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Old Jan 24, 2007, 07:59 AM
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Trex 600 vs 450

I'm considering a 450SE or 450S but I'm looking for something that is stable and can take a bit of wind.

Is there a huge difference in the stability and easy of flight between the 600 and 450 size trex's?
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Old Jan 24, 2007, 08:04 AM
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The 450 can "take a bit of wind".
I have never flown or seen a 600! But would have no doubt it is far more stable in every way.
Bigger means less wind 'ratio' to it. Like a real heli wouldn't care.
Bigger - heavier, means a more stable platform IF you want it to be. eg could be setup for high response for 3D instead. Though even then it would probably be better than a 450 stability anyway.

A 450 can fly reasonably safely at a park.
A 600 is BIG. So you are getting to a size you really want to be well away from anyone! And at a flying field really.
I have seen people fly micros around inside a 600's canopy, while it was flying!! (well, that is a bit of an exaggeration..umm, total crap really.)

600's are also VERY expensive. Not so much the basic kit, but everything it uses. Batteries! You leap up into another realm as you move up the ladder of sizes.
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Old Jan 24, 2007, 08:28 AM
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450 is reasonably stable in wind - higher headspeed helps. However, in gusty conditions they are not suitable for learning to hover as you ned to be "on the ball" with control corrections. The 600 is going to be a lot more stable in wind but I'd still be reluctant to see a learner try to hover in wind because the repecussions of getting it wrong would be much worse... more expensive and also (potentially) life threatening.

If you plan to teach yourself to hover / fly then the 450 is the right choice. You can learn to hover in a small garden - you certainly cannot do this with a 600.

If you're going to join a club and get instruction (buddy box etc.) then a 600 might be a good choice but (big but) you have to ask if you are in the heli game for the long run. As has been pointed out, 600 kits are not that expensive (compared to 450 kits) BUT the extra 'stuff' that is not in the kit is WAY more expensive. Servos will be twice the price, you really NEED a decent gyro for a 600 (although a Futaba gy401 is a great option for the 450 and would work on a 600 also) and the batteries are, as has been stated, in a different league.
FOr a 450 you can pick up a couple of 'no name' 2100MaH packs for $90. They will get you thru learning hover and forward flight. For a Trex 600 you're going to be into $150 - $200 per pack MINIMUM - not to mention needing a better charger and balancer than you would need running 3S stuff.
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Old Jan 24, 2007, 09:52 AM
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I have both.

A well set up 450 is a very stable machine, but the 600 is incredibly stable. I would learn on a 450, it will hold up in reasonable wind fine. It is well built and inexpensive to repair.

When you are completely comfortable, go to the 600. The 600 is the easiest machine that I have ever flown. It is incredibly smooth, will stay locked in a hover, yet is very agile when you want it to be.


Go to Helifreak for step by step videos on assembly and set up on both.
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Last edited by Ah Clem; Jan 24, 2007 at 10:36 AM.
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Old Jan 24, 2007, 11:57 AM
T-REX450SE T-REX600CF
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Quote:
Originally Posted by Ah Clem
I have both.

A well set up 450 is a very stable machine, but the 600 is incredibly stable. I would learn on a 450, it will hold up in reasonable wind fine. It is well built and inexpensive to repair.

When you are completely comfortable, go to the 600. The 600 is the easiest machine that I have ever flown. It is incredibly smooth, will stay locked in a hover, yet is very agile when you want it to be.
I agree. I also have both and can agree with the above statement.
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Old Jan 24, 2007, 01:22 PM
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I used to have both. The 600 was too big and you had to go to a BIG field where theres no body around because the 450 can injure someone real bad and possibly kill them....the 600 WILL kill someone if its not handled right. The 450 is a very stable heli and you can make it as responsive as you want. Start out with the 450 dude...you can have a nice setup with the 450 for the same amount you spend on lets say...3 good batteries for the 600. Thats not even the heli yet!! Just the batteries...
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Old Jan 24, 2007, 03:52 PM
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What is the AUW of the 600? They are BIG! Does anyone know how much Horsepower those develop? It has to be 1-1.5 I would think.
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Old Jan 24, 2007, 04:15 PM
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600 are big until you hang with the glow guys that flies 90 size birds. Remember the T-Rex 600 is "only" 50 sized. But they are far more agile than the larger birds.

I agree with the above statements. Size definitely contribute to stability. My 600 can literally hovers hands off. Only downside is the initial cost, specially batteries.

If 600s are too big for your taste, Align is about to introduce a T-Rex 500 by end of February. This will be an in-between size of 450 and 600, similar to a Logo 10. So if you have the patience to wait another month or so, you'll have even more choice (or dilemma).
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Old Jan 24, 2007, 04:39 PM
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Greybird - I should think that the 600 would have a motor that produces quite a bit more than 1-1.5 hp :-) I have a Swift (hasn't flown yet) that's been outfitted with a Neu 1910/1.5Y, that motor is capable of 1500w (2.01 hp) burst and 1200w (1.6 hp) continuous.

Cheers,
ACE
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Old Jan 24, 2007, 07:30 PM
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at the risk of just repeating what everyone else said, its all in what you want, and what youre going to do with the hobby.

as mentioned, the 600 is bigger. you do get the extra stability, which is really nice. you do however need a bigger area to fly in. i can fly my 450 around my apartment parking lot with no problem. id hate to try that with a 600.

my suggestion would be go for the 450. its cheaper, easy enough to fly, and can grow with your abilities. also, if you learn how to handle a 450 in all of its twitchiness, a 600 or bigger will be absolute cake.

also, if youre worried about crashing alot, id recommend a sim like realflight. i spent a lot of time learning on that before i even touched a real heli, and i was able to get off the ground without too much trouble
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Old Jan 24, 2007, 08:20 PM
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Is HP a direct conversion from watts?
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Old Jan 24, 2007, 08:48 PM
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Go to Google... in the search field type
convert 450 watts to horsepower



Works for a bunch of conversions.
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Old Jan 24, 2007, 09:05 PM
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746 watts to the horsepower.
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Old Jan 25, 2007, 02:03 AM
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If your new go with the 450. The 600 and a great heli. But for a newb its way to much heli. Get your confidence up with a 450 then go bigger. Also a crash with a 450 is gonna cost about 25% of what a 600 will. When I crash my rex its about $25-$75 to fix. My buddy crashed his 600 and it was $200 to get it back up. Which is why align needs to break down and make a OEM airframe only kit. ALot of times in a bad crash, especially with the big'ens its cheaper to just buy a new kit for the parts.
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Old Jan 25, 2007, 02:08 AM
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I'd say for a new flier... if you really want a big heli to learn on, get a glow Raptor 50. Thunder Tiger helis are far cheaper to crash (their parts are hardly any different in cost to a T-Rex 450). But you'll have to find a club and an instructor if you go that way.
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