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Other › Does anyone fly a scale Trex 450 and like it?
11-26-2006 04:14 PM  11 years agoPost 41
Super-Hornet

rrVeteran

Singapore

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Ah.... http://www.airliners.net! That one I frequently visit. Very useful site.

Thanks anyway.

SH

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11-26-2006 04:27 PM  11 years agoPost 42
slider46

rrProfessor

Ocala Florida

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If you could send my some detailed info on building the muti blade head I would really appreciate it. I would like to build one this winter for my 500E scale trex....

Tom..... No "D" flying....

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11-27-2006 12:11 AM  11 years agoPost 43
bexusflexus

rrApprentice

Tulsa, OK

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Thanks everyone. This is great info. I am leaning toward getting a 500E body, but it is a hard decision to make since there are so many cool fuselages out there. I like flying the 500s on the sim the best. Also, like the Huey UH-1, Bell222, and a few others.

Hopefully, the build process isn't too difficult. I'm not a great detail painter, etc. Of course, I would hate to spend a few dozen hours detailing out my fuselage only to crash it. I'm sure it will make my flying much more conservative w/the Trex, which is what I am looking for.

even not doing anything would have been better than nothing...

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11-27-2006 12:24 AM  11 years agoPost 44
Darthdrk

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Munford, Tn

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I dont recommend flying with a scale body until you are over the crashing stage. Once in a while we all still crash but I think you know what I mean. Its not going to make a whole lot of difference what material the body you buy IE: Styrene/PETG/Lexan/Fiberglass. No heli body out there is designed to come from a crash unscaved. Ive had minor mishaps that has done more damage than a direct slam into the ground with both styrene and PETG. But....as far as repairing the styrene is easiest. The hughes/MD 500 may be cramped or unmountable on the CDE frame. Almost all the other bodies should be a basic painless install. The joy comes when your about eye level side in hover and zipping around in scale fashion.I gotta micro Hughes 500D on a HoneyBeeCP2 frame that is as smooth as silk. I got my T-rex up and going, still doing a little fine tuning and Im gonna first put on my Jet Ranger and then My Airwolf.

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11-27-2006 02:49 AM  11 years agoPost 45
slider46

rrProfessor

Ocala Florida

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Darth is right the 500E is very tight on my XL frame. I had to go to a smaller (65mm long)battery so I have to use 1350 mah packs to fly it I still get 7-8 min but I was hoping for 10-12 min flites with the 2100 mah packs...

Tom..... No "D" flying....

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11-27-2006 09:08 PM  11 years agoPost 46
bexusflexus

rrApprentice

Tulsa, OK

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Thanks guys that's good to know about the 500. Looks like I'm gonna need to do some more research.

As far as crashing goes I guess that's just the name of the game. However, if I limit myself to just normal FF and turns I don't crash that much. Its when I start attempting 3D stuff. I have a good sim now and have been unlearning a lot of bad habits I got from FMS. That should help.

even not doing anything would have been better than nothing...

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11-28-2006 02:14 PM  11 years agoPost 47
slider46

rrProfessor

Ocala Florida

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Flying a good sim will help alot, but the real test is with your real heli. I fly reflex all the time but it's different than a real heli that will break into a million tiny pieces if you hit the ground..
One good thing about the Darth bodys is the tail boom is a seperate piece so if you catch a skid in the grass, like I did the other day, and flop the heli over, you only need to replace the tail boom piece and your good to go again.... I can't wait to get the 500E in the air again...

Tom..... No "D" flying....

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11-28-2006 05:26 PM  11 years agoPost 48
Tomie

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OC CA

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I have an HDE frame collecting dust.. and I was wondering what Scaled body can I use using a standard lipo? (I mean a canopy thats long enough to get my battery installed properly). Thanks!!

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11-28-2006 07:28 PM  11 years agoPost 49
BikeNBoatN

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Santa Ana, CA USA

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My MX400 is just like your HDE. That's why I went with a JetRanger body, as it's long enough to accomodate the mechanical pitch mix frame with the lipo sticking out in front.

I think the Bell-222 would also fit, though I think it looks best with retractable wheels, instead of the fixed landing skids. The Bell-222 is what the Airwolf body is also. That one definitely needs retracts to look good. Plus, the black paint job would be challenging to see in the air. I prefer nice bright colorful paint jobs to make it easy to see.

Brent
Slow and Smooth 2-D Scale Flyer
AMA #35431

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11-28-2006 07:42 PM  11 years agoPost 50
slider46

rrProfessor

Ocala Florida

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Brent is right about the longer nosed bodys for the HDE mechanics. I used the XL for my 500E and it was a challenge getting a big enough battery in the canopy but I got a 1500mah 15c battery that is working good. If I had used my SE heli there wouldn't be any issue with the battery.. but the 500E does lack room due to it's small sized cockpit area...
I would like to try a Huey or a long ranger for my next body on the XL I think, I just need to work out the elevated tail details for the Huey....

Tom..... No "D" flying....

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11-29-2006 02:29 PM  11 years agoPost 51
slider46

rrProfessor

Ocala Florida

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I'm ordering my Huey body today for a winter project I just need to figure out the elevated tail and it will be a snap.. I hope!

