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Search: Posts Made By: redgiki
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Forum: Foamies
07-11-2008, 07:52 PM
Replies: 63
Views: 13,618
Posted By redgiki

I ran a GWS piezo rate gyro on the rudder of my...

I ran a GWS piezo rate gyro on the rudder of my ParkZone Typhoon for years. Worked great. My main goal was to stabilize the rudder to help avoid weathervaning due to high winds in my area.

The...
07-11-2008, 06:15 PM
Replies: 150
Views: 13,406
Posted By redgiki

I really appreciate the tip regarding going ahead...

I really appreciate the tip regarding going ahead and plugging a dummy Dean's end in while soldering! It's dramatically improved the usability of my Dean's plugs after soldering. No tough fits, no...
07-10-2008, 09:14 PM
Replies: 63
Views: 7,040
Posted By redgiki

Yeah, I put up a Stryker and a balsa F-18 in...

Yeah, I put up a Stryker and a balsa F-18 in 35MPH winds on the slope one day (anemometer at the slope). They flew fine, but bringing them down in that kind of wind is troublesome if it's gusty.
...
07-10-2008, 09:00 PM
Replies: 59
Views: 7,816
Posted By redgiki

I'm with Red S. Ultimately, it boils down to: ...

I'm with Red S. Ultimately, it boils down to:
* Not balancing
* Over-discharging (running too long)
* Over-amping
* Over-charging

If you set your timer to use 80% or less of the total...
07-10-2008, 07:20 PM
Replies: 188
Views: 53,057
Posted By redgiki

This looks an awful lot like the E-Flite P-47D as...

This looks an awful lot like the E-Flite P-47D as far as it comes to quality. It was a great-flying bird, but maintenance was a real chore due to wing panels that came off easily, landing gear that...
07-01-2008, 09:34 PM
Replies: 12
Views: 5,770
Posted By redgiki

I have just about scrapped the idea of using...

I have just about scrapped the idea of using NiMH/NiCD batteries for receiver packs. A two-cell pack of A123 cells (either 1100mAh for smaller stuff, or 2300mAh for larger stuff) has just the right...
07-01-2008, 09:31 PM
Replies: 27
Views: 6,476
Posted By redgiki

I think it would be more accurate to say that...

I think it would be more accurate to say that they fly as if they are 2900mAh to 3200mAh-ish 30C LiPos. You don't need to reserve capacity to keep from damaging them due to over-discharge like you...
07-01-2008, 05:27 PM
Replies: 4
Views: 2,324
Posted By redgiki

Sorry to resurrect a dead thread... ...

Sorry to resurrect a dead thread...



Yep, and you can pick up the 1100mAh A123 cells from the Black & Decker VPX tools.

As I expected, prices on 36V packs rose substantially over the past...
07-01-2008, 04:52 PM
Replies: 31
Views: 5,298
Posted By redgiki

Apogee is the only vendor I know of who advocates...

Apogee is the only vendor I know of who advocates break-in on their packs with specific instructions on how to do so. That said, I've maintained for a long time that Lipos clearly do develop more...
07-01-2008, 08:19 AM
Replies: 27
Views: 6,637
Posted By redgiki

My A123 trainer setup is currently four 3S packs...

My A123 trainer setup is currently four 3S packs wired as two 3S2P packs in serial. When I charge, I disconnect the serial adapter, connect a parallel adapter instead, and charge all four packs in...
06-17-2008, 10:25 PM
Replies: 27
Views: 6,637
Posted By redgiki

Straub: I've been flying my trainer on 3S2P A123...

Straub: I've been flying my trainer on 3S2P A123 for a couple of weeks. With a higher-Kv motor -- like 1200-1500 -- you can swing a 12x8 or 13x8 prop and get nice trainer-like performance for around...
05-05-2008, 11:55 PM
Replies: 58
Views: 19,851
Posted By redgiki

Absolute easiest: Buy pre-made packs from...

Absolute easiest: Buy pre-made packs from A123racing.com. Buy a Sonic Charger. Plan for 2S or 3S setups exclusively. Done.
Easy: Buy a charger that can handle A123, or upgrade the firmware on...
05-05-2008, 10:03 PM
Replies: 58
Views: 19,851
Posted By redgiki

I could be wrong, but from my research so far, it...

I could be wrong, but from my research so far, it seems there are not many LiPo manufacturers (not pack assemblers) in the world that make cells appropriate for model aircraft usage. These are the...
12-06-2007, 01:34 AM
Replies: 14
Views: 2,599
Posted By redgiki

I feel the need to chime in, as a consumer of a...

I feel the need to chime in, as a consumer of a lot of these batteries.

These are 75-150 cycle batteries. Most people who don't abuse them get about 100 flights; those who abuse them get less...
12-05-2007, 01:37 AM
Replies: 9
Views: 4,038
Posted By redgiki

Found it! In Dave Gee's column, "Safety Comes...

