hey george + tim ill continue that talk here..

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I cant work out the calc it keeps giving me 1.2 amps max lol anyway can you work out 12v drill motors one per side at 18v on a 3600 pack with 5 inch wheels same width as the blue wheels.

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THanks for that, interesting
half stalled is about half max power and seems like will need to run batteries in parralel but thats cool.

Whats your opinion on the data Glen, any advice on the ideal gear ratio for the setup mentioned or does it sound like it shoud work ok, hard question I know.

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Ok sweet thanks.
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Tim Team Reaper.

THanks again Glen, have another one for u, this will be the last, I promise.

Tried to do it myself but didnt see scooter motors.

THought to aplly the calculations to the the fights where the hot glue melted out of the packs and see what the data is saying the batteries are doing.

2 x 250 watt scooter motors running 18 cells, gear ratio 3.33:1, 6 inch wheels at 20kg.
BTW what do u generally use as the CF setting
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Bots that do not destroy you, only make you stronger.

heh i like doing these, interesting results all the time

for CF i leave it at 0.9, that figures as good traction as you can get, i believe 1 is the absolute maximum.

really cant say about the scooter motors but if i figure EV warriors which are about the same i guess -

Torque (per motor) to spin wheels 285.40 oz-in
Amps (per motor) to spin wheels 43.243 Amps
Theoretical Top Speed 24.082 MPH
Total Peak Amps 86.486 Amps
Amp Hours Required - 3 Min 3.0270 AH
Amp Hours Required - 5 Min 5.0450 AH

really need the stall current and torque of the motor to know for sure.
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www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

A really good place to find motor specs all in one place is either the Robot Market Place, (which takes a bit of browsing).

Or the Enigma Industries Link Page
http://www.enigmaindustries.com/links.htm
where you can click on a lot of the link and it will bring up detailed specifications for many of the motors.

Have you had a look at the Electronic Drive Train Simulator ? Its quite interesting, although requires to have a few paramters like ineteria figures and a few things that might stump some builders.

Nice that you actually get to "drive" your combination and watch the voltage and current in real time though.
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Great minds discuss ideas. Average minds discuss events. Small minds discuss people

i love that program,

scary thing is the robots actually drive fairly realistically too.

one thing i wish they had so badly was to be able to import a rhino render or some such and use that as the model,
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www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz

quote:

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Originally posted by Glen:
really cant say about the scooter motors but if i figure EV warriors which are about the same i guess -

Amp Hours Required - 3 Min 3.0270 AH
Amp Hours Required - 5 Min 5.0450 AH

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make it too easy for people to build "Virtual" bots and they might not want to get their hands dirty doing the hard work of turning them into real steel though.

I agree though, I often thought about something like Robot Arena 2 with its physics modelling and skin-able bots combined with some hardcore simulation of actual power consumption and torque etc like EDT sim. I think they're great tools to visualise and imagine ideas and test them a bit first.

But still, whats works on the computer screen can often be let down by something as simple as a nut or bolt coming loose that just doesnt happen in the virtual world of simulations where everything always works the way its supposed to.

Thats what makes building these things for real so much fun. Watching a physical combination of bolts, metal, and sweat and tears do your bidding in real life is far more satisfying than making virtual pixels dance about on a computer screen..

Kind of like the difference between looking at screen pixels that are coming from some adult web site on the net versus.. <ahem> well you know what I mean..
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Great minds discuss ideas. Average minds discuss events. Small minds discuss people