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Search: Posts Made By: credence
Showing results 1 to 25 of 500
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Forum: Electric RC Helis
02-13-2008, 05:18 PM
Replies: 358
Views: 49,011
Posted By credence

RE: My Hurricane 550's first Hover

The Lepton and T-rex 500 are smaller, just so you're aware. They're more like a larger 450 size heli rather than a smaller .50 like the E550 is. I'd consider the E550 a true ".30" class bird, with...
Forum: Electric RC Helis
02-06-2008, 10:18 PM
Replies: 358
Views: 49,011
Posted By credence

RE: My Hurricane 550's first Hover

The T-rex 600 has "presence" in the air when you fly it. It's a bigger and heavier model so it feels more substantial in movement. That's not to say it can't snap around like crazy, as it certainly...
Forum: RC Helicopter General Discussions
01-25-2008, 03:55 PM
Replies: 4
Views: 1,357
Posted By credence

RE: I want a 15 size heli, whats good out there?

You might want to have a look at the Century Hawk Pro .30.

It's pretty much in the price range you're looking for and is an excellent learning machine if nitro is a route you want to do.

...
Forum: RC Helicopter General Discussions
01-23-2008, 12:25 PM
Replies: 4
Views: 781
Posted By credence

RE: Lead acid batteries charge ?

Most lead acid batteries work best with low charge currents.

300 - 600 mA is about the norm.
Forum: T-Rex heli
01-20-2008, 10:30 AM
Replies: 16
Views: 1,196
Posted By credence

RE: 16c Battery Too Tame?

The C Rating determines the cells maximum continuous discharge capability. A higher C rating means the battery can be discharged at a higher current rate without damage to the battery. However, if...
Forum: T-Rex heli
01-11-2008, 04:02 PM
Replies: 16
Views: 2,488
Posted By credence

RE: Batteries for TREX 500

Certain batteries, like the electrifly packs, have their own built in protection circuit, and so have dedicated leads, one for charging one for discharging.

I'm not sure what would happen on...
Forum: Electric RC Helis
01-01-2008, 10:06 PM
Replies: 7
Views: 1,172
Posted By credence

RE: How do you DISPOSE of a Lipo pack?

Salt water only neutralizes a lipo if the interior of the cell is exposed to it. Simply placing the batteries into a bucket of salt water will only corrode and eventually dissolve the tabs on the...
Forum: RC Helicopter General Discussions
01-01-2008, 01:39 AM
Replies: 18
Views: 1,869
Posted By credence

RE: Is nitro worth the trouble?

For larger machines, it can be cheaper (up front) than electric. You also get the benefit of refuel and fly convenience instead of waiting for batteries to charge so it can be better for learning and...
Forum: T-Rex heli
12-31-2007, 06:02 PM
Replies: 6
Views: 1,508
Posted By credence

RE: Why do they call it a 450? (strange question)

I suspect marketing probably has something to do with it as well. The general uneducated buyer will see "400 vs 450" and think to them self, well, 450 is higher than 400, so it must be better! [:-]
Forum: T-Rex heli
12-31-2007, 12:16 PM
Replies: 6
Views: 1,508
Posted By credence

RE: Why do they call it a 450? (strange question)

Generally refers to the motor size/class. They're referred to as "400" size helicopters because they use speed 400 class motors, a naming convention that was started I think by graupner with brushed...
Forum: RC Helicopter General Discussions
12-30-2007, 10:50 AM
Replies: 2
Views: 816
Posted By credence

RE: PC Power Supply

PC Power supplies have huge differences in output ratings. Any produced within the last 5 years though would probably be more than enough to power a charger. You need to look at the side or bottom of...
Forum: Electric RC Helis
12-24-2007, 01:48 AM
Replies: 1
Views: 852
Posted By credence

RE: Twister Skylift : Why quad rotors ??

