BEC question

[gates59]

Well I'm just starting out with crawling. Just got my venom in today. I have been reading on here that I should get a bec. I wish someone would have said that I had to get one not that I should get one. I got a cheap duratrax speed controler shipped with my venom to start with and noticed that most speed controllers do not have a bec on them. At least there are no extra wires to power my receiver. Now I have to wait to look around to find a good one and figure out how to intall one. I guess I have to put my build on hold for a while now and do more reading. Oh ya the duratrax I got was the 1059.

[gerr]

you need the wires that go from esc to the rx, it usually looks like a servo extension just bring what you have to the hobby shop and im sure they can find the wires you need for a couple bucks

[gates59]

I think I got it figured out. I will buy a bec though. Time for more shopping. Lots to choose from. Hope I don't mess this up now.

[Chappy4o]

Check out rmdw's t's & t's. . . A lot of good info there and it shows exactly how to wire it up then check out my build thread and look at the last page I have a cool jumper that makes it easy to wire it up

[gerr]

castle bec and programming link

[gates59]

Originally Posted by gerr

castle bec and programming link

Programming link for a bec. Boy do I have lots to learn. I thought it was only for a speed controller.

[Chappy4o]

Originally Posted by gates59

Programming link for a bec. Boy do I have lots to learn. I thought it was only for a speed controller.

The castle link allows you to adjust the voltage output of your BEC. they come stock at 5.2v output but if your servo will take it you can usually crank it to 7v on 3cell lipo

[venomcrawlerdud]

hey chappy, im just woundering do you know how high i can go up to on my servo. i have a 7955 tg hitec servo and i want to be able to set it at 6v but if i can i ould like to set it at 7v. do you know how high i can go with that?

[Charlie-III]

Originally Posted by venomcrawlerdud

Hey Chappy, I'm just wondering, do you know how high I can go up to on my servo? I have a 7955 tg Hitec servo and I want to be able to set it at 6v, but if I can I would like to set it at 7v. Do you know how high I can go with that?

The HiTec 7955tg is rated for 6.0VDC max. I know, I have one.
I actually run it @ 6.5VDC, but I realize I "may" shorten it's life a bit.

You can set it to whatever you want, but exceeding the 6.0VDC input will shorten it's life.

[granborismo]

Originally Posted by gates59

Well I'm just starting out with crawling. Just got my venom in today. I have been reading on here that I should get a bec. I wish someone would have said that I had to get one not that I should get one. I got a cheap duratrax speed controler shipped with my venom to start with and noticed that most speed controllers do not have a bec on them. At least there are no extra wires to power my receiver. Now I have to wait to look around to find a good one and figure out how to intall one. I guess I have to put my build on hold for a while now and do more reading. Oh ya the duratrax I got was the 1059.

You dont "Need" a Bec, almost every esc has one in built, your duratrax esc that you have bought has a Bec in it, but it is only rated 5volts at 1amp. the benefit of having a castle bec is you can run 10amps and adjust the voltage to suit your servo if you have a high power servo.

Your crawler will still work, you just may be lacking in the steering strength without running a more powerful bec, but it all depends if your servo is powerfull enough anyway.

hope that helps

[Charlie-III]

Originally Posted by granborismo

You dont "Need" a Bec, almost every esc has one in built, your duratrax esc that you have bought has a Bec in it, but it is only rated 5volts at 1amp. the benefit of having a castle bec is you can run 10amps and adjust the voltage to suit your servo if you have a high power servo.

Your crawler will still work, you just may be lacking in the steering strength without running a more powerful bec, but it all depends if your servo is powerfull enough anyway.

hope that helps

True.

You get an idea you need an external BEC when you load the steering and the rig quits working. You usually see the RX lights go off until you unload the front wheels.
This is what I found, adding a CC BEC resolved that issue.

If you're just having fun, maybe you can deal with the occasional issue.
If you're comping, it becomes a major deal that requires you to "touch" your rig which adds up points quickly.

[Chappy4o]

Originally Posted by Charlie-III

The HiTec 7955tg is rated for 6.0VDC max. I know, I have one.
I actually run it @ 6.5VDC, but I realize I "may" shorten it's life a bit.

You can set it to whatever you want, but exceeding the 6.0VDC input will shorten it's life.

+1 . . . . i have a hitec 7954SH which is rated at 7.4v max . . . so when i go 3cell i will program my BEC at 7 or 7.4v which should get me in the neighborhood of the rated 403oz. of torque.

[gates59]

Thanks for all the reply's guys. I guess when I'm done building I will try it out and see how it works first and see if I need one. I was thinking that my speed controller did not have a bec because there was no power wire to attach to my receiver. I'm use to the tamiya speed controllers that have a seperate wire for power.

Also I did not think there were going to be so many small screws building this thing. What a pain. Well the tires are the worst. Has no problems with the tranny like others said they had. Thanks again guys.

[Chappy4o]

you made sure to install the motor before you mounted the trans to the chassis right?

[gates59]

Originally Posted by Chappy4o

you made sure to install the motor before you mounted the trans to the chassis right?

I did not get there yet but thanks for that. I did read that somewhere.

[bluenosegoat]

I didnt see it mentioned but if you decide on a Castle Bec and purchase from Holmes Hobbies he will pre program it for you to what ever voltage you like. That way you dont have to get a castle link for one adjustment. I got mine programed for 6v and love it. Holmes shipping is way fast too!

[Shawn's SS]

Originally Posted by bluenosegoat

I didnt see it mentioned but if you decide on a Castle Bec and purchase from Holmes Hobbies he will pre program it for you to what ever voltage you like. That way you dont have to get a castle link for one adjustment. I got mine programed for 6v and love it. Holmes shipping is way fast too!

Damn, wish I had known this. Now I need to find a local with a castle link. I bought mine from the LHS.

[CREEPERBOB]

I'VE GOT 2 BEC's TO GET SET UP AND MY LHS DOES'NT DO IT ,THEY WANT TO SELL THE LINK BUT I CANT SEE THE $28.00 RIGHT NOW.

[Chappy4o]

Originally Posted by CREEPERBOB

I'VE GOT 2 BEC's TO GET SET UP AND MY LHS DOES'NT DO IT ,THEY WANT TO SELL THE LINK BUT I CANT SEE THE $28.00 RIGHT NOW.

send it here bob ill program it for u