How high can you go on voltage?

[joeling]

Hi,

I just discovered this thread. I'm thinking (or on the verge of) going for HV & lower current setup. I live in the tropics & the heat from lower voltage - high current setup really causes havoc (fried 5 esc as proof). I am also also in the same shoes as knotted. I want to try 8S with a 12XL or 1940 10wind on a 1/8 buggy. The esc I'm comtemplating is either a BK3695 or BK36120. However, I'm wary of the 36120 as somehow, it can only do 42000rpm max. (info from Mike's store).

In addition, a Lipo under load is likely to drop some voltage. From my limited expereince looking at my eagletree data logger using some Kokam 20C cells, I see something like 3.2V per cell. If one is to use 8S under load, the total voltage will be approx. 25.6V. Is this logical ?

Personally, I think higher voltage & lower current is the way to go for a more stable system at least in my part of the world. For now, it's still all theory for me. I will try & find out soon enough.

8S 4000mah capacity should be similar to 4S 8000mah with less losses due to heat. that's waht I want to try out next.

Regards,
Joe Ling

Originally Posted by joeling

In addition, a Lipo under load is likely to drop some voltage. From my limited expereince looking at my eagletree data logger using some Kokam 20C cells, I see something like 3.2V per cell. If one is to use 8S under load, the total voltage will be approx. 25.6V. Is this logical ?

8S 4000mah capacity should be similar to 4S 8000mah with less losses due to heat. that's waht I want to try out next.

I plan to run 8S too. I hope the cells don't drop to 3.2V/cell. I guess it depends on the cells. I hope to get away with running 8S 2100 mah, but we'll see if that works out...

What do you think of the MGM 16024? You said in another thread that you fried one of them and I was curious if you found them to be problematic...

[pb4ugo]

Originally Posted by Aragon

I plan to run 8S too. I hope the cells don't drop to 3.2V/cell. I guess it depends on the cells. I hope to get away with running 8S 2100 mah, but we'll see if that works out...

What do you think of the MGM 16024? You said in another thread that you fried one of them and I was curious if you found them to be problematic...

I ran a MGM 16024. Would not recommend it to anyone. It may be the best controller in the wotld, but I wouldn't know because it's been off at MGM for repairs for four months now. Unfortunately I'm not an isolated case either.

[joeling]

Hi coolahndcountry,

Thanks for the info.

Hi Aragon,

I fried a 16160 (the one with lower voltage rating) while using a 5S. My impression is that the MGM cannot really take much abuse at all. BK took more abuse. There is no customer support to speak of. I emailed MGM direct & after a few correspondence, they just seemed to trail off & I get no response from them. In the end, I sent all the broken esc back to Mike & ask him to help.

So, I'm leaning more towards the BK.

Regards,
Joe Ling