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Old Oct 06, 2012, 02:21 PM
Do Da Dippidy
plowboy1966's Avatar
Joined Jun 2008
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Cold, wet and windy here. No maiden today! Hopefully tomorrow will be better. I hope some of you are getting some flying in.
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Old Oct 06, 2012, 02:25 PM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
7,226 Posts
Quote:
Originally Posted by DaOldGuy View Post
I am hoping there was a typo in this line someplace.

There is no advantage I know of to stalling a servo or getting "Blow Back" of a surface. Either of these events happening causes very high amp draw and can cause brown outs / shorten a servo life dramatically.

Speed and Centering is a high priority, at least to me. Its like 72Mhz verses 2.4. With 72 the transmission is slower so often you are "chasing" the control, doing things in advance to comp for the latency. The next step is to take that latency of of the servo so slight move happen more real time. Hovering is a good example of fast minor corrections. If you are always a half move behind the needed correction, the chase is on.
I am saying if your existing servos can't hold the deflection, then stronger servos are worth it and have an advantage.
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Old Oct 06, 2012, 02:27 PM
BANG IT!!!
DaOldGuy's Avatar
United States, PA, Bellefonte
Joined Dec 2007
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Originally Posted by plowboy1966 View Post
Cold, wet and windy here. No maiden today! Hopefully tomorrow will be better. I hope some of you are getting some flying in.
We are in that same FUNK here... Nasty... Wife is planning a party here tonight, help her, working on a Large Scale Airplane Mall Expo.

The "Perfect RC Wives" <Jenny, Amber, Leah> will all be here playing cards with 5 others while Jon, Arron, and myself will be exiled to Jon's house for the event.
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Old Oct 06, 2012, 02:31 PM
Cookies Good - Bacon Better
NoMatta's Avatar
Portland, Oregon
Joined Sep 2008
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Warm and dry here, PLow - no rain projected for at least a week.
Guess ya left too soon. .. Wind is only 18 mph
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Old Oct 06, 2012, 02:47 PM
BANG IT!!!
DaOldGuy's Avatar
United States, PA, Bellefonte
Joined Dec 2007
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Originally Posted by NoMatta View Post
Warm and dry here, PLow - no rain projected for at least a week.
Guess ya left too soon. .. Wind is only 18 mph
Only?
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Old Oct 06, 2012, 02:49 PM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
7,226 Posts
Low torque digitals are fine as long as you only need low torque on the plane.

72MHz vs 2.4GHz - Just RF frequencies.

The real difference is in the data modes. As the computers have improved, new communications modes. Frequency hopping started in amateur radio quite some time ago.

Sometimes the frequencies used are just a matter of the FCC and world frequency allocations for various purposes which, in part, is based on the band-width of the data modes used.

In general, as the data rates increase, the bandwidth increases. Dealing with a channelized band, there are restrictions to how much you can increase band-width before you have channel to channel interference.

The multi-frequency modes needed a new home that would allow the systems to use the multiple frequencies with out interference with each other.

Anyway, sometimes people don't realize that a lot of what is considered in th 2.4GHz systems have nothing to do with the frequency.

I still have 72MHz capability but it is getting more and more impractical to use it.
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Old Oct 06, 2012, 02:54 PM
Do Da Dippidy
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Joined Jun 2008
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Originally Posted by NoMatta View Post
Warm and dry here, PLow - no rain projected for at least a week.
Guess ya left too soon. .. Wind is only 18 mph
Did you see the pics of the fire at the field?! Chuck sent me one, it looks bad!

Wish I could have left there sooner!!! Enjoy your moment in the sun, it won't last!
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Old Oct 06, 2012, 04:07 PM
BANG IT!!!
DaOldGuy's Avatar
United States, PA, Bellefonte
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Quote:
Originally Posted by waynemia View Post
Low torque digitals are fine as long as you only need low torque on the plane.

72MHz vs 2.4GHz - Just RF frequencies.

The real difference is in the data modes. As the computers have improved, new communications modes. Frequency hopping started in amateur radio quite some time ago.

Sometimes the frequencies used are just a matter of the FCC and world frequency allocations for various purposes which, in part, is based on the band-width of the data modes used.

In general, as the data rates increase, the bandwidth increases. Dealing with a channelized band, there are restrictions to how much you can increase band-width before you have channel to channel interference.
Bandwidth and Resolution seems to be the drivers that are really increasing with these products. Radio resolution really helps take advantage to the digital servo for more refine movements. Freq is just the carrier... Not a lot of people bother to look beyond that to Wayne's point.

My buddies Turbine Jet, doesnt need a lot of through, a lot of torque, but fair speed and accurate centering are key. A trainer plane just needs enough torque to carry and speed and centering are not critical.

I got to see a set of servos in a large scale plane, very very strong and fast digital servos. The amazing part.... They were silent, even under a load, nother but hinge is heard.
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Old Oct 06, 2012, 04:25 PM
Registered User
United States, MI, Houghton
Joined Jan 2005
5,377 Posts
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Originally Posted by DaOldGuy View Post
hinge is heard.
Did it squeak loudly like it needed oil? Sorry, this close to Halloween.........couldn't resist! Non-sequitur and all that, don't you know.
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Old Oct 06, 2012, 05:06 PM
BANG IT!!!
DaOldGuy's Avatar
United States, PA, Bellefonte
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Originally Posted by snowman View Post
Did it squeak loudly like it needed oil? Sorry, this close to Halloween.........couldn't resist! Non-sequitur and all that, don't you know.
No squeaky you hob goblin imatation snowy wonder....Silence! <the servo, not you>
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Old Oct 06, 2012, 06:58 PM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
7,226 Posts
Well, a friend of mine is extracting the alcohol from gasoline. He is hoping to have less troubles with his gas engines.
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Old Oct 06, 2012, 07:03 PM
Do Da Dippidy
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What does he do with the alcohol? Couldn't we bottle it and call it Fuel?
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Old Oct 06, 2012, 07:20 PM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
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Originally Posted by plowboy1966 View Post
What does he do with the alcohol? Couldn't we bottle it and call it Fuel?
Put it in brown jugs and call it moonshine.
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Old Oct 06, 2012, 07:49 PM
Do Da Dippidy
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Put it in brown jugs and call it moonshine.
Ethyl!!
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Old Oct 06, 2012, 08:10 PM
A trail of smoke is GOOD!
waynemia's Avatar
USA, TX, Springtown
Joined May 2008
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Originally Posted by plowboy1966 View Post
Ethyl!!
If she is working.
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