My 5687 1100KV MAX6 / Castle Mamba X8S build (Outcast 8S EXB)

[sebcbien]

Hello, almost decided to pull the trigger on an Outcast 8S EXB
I have in my drawer a MAX 6 and I would like to buy a Castle 2028 1100KV (216€) to pair with it (instead of an hobbywing 5687 1100KV at 178€).
I will lose the sensored link but I will save almost 400€ on the ESC ... (the combo XLX2/2028 is at 600€ here )
Thanks for your advice !

 

[Rcproponent]

Honestly I don’t think the max6 is up to the task… maybe a max5 but certainly not the 6… that’s essentially a stock K8s esc..

 

[sebcbien]

Thanks for your advice !
The K8S stock has a max 6 or 5 ? not sure the way you wrote your sentence
Here is a K8S with Max6 and 1100KV from Aussie, without a fan on the motor:

As for my drivings, I'm not a "mad" driver and I do not have large spaces to go crazy speeds but I do like moderate jumps (to spare wrenching) and forest bashing.
Will the Castle 1100KV draw more amps than the hobbywing 5687 ?

 

[Rcproponent]

Thanks for your advice !
The K8S stock has a max 6 or 5 ? not sure the way you wrote your sentence
Here is a K8S with Max6 and 1100KV from Aussie, without a fan on the motor:

As for my drivings, I'm not a "mad" driver and I do not have large spaces to go crazy speeds but I do like moderate jumps (to spare wrenching) and forest bashing.
Will the Castle 1100KV draw more amps than the hobbywing 5687 ?

The max 6 is very similar to the stock kraton 8s esc the 160 firma.

 

[Raginbull74]

When you go and run castle to hobbywing remember the 2028 castle motors use 8mm pins on the leads whist the hobywing escs take 6.5mm
I ran into this problem. If you like to solder or have someone swap ends it will work. I'd also go with a max5. The 6 will be at it's limit. I run the 5687 hw/max5 and dig it. Any 1100kv motor is the sweet spot.

 

[Armarookie43]

Hello, almost decided to pull the trigger on an Outcast 8S EXB
I have in my drawer a MAX 6 and I would like to buy a Castle 2028 1100KV (216€) to pair with it (instead of an hobbywing 5687 1100KV at 178€).
I will lose the sensored link but I will save almost 400€ on the ESC ... (the combo XLX2/2028 is at 600€ here )
Thanks for your advice !

Go with the Max 5. The Max 6 cannot handle those big motors and the 30lbs beast.

 

[sebcbien]

Thanks for all your advises !

The Outcast 8S EXB is ordered !

I went ahead and bought a hobbywing 5687 1100KV, my finances are better without a castle combo .

As the Max6 and the 5687 1100KV are sold together I thing I can't go wrong if I gear conservatively.

I bought a 29T pignon and will start with the 47T spur gear if it's too slow for my taste I'll try the 39T spur when watching temps.
My reasoning was that I had the Max6 already and no other use for It. If it blows I'll buy a Max5.
And also I do not have big spaces around to run 100% for 20 minutes, it's more forest bashing and this asks less to the system.

I'll report when/if it blows

 

[Armarookie43]

Thanks for all your advises !

The Outcast 8S EXB is ordered !

I went ahead and bought a hobbywing 5687 1100KV, my finances are better without a castle combo .

As the Max6 and the 5687 1100KV are sold together I thing I can't go wrong if I gear conservatively.

I bought a 29T pignon and will start with the 47T spur gear if it's too slow for my taste I'll try the 39T spur when watching temps.
My reasoning was that I had the Max6 already and no other use for It. If it blows I'll buy a Max5.
And also I do not have big spaces around to run 100% for 20 minutes, it's more forest bashing and this asks less to the system.

I'll report when/if it blows

It might not blow, but it might hit thermal or cut off. But yeah.

 

[sebcbien]

Hello,
Got it, build it and I run it !
"Problem": The truck is crazy fast/violent with with 29/47...
I can wheelie at "any" speed

The lipos are heating much faster than in my X-MAXX and I can feel that it's over geared, at the slowest speed it's not cogging but it's not a smooth start either...

I took the Max6 from my X-Maxx (put back the velineon 8s in it).
The Max6 was on punch 3, I lowered it to 1 but not much difference.

Will a 25T pignon fit ?

Thanks !

...

 

[sebcbien]

Ok, looks like I'm not understood by many here
My point is that I do not want to do 60mph and triple backflips duperbash style (with this truck)..
I just want long 20 minutes session while not overheating my motor and lipos, just bashing, long jumps, light skatepark jumps etc.
Temp in my country is moderate and I would like also to avoid fans on the motor.
Is 25T pignon the way to go ? Lower ? Does it fit ?
Thanks

 

[Hammer Down]

Ok, looks like I'm not understood by many here
My point is that I do not want to do 60mph and triple backflips duperbash style (with this truck)..
I just want long 20 minutes session while not overheating my motor and lipos, just bashing, long jumps, light skatepark jumps etc.
Temp in my country is moderate and I would like.also.to avoid fans on the motor.
Is 25T pignon the way to go ? Lower ? Does it fit ?
Thanks

Yep a 25T will fit fine. I think the rtr O8s comes with a 19T stock, so you could gear even lower if you wanted. Lower gearing will definitely slow it down, cool it down and probably extend run times.

