Saberwing's big idea thread.

[Saberwing40k]

That's right, folks. I've got a thread for all of my potentially good technic ideas.

Let's start with something i made a long time ago: a large multiplexor.

Pretty spiffy, huh? it was meant to have four motors, 1 to control it, and 3 actually driving. as can be seen from the picture, it uses 1 xl, and 2 medium motors.

as can be seen in this picture, all of the motors are geared down. (i yanked 1 of the mediums for another project, can't remember what.) all three of those motors transition on those 2 16l axles, and are moved by the two linear actuators seen on the sides. unfortunately, i had to take it apart before i could finish the shifting mechanism

as can be seen, it is big.

the guts of the mechanism.

that's all I've got for now, but watch this space, because there will be more.

[Meatman]

It's nice to see that you are not too over confident in your work.

[timslegos]

Looks good but i have no idea how it works.

tim

[Burf2000]

What does it do?

[Saberwing40k]

What does it do?

well, it splits the output of one motor into 3 outputs, one of which can be operated at a time. by moving the motor assembly back and forth, each motor drives a different set of outputs. it works somewhat along the lines of the mechanism in 8043, only each motor has 3 outputs, not two.

so: position one: outputs 1,2,3. Position 2: outputs 4,5,6. position 3: outputs 7,8,9.

in order to change position, the motors are all connected to a base that slides on 2 16l axles, which engages each motor with a specific output.

In short, it allows one motor (or in this case 3.) to perform many functions.

[Saberwing40k]

Update time! i decided to post a couple of little things this time.

first up is a new omniwheel, which uses a track sprocket as a base. i'm not quite sure how well it would work, as it takes quite a few pieces to make.

another view, showing the alternating rollers.

and now for something completely different: a trial truck with a linear gearbox. i made this thing for the Lego Technic challenge a long time ago.

as can be seen, it is based sort of on one of zblj's designs, so it might have been pretty good, had i been able to make the 3 speed gearbox stronger, and done something about the battery box. the transmission is controlled by a medium motor,witch is hidden under the battery box.

and finally, for now, i've got a prototype for a ball collector i made for my FIRST Robotics team. it use 4 medium motors and 4 treads to pick up balls from any direction, at least if it was complete, which it is not.

Edited January 24, 2012 by Saberwing40k

[Saberwing40k]

I'm not quite dead yet! this thread is still ongoing.

anyway, i've got some wonderful new ideas. let's start with an idea: auto reciprocating linear actuators. the plan was to make a linear actuator which would extend, stop, and then retract, all without having to swap the direction of the drive motor. however, none of them work.

i apologize for the weird colors, that's the last time i try working with them in Preview.)

in this version, the differential is used to swap directions, once the actuator fully extends. unfortunately, due to how the actuator is set up, it jams, and rather than switch directions, the switch mechanism just swaps back and forth.

this one works in much the same way, but is even less reliable.

anyway, enough of this nonsense.

let's try something better, namely, a large hubless gear:

it's made out of old track links, and was to be part of a 4 functions through a turntable mechanism, which would not work because i don't have enough parts to make another.

also, it likes jumping gears, and does not work at standard distances.

in addition, i have these three things, which are really self descriptive.

A cannon

it was to be a part of my TSTTS entry, but i had no time.

a front wheel drive mechanism, meant for a motorized version of 9395, being scavenged for parts.

a leaf spring. the axel would attach to the red connector.

please credit if you use any of this. thanks!

Edited May 14, 2012 by Saberwing40k

[Alasdair Ryan]

See that reciprocating liner actuator,if you use a clutch gear to drive it out words,Place a gear on top of the outer part of the clutch gear and then the the LA.

Will not work.

Edited May 14, 2012 by Alasdair Ryan

[timslegos]

Some interesting ideas here. Any plans to implicate them?

tim

[danny316p]

Is the "hubless gear" useful as a planetary gear?

[Saberwing40k]

Before I answer, we have some guidelines as to what to do about bumping old threads. Well, the hubless gear, if you fixed it in place, might make a good planetary gear, but Lego makes parts that work better for that, and are smaller.

[__________________________]

Is the "hubless gear" useful as a planetary gear?

Before I answer, we have some guidelines as to what to do about bumping old threads. Well, the hubless gear, if you fixed it in place, might make a good planetary gear, but Lego makes parts that work better for that, and are smaller.

For the longest time I thought this was a stupid rule. But think about it, whenever you bump old thread, lots of people will look at it, only to see a post which will be basically useless.