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Search: Posts Made By: fhhuber
Forum: Beginners Today, 09:49 PM
Replies: 5
Views: 95
Posted By fhhuber
Accucell was a NiCd/NiMh charger

Accucell was a NiCd/NiMh charger
Forum: WWI Era Today, 09:48 PM
Replies: 1
Views: 6
Posted By fhhuber
http://www.internetmodeler.com/2001/may/new-releas...

http://www.internetmodeler.com/2001/may/new-releases/book_british-squadron.htm


Squadron aircraft designations.
Forum: Beginners Yesterday, 11:20 PM
Replies: 5
Views: 95
Posted By fhhuber
If it works there's nothing wrong with using the...

If it works there's nothing wrong with using the old radio. Still many thousands of 72mhz radios being used.

The battery information needed should be on the old battery. Typical of most 72 mhz...
Forum: Hi-Performance and Sailplanes 03-29-2015, 06:44 PM
Replies: 37
Views: 532
Posted By fhhuber
In the center? Thats the hub for holding the...

In the center? Thats the hub for holding the engine together and is covered by a spinner to reduce drag.

For subsonic a common rounded similar to P-51 spinner shape is fine... for supersonic the...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 03-29-2015, 06:05 PM
Replies: 13
Views: 221
Posted By fhhuber
My experience with supplying "excess" voltage (5...

My experience with supplying "excess" voltage (5 cell NiCd for 4.8v rated) to a servo says that isn't the issue. They either work or burn up very fast.

Most "4.8v rated" servos actually mean they...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 03-29-2015, 05:39 PM
Replies: 13
Views: 221
Posted By fhhuber
I've seen that symptom on a model before......

I've seen that symptom on a model before... turned out to be a bad extension. Wire broken inside the insulation. Digitals are more likely to display issues with something like that.

There have...
Forum: General Electric Discussions 03-29-2015, 05:29 PM
Replies: 25
Views: 316
Posted By fhhuber
Rudder is the one that typically needs more power...

Rudder is the one that typically needs more power than any other. Sometimes more than double any other surface.... especially on tail-draggers because when the tail-wheel contacts pavement or grass...
Forum: General Electric Discussions 03-29-2015, 05:18 AM
Replies: 25
Views: 316
Posted By fhhuber
It used to be common for these large models to...

It used to be common for these large models to use 2 RXs with 72 mhz. Not so common with the much more reliable 2.4ghz systems.

Also the splitting to 2 RXs split the servo loads to 2 batteries...
Forum: General Electric Discussions 03-29-2015, 05:12 AM
Replies: 1
Views: 76
Posted By fhhuber
Can't put in info on stuff I already know what...

Can't put in info on stuff I already know what the results should be in ECALC... without paying their fee.

So I have no idea how accurate it is.

The crippled free version just limits the...
Forum: General Electric Discussions 03-29-2015, 04:58 AM
Replies: 25
Views: 316
Posted By fhhuber
I've heard of the Snapper before... never...

I've heard of the Snapper before... never actually seen one. supposed to be 88 inch span and might be similar to a low wing Stick by AMR...
Forum: General Electric Discussions 03-29-2015, 12:50 AM
Replies: 25
Views: 316
Posted By fhhuber
Inadequate power servos start out needing more...

Inadequate power servos start out needing more power to attempt to do the job... when stalled a single standard servo can demand over 2 amps. That can overheat BEC's or regulators or it can deplete...
Forum: Vintage and old timer models 03-28-2015, 08:52 PM
Replies: 14
Views: 313
Posted By fhhuber
its pretty simple... the calculation tells you...

its pretty simple... the calculation tells you how to find a motor that turns the same prop the same RPM when doing a glow - electric conversion. From there you can look at the motor rating and find...
Forum: Vintage and old timer models 03-28-2015, 05:50 PM
Replies: 14
Views: 313
Posted By fhhuber
http://www.bphobbies.com/view.asp?id=V450327&pid=D...

http://www.bphobbies.com/view.asp?id=V450327&pid=D1748437

I'd go with this one... and use a folding prop on 2 cells 2000 to 2500 mah LiPo. that could take it up like a helicopter then fold for...
Forum: General Electric Discussions 03-28-2015, 04:10 PM
Replies: 25
Views: 316
Posted By fhhuber
You don't base servos on stall speed load... you...

You don't base servos on stall speed load... you base them on max potential load which is sudden full deflection at maximum speed.
Forum: General Electric Discussions 03-28-2015, 06:38 AM
Replies: 25
Views: 316
Posted By fhhuber
The "engineer/bombardier" idea of a second radio...

The "engineer/bombardier" idea of a second radio operating optional accessories is fine. Been done many times. Usually for larger and more complex aircraft, but nothing wrong with the idea here.
...
Forum: General Electric Discussions 03-28-2015, 06:28 AM
Replies: 5
Views: 150
Posted By fhhuber
Actually a fully open face cowl can mean very bad...

Actually a fully open face cowl can mean very bad airflow over the motor.