 

[sebcbien]

Hello,
Just received my 22T and 25T
The 22T seems perfect, the 25T is better than the 29T, but still a little too much speed/heat for me (I like to run without a noisy and breaking prone fan) Punch is at lowest settings and it still wheelies (on grass).
Temp is warm, but not too much after a run (20°C here now).

 

[sebcbien]

More test today, outside temp 22°C:

I modified the Max 6 setup with lowered temp cutoff at 105°C and with punch pushed to level 3.
Even at 105°C I had no cutoff, seem good ! I lowered to see if I was close to the max temp or not !

Wheelies are possible at medium speed and motor (without fan) is at 50°C after 10 min "hard on the trigger and wheelings on road".

I think this is the sweet "reasonable" spot (for me at least).

Hope this helps !

Battery side, my Zop power 7000 40C where drained to 3.9V and where luke warm.
Not bad, but I thing the O8 is too heavy for those lipos.

Do some of you have recommendation on "light weight" but capable batteries ?
Thanks !

 

[ItAintAtoy]

More test today, outside temp 22°C:

I modified the Max 6 setup with lowered temp cutoff at 105°C and with punch pushed to level 3.
Even at 105°C I had no cutoff, seem good ! I lowered to see if I was close to the max temp or not !

Wheelies are possible at medium speed and motor (without fan) is at 50°C after 10 min "hard on the trigger and wheelings on road".

I think this is the sweet "reasonable" spot (for me at least).

Hope this helps !

Battery side, my Zop power 7000 40C where drained to 3.9V and where luke warm.
Not bad, but I thing the O8 is too heavy for those lipos.

Do some of you have recommendation on "light weight" but capable batteries ?
Thanks !

Hi Sebcbien,

I find high-capacity lipo's almost a necessity for these heavy rigs, especially when you're upgrading motor/ESC.
I've tried 5000mAh a few times with the stock motor.
Since I put in a bigger motor I don't use them anymore. (5000mAh's get hot and puff quite fast)

Finding high-power and high-capacity lipo's is not that hard, Hobbystar has 9000mAh 100C's.
I'm enjoying the 11.000mAh G'Ace power-bricks.
Combining that with light weight however, that would be the holy grail IMO, those big lipo's are +900grams and not cheap.

See you're from Belgium too, where U located?

 

[sebcbien]

Hi ItAintAToy !
I'm from Rixensart and you ?
The Gen's Ace 11000 are almost 1Kg each ! Don't you find this truck is already too heavy ?
My "7000" Zop power are 540g each.
Of course they do not provide 7000mAh ... I measured them at 5000

 

[BashingBrian]

Have a look at CNHL batteries, I use the G+ 5000mAh 70c and my Outcast is a heavy beast
My setup is TpPower 1054kv / Max5

 

[ItAintAtoy]

Hi ItAintAToy !
I'm from Rixensart and you ?
The Gen's Ace 11000 are almost 1Kg each ! Don't you find this truck is already too heavy ?
My "7000" Zop power are 540g each.
Of course they do not provide 7000mAh ... I measured them at 5000

I´m from Beringen.
Let me know if you ever in the neigbourhood, you can give my lipos a try in your truck

It does sure make a heavy truck even heavier, but my 800kV motor seems to come alive more compared to my smaller lipos and that compensates a lot. (that could also mean my 5000/8000mAh´s aren´t top quality )

Maybe 11000 is overkill with stock electronics, also don´t know if they fit the Outcast´s slightly shorter chassis compared to the Kraton.
I like em a lot but I get that they are not ideal for every build.

 

[sebcbien]

Have a look at CNHL batteries, I use the G+ 5000mAh 70c and my Outcast is a heavy beast
My setup is TpPower 1054kv / Max5

This one ?
€ 70,32 49%OFF | CNHL Lipo 4S 14.8V Battery 5000mAh 70C G+Plus With XT90 Plug For RC Car Boat Part Helicopter Airplane Speedrun Truck Truggy
https://a.aliexpress.com/_mqFMElz

Looks interesting indeed

 

[BashingBrian]

This one ?
€ 70,32 49%OFF | CNHL Lipo 4S 14.8V Battery 5000mAh 70C G+Plus With XT90 Plug For RC Car Boat Part Helicopter Airplane Speedrun Truck Truggy
https://a.aliexpress.com/_mqFMElz

Looks interesting indeed

Yep.. those are the ones
I know they do a 6000mAh version too, but they are a weird shape and don't fit the battery trays very well..!!

Also check their website as it's cheaper than AliExpress

 

[Jimbobjr]

Definitely get some better batteries. They were really holding me back when I first started messing with the k8s. The batteries I was running in my other cars fine were discharging too quickly and would get hellish hot, even hard to unplug. I know guys love those CNHL batteries, I run the PowerHobby 7500mah but not sure if they are easy to get where you live.