Fun, Learning, Friendship and Mutual Respect
START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 500 Class Electric Helicopters


500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


Reply
 
Thread Tools Display Modes
Old 07-31-2012, 07:39 PM   #781
Grimmy
Registered Users
 
My HF Map location
Join Date: May 2012
Location: Iowa
Default

So I am waiting for some building parts to continue assembling my trex500, and have been trying to read through the pages of this thread. After many headaches from reading so much, I can't keep straight what I've all read.

I understand connecting the boom to the main drive bearings, and the same in the tail. Should I use a wire and connect the whole thing to the main shaft bearings as well?

I did order some different bearing holders, some metal ones, in anticipation that I should have continuity through all of these parts.

Just need confirmation. Thanks.
Grimmy is online now        Reply With Quote
Old 09-18-2012, 12:30 PM   #782
Burst
Registered Users
 
My HF Map location
Join Date: Jan 2011
Location: Sweden
Default

HobbyKing have a metal tail boom holder for 11$ to the T-rex 500, thats will make grounding easy.
Burst is offline        Reply With Quote
Old 09-18-2012, 10:28 PM   #783
mhills51
Registered Users
 
Posts: 2,137
 
My HF Map location
Join Date: Apr 2007
Location: Kansas City, MO..
Default

I have a problem with this title lol! Older DSM is unquestionably the number 1 brown out issues lol!!
mhills51 is online now        Reply With Quote
Old 10-05-2012, 02:07 AM   #784
xpftp
Registered Users
 

Join Date: Mar 2011
Location: United States
Default

its so easier then you think and cost not a dime to fix this issue ..


take a wire about 4 inchs long ... sstrip one end and put it between boom and the stab wing brace..

take other end strip it 1/4 inch

zip tie to boom supports so the rest of the wire loops down and hangs downward
done deal ..

this is done on real airplanes all the time as in the glass tubes with the wire inside for lighting strikes .. and such

it works great ..


__________________
B400 gotta love the old girl / 250 / 500 ..
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Turn Up The Juice. See What Shakes Lose
xpftp is offline        Reply With Quote
Old 12-15-2012, 03:18 PM   #785
Turttle
Registered Users
 
Posts: 1,034
 

Join Date: Sep 2011
Location: ca
Default

Number one may be drawing more amps than your bec will pute out.Ive never had any static problems with my belt driven heli running spektrum but I also take a q tip and oil my belt with cylicone base oil.If you are running high demanding servos and a heavy pitch set up especially if running an fbl unit imo its a good ideal to run a capacitor to hold more amps.This is a known problem with the 500 size.CC makes an add on capacitor and I also seen some on ready hly.
Turttle is offline        Reply With Quote
Old 01-31-2013, 01:47 PM   #786
Turbojoe
Registered Users
 
Posts: 288
 

Join Date: Jan 2006
Location: Mesa, Arizona
Default

I just drug out my EXI 500 CF/Metal version to finish it up and get her in the air finally. Because I haven't done anything with a heli in quite a long time I've been doing a lot of reading. Ran across some posts on static with belt drive birds again. I went ahead and grounded my Beam 450 back when I built it a few years ago but never really checked for static beforehand. Now I've seen a few videos using voltage detection pens. I got out my Fluke VoltAlert pen and ran it over the entire EXI 500 while spun up (without blades). No indication of any voltage anywhere EXCEPT the main gears and a smaller amount at ESC output and the motor. The pen lights up solid and bright at the gears only. Kinda hard to ground the plastic. I'm guessing the static buildup is due to wind friction. I guess a thin brass strip could be set up to rub the gear and ground it to the bearing block. Now to be fair I have to say my Fluke is the 90-600volt version. There are some out there that read as low as 20 volts. It would be interesting to know what rating the tool had that was used in the videos. I don't have any issues with brown out during bench tests but you never know. She hasn't been in the air yet. Anyone else seen this gear static phenomenon?

