Tweet
New year new paintjob 
;
; 
-
-
Thats awesome!!!!
A serious contender this yearComment
-
Don't suppose there's any chance its not as vicious as it looks?Comment
-
Are you open to bribes and match fixing lol.Comment
-
Lol
Btw, what LED is that on the back, looks very brightComment
-
3mm super bright from maplins with an inline resistor to step voltage down to 5VComment
-
I am guessing that is from 6S down to 5V? Much easier at lower voltages. Doing it a 50.4V is harder... I have had to get a 5W rated resistor on order.Comment
-
720 only runs 5 cellComment
-
Wow, punchy for 5S :-) Then again it its using an inrunner not an outrunner. How much did the drum weigh in the end?Comment
-
In runner vs out runner makes no real difference in power at any voltage range. Just different rpm/torque characteristicsComment
-
What does the brushless typically pull nowdays, Dave? You were peaking over 300a when you first tested this, I think? That's ~6kw on 5s, which sorta blows my mind.Comment
-
300A on spool up on that low a voltage is likely getting super low efficiency. I'd expect the actual output at that range to be something like 3.5kw at most and the rest being burnt off in heat. As its hitting 300A for such a short time there's no real heat build up in the motor.Comment
-
Yeah I figured it might be pulling that but actually turning a small amount into kinetic energy. Even at 50% efficiency that's more than my cheapo motor is rated for at peak total pull - will be interesting to see how the Hobbyking-level motors (and speedos) run this year.
Wasn't long ago a single s900 made for a respectable weapon motor, so I'm not worried about grunt, just reliability. Think they've improved a lot in the past 18 months.Comment
-
What grant said... Most of it gets turned into heat, but as I generally only spinup 0-100% once or twice in a fight you can't really tell... After a 3min fight the brushless was still not much more than room temperature which amazed me.Comment
-
Just seen this; http://www.fightingrobots.co.uk/cont...rweight-awards
Best driver - thanks to those who voted!Comment
Comment