Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Electronics Support > Flight Stabilization


Flight Stabilization Flight Stabilization


Reply
 
Thread Tools Display Modes
Old 03-07-2010, 07:33 AM   #101
Trooper
Registered Users
 
Posts: 466
 
My HF Map location
Join Date: May 2007
Location: Somerset, UK
Default

Quote:
Originally Posted by Navigator53 View Post
I agree with Ivor, get the 9 channel radio and resist the temptation to get all of it dialed in at once, one step at a time Flame, 'cause everytime we take a step forward, the view changes
A 9 channel or more is definately the way to go. Makes life easier all round and the extra channels can be used for turning lights on and off etc.

Ian
Trooper is offline        Reply With Quote
Old 03-07-2010, 11:24 AM   #102
Navigator53
Registered Users
 
Posts: 2,137
Thread Starter Thread Starter
 
My HF Map location
Join Date: Mar 2008
Location: Canby, Oregon
Default Good info!

Thanks Night!

You have me running off in a new direction now.

In my in searching around for LED setups, I found an LED replacement anchor light for the boat.

One of the issues at anchor is trying to keep the batteries up, I even have a solar panel but still over time batteries run down.

The LED one uses 2/10 of an amp vs 1.5 amps

Mel

Quote:
Originally Posted by nightflyr View Post
All you get???

I don't know if you can find the lights I used on the web site,
I happened to be in the store here where I live and saw a selection of accent lights for your car and thought they would work nicely on a heli....

If I remember correctly, the light strips we're $19.99 a piece, and the 4 strobes with the controller was $29.99
As far as hooking them up..... you'll need to either add a 3S lipo to your heli to power the light, or if your flying a larger bird you can install a voltage regulator off of your main flight battery(s) to kick down the voltage to 12V to supply the needed power.(3S lipo is a simple solution)
__________________
When the people find that they can vote themselves money, that will herald the end of the republic.
~Benjamin Franklin ~
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Navigator53 is offline        Reply With Quote
Old 03-07-2010, 10:28 PM   #103
splitboarder
Registered Users
 

Join Date: Sep 2008
Location: San Diego, CA
Default

OK....quick question about using autotrim. I set up my heli and put my swash leveling tool on the main shaft. I gave the collective 50 percent input. The servo arms were close to 90 degrees with the aileron a bit lower than the other 2 servos. I gave 100 percent stick input and the swash went up level except the slight dip towards aileron. I gave full negative and the swash stayed level except for the dip in the aileron side.
I decided to simulate a hover on my kitchen table by putting in a bit of input to the aileron to keep the swash level. After 8 seconds I hit the auto trim.
The swash now is level at 50, 0 and 100 percent stick input. I have 0 degree pitch at 50% and -10 on zero and +10 at 100 percent

All the swash movements are correct, the swash responds correctly in horizontal mode I wil be using the internal gyro with gain at 21 percent in heading hold mode only.

All my servos look good on the PC tabs

What happens if my heli is a bit tail heavy? Im guessing I still have to hover for 8 sec and autotrrim again correct?

I think I may be ready again



Now if it will stop raining
splitboarder is offline        Reply With Quote
Old 03-08-2010, 12:34 AM   #104
Navigator53
Registered Users
 
Posts: 2,137
Thread Starter Thread Starter
 
My HF Map location
Join Date: Mar 2008
Location: Canby, Oregon
Default

Hey Splitboarder,

What I found was that level on the workbench wasn't necessarily what would be level for level hover.

Messing around on the workbench I have reset auto trim and had to re-trim when hovering.

I too thought "Why not just auto trim when it's "level" on the work bench"

HC needs to see averages of stick movements over 8 seconds to know what average is.

Careful after a bench reset as HC will add to or subract from Your stick inputs, it can be handful at first as we compete with each other, so you may have to do a quick trim and then a more refined trim.

I'm finding now at the field I'm fusing with auto trim if I see a tendency for the bird to want to drift in one direction.

Training gear was a must!

I think your good for another go at it!

The folks who mentored us can add a more in depth explanation

My gyro gain for the tail is happy at 8 any more than that and heli had the tail jitters.

But for now, that's my story and I'm stickin' to it

Mel
__________________
When the people find that they can vote themselves money, that will herald the end of the republic.
~Benjamin Franklin ~
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Last edited by Navigator53; 03-08-2010 at 10:44 AM..
Navigator53 is offline        Reply With Quote
Old 03-08-2010, 02:54 AM   #105
Trooper
Registered Users
 
Posts: 466
 
My HF Map location
Join Date: May 2007
Location: Somerset, UK
Default

Quote:
Originally Posted by splitboarder View Post
I decided to simulate a hover on my kitchen table by putting in a bit of input to the aileron to keep the swash level. After 8 seconds I hit the auto trim.
The swash now is level at 50, 0 and 100 percent stick input. I have 0 degree pitch at 50% and -10 on zero and +10 at 100 percent

All the swash movements are correct, the swash responds correctly in horizontal mode I wil be using the internal gyro with gain at 21 percent in heading hold mode only.

All my servos look good on the PC tabs

What happens if my heli is a bit tail heavy? Im guessing I still have to hover for 8 sec and autotrrim again correct?

I think I may be ready again



Now if it will stop raining
What sort of readings do you get in the Autotrim settings on the RC & Trim tab? If they are less than 50 then you should be good to go. Ideally they should be as close to zero as possible. Once you start to fly and use AT they will change each time.
Personally I found that leaving the values set from the bench test, when it is reasonablly level, will prevent the sudden initial correction when you use AT the first time you fly.
Gyro gain sounds about right at 21%.
If your heli is slightly tail heavy, HC will correct for this. to a certain extent. If you find it drifts in any one direction, constantly, then you can adjust the sensor position by tilting it.
Get into the habit of AT every time you take off and do it a couple of times to fine tune.

Ian
Trooper is offline        Reply With Quote
Old 04-14-2010, 05:33 PM   #106
Navigator53
Registered Users
 
Posts: 2,137
Thread Starter Thread Starter
 
My HF Map location
Join Date: Mar 2008
Location: Canby, Oregon
Default Decent AP of building

Wind was a little too gusty but since it wasn't letting up, I went for it anyway.

I really had to trust Helicommand because the heli was a spect in the sky.

With the wind, I had to coax it back down, couldn't take my eyes off the bird, but it felt like my left stick was about 0 or sometimes minus a degree or 2.

Looking at the bottom that far up, it's harder to tell if it's coming down or not



Hey, I know it's ugly, but it's paid for

__________________
When the people find that they can vote themselves money, that will herald the end of the republic.
~Benjamin Franklin ~
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Navigator53 is offline        Reply With Quote
Old 04-14-2010, 05:44 PM   #107
nightflyr
Registered Users
 
Posts: 14,975
 
My HF Map location
Join Date: Jan 2009
Location: Long Island, NY
Default

Nicely done Mel
__________________

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

nightflyr is online now        Reply With Quote
Old 04-14-2010, 05:58 PM   #108
FLAME747
Registered Users
 
Posts: 867
 

Join Date: Sep 2009
Location: KATY TX
Default

Great Job Buddy, I am right behind you. playing catch-up
__________________
My fantasies of flying a Heli, is better than the reality.
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


JR X9503.FunJet Ultra, Scimitar, Stryker F27C and Q, DogFighter, mCPx
FLAME747 is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Electronics Support > Flight Stabilization


Flight Stabilization Flight Stabilization

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Copyright © 2004-2011 - William James - Helifreak.com