to master in the Harrier. From there everything is easier as just about all...
Forum: General Electric Discussions 12-23-2014, 05:38 AM
Replies: 16
Views: 481
Posted By dereckbc
Would be nice if law was the only thing they are...

Would be nice if law was the only thing they are ignorant about.

True story.

Last year my wife's boss wanted to bring his 12 year old kid out and try his hands on an RC plane. I arranged to...
Forum: General Electric Discussions 12-21-2014, 05:21 PM
Replies: 16
Views: 481
Posted By dereckbc
AMA is a Non Profit Organization. That in no way...

AMA is a Non Profit Organization. That in no way means it cannot make a profit, it just means any profit goes into its programs like hiring lawyers and lobbyist to go to Washington to protect our...
Forum: General Electric Discussions 12-20-2014, 08:35 PM
Replies: 16
Views: 481
Posted By dereckbc
It Is Time

First I am not an officer/agent/rep of the AMA or any RC Club. I am just a member of AMA and my local club who loves and supports the hobby.

If is time to renew your AMA membership, and it is even...
Forum: Humor 12-17-2014, 08:51 PM
Replies: 8
Views: 416
Posted By dereckbc
Do they have young daughters?

Do they have young daughters?
Showing results 1 to 30 of 398

 
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