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Showing results 1 to 19 of 19
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Search: Posts Made By: RodJim
Forum: FMA Direct 02-10-2012, 12:17 AM
Replies: 2
Views: 1,752
Posted By RodJim
Question Batteries

I am happy to see FMA still in the battery business. Having said that why does FMA not make some smaller cells -- 850 mah, 1350 mah, or 1700 mah. I purchased some 1700 cells last year and am very...
Forum: Batteries & Chargers 03-03-2009, 03:51 PM
Replies: 4
Views: 1,232
Posted By RodJim
FMA Charger

I have 2 Cellpro 4S chargers and in my opinion they are second to none. They are simple to operate and havve given me excellant service for about 2 years now. I have recommended them to several of my...
Forum: Power Systems 03-14-2007, 03:13 PM
Replies: 15
Views: 2,753
Posted By RodJim
Bert, I hope this picture comes through, it might...

Bert, I hope this picture comes through, it might better explain how I make sure that the prop does not slip.
Forum: Power Systems 03-13-2007, 11:21 PM
Replies: 15
Views: 2,753
Posted By RodJim
bert269, I cut a piece of self stick sandpaper...

bert269, I cut a piece of self stick sandpaper the size of the prop driver ( the part that the prop comes in contact with), cut a hole so that the shaft will pass through it, and stick it on. The...
Forum: General Electric Discussions 03-12-2007, 02:08 PM
Replies: 10
Views: 960
Posted By RodJim
If you use a tach indoors, you must use a strong...

If you use a tach indoors, you must use a strong DC light source to shine through the rotating prop. Electric power in North America is generally operating on a 60 cycle/second frequency. If you hold...
Forum: Power Systems 03-12-2007, 01:57 PM
Replies: 15
Views: 2,753
Posted By RodJim
I cut out a round piece of self sticking...

I cut out a round piece of self sticking sandpaper and stick it on the prop drive. This will stop the prop from rotating (sliding), when you are trying to tighten the prop.
Forum: Power Systems 11-25-2006, 08:23 PM
Replies: 10
Views: 2,643
Posted By RodJim
I would advise keeping the amp draw to 10 amps or...

I would advise keeping the amp draw to 10 amps or less with a Speed 400 motor.
Forum: Power Systems 11-25-2006, 06:28 PM
Replies: 10
Views: 2,643
Posted By RodJim
In reply to your question re too high a voltage...

In reply to your question re too high a voltage for a 380, yes a 3 S voltage is 11.2 volts which could push the amp draw higher tha a 380 can handle. Did you use a Whatt meter to check the amps youe...
Forum: Power Systems 11-10-2006, 07:04 PM
Replies: 20
Views: 2,926
Posted By RodJim
MotoCalc

:) I find that MotoCalc is an excellent way to get started when fitting a motor to an airframe. Although I find that MC tends to be conservative in its recommendations, it does point you in the right...
Forum: Events, Shows and Fun Fly's - Electric Airplanes 06-04-2006, 10:22 PM
Replies: 0
Views: 976
Posted By RodJim
Smile Kelowna Electric Fly In

Kelowna Ogopogo Radio Controllers will be hosting it's Electric Fly In on June 10 & June 11. We offer dry camping and will have a food concession operating both days. We have a bunch of prizes to...
Forum: General Electric Discussions 04-17-2006, 03:31 PM
Replies: 23
Views: 1,954
Posted By RodJim
Lt - 25

You can build the LT-25 almost as stock . Before you start the fuselage decide how you are going to mount your motor and make early alterations to accomodate your particular motor -- do you want it...
Forum: General Electric Discussions 04-16-2006, 09:26 PM
Replies: 23
Views: 1,954
Posted By RodJim
Lt-25

You will enjoy the LT-25. I built mine back in the "90's and I am still flying it. I have recovered it once as the sun here bleached the covering and made it very brittle. The only major change I...
Forum: Batteries & Chargers 04-05-2006, 12:02 AM
Replies: 7
Views: 1,115
Posted By RodJim
Li-Po Shelf life

I have stored a pair of 3S Polyquest batteries for about 18 months (forget exactly how long -- but as I received them from the hobby shop), and just charged them. I charged tham at a c/10 rate for...
Forum: Power Systems 03-28-2006, 06:43 PM
Replies: 42
Views: 5,065
Posted By RodJim
The Esskay 400XT should be proped for a maximum...

The Esskay 400XT should be proped for a maximum draw of 10 amps. A 12x6 on a 3S pack is asking too much from this motor unless you like smoke rings coming from your motor.
Forum: WWI Era 02-24-2006, 01:15 AM
Replies: 6
Views: 1,667
Posted By RodJim
DR - 1 power

I would suggest you try MotoCalc http://www.motocalc.com/ for a month (free for 1 month), and this program will help you select a power system. The other way is to assume that you need 60 - 70 watts...
Forum: General Electric Discussions 02-24-2006, 01:01 AM
Replies: 10
Views: 1,179
Posted By RodJim
Reverse timing

If you can loosen up the back plate that holds the brushes, connect an ammeter to the motor lead and rotate the end plate till you get the lowest amp reading. Then rotate the end plate opposite to...
Forum: Power Systems 02-24-2006, 12:54 AM
Replies: 7
Views: 1,144
Posted By RodJim
400 motor

If it is a 7.2 volt - 400 you will be OK. Just watch the amps. It should handle 10 amps, but more and you may have a short life. I would not try it with a 6 volt - 400.
Forum: Electric Ducted Fan Jets 01-18-2006, 09:41 PM
Replies: 20
Views: 3,028
Posted By RodJim
Outrunner vs Geared Inrunner

I guess I am one of those guys that does not agree with the statement that Outrunners are better than a geared Inrunner. While I agree that the Outrunner is a simpler installation than a geared...
Forum: Power Systems 11-21-2005, 07:01 PM
Replies: 10
Views: 1,465
Posted By RodJim
Rascal - Li-Po or NiMH

Frank, I have flown the Rascal C for a number of years on an 8 cell 950 mah Kan battery and have been happy withthe performance. I have a 2:1 geared Speed 400 and use a 9x4.5 or 9x6 APC E prop. I...
Showing results 1 to 19 of 19

 
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