250 Trex 250 Pro DFC Super Combo Completed

[Tony]

Part prices are about that of the 450's. And if you have crashed a 450, you already know what breaks in a crash on a 250 lol.

 

[xokia]

Part prices are about that of the 450's. And if you have crashed a 450, you already know what breaks in a crash on a 250 lol.

I have not ever crashed my 450 yet. I do most of my stick banging on the 130x and only try things out that I have mastered on the 450.

 

[Marshall]

Hey Tony, I got the little Trex 250 Pro dialed in and she fly absolutely wonderful. It does seem to be a little underpowered though. Only gripe is, I have the collective set at 12 degrees and it just dont seem to have the power to handle that. Probably need to back it down to the recommended 11 degrees. I have to give a lot of collective to catch it (is this normal). The set up is spot on and hovers great. I am currently using the E-Flite 800mAh battery as that is all I could find here localy. I have (4) 850 mAh batteries coming in the mail, do you think this will make a differance in pwer (I doubt it). In comparing it to the Trex 450 Pro DFC, I can just bump the collective and she is heading up in a hurry.Oh yeah, the first couple of batteries I never got far off the ground (3GX rebooting on set up issue) since those 2, I have ran 2 more through it and no problems so far. Other than that, this little bird is wonderful. What should my pitch curve be set up for the 250. Here is what I have at now.

Norm - -30,-10,+10,+52,+100
IUP1 - -90,-50,+10,+50,+100
IUP2 - -100,-50,+10,+50,+100

Hi, I am a new member here and I have a 250 pro dfc 3gx and noticed that you said it was a little underpowered, well being a noob I do not require more power but have seen a motor upgrade for these little fella's on the Align UK site.
In the upgrade section it gives an option as follows: 'Scorpion HKII-2206-3900KV V2 Brushless Motor (2.5mm Shaft) SC-HK2206-3900KV', hope this helps, you may be able to get it where you are, I'll also try and add the link.
Andy.
404 Not Found 1 - ALIGN-TREX.co.uk RC Model Helicopter Specialists in ALIGN, E-Flight, Blade, Goblin, Synergy, ALeeS, Outrage, ELY-Q

 

[xokia]

I just started flying mine and it doesn't seem under powered to me. It seemed pretty snappy to me which I like.

 

[Ken Jackson]

Anyone new reading the above post please do not use those pitch curves. Sorry I just had to say something. I wouldn't have wanted to been standing anywhere near that site when the pilot went negative pitch for any reason, had to be a handful landing in normal and I would say impossible in either idol up. WOW, just make sure to read the entire post especially where Tony gave the typical pitch curve settings.

 

[Marshall]

Anyone new reading the above post please do not use those pitch curves. Sorry I just had to say something. I wouldn't have wanted to been standing anywhere near that site when the pilot went negative pitch for any reason, had to be a handful landing in normal and I would say impossible in either idol up. WOW, just make sure to read the entire post especially where Tony gave the typical pitch curve settings.

So can we have someone say what would be good then?, I personally want a docile flight at the moment and would be grateful for some advice please?

 

[Ken Jackson]

In the post above where it says originally posted by N Henderson there is a blue arrow, click on that and it will take you to the original stream where Tony list what I would call normal and typical settings for both throttle and pitch curves. If you can't find it let me know.
Ken


- - - Updated - - -

In the post above where it says originally posted by N Henderson there is a blue arrow, click on that and it will take you to the original stream where Tony list what I would call normal and typical settings for both throttle and pitch curves. If you can't find it let me know.
Ken


- - - Updated - - -

Throttle Curves
Normal Mode 0 40 60 80 100
Idle Up 1 70 70 60 70 70
Idle Up 2 100 100 90 100 100
Pitch Curves
Normal Mode 46 48 50 75 100
Idle Up 1 0 25 50 75 100
Idle Up 2 0 25 50 75 100

This is a pretty docile set up depending on how your dual rates are set up? I typically set all my pitch curves to 0 25 50 75 100. Basically what is listed above gives you almost no negative pitch so if your wanting to descend quickly that won't get you down very fast. Obviously killing the throttle will bring you down but it won't happen fast with so little negative pitch. Remember 50 is no negative and no positive.
Ken

 

[Marshall]

Great!, Thank you very much.
Andy.

 

[Tony]

Another way to make it a little more soft on the sticks is to reduce the amount of total travel. You can go into your swash mix, put a pitch gauge on the blades and adjust the collective to 9º positive and negative. You will still have to stick with 8º on the cyclic though because that is what the 3GX wants. Another reason I'm going with the Ikon when I get the money. From what I'm reading, it's an almost hands off gyro.

 

[xokia]

Another way to make it a little more soft on the sticks is to reduce the amount of total travel. You can go into your swash mix, put a pitch gauge on the blades and adjust the collective to 9º positive and negative. You will still have to stick with 8º on the cyclic though because that is what the 3GX wants. Another reason I'm going with the Ikon when I get the money. From what I'm reading, it's an almost hands off gyro.

I dont think the Ikon will fit in a 250 though.

 

[Tony]

Yeah, I'm not sure about that one. I will be sticking this on the nose of a 600, so space is not an issue lmao. Well, kinda.

 

[Nl Henderson]

These pitch curves are for the Fuaba T8FG and they work just fine, these are what I started out at but have changed them since, Futaba goes from -100 to + 100 with 0 being mid stick.