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T-REX 550 › Is Trex 550 the right machine for me?
11-16-2011 07:08 PM  6 years agoPost 1
jfint

rrApprentice

Simi Valley, CA

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Ok, so I know this type of question usually sucks, so I'm going to try and list some criteria, and hopefully someone can tell me if a 550 will fit and maybe answer some questions.

I had a compass atom 500, and I missed being able to auto-rotate, but liked the size, I know the 550 is bigger. So, does the 550 auto-rotate like a .30 size heli?

I have 2 3300 mah 6s packs, would these be enough? I know its within Align's recommended size, but I notice some guys flying on upwards of 5000mah?

What is the deal with all the flybarless stuff? Is there really an advantage, or is it just a cool new thing? Having never set up flybarless be being really good with a standard head, will I be able to set it up without help?

Are Align's servos and Gyro worth while? I have 2 gy401's with 9254's sitting on my shelf, should I just sell these and use the Align one that would come with the heli?

I know some of these are opinions, Its been about 2 years since I flew heli's regularly, I had nitros, and a gasser, and and old trex 450 and the compass before I sold everything off. I want something that fits in my back seat, because I'm often on flight tests for work now that have a couple hours of downtime in them.

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11-16-2011 07:49 PM  6 years agoPost 2
Evan03

rrVeteran

Idaho

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I realy like the 550. Its a good size and shares some 600 parts. I realy like the 610 servos strong and durable. The 620 is okay but in my option is lacking. A ds650 is a good upgrade.

I realy think its a toss up between 550 and 600. I think 3300 batteries would be fine. Heck 3300 Batts might fit on a 600 pro.

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11-17-2011 04:55 AM  6 years agoPost 3
Phaedrus

rrKey Veteran

S. Orange County, California

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I am getting 6 minutes of hard sport flying on my 550 with 553mm blades and the stock ESC using about 3,000mAh of capacity. Your 3300 packs will not give you the full punch the larger packs can and will only give you maybe 5 minutes or less flight time. In addition the 550 will be very tail heavy with 3300 packs. With my 5,000 Turnigys at 836 grams i am just a tiny touch tail heavy.

I have a FB right now with the stock Align 610s. I flew about 100 flights with the 620 on the tail and recently went to a 650. I can definitely feel a difference. I am using a Futaba GY-520 on the tail on the FB version.

I am building a FBL 550 now and plan on 610 for cyclic and 650 on TR. I am going to use a Futaba CGY-750 for the FBL unit.

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11-17-2011 05:25 AM  6 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

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The 550 autorotates somewhat better than a 30 nitro, but not as well as a 50. Somewhere in-between. Not bad, though.

6S 3300 won't give you much flying time, no matter how you cut it. I'm flying 6S 4500's, and have my timer set to 5:30. I put back about 80% of a full charge at that. The 5000's give you a little more margin for maybe 6 minutes of flying.

Your 401 is OK, but by today's standards, not great. If you go the Flybarless route, you don't USE a tail rotor gyro, that's built into the FBL controller. The performance of the FBL controllers with regard to the tail will run circles around your 401. Your 9254 would be OK, just make sure you don't run it over 5.8 VDC.

The DS610 servos work well. No complaint here.

FBL is interesting if you've never flown it. The heli just feels differently, and definitely handles differently. In the wind, the difference between flybar and flybarless is most striking. I've got one FBL system (550e 3G) and this winter am seriously considering taking a few of my current helis into the FBL world.

BOTH FBL and flybar systems have their place, and both perform well when setup correctly.

If you go the Align electronics route, you'll find the DS620 will outperform your 9254.

FBL setup is not all that difficult, it's actually much simpler - at least mechanically as there are only two pushrods above the swashplate (and only three below). Depending upon the FBL controller you choose, that, too can be dirt simple, or if you like to tinker and go where no man has gone before, buy the programming dongle, download the software, and see just how messed up you can get before declaring a hard reset back to default parameters. And enjoy lugging a laptop or notebook along with you to the field for that last minute tinkering.
I want something that fits in my back seat
The 550 could do that, depends upon how much room that back seat has, as the 550 is a 30-sized heli. The 500 is definitely a "fit in the back seat" heli, and properly set up can be impressive. But the 550 just comes out of the box impressive.

You'll like the 550 for other reasons, too. It's a powerhouse and will do whatever you ask of it. Fun machine all around.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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11-17-2011 04:40 PM  6 years agoPost 5
jfint

rrApprentice

Simi Valley, CA

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Thanks guys, sounds like I should maybe sell off those 3300's and get a 5000 pack, also sounds like I need to start seeing if there are needy heli homes for some of my dated electronics, lol.

Thanks for the input guys

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11-17-2011 04:42 PM  6 years agoPost 6
jfint

rrApprentice

Simi Valley, CA

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What are the main differences between V1 and V2? Occasionally I see used ones.

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