Battery

Hi Guys

Having not built a robot since Robot Wars, I'm going to start again with a Feather. Can you post links for batteries? 18v, suggestions + help would be cool :D

what bot did you have on the old wars?

Sabretooth. We made 3 different versions, out in the 1st round every time because it broke itself :lol:

ah, looks like it could have been great, shame about the luck. could it really do 70mph? :lol:

cant go wrong with vapex ni-mh batteries

It was mental 17 hp fully automatic engine, with electric start, yes it did go that fast. On that occasion we had massive radio interference, I had no control of it throughout the whole match. Do you have a link for those battery's

Hi Gabriel,

I've spent the past couple of minutes wondering why your name rings a bell. I realise now that I bought a small linear actuator off you waaaay back in 2005! Okay, randomness aside...

A couple of good online stores for battery packs are:

Component Shop
http://www.component-shop.co.uk/

And Vapextech
http://www.vapextech.co.uk/acatalog/Hig ... eries.html

They're both suppliers of sub-c sized Nickel Metal Hydride packs, from 4.8V packs up to 12V packs (just connect a couple of packs up in series to get your desired 18V+).
These days, lithium-based batteries are quite popular, especially among featherweights, as they are capable of providing much-improved power output for their size and weight. But for getting back into the sport, I'd say Nimhs would be the best option. Have a look around some of the threads though and there will be some info on lithium packs, rules and suppliers.

Have you got a particular design in mind yet?

that sounds mental!

http://www.vapextech.co.uk/

Brilliant ! Well I hope the actuator was put to good use. Sabretooth 4 has a large disc made out of steel in a dome shape. I have a chum who will make a miniature version for my feather. It will have a domed disc, with a interchangeable drill press weapon. Thanks for the links. I will start a build diary once I start on the cardboard mock up chassis

Another question what size MAH should I choose. I will be running 2 x 14.4 motors and a couple of others to drive the disc and animate it

as big as you can afford, i use 4000mah to 4700mah in my feathers, most people use 3300mah or 3700mah