Hailfire Planetary Mechanism

[megaboy021]

Where can I get the big Wheel???

[mrob143]

@megaboy021 Look on "peeron dot com" or google "technic gear hailfire droid". But warning, it's very rare and expensive -- like 25 or 30 dollars )-:

[Unlorrd]

you suck

[zillyberk]

Nice gear set. If you are filming this inside your car you must have left your door open with the key in the ignition. : p

[RubyRhod]

that's no planetarymechanism... but nice try

[babblake1]

Most car auto trans have one set of planetary gears.

[Uchihaman1234]

Star Wars reference ftw

[superotherguy1]

lol i think uv been playing with gears too much XD

[LtDanw]

what's the point of it?

[mrob143]

@LtDanw I basically just like anything with lots of gears. Thats about it really (-:

[legomastr1]

@LtDanw if you think about it you could ask the same question about lego in general

[quadcatfly]

does anyone know if planetary gear has more/less or about the same efficiency as spur gear (two meshing gears) of the same ratio?

[mrob143]

I think it has a bit more efficiency, because the axles can't move away from each other (they're "trapped" inside the outer ring). Also, they can transfer more power (or torque, not sure which is which). I have found both of these things to be true with LEGO gears.

[nonskids]

efficiency is actually a bit less because of friction , but planetary gears have a huge advantage over regular gear sets in that gear ratios can be changed without stopping or physically changing gears, by alternately holding and driving different elements, (sun, planet or annulus gear) - combining several planetary gears sets together allows almost any gear ratio to be achieved including reverse, and it can be done without stopping the driving gear ,, that's how a automatic transmission works

[mrob143]

Yeah, that's how the gear shift on my handheld power dril works, too. I dropped one once and it shattered, tons of ball bearings and 12 exquisitely machined sun and planet gears, plus two rings. It's pretty cool.

[theempireuk]

How old is this guy?

He sounds too old to still be playing with Lego to me.

[mrob143]

Either I am way too old (44 years), or else no-one is ever too old. I prefer the latter (-:. Better yet, my husband really digs it.

[TheOneAndOnlyFink]

I used to build just gear sets with my lego mindstorms just to watch the gears rotating. I've always loved gears for some reason. I've been a lego head for maybe 17 years. Yeah, you're never too old for lego sets.

[itbeshowinlikeamotha]

Wait, your husband?

[ljaKU4yoU1997]

@itbeshowinlikeamotha When the hell did he say that !? xD

[Cokoholicar]

dude, watch the movie 'Napoleon Dynamite', you sound exactly like the main actor.

[geoff390]

hahaha.

[warriorider303]

hahha

[theyounge]

Where is the "turntable" from?

Is it an actual Lego piece?

[mrob143]

It is from a 1999 Star Wars set called "Hailfire Droid", go to "peeron-dot-com" and search for "4481-1"

[mrob143]

It came with a 1999 "throwbot/slizer" set, go to "peeron-dot-com" and search for "8500-1"

[Alek9997]

Where did you get the red 48 tooth gear?