Crazy Drive Train Ideas

[Jared Russell]

Originally Posted by iCurtis

This video seems to say it works just as well.

If any team wants to mold some enormous Archimedes screws like those, I'd bet you win some kind of technical award. Making weight would be fun though...

Nobody is saying you can't get a screw drive to move - just that it will be much, much more inefficient than just about anything else on terrain that isn't sand or snow.

[JamesCH95]

With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.

[Tom Ore]

Originally Posted by JamesCH95

With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.

From the video, it looks like a rather high lead thread is required to get the speed ratios correct (fore/aft versus sideways). Maybe a multi start thread could be used to keep the lead high but provide more surface area in contact with the ground.

[gblake]

Originally Posted by JamesCH95

With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.

Maybe someone can have fun making an omni/mechanum auger. Get a big hollow drum and mount (or cut slots to hold) a ribbon of ball bearings, or of rollers, in a barber-pole spiral around the drum's outer surface.

I'm not saying it would be ideally suited for any games other than those containing the fabled FRC water hazards; but it could be fun to make. If you chose the materials carefully, you might be able to create a fun off-road machine that isn't stymied by swampy terrain, and that is also at home on FRC carpets.

Blake

[theprgramerdude]

Originally Posted by JamesCH95

With 130+lbs on the screws good luck not damaging the carpet from driving or getting pushed around.

Pushed on a screw drive? Bahahahahahahahahahahaha

[davidthefat]

Legs with legs


Nuff said

Here is a picture of it:

[Mageofdancingdr]

Train drive, with pneumatics.

hook up pneumatic pistons to crankshafts and as the pistons go in and out they create torque on the axel. most powerful drive system ever.

[DinerKid]

Originally Posted by Mageofdancingdr

Train drive, with pneumatics.

hook up pneumatic pistons to crankshafts and as the pistons go in and out they create torque on the axel. most powerful drive system ever.

It has been done with Vex a few times. The issue is that the system eats air like crazy.

http://www.vexforum.com/showthread.p...eumatic+engine

~DK

[JamesCH95]

Originally Posted by Mageofdancingdr

Train drive, with pneumatics.

hook up pneumatic pistons to crankshafts and as the pistons go in and out they create torque on the axel. most powerful drive system ever.

The compressor is just about the least powerful motor in the KOP, so that drivetrain will be about the least powerful. It could have high pushing force though.

[Trent B]

Originally Posted by JamesCH95

The compressor is just about the least powerful motor in the KOP, so that drivetrain will be about the least powerful. It could have high pushing force though.

Gotta love semantics.

It would probably have the most pushing force, most powerful over the time period where there is enough air in tanks. Over the whole match probably the weakest.

[Jared Russell]

FRC rules have traditionally allowed energy to come from 4 sources:

-Battery
-Stored air
-Stored gravitational potential energy
-Deformation of robot parts

The fourth one could make for an interesting drive system (a "wind up toy"). Albeit one that would take a lot of engineering to make safe enough - yet powerful enough - to be useful.

[JamesCH95]

Originally Posted by Trent B

Gotta love semantics.

It would probably have the most pushing force, most powerful over the time period where there is enough air in tanks. Over the whole match probably the weakest.

Hehe, I suppose it is a little semantic, but there is a lot to be said for using precise and correct language, especially in the field of engineering.

[Trent B]

Originally Posted by JamesCH95

Hehe, I suppose it is a little semantic, but there is a lot to be said for using precise and correct language, especially in the field of engineering.

I know the correct usage of power, the problem is so many people don't so for the average person it seems to have a tendency to have qualities of semantics. Gotta love common english language and its distortion of terms to mean other things.

[JamesCH95]

Originally Posted by Trent B

I know the correct usage of power, the problem is so many people don't so for the average person it seems to have a tendency to have qualities of semantics. Gotta love common english language and its distortion of terms to mean other things.

If you know how to use it properly then do not perpetuate its misuse! That is how common English screws things up.

[AdamHeard]

Originally Posted by Trent B

Gotta love semantics.

It would probably have the most pushing force, most powerful over the time period where there is enough air in tanks. Over the whole match probably the weakest.

I'd argue pushing force is completely independent and unrelated to the power source.