Mamba Max fan mounting

[BrianG]

Originally Posted by Sylvester

Imo the mamba shouldnt be pushed at 5s or 16 cells.

I agree totally. In reality, I wouldn't go past 4s or 14 cells. Just the caps alone on the ESC are only rated for 25v and 5s is 21v on a full charge - a little too close for my liking and longevity.

[Procharged5.0]

I plan on running 12 cells, possibly 14.
I own 8-cell packs but would probably save them for when the MMM arrives.

Others here got me thinking 16 cells again....shame on you guys! :005:

[BrianG]

Heck, you might be fine running 16 cells - I personally wouldn't for the reason stated above. I like to keep my best-case (meaning highest possible voltage off the charger) voltage at least 25% lower than the component max ratings. That puts it to ~19v max if the caps can be used as a guage. Who know what the other components are rated for...

[Sylvester]

I can see where it would be like that, higher voltage less amps which = more watts. BUT, it is rated for up to 3s (4s in the manual;)) Bomb-proof, tell us how long it lasts running on 5s!

[RC-Monster Mike]

Interesting thing with the caps, Brian - the 18 cell Shulze controllers use 25.4v caps as well. In fact, most controllers aside from BK that are rated for under 20 cells use the 25.4v caps from what I have seen. BK uses 50volt caps for reference. All things being equal, I would suspect lower temps with higher voltage when geared for the same speed. And I always use a fan - cheap insurance IMO, though I agree that if a fan is NEEDED, then the setup needs work. :)

[neweuser]

Originally Posted by RC-Monster Mike

Interesting thing with the caps, Brian - the 18 cell Shulze controllers use 25.4v caps as well. In fact, most controllers aside from BK that are rated for under 20 cells use the 25.4v caps from what I have seen. BK uses 50volt caps for reference. All things being equal, I would suspect lower temps with higher voltage when geared for the same speed. And I always use a fan - cheap insurance IMO, though I agree that if a fan is NEEDED, then the setup needs work. :)

My 9920 never really needed a fan geared 16/51, on 18/51 it was a definate (like the bash). But true, very cheap insurance. It gives me more confidence I guess. I can't say I like to run them though.