Using gold motors

[glen]

Using gold motors

aha, while your all dreaming of thingaps in featherweights, us australian people all ready have one!!! its called minotuar...

http://www.abbl.org/robots/index.php?mode=view&id=69&sid=d088a4caba5475157289 0ffbc9bbfd4ehttp://www.abbl.org/robots/index.php...a54751572890ff bc9bbfd4e

[knightrous]

Using gold motors

Yeah, Minotaur will only have two though, but it hsad the awesome CNC machined 23:1 reduction boxes for them too. Maybe when we get some decent treads on T2M, we might step up the voltage to 24v and challenge him to a pushing match

[mute]

Using gold motors

1.2KW and vulkallon tyres wont make it stick to the floor. Micro Mute 2 uses 2x 480W motors, 4WD and 4 vulkallon tyres and it wheel spins everywhere, even with another feather attached to the front.

Motors are bosch 12V 120W (approx 3 dia) overclocked to 24V pulling around 10,000 rpm, 4.5:1 reduction to 5 wheels which ends up at around 25-30mph. The motors get warm, where as the batteries get HOT.... very hot....

[Guest]

Using gold motors

Daniel, what about updating your webpage?

[geoff]

Using gold motors

Daniel,
I know what you mean about M.M. Never has there been a robot more in need of a bigger arena!!
Extreamly impressive though!

[geeza]

Using gold motors

For the 24V golds I agree with Geoff, I run about a 10:1 reduction with 4WD and they do get warm but not hot after a 5min battle.

[s8nsmum]

Using gold motors

P.I.M.P.anought uses 24V golds at 25.2V with an 8.8:1 reduction on 4X50mm wide 120mm diameter wheels. The motors still get nice and hot and so do the batteries. It has quite a lot of shove but not too much speed.

Joe Townsend

[robotwars]

Using gold motors

and it works quite well on 3 wheels aswell

jonno

[geoff]

Using gold motors

Daniel, Just a thought on M.M.s drive set up, you use 2 4QD boards dont you? Just done the maths on your current and motor efficiency ratings and 480W+/- @ 24V is 20A+/-. To keep your battries a little happier, try winding the curent limit down to say 22-25A on each board. you shouldnt see any downturn in preformance but your battries will love you forever!!

[stu]

Using gold motors

LOL!
Batteries can atually love us?

Mr Stu

[geoff]

Using gold motors

Stu, that was a figure of speech!..Mind you, what you do with your batteries are your business!!

[mute]

Using gold motors

Geoff, we use 2x 4QD NCC-70s de-rated to 50A. The batteries do get hot at this setting but they will hold out for 5 minutes (just) without too many problems.

I thought we were being nice to our batteries these days cos back in the good old days we used to run the original Micro Mute at a full 70 amps per board with the same motors. Now that was something to see

All I can say is dont try this with NiMh packs or small SLAs (or anything with a low current output) because they will go up in smoke.... orange smoke as I remember....

[stu]

Using gold motors

Orange Smoke - arrr the good old days yes.
I wanna see blue smoke

Geoff - now now, dont get ideas.
(Said keep it quite, you lied :sad

Mr Stu

[team_ireland]

Using gold motors

Slightly off the point but still with gold motors in mind. How is the best way to keep the distance between the two gears?

Regards
Ian Mc Donald

[fwsorg]

Using gold motors

Sheet of 10mm ali. Bore some accurate holes for the bearings and motor mount and hey presto.