High or Low timing?

[Rusty_Noob]

Hi guys,

My Proboat progamming card for my Blackjack arrived today and I don't know what to set the motor timing too.

My blackjack is completely stock apart from trimmed and angled turn fins. I'm going to run 2 7.4v 5000mah 25c Lipo batteries in it.

I've set the programming card to

Lipo Battery
High Voltage cutoff (running lipo cells to 2.7v doesn't sound a good idea to me)
Slow Down Cut-Off type
Brake Off
Linear Throttle curve

Thanks for any advice given,

Jonny

[Rusty_Noob]

Sorry for posting in wrong section, my bad.

[bigpapa]

high timing

[Darin Jordan]

I use the high timing setting in all my boats... No issues so far. It's actually recommended in the ProBoat literature for 6-pole motors...

[Rusty_Noob]

Wow! Just ran it for the first time on Lipos and it is so much faster than on my Nimhs! I knew it would be faster but this much? Wow! Only have it on low timing at the moment but will crack it up to high when I get my new prop/hardware :)

[egneg]

Just wait and see what that new prop does!

[bigpapa]

octura x642 is a awsome prop for this boat

[Rusty_Noob]

Got an Octura X642 balanced and sharpened prop on the way from Egneg, I've also got some Fulllers hardware on the way too!

[bigpapa]

you will be all set up egneg does awsome work

[kookie_guy]

High Voltage cutoff (running lipo cells to 2.7v doesn't sound a good idea to me)

high cutoff at 3.0volts is still too low. You should be stopping at about 3.4volts.

[Rusty_Noob]

I stuck my batteries on my Battery Doctor when I got home after a run and the packs read 6.3 and 6.5 so each cell should be around 3.2 which is fine. The instruction leaflet that came with the batteries said to make sure they didn't go below 6v.

[kookie_guy]

I stuck my batteries on my Battery Doctor when I got home after a run and the packs read 6.3 and 6.5 so each cell should be around 3.2 which is fine. The instruction leaflet that came with the batteries said to make sure they didn't go below 6v.

that seems to be the accepted number for several manufacturers for some reason, but it's wrong. At 3volts, you discarged more than the recommended 80% of the pack, and although you will not see any difference right away, long term, your batteries will sustain damage. On rcgroups, there's a guy who has worked with lipos for a long time, testing their limits and such. If you keep the discharge to 80% or below, then your packs will have a long and happy life.

You mentioned your packs are 5000mah. So for the 80%, when you stick it on the charger, it should take 4000mah charge. Above that means you went above the 80%. I'm sure guys will tell you they run them down all the time with no negative impact. But this guy has done significant testing to prove otherwise.

[bwells]

Planning on using my new lipos today, Is the following chart correct for the programming card?

Programmer NiMH Lipo

Batt Nimh Lipo
cutoff voltage Low High
Cutoff type Idle Idle
Brake Off Off
Timing Low High
Throttle Linear Linear

[bwells]

Well, That did not work as I typed it, there was spaces between each entry. The settings for NiMH are what I'm currently using and the settings for Lipo are what I think is correct, It came out a little confusing, Thanks