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Search: Posts Made By: kyleservicetech
Forum: Electric Ducted Fan Jets 09-24-2017, 02:29 AM
Replies: 15
Views: 566
Posted By kyleservicetech
Don't fly EDF's anymore, but the one I did have...

Don't fly EDF's anymore, but the one I did have took 200 Watts per pound to fly well. At 169 square inches, and 2.5 pounds, that winds up at 34 ounces per square foot of wing area.

That 34 ounces...
Forum: General Electric Discussions 07-25-2017, 08:33 PM
Replies: 2,895
Views: 355,812
Posted By kyleservicetech
Yeah My 4500 Watt electric system, including...

Yeah
My 4500 Watt electric system, including its 12S3P A123 battery is about the same price as a 60 cc Twin cylinder gasser. And, it has about the same horsepower.
Forum: General Electric Discussions 07-25-2017, 05:43 PM
Replies: 2,895
Views: 355,812
Posted By kyleservicetech
Yeah A week ago, I put 5 flights on my giant...

Yeah
A week ago, I put 5 flights on my giant Electric model, while a fellow club member spent the afternoon trying to get his gasser to run right.

That's happened more than once.
Forum: General Electric Discussions 07-10-2017, 09:28 PM
Replies: 15
Views: 736
Posted By kyleservicetech
Yeah I made a unit like the Volt Magic monitor...

Yeah
I made a unit like the Volt Magic monitor some 8 years ago. Still have a few of them. It worked well, but like the Volt Magic unit, only let you know if your receiver voltage sagged below a...
Forum: General Electric Discussions 07-05-2017, 07:19 AM
Replies: 15
Views: 736
Posted By kyleservicetech
For me, I designed the "Voltsagger" project in...

For me, I designed the "Voltsagger" project in RCGroups a year or two ago. This unit monitors the receiver voltage, and as an added feature, records the number of flights on the model

Every one...
Forum: Batteries & Chargers 07-01-2017, 03:08 AM
Replies: 23
Views: 1,539
Posted By kyleservicetech
[QUOTE=dereckbc;1006975]143 Wh/Lb = 314 Wh/Kg. Me...

[QUOTE=dereckbc;1006975]143 Wh/Lb = 314 Wh/Kg. Me thinks you made a Brain Fart. ;)

QUOTE]


Yup, big brain fart! :oops: So used to the obsolete Pounds versus KiloGrams on this side of the big...
Forum: Batteries & Chargers 07-01-2017, 02:12 AM
Replies: 23
Views: 1,539
Posted By kyleservicetech
Lets put some real number in here. An 2500...

Lets put some real number in here.

An 2500 Mah A123 cell weighs exactly 0.074 Kg. At 3.3 Volts per cell times 2.5 Amp Hours per cell, that is 8.25 Watt Hours per cell. Divide by the weight, you...
Forum: Batteries & Chargers 06-30-2017, 07:15 AM
Replies: 23
Views: 1,539
Posted By kyleservicetech
Old 150% scratch built Electrostreak

Remember the original Electrostreak? That was the original electric model that actually flew pretty well, using 2400 Mah RC2400 Nicads, and a brush type motor. I built up three of them.

Some...
Forum: Batteries & Chargers 06-30-2017, 01:08 AM
Replies: 23
Views: 1,539
Posted By kyleservicetech
Yup A 4S 2500 mah A123 will put out a bit more...

Yup
A 4S 2500 mah A123 will put out a bit more power than a 3S LiPo on the same motor and prop.
Forum: Batteries & Chargers 06-29-2017, 03:45 AM
Replies: 23
Views: 1,539
Posted By kyleservicetech
Those A123's are about 35% more weight per...

Those A123's are about 35% more weight per horsepower hour than a LiPo. But, on the other hand, virtually zero fire hazard, no storage issues, very long life. They can be topped off after the day's...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 06-02-2017, 02:19 AM
Replies: 285
Views: 58,158
Posted By kyleservicetech
FYI, on my DX9 with an 9 channel receiver, just...

FYI, on my DX9 with an 9 channel receiver, just configure the model with dual flapperons, rudder, elevator and engine. The DX9 automatically assigns all servo channels, just plug in the servos by...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 06-01-2017, 09:11 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Yup, agreed.Read the last paragraph of my last...

Yup, agreed.Read the last paragraph of my last posting.

FYI, I go back to the days when the mean time between failure of the RC system was about 50 flights.
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 06-01-2017, 08:56 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Here in the USA, Spektrum is known for replacing...

Here in the USA, Spektrum is known for replacing a dumb thumbs crashed receiver with a brand new unit. N/C.

Last year, fellow club member bought a used Spektrum transmitter some 8 years old. The...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 06-01-2017, 05:30 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Now days, most name brand RC radios are pretty...

