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Other › Best way to ground the boom?
12-30-2009 11:55 AM  7 years agoPost 1
zmooth

rrApprentice

Athens/Greece

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How do I ground the boom on a L600 ? Pictures would be most welcomed

Small hole on the boom + nut&bolt ? I'm pretty sure solder won't stick on Alu boom
What about the QuickUK tailfin clamp which is Alu also ? Would it solve the static issues if I ground that to the motor mount ?

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12-30-2009 12:33 PM  7 years agoPost 2
clayboy

rrApprentice

phuket thailand

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1 cable from boom to cf plate for the tail and 1 from boom to motor mount. i use small self tapping screws for the boom. mount the screw on the boom on top or bottom in front and on the sides for the tail

i started with nothing and still got most of it left

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12-30-2009 02:13 PM  7 years agoPost 3
wiesenflieger

rrNovice

Southern Germany

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what kind of cable is used usually?

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12-30-2009 05:07 PM  7 years agoPost 4
SGrim80

rrVeteran

Lehigh Valley, PA

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Standard stranded hook up wire is what I used. I think I'm using 18 gauge.

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12-30-2009 05:23 PM  7 years agoPost 5
dahld

rrKey Veteran

Bakersfield, CA, USA

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The wire can be very small...not much current involved, just voltage.

We ground from the bolt that supports the belt idler pulley at the tail, to the boom just in front of the tail box.

We used to use a small screw to attach the wire to the boom, but the boom wall thickness is very thin, and the screw can strip easily. Also you have to be concerned with the positioning of the screw and the length of the screw, or else you'll ruin the belt running inside.

Now we just scrape off a small area of the black finish on the boom to get down to the aluminum (do it on the bottom so it doesn't show), and use a small zip tie to hold the wire end tight against the naked aluminum.

Then do the same at the other end of the boom, just before it goes into the frames. Run the wire from there forward along the frames and solder it to the negative side of the ESC's battery power input wire.

This way every time you plug-up a battery for flight, the belt and boom becomes grounded to the negative side of the battery pack.

Once we started this technique, we have never, and I repeat NEVER (as in not even once ), had a static problem since.

Hope this helps,

Dave

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12-30-2009 05:45 PM  7 years agoPost 6
danieldouville

rrApprentice

Napa, Ca USA

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my setup

this is what i came up with, this is before i scraped some of the black tail boom coating to expose the aluminum beneath. i havent had any issues yet

Omnidirection shocks and pursuades my soul to ignite

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12-30-2009 06:34 PM  7 years agoPost 7
4cyclic

rrKey Veteran

Montreal, Can. and northern Vermont

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Dave, great tip on grouding, thanks.
Would this be done on Futaba 2.4 as well or just those running the Spektrum/Jr 2.4. I hear the Futaba is less prone to static hits, although I ran both grounded with no issues.

Life is meaningful flying helis.

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12-30-2009 06:48 PM  7 years agoPost 8
gian

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AZ

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danieldouville

What's the other end of that skid wired to?

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12-30-2009 08:17 PM  7 years agoPost 9
HeliCSR

rrApprentice

Hesperia, Ca, US

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All you have to do is spray the belt with Tri Flow from the hardware store and your problem is fixed with static.

Static won't even be able to built up in the first place, so no ground is needed.

KILL it at the source, all its going to do is start charging up the skids along with the boom, and then wheres it going to go now?

When you land it will conduct from the skids to the ground, and really that kind of static travels along plastic to begin with so that wire is worthless take it from an electrical/systems engineer.

The static is cause by friction from the rubber belt on the plastic pully just like your rubber shoes on polyester carpet, touch the fridge handle and big spark fly's from your finger.

Static charge on a heli can leak off into the air, provide the air has enough moisture in it for this to happen.

Some days heli flys fine other days glitch.

So KILL the static st the source the BELT, spray it, is lasts for 100 flights. Then check it and spray it.

I fly and then I fly some more.
If it don't glitch then I won't crash.

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12-30-2009 09:52 PM  7 years agoPost 10
OICU812

rrMaster

Edson, Alberta, Canada

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http://helifreak.com/showthread.php?t=53700&page=14

...Once upon a time there were Nitros, flybars and frequency pins...

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