Tom..... No "D" flying....

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11-29-2006 11:38 PM  11 years agoPost 52
bexusflexus

rrApprentice

Tulsa, OK

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What is the benefit of the raised tail? I have seen some Hueys that don't have the raised tail. Is it that it is just a more scale look?

even not doing anything would have been better than nothing...

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11-29-2006 11:51 PM  11 years agoPost 53
Super-Hornet

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Singapore

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What is the benefit of the raised tail? I have seen some Hueys that don't have the raised tail. Is it that it is just a more scale look?
My personal answer:
1. Well... Scale!
2. Elevated tail allow you to land on grassy area (well grass not too tall) without chopping the grass.
3. If u can, u can do a flare landing...just like in real heli.
4. If do you somehow do hard landing from either autorotate or emergency landing, the tail will not hit first. (See below)
5. Some claim that elevated tail will have lesser tilting effect when hover.

For In-Line tail rotor (like Jet Ranger or our normal TRex), when hard landing or when doing poor autorotate, the tail horizontal fin will hit the ground first. This causes the tail to bounce up and the main blades will chop the tail boom (boom strike). If the main blades do not chop the boom, it tend to topple sideway and blades hit the ground.

SH

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11-30-2006 05:55 AM  11 years agoPost 54
cyclicpitcher

rrApprentice

Memphis TN

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HDE in a DarthDrk Jetranger is perfect day to day flyer for me.
Jetranger on HDE is an easy build and the battery is no issue. I have build pictures on my website your welcome to check out. Good luck and Happy flying! TREX rulez the world!

www.funscale.com

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12-19-2006 11:16 PM  11 years agoPost 55
bexusflexus

rrApprentice

Tulsa, OK

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Ok I ended up getting the Darthdrk Hughes 500E body:

http://www.rchover.com/inc/sdetail/3036

I am thinking about putting it on my SE. However, if I ever wanted to take it off is it hard to get apart? If so, I might get an SA and put it on there.

even not doing anything would have been better than nothing...

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12-20-2006 12:27 AM  11 years agoPost 56
slider46

rrProfessor

Ocala Florida

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It won't matter which frame you put it on they all will take about 15 min to remove and 1/2 hour to put back on, After it is installed the first time... I have 2 screws in the lower body,4 screws on the landing gear, and 2 screws for the t-tail, a few pieces of tape and it's all on and ready to fly......OH and 2 pins to hold the canopy on the main body

Tom..... No "D" flying....

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12-20-2006 02:39 AM  11 years agoPost 57
OZ-TREX

rrNovice

Brisbane, Australia

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Super-Hornet

Your video looked like the multiblade heads were very stable. Do you have any problems with stability or do you have some magic tricks to make them fly so well. Would love to see some closeups of the heads so that we can look at your design. Also on the twin rex do you mix the inputs electronically or are you doing this mechanically to achieve stable operation.

Nice engineering from what I can see that is for sure, you should be very proud of what you are doing...we are certainly impressed.

Of all the things I've Lost, I miss my mind the most...

Of all the things I've Lost, I miss my mind the most...

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12-20-2006 04:46 AM  11 years agoPost 58
Super-Hornet

rrVeteran

Singapore

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Hi OZ-TREX

Thanks for the good comment. I do not have camera so I can't just take photo of my Heli. All the photo was taken by someone else camera.

Anyway, back to multibladed:
I have 2 bladed flybarless in my UH-1M. Due to it is 2 bladed, it require some stability augmentation (I called it SCAS or Stability Control Augmentation System) to stabilize it. With that, I uses 2 normal non heading hold gyro (GWS PG-03) to "mimic" the flybar+weight behavior...and thus to stabilize it.

Apart from gyro, I do uses other design to further stabilize it. I uses mechanical mixing or throw reduction to reduce the cyclic and also amplify the servo torque.

For my multibladed head (3 and 4 bladed), I also create a fully articulated rotor head (but simple design) as well. I have 2 Four Bladed head TRex. One with gyro assist while the other do not use any gyro (except tail) at all.

All fly very well.

For my Tandem heli, I uses 3 gyros (elevator, aileron and rudder) to assist the stability. My tandem heli adopt/follow the real Chinook helicopter control...which is Differential Collective Pitch.
Both rotor heads are mCCPM configuration. Since I use Differential Collective Pitch, I do need to mix the Aileron, Elevator, Rudder and Pitch signal to achieve DCP control (U will be surprise that it is very very easy to do...if u are using mCCPM configuration)

SH

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12-20-2006 05:12 AM  11 years agoPost 59
Super-Hornet

rrVeteran

Singapore

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BTW, my 4 Bladed TRex that do not use cyclic gyro is this one:
http://www.runryder.com/t307260p1/

After trying 2, 3 and 4 bladed TRex, I can say that it appear to be, the more blades u have, the more stable it goes.

SH

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12-20-2006 05:40 AM  11 years agoPost 60
OZ-TREX

rrNovice

Brisbane, Australia

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SH

So your non heading hold gyros are you moding them at all or just using them as supplied?....As I said nice work, if you get a chance to get some photos I/we would love to see them.

Of all the things I've Lost, I miss my mind the most...

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