Joe
__________________
I reject your reality and substitute my own.......
Turbojoe is offline        Reply With Quote
Old 02-19-2014, 03:20 PM   #787
Relisys190
Registered Users
 
Posts: 1,097
 

Join Date: May 2011
Location: Clearwater, Florida
Default

Even with new 2.4 radio tech, I still took the time to properly ground my boom and associated hardware with my motor mount block. I did this very simply and easy with a single strand of wire from a CAT 5 cable I had laying around. You even get to pick the color you like! )

I ran it from the boom, down the boom support (wrapped with shrinkwrap) and then cleanly inside the frame to the motor mount. I use a digitial meter to check for continuity from my rudder shaft, to my motor shaft. BEEEEEEEP. Everything checks good. It gives me a little piece of mind too knowing that i will not have any ESD problems.

Thanks for the tip!

__________________
__CITIZEN NUMBER : 429__||| 4503D ||| Trex 500 FBL ||| Trex 500 Scale (under construction..)
Relisys190 is offline        Reply With Quote
Old 03-04-2014, 02:32 AM   #788
Diggiz
Registered Users
 

Join Date: Jul 2011
Location: Hastings New Zealand
Default

Hey Relisys, are you able to take a pic further back of the rest of the static wire?
With the shrink wrap and where it runs?
Thanks Gav
__________________
Tarot 500 Fbl with Robird G31
Tarot/Align 450 Fbl with Tgz380
Dx6i
Show that bird who is Boss!
Diggiz is offline        Reply With Quote
Old 03-04-2014, 09:07 AM   #789
Relisys190
Registered Users
 
Posts: 1,097
 

Join Date: May 2011
Location: Clearwater, Florida
Default

Quote:
Originally Posted by Diggiz View Post
Hey Relisys, are you able to take a pic further back of the rest of the static wire?
With the shrink wrap and where it runs?
Thanks Gav
Yup sure thing. I'll take a pic or two when I get home today
__________________
__CITIZEN NUMBER : 429__||| 4503D ||| Trex 500 FBL ||| Trex 500 Scale (under construction..)
Relisys190 is offline        Reply With Quote
Old 03-04-2014, 08:41 PM   #790
Relisys190
Registered Users
 
Posts: 1,097
 

Join Date: May 2011
Location: Clearwater, Florida
Default

Diggiz,

So I took a section of blue cat5 Ethernet cable. Strip the blue part back and you're left with several strands of cool colored copper wire. Pick a color!

I've attached a few photo's let me know if you have any questions. I doubt i'll ever have a static problem with 2.4ghz, BUT i'd rather not take a chance with a several hundred dollar flying lawnmower.

Here you can see where it's attached to the motor mount screw :


[B]Here is where it transitions up a boom support wrapped neatly and held with shrinkwrap at each end[/B] :



Here's another shot running up the boom support with shrinkwrap :


And finishing off with more shrinkwrap and finally attaching to a screw holding the metal tail assembly in place.




Hope this helps, I find the telephone/data/internet cable works best because it's very small wire. Check for continuity using a meter and be sure you have contact from metal tail shaft all the way to metal motor mount. You'll never have static issues with this.

-Markus
Attached Thumbnails
Click image for larger version

Name:	photo_1.jpg
Views:	102
Size:	76.5 KB
ID:	492303   Click image for larger version

Name:	photo_2.jpg
Views:	99
Size:	59.7 KB
ID:	492304   Click image for larger version

Name:	photo_3.jpg
Views:	203
Size:	51.5 KB
ID:	492305   Click image for larger version

Name:	photo_4.jpg
Views:	198
Size:	67.6 KB
ID:	492306  
__________________
__CITIZEN NUMBER : 429__||| 4503D ||| Trex 500 FBL ||| Trex 500 Scale (under construction..)
Relisys190 is offline        Reply With Quote
Old 03-04-2014, 09:22 PM   #791
mhills51
Registered Users
 
