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11-09-2005 10:31 PM  12 years agoPost 1
Red9301

rrApprentice

London UK

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Please can someone assist?

I have just built my new T-Rex, mechanically sorted and the radio equipment is fine, except the instructions for wiring up the battery, motor and speed controller are somewhat lax (read non-existant) and being a nitro head, I'm getting a bit confused.

Heres the wires I have poking out;

Please can anyone give me pointers as to what I need to attach to where?

Any help will be much appreciated

ta

Red

Making crashing an art form...

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11-09-2005 11:17 PM  12 years agoPost 2
Rickenbacker

rrApprentice

Örebro, Närke - Sweden

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Also try to route the wires from the speed controller to the battery and motor on the opposite side of the helicopter from all the servo wires and antenna. This helps minimise glitches by interference.

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11-09-2005 11:44 PM  12 years agoPost 3
Red9301

rrApprentice

London UK

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Thanks very much for the help. And to the chap who PM'ed me This place rules

Cheers

Red

Making crashing an art form...

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11-10-2005 12:58 AM  12 years agoPost 4
Alpine

rrVeteran

Lexington, Ky

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Red,

when you use the Deans on the battery..use the female on the battery side .

roberto.

Roberto Munoz
IRCHA #344

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11-10-2005 01:02 AM  12 years agoPost 5
dkshema

rrMaster

Cedar Rapids, IA

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Put the female part of the connector on the battery pack, the male part on the ESC. This will help prevent accidental shorts across the battery terminals that can potentially damage the LiPo and cause a nasty fire.

Dave

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11-10-2005 01:43 AM  12 years agoPost 6
Dr.Ben

rrMaster

Richmond, VA, USA

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Aw gee Dave...................it takes all of the excitement out of things when you put the female connector on the battery .

Ben Minor

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11-10-2005 02:11 AM  12 years agoPost 7
dkshema

rrMaster

Cedar Rapids, IA

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Once upon a time, when Tatone was making some of the early C-sized nicad glow starter batteries, I had the misfortune of putting one in my pants pocket at the end of the day and driving home.

The Tatone starter battery was nothing more than a mild steel bracket that the naked cell slipped into, with a small keyhole at the end of an extended tang. You'd put the glow plug post through the keyhole, then the + end of the battery simply butted up against the side of the cylinder head. No insulation, no recessed center post connector, just a bare nicad.

Anyhow, I got home, unloaded my car, had my arms full of starter, plane, radio, fuel jug, and other stuff. As I reached up to grab the handle to close the overhead garage door, I felt as if someone had sneaked up to me and put a blowtorch to my thigh. I hadn't had a second thought about putting the battery in my pocket -- until I put my car keys in with it. They shorted out the battery. I immediately realized what was going on, dropped all the stuff in my arms, reached into my pocket, grabbed the starter battery and branded my palm and fingers as I did so. I could hear the flesh sizzling and before I let go of the darn battery, I could see that its vent had opened up and it was spewing its electrolyte everywhere. I learned early in my career the virtues of protecting the terminals of a battery or other power supply.

That was just one fully charged 1200 mah nicad cell. A 3S LiPo pack would probably send you into orbit if you were to short out the plug!

Dave

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11-10-2005 02:24 AM  12 years agoPost 8
Alpine

rrVeteran

Lexington, Ky

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Yeah Ben..I guess you will want to put the male connector there just for the Excitement

Thanks for the help with the Ys91 at Ircha..

roberto.

Roberto Munoz
IRCHA #344

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11-10-2005 02:39 AM  12 years agoPost 9
spork

rrVeteran

Mountain View, CA

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Red,

I'm pretty new to the electrics too. I learned pretty quickly that electrics are significantly more prone to glitches - so it's more important to really get your wiring right. Here are some of the obvious pointers:

- Try to keep your RX and antenna clear of the ESC, servos, gyro, etc.
- To the extent possible try not to run servo wires past all those things on the way ot the RX.
- I like to twist all my wires going to the RX as tightly as conveniently possible for maximum noise rejection (the entire length of the wire).
- Probably the most common noise source is the ESC feeding directly back into the RX. It seems like most people take a few wraps around a ferrite just before the RX on this lead.
- Try to keep the wires between the ESC and motor as short as possible.

Like I said, I'm new to these too, so I'll look for others to correct me or add to the list.

RC

P.S. Those LiPo's are not to be trifled with : ) Don't let them discharge below 3V per cell. Only charge them on a LiPo charger (at less than 1C, and not when they're warm). Don't overcharge. Get a Thunder Power balancer - it'll pay for itself. You can ruin an $80 pack in one day.

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11-10-2005 02:45 AM  12 years agoPost 10
Gary Hoorn

rrKey Veteran

Annapolis Maryland USA

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Red,
As you have both an Align speed control and motor simply match the red, blue and black wires when you plug in the motor and it will run the correct way. The motor or the ESC should have come with some suitable connectors. Do put a female connector on the Lipos for safety. Deans Ultra connectors work well as do the Anderson Power Poles.
Gary

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11-16-2005 01:08 AM  12 years agoPost 11
Red9301

rrApprentice

London UK

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Hi all, thanks for all your help, everythings sorted now. Check me gallery for build report. Time to trim it out and give her a go. CCPM system was trickey to figure out, but im there now.

I'm kinda thinking this thing would be much safer with an on/off switch...

Cheers again

Red

Making crashing an art form...

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11-16-2005 01:15 AM  12 years agoPost 12
stpeteheli

rrApprentice

St. Petersburg, FL

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I'm kinda thinking this thing would be much safer with an on/off switch...
Make sure you enable and set up a throttle hold switch.

Swift C550, Z30A-800 11T, CC45HV, 7s MaxAmp - 8s eMoli, DX7

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11-16-2005 01:20 AM  12 years agoPost 13
Ozydego

rrKey Veteran

Westerville, Ohio

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Red, you might think about moving the ESC to a different spot. It does get hot, and needs circulation, plus the heat of the battery, could make for a bad situation.... I personally locate mine under the chassis right behind the motor hole..... I can see you have a lot of room left under the canopy, maybe think about trying to mount either the battery or the ESC diagonally under the canopy, just to keep them seperated a little if not completely relocating the ESC

But Honey, I can't live with just stock.....

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11-16-2005 10:02 PM  12 years agoPost 14
Red9301

rrApprentice

London UK

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thanks Ozydego, i have indeed reloacated the ESC as you describe.

cheers

Red

Making crashing an art form...

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