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T-REX 500 › Help an old guy set up Trex 500 as trainer
08-07-2012 07:48 AM  5 years agoPost 1
jamesdh

rrApprentice

Houston, TX

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OK I'm a little embarrassed to be asking this in a balls to the wall forum but I know you guys have the knowledge.

I've been out of the heli business for a few years due to health problems. I'm all sorted and better than ever now and want to get back into heli flying.

I have a T-Rex 500 that I bought back in the day. I just finished building it and I want to set it up for training. I know the argument of it's more expensive in a crash etc.. but I'm a firm believer in bigger is easier to fly. I've got two 450's left over from the day. One in flying shape, the other not far from it and I think the 500 would be less squirrly.

I've been on the Phoenix simulator for an hour or two each day for the past week. Able to hold a decent hover in all but nose in.

My idea is to use normal pitch mode. -2 at bottom of stick, 0 at mid stick and +10ish for high stick. Straight 0, 50, 100 on throttle.

I'm looking for more suggestions to tame it down a little. Expo? Dual rates?

Believe it or not I'm looking at getting training gear to start.

All suggestions welcome!

Let's bring back survival of the fitest.
ΜΟΛΩΝ ΛΑΒE

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08-07-2012 10:41 AM  5 years agoPost 2
wrongler

rrProfessor

Brewerton, New York

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Less head speed will help some, Along with D/R and Expo. you should be able to tame it any way you want. Keep up the good work with the sim, way cheaper than a Heli. Welcome back to the best hobby in the world! Glad you are better.

wrongler

Bill Whittaker

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08-07-2012 02:32 PM  5 years agoPost 3
Four Stroker

rrElite Veteran

Atlanta

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Put the red 60 durometer dampers in it AND remove the plastic pivot tube that goes between the dampers inside the head.

Low head speed on a 500 is 2000 rpm.

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08-07-2012 02:54 PM  5 years agoPost 4
ppridday

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Detroit Lakes MN

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What part of Houston are you in? If you head out to one of the fields there are plenty of people who would be more than happy to help you out I'm sure. There are some great people out there at the fields...

Paul

"There's someone in my head, but it's not me..."

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08-07-2012 04:11 PM  5 years agoPost 5
jamesdh

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Houston, TX

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I'm near Cypress.
1960 and 290 area.
I'll drive to a field if it's not on the other side of Houston.
It would be great to get hooked up with some flying buddies.

Suggestions?

James

Let's bring back survival of the fitest.
ΜΟΛΩΝ ΛΑΒE

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08-07-2012 05:13 PM  5 years agoPost 6
Gladiator

rrApprentice

Miramar, FL - USA

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Have you consider converting it to Flybarless?

iKon, because I am connected to my heli, are you?

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08-07-2012 05:50 PM  5 years agoPost 7
jamesdh

rrApprentice

Houston, TX

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Wrongler,
Thanks for the well wishes.
I am glad to be back. Forgot how much I enjoy Helis and RC in general. Even with the sim I get that "zoned out" feeling where you forget about everything except flying. Great for stress relief!

FourStroker,
I didn't see any Red dampners.. I'll double check the spare parts and order some for when I get back home. I know the tube you're talking about. Will extract it when I install the red dampners.

Gladiator,
I've got the head and the gyro for Flybarless but figured it was just a lot more to set up (read.. make mistakes!).
That was a question I had but didn't ask. Can flybarless be set up for smooth, stable flight?

Let's bring back survival of the fitest.
ΜΟΛΩΝ ΛΑΒE

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08-07-2012 06:29 PM  5 years agoPost 8
Four Stroker

rrElite Veteran

Atlanta

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The gray dampers are close, 70 durometer. They probably came with the kit. Well I meant the H55055 but maybe they won't fit the 500 anyway. Just use the gray ones but do take out the tube.

EDIT: Looks like H50101 is all you can get which is gray 70 durometer.

Save the FBL stuff for much later.

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08-07-2012 06:49 PM  5 years agoPost 9
Waco

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Bernalillo, New Mexico USA

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I set up my 550 Gaui with no negative pitch, 30% expo(Aileron & Elevator) and matched the head speed/ pitch curves for liftoff around 60% of stick with a smooth transition at hover. Not 3D of course but I don't need the rush (being an old guy myself). Also frees up more cash (that I would otherwise use for 3D related repairs) for my main hobby of brew sampling. Cheers, Waco

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08-07-2012 08:04 PM  5 years agoPost 10
ppridday

rrKey Veteran

Detroit Lakes MN

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Also frees up more cash (that I would otherwise use for 3D related repairs) for my main hobby of brew sampling. Cheers, Waco
Brew sampling eh? I'll be over this weekend!!!

Paul

"There's someone in my head, but it's not me..."

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08-09-2012 07:04 PM  5 years agoPost 11
jamesdh

rrApprentice

Houston, TX

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Success.. Sort of.

While waiting on some parts for the T-Rex 500 I came across a Blade MCPx that I bought long ago and never flown.
Programed my DX6i according to the manual. Lowered my travel on Ailerons and Elevator to 40% both ends. Set pitch curve on normal mode as 47, 50, 60, 70 and 80 while the batteries were charging.
First flight.. nervous.. hands shaking, knees knocking but I said "let's do it" and waalah.. Rock solid hover!!!
Hovered a little and had to put it down and recover my nerves.

That little sucker is smooth as butter.

Hot Dam!! now I remember why I got into this hobby.

Let's bring back survival of the fitest.
ΜΟΛΩΝ ΛΑΒE

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08-10-2012 02:44 AM  5 years agoPost 12
Waco

rrApprentice

Bernalillo, New Mexico USA

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Now for some brew to celebrate and settle the nerves.
Cheers, Waco

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08-10-2012 02:45 PM  5 years agoPost 13
jamesdh

rrApprentice

Houston, TX

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The settings I used for the MCPx are basically per the manual except the travel for Aileron and Elevator are reduce to 30% of normal travel.
Also the throttle and pitch are limited to 80% or so.

Any reason why I can't do that with the 500??

Let's bring back survival of the fitest.
ΜΟΛΩΝ ΛΑΒE

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08-11-2012 12:02 AM  5 years agoPost 14
Waco

rrApprentice

Bernalillo, New Mexico USA

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I just had a two beer lunch but I'am sure that full travel is desired on cyclic. Expo however, say 30%, for a 500 would tame the stick down sufficiently. This setting works for my 550 but some experimentation will be required to dial in what you are comfortable with. I use no expo on the rudder which requires different settings depending on mfgr. Cheers, Waco

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08-11-2012 01:40 PM  5 years agoPost 15
Four Stroker

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Atlanta

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Reduce to about 40% throw on elev. and ail. Leave it linear. Good for beginners.

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08-11-2012 03:21 PM  5 years agoPost 16
Waco

rrApprentice

Bernalillo, New Mexico USA

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Expo does make it linear. Waco

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