Now days, most name brand RC radios are pretty good. So, brand selection comes down to extra receiver pricing, out of warranty service and so on.For Spektrum, just about every transmitter they ever...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 06-01-2017, 05:41 AM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Seems HH went from a Dx6 Gen 2 to a DX6 Gen 3.

Seems HH went from a Dx6 Gen 2 to a DX6 Gen 3.
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-08-2017, 10:21 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Rephrased :D

Rephrased :D
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-08-2017, 04:43 AM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Someone check this out Isn't Spektrum capable...

Someone check this out
Isn't Spektrum capable of 11 or 22 ms???
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-08-2017, 01:29 AM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Yeah there was one troll last year who really...

Yeah
there was one troll last year who really panned Speki equipment, on and on and on.


Turned out the Only flying he ever did was with an RC simulater. He had never even owned an RC radio and...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-08-2017, 12:01 AM
Replies: 65
Views: 2,529
Posted By kyleservicetech
I have done a lot of testing on brownouts on my...

I have done a lot of testing on brownouts on my dozen or so Spektrum receivers, using my oscilloscope, and a "brownout" rig.

It takes a brownout exceeding one millisecond long to affect the...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-06-2017, 07:10 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Take a look at the Futaba web page on their Sbus...

Take a look at the Futaba web page on their Sbus installation. Their web page shows 14 servos powered by a single standard servo plug connection to their receiver.

Seems it would be better to...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-06-2017, 02:29 PM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Nowdays, most brand RC radios are pretty good. In...

Nowdays, most brand RC radios are pretty good. In the past 5 years or so, no one in my RC club has lost a model due to range or Spektrum issues.

Several years ago, I stopped a fellow club member...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 05-06-2017, 06:20 AM
Replies: 65
Views: 2,529
Posted By kyleservicetech
Just go to any large RC flyin. and note what...

Just go to any large RC flyin. and note what brand radios are being used. It will likely be mostly Spectrum. My RC club is 95% Spektrum. And a number of them have dumthumbed a model, pulled the...
Forum: Beginners 03-19-2017, 03:14 AM
Replies: 40
Views: 19,769
Posted By kyleservicetech
Hacker motors have always been near the top in...

Hacker motors have always been near the top in quality and performance. But, they are a lot of $$$$. There are a number of lower cost motors now days that also perform quite well. My Hackers run...
Forum: Beginners 03-16-2017, 03:28 AM
Replies: 40
Views: 19,769
Posted By kyleservicetech
This thread is 7 years old! FYI, I'm still...

This thread is 7 years old!

FYI, I'm still flying every Hacker motor I've ever bought
Forum: Power Systems 12-17-2016, 05:55 PM
Replies: 12
Views: 13,606
Posted By kyleservicetech
I am using a Rimfire 50 cc motor that turns a...

I am using a Rimfire 50 cc motor that turns a 22x10 prop at 7100 RPM, pulling 4500 Watts on a 12S3P A123 pack. That power system hauls a 20 pound model straight up out of sight.

After 105...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 12-12-2016, 07:26 AM
Replies: 12
Views: 1,444
Posted By kyleservicetech
I just updated my black DX9 transmitter. No...

I just updated my black DX9 transmitter. No problems what so ever.
Forum: Batteries & Chargers 12-04-2016, 06:48 AM
Replies: 23
Views: 3,952
Posted By kyleservicetech
Years ago, I tried building up a 5 Amp constant...

Years ago, I tried building up a 5 Amp constant current dummy electronic load using MosFets. And, succeeded in building a very good high power, 100 Kilohertz oscillator!

And, of course, that blew...
Forum: Batteries & Chargers 11-30-2016, 07:08 AM
Replies: 23
Views: 3,952
Posted By kyleservicetech
OK Sometimes it's difficult to determine how...

OK
Sometimes it's difficult to determine how knowledgeable a person is that posts in these websites.

At any rate, 1KW and even 2.5KW resistors are available. At a stiff price.
Forum: Batteries & Chargers 11-30-2016, 05:27 AM
Replies: 23
Views: 3,952
Posted By kyleservicetech
Go to www.digikey.com and search for: ...

Go to www.digikey.com and search for:

"FSE1000" This search will give a list of 1000 Watt resistors whose resistance varies from 0.25 to several Ohms.

Ar a reminder, Amps = Volts divided by...
Forum: Crash and Safety Forum 10-25-2016, 03:41 AM
Replies: 2,146
Views: 321,362
Posted By kyleservicetech
This is a true story that happened to me back in...

This is a true story that happened to me back in the mid 1980's with a Gentle Lady sailplane I had back then. Launch was by bungee, and the day was way to windy to fly.

So, went flying anyway,...
Showing results 1 to 30 of 500

 
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