Questions/builds thread.

15a switch but with 25a fuses. little tip i learned from jamie who built drumroll, he uses the same set up as me but with 19.2v insted on my 17.8v

I think its Carcinus he uses that in rather than Drumroll II, so if your looking for pictures thats where to hunt. I ran 2 drills on 19.2v on 15a electronize and they worked fine too.

I used them in the first Drumroll, and it was an idea I borrowed from Gary. The 25A fuses will blow before the controllers will, but if you were to use 15A fuses, they might be more likely to blow on a semi-regular basis and you'd get fed up of replacing them.

They're in Carcinus now, but without the fuses. One of the controllers needs fixed though, so might need to put them back in.

I see.

So, am I understanding this right?... I can run 2x 12v drill motors, over-volted to 18v, on a single 30a ESC?

If so, happy daaayyzzz! :o

yes but if your planning on using electronizes you'll need 1 on each side

Yep, that's what I have planned. Now to find some 18v batteries and a charger for cheap! Thanks again.

Will 18v NiCd drill batteries (cheapest option I think) be able to supply power to 4 12v drills and possibly another drill for a lifter weapon? If not, will NiMH?

I have looked at the thought of wiring two 8.4v, or maybe 9.6v NiMH packs in series but I don't know how I'd charge them? The problem it would seem for any kind of battery, is that the battery itself isn't very expensive, it's the charger for the battery that leaves a serious dent in the wallet.

Any ideas for getting 18v batteries (in the region of 2-3Ah), and a charger, for around 20-30 quid? Drills still seem to stand out to me but they're often NiCd and I don't know if they can supply enough amps for what I'd be asking for.

Hi.

Looking for a large car fuse (for protecting the whole bot) in the region of 75-100a. Would I be able to use a fuse as a removable link? When removed it completely disconnects power to the robot, and I can protect the thing at the same time. I am referring to something like this... http://www.ebay.co.uk/itm/100-AMP-100A- ... 4150aa2598

Also, anyone know if the name Dust Devil has been used? Sort of a play on Storm II/Tornado since this robot will effectively be a box with a lifter of some sort.

Thanks. :)

its not the best idea since your controller would probably blow at 100a and if it blew before your esc, then the bot will also be dead. just buy a bag of deans connectors and make the up that way :)

Yeah it occurred to me that a global ~100a fuse would be useless, since the chances of every motor in the thing stalling and reaching more than the fuse's rating are pretty low. Also suppose only the motors on the left side stall and due to some act of God reach 40a between them, the main fuse wouldn't blow and the ESC would be at risk.

I think I'll get a 40a fuse for each side, then just as you say, make up a removable link from deans.

If I mounted a decent sized heatsink on each Electronize, would that increase their amp rating?

Thanks.