My guess is for the added stability. The use of the contra-rotating blades might also negate some of the more sophisticated mixing electronics you need for a typical tandem heli bird.

If you...
Forum: Electric RC Helis
12-22-2007, 08:13 PM
Replies: 2
Views: 768
Posted By credence

RE: ESC programming card

Typically brand specific, but there are some exceptions. E.g JETI programming cards will work on JETI and Dynam controllers (and I believe a few other brands as well).
Forum: T-Rex heli
12-21-2007, 09:33 PM
Replies: 14
Views: 1,099
Posted By credence

RE: New Digs For my TREX

The one with the skull is obviously better, because the skull reminds me of pirates, and pirates are awesome.


;)
Forum: Electric RC Helis
12-12-2007, 10:25 PM
Replies: 6
Views: 3,676
Posted By credence

RE: T-Rex 700 Poll

Well, if they're going to call it the T-rex "700" then it would certainly be electric, otherwise they could just call it the T-Rex .90! ;)

I'd take an electric any day over the nitro, a 12S lipo...
Forum: RC Helicopter General Discussions
12-12-2007, 02:08 AM
Replies: 9
Views: 1,512
Posted By credence

RE: rpm synchronizer

Since there is always variances between even motors of the exact same make, the only real way to get two motors to operate at the exact same rpm would be to use a governor, one for each motor set up...
Forum: Electric RC Helis
12-10-2007, 05:46 AM
Replies: 358
Views: 49,011
Posted By credence

RE: My Hurricane 550's first Hover

There is also the fury ion-x which is one hell of a nice machine.
Forum: Electric RC Helis
12-09-2007, 09:49 PM
Replies: 358
Views: 49,011
Posted By credence

RE: My Hurricane 550's first Hover

If you like noisy models you might get a kick out of this.

http://www.truenorthernhobbies.com/mystuff/ehawkfirstflightfeb16.avi

This was the very first, untrimmed flight of a Century Hawk...
Forum: Electric RC Helis
12-09-2007, 10:23 AM
Replies: 358
Views: 49,011
Posted By credence

RE: My Hurricane 550's first Hover

I've got a 550 and love it. It's an incredibly smooth machine, and even on the stock motor, with 25C 2250 packs, the model has remarkable punch similar to a 450 sized heli but with the stability of...
Forum: RC Helicopter General Discussions
12-06-2007, 09:30 PM
Replies: 17
Views: 2,313
Posted By credence

RE: Futaba Gyros cause cancer!

:):)
Forum: RC Helicopter General Discussions
12-05-2007, 02:21 PM
Replies: 23
Views: 3,780
Posted By credence

RE: Need a 3800 Watt or larger brushless outrunner

mrasmm is about spot on in regards to discharge and cycle life. It's better to buy high discharge packs and discharge them at half their rated capability as it'll result in longer life. Like i'd said...
Forum: RC Helicopter General Discussions
12-03-2007, 07:59 PM
Replies: 23
Views: 3,780
Posted By credence

RE: Need a 3800 Watt or larger brushless outrunner

167A @ 60V would give him over 10 kw of power. This is way higher than what he needs. I don't even want to think about how much 88 ah of lithium cells would weigh!

That said luv2glyd, just...
Forum: RC Helicopter General Discussions
12-03-2007, 07:54 PM
Replies: 23
Views: 3,780
Posted By credence

RE: Need a 3800 Watt or larger brushless outrunner

He's trying to convert a powered para glider to electric.
Basically a parachute with a small prop out the back to provide forward momentum, usually powered by a small gas engine.

Guess you...
Forum: RC Helicopter General Discussions
12-03-2007, 03:10 AM
Replies: 23
Views: 3,780
Posted By credence

RE: Need a 3800 Watt or larger brushless outrunner

Most people are pulling A123 cells from Dewalt or Makita battery packs since A123 does not sell directly to the hobby market as far as I know.

A123's have 4 major benefits though over standard...
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