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Old 06-23-2012, 01:02 PM   #1
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Default AE-2 and hi-torque servo

I had an issue with the stock servo on my Wraith (broke it.....lol) so I replaced it with a Blue Bird BMS-630MG servo I had. Will running this servo cause any problems with the stock ESC/BEC?

Thanks
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Old 06-23-2012, 01:21 PM   #2
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Default Re: AE-2 and hi-torque servo

A ~200oz servo will most likely need a stand alone BEC.
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Old 06-23-2012, 01:54 PM   #3
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Default Re: AE-2 and hi-torque servo

Quote:
Originally Posted by SINister View Post
A ~200inoz servo will most likely need a stand alone BEC.
+1.

My "rule of thumb" for most ESC's is, "when over ~200inoz, get an external BEC."
The Holmes BR-XL can go above that, but even it has it's limits.
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Old 06-23-2012, 02:13 PM   #4
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Default Re: AE-2 and hi-torque servo

The stock ESC has a 5v BEC so the servo is only capable of about 185oz/inch. Is this still considered too close to the max?

Anyone have a recommendation for a decent steering servo?
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Old 06-23-2012, 02:17 PM   #5
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Default Re: AE-2 and hi-torque servo

Quote:
Originally Posted by ScottinBend View Post
The stock ESC has a 5v BEC so the servo is only capable of about 185oz/inch. Is this still considered too close to the max?

Anyone have a recommendation for a decent steering servo?
Volts is one thing, amps is a bigger thing.

Try it out, see what you think.

It may work fine for your normal rig use, so be it.
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Old 06-23-2012, 02:39 PM   #6
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Default Re: AE-2 and hi-torque servo

AE-2 spec is 5v and 2.0amp peak.....

I don't mind using the proper BEC or a smaller servo, just want to make sure what I do do is best for my Wraith.
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Old 06-23-2012, 03:25 PM   #7
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Default Re: AE-2 and hi-torque servo

Quote:
Originally Posted by ScottinBend View Post
AE-2 spec is 5v and 2.0amp peak.....

I don't mind using the proper BEC or a smaller servo, just want to make sure what I do do is best for my Wraith.
Your servo (as linked in post #1) is fine, but in a tight bind you are pushing the limits of the ESC BEC.

As I stated before, try it and see.
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Old 06-23-2012, 03:30 PM   #8
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Default Re: AE-2 and hi-torque servo

What indications would I have if this setup is causing problems..........heat, glitching, short battery run time (2S-5000mah 40C lipo)? I ask because I am not familiar enough with the car to know if something is creating a problem or not.
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Old 06-23-2012, 03:48 PM   #9
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Default Re: AE-2 and hi-torque servo

I like the specs of the BR-XL. Would this be an easy "plug and play" install on the Wraith?
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Old 06-23-2012, 04:22 PM   #10
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Default

Yes the brxl should be mostly plug and play, it mainly just needs a battery connector soldered on


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Old 06-23-2012, 04:25 PM   #11
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Default Re: AE-2 and hi-torque servo

What most people see is the steering becomes unresponsive or the truck acts like it loses power until the load is gone.

You can't go wrong with a Hitec but there are other good servos out there too.
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Old 06-23-2012, 08:37 PM   #12
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Default Re: AE-2 and hi-torque servo

i did what charlie said.. didnot work. servo was glitching. added a cc bec. works great now
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Old 06-25-2012, 07:24 AM   #13
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Default Re: AE-2 and hi-torque servo

I ran a Hitec 5955 with the AE-2 for a few packs while I was waiting for my CC BEC and it was ok. Seemed a little slow and weak. When I added the BEC, I set voltage to 7v and the servo came to life. I think the 5955 is around 400oz at 7v though. It's enough to flop the Wraith over when the front tire is stuck in a hole
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