Throttle cut out when turning

[jayrod24ky]

Ok so today I had my esc replaced with a castle sidewinder 3 and also has a castle fan installed for the esc and another for the motor. When I got back home, I was running it out in the yard and when I turn, the throttle and servo kick out intermittently. I thought my battery might have been low. While I was charging the 3s battery I put in my 2s and everything ran perfectly. I just thought my 3s was going dead. When the 3s was fully charged, I put it back in and it done the same thing again. Anybody know what would be causing this. I threw in a buddy's venom 3s and it did the same thing. I made a post about this earlier but it was deleted by me by accident.

[jayrod24ky]

Forgot to mention it has a savox sc 0251 servo

[cullen colapietro]

It is likely the bec can't keep up on 3s. Try an external bec and see if it still happens.

[gdb85]

X2 ^^^

Definitely needs an external bec. Castles internal bec is weak and you're using a voltage robbing little bugger of a servo.

[jayrod24ky]

Ok. I'm new to all this. Which bec would you all suggest and since my ports in my receiver are all full, do I tie my fans into the bec or my servo?

[RustenPaines]

Basic castle BEC
Castle Creations | CC BEC and CC BEC Pro

Use a receiver bypass adapter to have it power your steering servo only. Or a double to also include the fan.

Receiver bypass adapter, or u can make your own. Point is to run the ground and signal from the RX to the servo and keep the power run just between the bec and servo.
CreationFab - Other Plugs

[Johnnysplits]

You can also lose the fans too...not necessary.

[the_ocho]

Originally Posted by Johnnysplits

You can also lose the fans too...not necessary.

I would highly recommend keeping the esc fan at least. The sv3 is the same esc as the ae3 that came stock. They will over heat with a 550 motor in a big heavy 4x4 truck.

my ae3 will overheat in 5 min on 3s in the rock with stock gearing.

[cullen colapietro]

I'm running my MMP on 6s and the fan doesn't even come on, but that's quite a different scenario.

[the_ocho]

Originally Posted by cullen colapietro

I'm running my MMP on 6s and the fan doesn't even come on, but that's quite a different scenario.

haha yeah the MMP is a little better built than its cheaper counterpart.

[jayrod24ky]

I'm gonna keep the fans. They've definately extended my run times before getting hot for sure. I ordered the no brainer bec before I seen any of these replies. Hopefully it will take care of my problem. I was going to replace my esc with another factory one but it was 109 bucks. Then I almost pulled the trigger on a castle mamba max pro sct motor and esc combo but not being waterproof kinda bugged me. Then i went with the fans which aren't waterproof but oh well. It is what it is.

[dasco]

Originally Posted by jayrod24ky

I'm gonna keep the fans. They've definately extended my run times before getting hot for sure. I ordered the no brainer bec before I seen any of these replies. Hopefully it will take care of my problem. I was going to replace my esc with another factory one but it was 109 bucks. Then I almost pulled the trigger on a castle mamba max pro sct motor and esc combo but not being waterproof kinda bugged me. Then i went with the fans which aren't waterproof but oh well. It is what it is.

The fans are a must on 3s trust me....and the bec is the problem ..I run that setup and my motor did the exact same thing . Installed the castle bec..all fixed you will need to program the castle esc to 6.0v with the castle link. Well worth the effort with this servo!!