Posts: 2,137
 
My HF Map location
Join Date: Apr 2007
Location: Kansas City, MO..
Default

This may help, but I have read that a static discharge big enough to make you system brown out would burn that wire in half. So here is hopping you don't get a second one in flight.
__________________
Micah
mhills51 is online now        Reply With Quote
Old 03-05-2014, 03:03 AM   #792
Diggiz
Registered Users
 

Join Date: Jul 2011
Location: Hastings New Zealand
Default

Thnks Relisys.
Awsume pics mate. Thanks a lot. Ps where did you get your lower boom support brace thing? That hold your boom struts together?
__________________
Tarot 500 Fbl with Robird G31
Tarot/Align 450 Fbl with Tgz380
Dx6i
Show that bird who is Boss!
Diggiz is offline        Reply With Quote
Old 03-05-2014, 01:55 PM   #793
Relisys190
Registered Users
 
Posts: 1,097
 

Join Date: May 2011
Location: Clearwater, Florida
Default

Quote:
Originally Posted by mhills51 View Post
This may help, but I have read that a static discharge big enough to make you system brown out would burn that wire in half. So here is hopping you don't get a second one in flight.

That would be a MASSIVE spark. I'd love to see it
__________________
__CITIZEN NUMBER : 429__||| 4503D ||| Trex 500 FBL ||| Trex 500 Scale (under construction..)
Relisys190 is offline        Reply With Quote
Old 03-05-2014, 01:56 PM   #794
Relisys190
Registered Users
 
Posts: 1,097
 

Join Date: May 2011
Location: Clearwater, Florida
Default

Quote:
Originally Posted by Diggiz View Post
Thnks Relisys.
Awsume pics mate. Thanks a lot. Ps where did you get your lower boom support brace thing? That hold your boom struts together?
Im unsure, it was on the heli when I purchased it used. It's a very trick little part. I'd suspect KDE or other manufact. would carry them.
__________________
__CITIZEN NUMBER : 429__||| 4503D ||| Trex 500 FBL ||| Trex 500 Scale (under construction..)
Relisys190 is offline        Reply With Quote
Old 03-05-2014, 05:26 PM   #795
Gladius
Registered Users
 
Posts: 1,074
 

Join Date: Nov 2012
Location: Lusby, MD
Default

Quote:
Originally Posted by mhills51 View Post
This may help, but I have read that a static discharge big enough to make you system brown out would burn that wire in half. So here is hopping you don't get a second one in flight.
The beauty of the wire though, is that it continuously discharges any charge that builds up, so you never get enough to create a discharge that powerful.
__________________
Amount spent in my ongoing pissing match with gravity: $6689
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Guess who's winning...
<> Trex 600 ESP, Trex 500 ESP FBL, MCPX BL <>
Gladius is offline        Reply With Quote
Old 03-05-2014, 09:16 PM   #796
mhills51
Registered Users
 
Posts: 2,137
 
My HF Map location
Join Date: Apr 2007
Location: Kansas City, MO..
Default

Quote:
Originally Posted by Gladius View Post
The beauty of the wire though, is that it continuously discharges any charge that builds up, so you never get enough to create a discharge that powerful.
I agree! I just wish these guys making new radios would think about it a bit
__________________
Micah
mhills51 is online now        Reply With Quote
Old 03-31-2014, 07:23 AM   #797
rob78
Registered Users
 
My HF Map location
Join Date: Mar 2013
Location: Tennessee
Default

Quote:
Originally Posted by Relisys190 View Post
Im unsure, it was on the heli when I purchased it used. It's a very trick little part. I'd suspect KDE or other manufact. would carry them.
That's a microheli part. I had one on the trex I sold.
rob78 is offline        Reply With Quote
Reply




Unregistered
Go Back   HeliFreak > R/C Helicopter Support > 500 Class Electric Helicopters


500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.

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