(First Build) LY Evo 36 | 12s2p | Dual 6374 | Dual FocBox v1.6 | TB 110 72A | TB drivetrain

how many amps are you throwing at each BoxOfFoc?

Lol. 15amps each side -7.5 regen. 60 amps motor max. -60 amps motor max brake.

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there may in-lie your problem… how long you wanna throw 120amps total 60 a side thru a 2p or 3p battery…

and I don’t have the specs… but I’m thinkin’ 60amps on a boxOfFoxes may be living on the edge…

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Does motor max 60a mean that I am constantly drawing 60 amps from the battery? I thought it just meant that the amount of current passed to the motors is not alowed to exceed 60 amps.

you cannot draw more amps than the battery (and BMS) will allow… but somehow your conundrum of sagging 10 volts on an uphill pull and cut-outs are starting to come to the surface…

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Ohh okay. These are my settings

What should I safely set these to?

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honestly… I feel those settings are fine…

IMHO the battery pack just can’t support the amp draw…

a low P-group battery will sag more… mBoreds batteries are fukked… and a failed P-group can lead to your problems…
a 10s3p pack will leave you in almost virtually the same spot… low amp continuous draw

I’d get more P-groups or higher amp draw batteries…

but I’m a k00k…

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Yea I think the motor max current is alright sonce @b264 had safely suggested these values. I’ll just go ahead and buy myself a more professionally made battery

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psa warning

My answers are ā€œalmost alwaysā€ more reliable around noon-time

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:joy::joy: Haha

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sometimes maths are hard late in the evening!

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Iā€¦ā€œalmost alwaysā€ have to unfukmyself in the morning when I think clever shit late at nite…

:crazy_face: :crazy_face: :crazy_face:

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That build is lovely. 12s4p is where you need to be.
Minimum. Nice details on the finish.
Love me an evo.

As for batteries. Multiply voltage by amps to get watts.
12s2p 30q is a max 40 amp battery so 42 x40 =1680
10s3p 40t is a max 45 amp battery so 36 x 45 =1620

12s wins. Although the 40 t will give you better range than the 30q but as you will be pushing it hard er then maybe not.

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Cant a 10s3p output 75 amps max? I heard that you can only safely run it at 25 amps per cell even though it is rated at 35 amps per cell.

Motor max is very different from battery max you fuckin k00k. 15 battery amps and 60 motor amps per side will be fine.

Have a read in here. Battery Amps, Motor Amps and Duty Cycle... Please Explain

@kcheng5 don’t mind Daddy @Dareno, he’s been drinking. 10s3p 40T will happily do 75a total.

Fuck me, the misinformation in here is rife.

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Haha, seems like everyone is getting crazy during the night. Thanks for clearing things up mate.

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I think I might have found out why my board is shutting off. I found where the switch I bought off of ebay was sourced from … It’s from maytech for $18.90 and the guy sold it to me for $70 :angry: . Anyways, it is rated for 50V so could it be that when I throttle to 100%, maybe the voltage exceeds 50V for a split second and then shuts the board off?

Not saying the switch isn’t a piece of shit, but doubt that’s your problem. Voltage drops when you throttle and amps go up. The lower number of cells in parallel and the shittier the cells, the more you’ll see it sag. The most being at full throttle up hill. Hence, why everyone immediately jumped on sag vs voltage cutoffs as your issue.

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Thanks Al…

:crazy_face: :crazy_face: :crazy_face:

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:laughing::laughing::laughing:
Sorry @kcheng5. Got my cells mixed up due to alcoholism.
12s is still better tho…

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