Found it! In Dave Gee's column, "Safety Comes First", in the September 2007 Model Aviation magazine, page 100, there is a picture of this charging station.

Caption: "The Valley RC Flyers club...
11-28-2007, 11:38 PM
Replies: 21
Views: 20,427
Posted By redgiki

If stored too warm with a full charge, you will...

If stored too warm with a full charge, you will lose capacity. I demonstrated this unintentionally this summer on a brand-new LiPo. I stored it fully-charged for six months in a hot garage, and...
11-28-2007, 01:10 AM
Replies: 9
Views: 4,038
Posted By redgiki

Ooh, I like the alligator clip idea! We are...

Ooh, I like the alligator clip idea!

We are in the midst of our first good snowstorm of the year, so I may be delaying the start of the project for a few months. Having a nice outdoor charging...
11-24-2007, 08:13 PM
Replies: 9
Views: 4,038
Posted By redgiki

Well, it looks like few to no people have done...

Well, it looks like few to no people have done this before. Guess I get to build it and photo-document my progress so other people don't have the growing pains I'll have!
11-22-2007, 01:45 AM
Replies: 9
Views: 4,038
Posted By redgiki

Building a field charging station?

My club was recently donated a generator to keep locked up in the clubhouse. What a relief! We've had many a jump-start at the field from people charging their packs using their car batteries.
...
09-09-2007, 06:20 AM
Replies: 12
Views: 1,746
Posted By redgiki

The principal physical differences between a 12C...

The principal physical differences between a 12C and a 20C cell are:
* The 20C has a thinner separator (electrolyte) than the 12C.
* The 20C has a different formulation than the 12C (slightly...
09-08-2007, 11:13 PM
Replies: 12
Views: 1,746
Posted By redgiki

Huh, my car actually *does* get 57MPG on the...

Huh, my car actually *does* get 57MPG on the highway at around 65MPH, and around 55MPG on the street...

Anyway, the C-rating has several assumptions which we in RC applications don't share:
*...
09-08-2007, 11:06 PM
Replies: 6
Views: 1,111
Posted By redgiki

To have something with similar weight and current...

To have something with similar weight and current carrying capacity compared to your NiMH battery, you need a bigger LiPo than 800mAh. Try closer to a minimum of 1300 to a maximum of around 2200. ...
09-04-2007, 12:46 AM
Replies: 4
Views: 2,324
Posted By redgiki

Heh, they had the last two kits on sale for $399,...

Heh, they had the last two kits on sale for $399, down from $699 retail.

I bought them. Holy shimole, these tools are way stronger than my Ryobi 18v stuff. I couldn't saw through a 4-inch board...
09-03-2007, 08:13 PM
Replies: 4
Views: 2,324
Posted By redgiki

Home Depot drops DeWalt 36V line?

According to my local Home Depot, the reason their selection of DeWalt 36V tools is so anemic (just a hammer drill/reciprocating saw combo kit) is because they were not selling well. They were --...
09-03-2007, 04:24 PM
Replies: 19
Views: 5,183
Posted By redgiki

Whoever wrote the description simply didn't know...

Whoever wrote the description simply didn't know what s/he was talking about. Lower head speeds buy you longer flight duration, batteries which last more cycles, and a more sluggish helicopter which...
08-21-2007, 06:22 PM
Replies: 1,072
Views: 67,928
Posted By redgiki

Me, too post...

I tend to hate "me too" posts, but this little RTF looks like a lot of indoor fun (or outdoors on no-wind days). And I know from owning a lot of Parkzone planes that -- in general -- they tend to...
Forum: Power Systems
07-17-2007, 10:09 PM
Replies: 4
Views: 1,308
Posted By redgiki

Well, you need to be aware that the batteries...

Well, you need to be aware that the batteries won't develop their full power for a few cycles. Limit your flight times and try to avoid pushing them to the limit for the first few flights, and...
Forum: 3D Flying
07-17-2007, 10:06 PM
Replies: 156
Views: 41,608
Posted By redgiki

The ParkZone Typhoon has a known problem with the...

The ParkZone Typhoon has a known problem with the stock ESC where the motor can stall at very slow speeds and refuse to spin up despite advancing the throttle. If allowed, it can -- and will -- fry...
Forum: ParkFlyers
07-17-2007, 10:01 PM
Replies: 23
Views: 2,881
Posted By redgiki

Why not control line? Tiny motor, all kinds of...

Why not control line? Tiny motor, all kinds of fun stuff you can do with it, and it flies perfectly in a cul-de-sac.

Control-line aerobatics isn't dead... it's just sleepy :)
07-17-2007, 09:58 PM
Replies: 13
Views: 1,813
Posted By redgiki

I treat the C rating as the "cool" rating: higher...

I treat the C rating as the "cool" rating: higher runs cooler. A 30C sustained discharge == 2 minutes of flight. Pretty useless for anything besides a hotliner or powered sailplane. Set your bird...
Showing results 1 to 30 of 500
 


 
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