Translational drift/melty-brain/cyclone drive/etc. thread!

[Metal Demons]

Carried on from the FW database thread as it was getting seriously off topic: translational drift spinner stuff goes here!

I'd be inclined to say that by reducing the duty cycle you allow yourself to overvolt the motor even more, thereby getting the same average power output ;-)

More batteries = more weight I'm currently using this method to get more power and speed, I stepped up from 19.8v to 39.6v and I'm starting to limit of the motor (12v motor @ near 40v). If I could run that motor at full power all the time, I could get away with probably 26.4v instead to get the same power.

Hmm, maybe we need a Melty Brain thread instead of OT'ing this thread:P

Yep, but hinged wheels + whatever mechanism is required to position them = more weight, too and the Whyachi-style idea isn't invertible. Plus, more moving parts to go wrong on impact...

I foresee the only way to resolve this argument is to each build a melty-brain spinner and fight - I have a whole other robot to do first though! I'll be building a little 2 wheeled test platform soon, though, in order to work on software...

[RogueTwoRobots]

And once you've built your first robot and then your translational drift bot, you'll only need to overcome the small obstacle of getting to Australia to take on Aaron's robot

[Metal Demons]

And once you've built your first robot and then your translational drift bot, you'll only need to overcome the small obstacle of getting to Australia to take on Aaron's robot

My father lives in Oz, so I'm sure that could be arranged

[RogueTwoRobots]

Touch

[geoff]

Jamie, who needs to take it all the way to Oz to have some fun, I'm Just looking forward to Biting Torque V Drum Roll (Payback for Pain In The Asp! :wink: )

[RogueTwoRobots]

I welcome the challenge
Will Biting Torque be at the Robo Challenge Tag Champs? I'm proud of my machine that it was able to inflict the damage to Pain in the Asp that it did (despite still losing ) but I'd like to see how it fares against one of your spinning creations, as I hold your machines in high regard and would consider it a true test of ability to be able to survive, and hopefully win, against it.

[geoff]

Thank you for your kind comments regarding my machines Jamie.
Biting Torque is still a drawing board concept at the moment, there are a few 'very interesting' engineering and electrical problems to be solved with a translational drift type of drive, mostly to do with how you actually steer the thing!
I have even been thinking what advantage (If any) there could be in using 3 omni-drive wheels instead if 3 normal traction wheels. (Maybe some one would like offer some thoughts on that idea) In addition it has, externaly at least, to be a faithful replica of Y-Pout.
So this will not be a quick project, but could be worth waiting for if I ever get it to work properly!

[RogueTwoRobots]

Ahh that's ok, means by the time that Biting Torque is completed I'll have ironed out all the kinks in Drumroll Mk.II

Regarding omni-wheels; the only robot I've seen footage of who uses them is 'Sidewinder' from Australia. It had omni-wheels (or transwheels, same thing pretty much) that I believe were from Kornylak (link) and even though the rollers were some sort of rubber material, I noticed that the robot really lacked any form of pushing power. Applying that to a Y-Pout design, I'd imagine that when the robot and its blades come in to contact with another robot, even though they'll weigh roughly the same, yours could well go flying off in the opposite direction more easily than the opponent due to the omni-wheels, resulting in a lot of the stored energy being lost in the impact. It may, of course, work differently in practice

[Metal Demons]

Thank you for your kind comments regarding my machines Jamie.
Biting Torque is still a drawing board concept at the moment, there are a few 'very interesting' engineering and electrical problems to be solved with a translational drift type of drive, mostly to do with how you actually steer the thing!
I have even been thinking what advantage (If any) there could be in using 3 omni-drive wheels instead if 3 normal traction wheels. (Maybe some one would like offer some thoughts on that idea) In addition it has, externaly at least, to be a faithful replica of Y-Pout.
So this will not be a quick project, but could be worth waiting for if I ever get it to work properly!

Feel like collaborating on this? I have the software and electronic hardware side of a melty-brain robot pretty much sorted - however, I don't have the resources at the moment to build and run two robots simultaneously...yet.

[knightrous]

Yep, but hinged wheels + whatever mechanism is required to position them = more weight, too and the Whyachi-style idea isn't invertible. Plus, more moving parts to go wrong on impact...

Ah yes, but once a mechanical design is perfected, it's reliable. Car motors are a good example, lots of mechanical complexity but they are reliable.

The omni wheels I would avoid because they have very little traction, are quite frail and offer no advantage for this kinda of design.

Yep, everyone come to Oz for an melty brain show down, our dollar is crap against the pound so you'll be able to visit for a fiver or three