Getting started, what do I need?

[stu]

Getting started, what do I need?

LOL! oh dear.

http://www.overlander.co.ukhttp://www.overlander.co.uk seem to be able to tell you nearly everything you need to know about battery packs. go to electric flying packs section and search the pages. Just find a pack which uses the same kind of cells that you have, and it will tell you.

But for instance, the GP3300mAh pack on overlander says 35amps + contin.
It is atually 45amps contin, but thats when the pack has been made up decent. Eg with DECENT battery bars and soldered wire - not spot soldered/welded - thats poo and limits the amount of current coming out of the packs.

Mr Stu

[gizz]

Getting started, what do I need?

Ok i have been wondering about drillmotors too, have found some cheap 18V drillmotors that are quite appealing (maybe spellt wrong, im swedish ) but then i wonder, do i have to buy a speedcontroller? If im not wrong then there is a speedcontroller on a handdrill right from the start? And one more thing, should i go for like a ~3000mAh NiCd battery pack to a R/C transmitter or something?

[Guest]

Getting started, what do I need?

Just so you know, a 3Ah Ni-Cd battery is larger than most other battery packs for radio controlled cars. So they weigh more and are more expensive.

Concerning the speed controllers in the drills:
http://www.fightingrobots.co.uk/discus/messages/25/1201.htmlhttp://www.fightingrobots.co.uk/disc...s/25/1201.html

[stu]

Getting started, what do I need?

Yes its to do with the sizes etc.
A 3Ah Ni-Cd Cell HAS to be a C size cell to get that much capacity into a NiCad cell.

Ni-Mh can be a Sub C cell size and still get 3Ah into it, but less discahrge current thou.

Again you have to mix and match the NiCd and Ni-Mh cells to your robots use. Some people can get away with 2200mAh Ni-Mh packs, some people can only JUST about cope with a 3Ah Nicd pack. Depends on many things.

Mr Stu

[blazerbotics]

Getting started, what do I need?

alpha runs a 3Ah 24v Botpack, and they still get very hot after use and i only have enough power for one fight (although can do two if im carefull). Where as G3 was running a pair of very old 7.2v 1.5ah Nicads (race packs) and he still had enough for two fights. It just shows you the difference between robots.

[stu]

Getting started, what do I need?

Yep there you go. Really is on what your robot is meant to do.

Mr Stu

[gizz]

Getting started, what do I need?

OK i see. Im thinking of a ordinary pucher as it will be my first real robot (except for an ant) so im just glad to get it running ok NiMh sounds like a better choice then

[blazerbotics]

Getting started, what do I need?

pucher? u mean pusher? if so then use NiCads, NiMh wont supply the power for a decent pusher.

[ewan]

Getting started, what do I need?

Alan... I think my robot proves you wrong
As long as you get decent cells (GP 3300mah being- I think- the best) then you can make pushers quite easily with ni-mh. But thats only the case if you use the right motors.

[blazerbotics]

Getting started, what do I need?

but in all fairness MM isnt as powerfull as alpha, and alpha has had a lot more fights then MM.

[ewan]

Getting started, what do I need?

I agree on the second point... But has the first point been proven? On paper I have much more torque...

[blazerbotics]

Getting started, what do I need?

well the only obvious way to find out is a fight. Specifications dont prove anything, in theory alpha should have the same power as everyone else on golds, but we all know that isnt the case. Alpha is pushed to the limits in every fight (hence why ive burnt out two pairs of motors). Pushing Power isnt just about motor size, alot of factors effective the performance, all of which were included in Alphas design. Like I said the proof is in the fighting!

[ewan]

Getting started, what do I need?

Ill take that statement to RC wars

[blazerbotics]

Getting started, what do I need?

im going bristol :P

[Guest]

Getting started, what do I need?

One reason for Alphas performance may be the batteries. Very few people using those motors use them in combination with high capacity batteries.

Speed controllers also have a major effect.