ENVY

[craig_anto]

ENVY

good old HPC :P

[swanaldo]

ENVY

i have asked to hollow out to half the width of the gear and 15mm from the teeth. i dont think they will bend at that. well i hope not.

[geeza]

ENVY

Looking at this the new Envy is going to be mega fast. Boschs on 36V 5.7:1, wow. Have you actually calculated the speed of it

[swanaldo]

ENVY

sorry ed but i have changed to mag c40 motors and i will run them on 24v for realibility. so 4000 ish rpm at 5.7/1 wil give on paper 17.7mph which makes it 1mph slower than at uk champs.

[woody]

ENVY

8 inch diameter wheels ...

Torque (per motor) to spin wheels 1111.5 oz-in
Amps (per motor) to spin wheels 138.08 Amps
Theoretical Top Speed 16.825 MPH
Total Peak Amps 276.16 Amps
Amp Hours Required - 3 Min 9.6659 AH
Amp Hours Required - 5 Min 16.109 AH

[robotwars]

ENVY

no wonder his hawkers were going flat after each fight down in portsmouth !!! :sad:

[swanaldo]

ENVY

there may be trouble aheeeeeeeaaaaaaddddd. but while theres sunshine and music and laughter and romance......lets face the music and dance.


will be using 4 bot packs at notts and jason will be using 4 13ah hawkers so which ever turns out the better we will see. and yes the title of the oracle is between woody and john reid.

[gravity]

ENVY

jeeez u guys use a lot of power...
Gravity 3 could easily fight 2 full battles with only 3 9Ah 12V pbq batteries... 20 to 1 on 10 go cart wheels.
Was this due to excellent regen braking in the speedcontrollers ?

[woody]

ENVY

John has a far better understanding of the math involved in Robot building than Ill ever have!

[woody]

ENVY

Heres your specs W.J.

Same C40 motors ... @ 24v

Torque (per motor) to spin wheels 396 oz-in
Amps (per motor) to spin wheels 49.192 Amps
Theoretical Top Speed 5.9940 MPH
Total Peak Amps 98.385 Amps
Amp Hours Required - 3 Min 3.4434 AH
Amp Hours Required - 5 Min 5.7391 AH

@ 36v

Torque (per motor) to spin wheels 396 oz-in
Amps (per motor) to spin wheels 49.192 Amps
Theoretical Top Speed 8.9910 MPH
Total Peak Amps 98.385 Amps
Amp Hours Required - 3 Min 3.4434 AH
Amp Hours Required - 5 Min 5.7391 AH



(Message edited by woody on October 25, 2007)

[swanaldo]

ENVY

gravity didnt speed for the weapon to work at its best. i need speed for envy to work at its best. notts will tell the tale.

[gravity]

ENVY

Woody, C40 motor = Bosch 750 24V ?

And indeed Shane, just a little tip of the flipper, about 1 inch was enough for flipping action...

[gravity]

ENVY

where can I find some more info on Envy by the way

[swanaldo]

ENVY

i dont have a web site but you can mail me with lots of questions and i will be more than willing to answer them.

[woody]

ENVY

Close W.J.
Higher stall Amperage with the C40.

C40
Torque Constant oz-in/amp 8.06
Stall Amperage: 480
Voltage Constant: RPM/volt 167.9
Operating Voltage: 24v

Bosch 750
Torque Constant oz-in/amp 8.7
Stall Amperage:270
Voltage Constant: RPM/volt 167
Operating Voltage: volts 24v

Go figure .


http://www.architeuthis-dux.org/torquecalc.asphttp://www.architeuthis-dux.org/torquecalc.asp

You didnt think I came up with the figures myself!