You need 3X the exit area as inlet.

Then you have to direct the moving air where it will actually go over the motor.
...
Forum: Warbird Electrics 03-28-2015, 06:24 AM
Replies: 5
Views: 160
Posted By fhhuber
6600 rpm/37v (10S * the normal "nominal" 3.7V of...

6600 rpm/37v (10S * the normal "nominal" 3.7V of a LiPo) = 178.4 rpm/v under load

Drop voltage to 22.2 (6S)... 22.2 * 178.4 = 3960 rpm appx expected under load.

In order to get power up to...
Forum: General Electric Discussions 03-28-2015, 05:03 AM
Replies: 5
Views: 150
Posted By fhhuber
Its more a question of if you are providing...

Its more a question of if you are providing adequate cooling. The motor will be fine at rated power if it has adequate cooling air going over and through it.

Its actually difficult to predict if...
Forum: General Electric Discussions 03-28-2015, 04:56 AM
Replies: 25
Views: 316
Posted By fhhuber
When dealing with this large of an aircraft I use...

When dealing with this large of an aircraft I use separate batteries for the RX.

My 50CC stick is 22 lb.

I use one of the Power Safe RXs in the EDF model in my Avatar pic (overweight,...
Forum: General Electric Discussions 03-28-2015, 04:30 AM
Replies: 25
Views: 316
Posted By fhhuber
I'd use one of the "Power Safe" Spektrum RXs. ...

I'd use one of the "Power Safe" Spektrum RXs.
http://www.horizonhobby.com/helicopters/aircraft-receivers/ar9110-9-channel-dsmx-powersafe-receiver-spmar9110

Main reason is the servo load will...
Forum: General Electric Discussions 03-27-2015, 10:28 PM
Replies: 12
Views: 212
Posted By fhhuber
Actually you should know EXACTLY what will...

Actually you should know EXACTLY what will happen.

The RX will go directly to its failsafe settings.

That will be whatever the TX positions were at bind for the simpler Spektrum RXs
...
Forum: Beginners 03-27-2015, 08:36 PM
Replies: 5
Views: 150
Posted By fhhuber
For the beast's expected flying style... (3D and...

For the beast's expected flying style... (3D and advanced aerobatics) I would expect trading off pitch would be better than reducing dia.

More disc area is important for hover.

consider the...
Forum: General Electric Discussions 03-27-2015, 08:26 PM
Replies: 12
Views: 212
Posted By fhhuber
JR vs Futaba issue... JR considers low...

JR vs Futaba issue...

JR considers low throttle to be one end of the pulse width and Futaba uses the opposite end, thus the servo direction and throttle are REVERSED. Futaba servos vs JR operate...
Forum: General Electric Discussions 03-27-2015, 05:11 PM
Replies: 12
Views: 212
Posted By fhhuber
You need to go through the process to reset the...

You need to go through the process to reset the "failsafe" of your
RX. That is often the binding sequence.

Binding Spektrum RXs at minimum throttle stick position, then doing servo reverse on...
Forum: Beginners 03-27-2015, 03:35 PM
Replies: 5
Views: 150
Posted By fhhuber
Should be about the same power as a .60 glow......

Should be about the same power as a .60 glow... and the "60e" indicates its about a .60 glow equivalent size aircraft.

The answer on the prop is... get a wattmeter and check power demand vs the...
Forum: Batteries & Chargers 03-27-2015, 09:10 AM
Replies: 6
Views: 118
Posted By fhhuber
Plug the battery into the model... run it down...

Plug the battery into the model... run it down using the motor. 5 to 10 minutes vs many many hours
Forum: Warbird Electrics 03-27-2015, 09:03 AM
Replies: 5
Views: 160
Posted By fhhuber
I think you are needing different packs. I'd go...

I think you are needing different packs. I'd go to a pair of 5S 8000 mah in series. (or 2 x 3S and a 4S... I kind of like to have lower cell count packs for cooling)

Pushing a 10S rated motor to...
Forum: General Electric Discussions 03-27-2015, 06:12 AM
Replies: 37
Views: 790
Posted By fhhuber
Only issue I have with hanging the fans...

Only issue I have with hanging the fans underneath is... you need landing gear to protect them. Kind of like he did.

But adding the gear adds more weight taking it further from trainer...
Forum: Electric Ducted Fan Jets 03-27-2015, 03:49 AM
Replies: 2
Views: 73
Posted By fhhuber
Any of the above... Dynam EDFs vary a bit. ...

Any of the above...

Dynam EDFs vary a bit. I've had 2 of their Me-262. first one was 100-110 mph straight from the box. Second barely made 80. Swapped the old EDFs into the new plane... 100+ ...
Forum: General Electric Discussions 03-27-2015, 12:28 AM
Replies: 66
Views: 899
Posted By fhhuber
1 inch pink foam between ceiling and roof will...

1 inch pink foam between ceiling and roof will make a HUGE difference.
Showing results 1 to 30 of 500

 
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