planetary gears in a winch

[red-devil]

OK this may be a silly idea but i wonta learn and understand

the factory winch on the vx has 3 planetary gears.

please explain why 3.

i have been googling the planetary gears and sort of understand them. just is there and reason to have 1 or 3.

sorry if its going to cuase some brain strain.

[meatc]

To get the right ratio without going to a massive outer ring.

The Runva and other 2 speed ones diengage a set (or 2) to get the real fast no load speed, not capable of pulling much weight though.

Example of ratios
average for 9000lb is 180:1 - 210:1 (depending on brand)
the above mentioned 2 speed is 48:1 in fast.

Tigerz11 new highspeed 10000lb is 138:1

warn high mount is 130:1 hence it is faster. The reason they get away with the better speed ratio is cause its not all packed full of energy sapping grease.

[Ralfie]

warn high mount is 130:1 hence it is faster. The reason they get away with the better speed ratio is cause its not all packed full of energy sapping grease.

The Warn 8274 is not a planetary gear winch. it is a Spur Gear winch.

[meatc]

warn high mount is 130:1 hence it is faster. The reason they get away with the better speed ratio is cause its not all packed full of energy sapping grease.

The Warn 8274 is not a planetary gear winch. it is a Spur Gear winch.

Yeap sure is, just thrown in for camparison sake. The whole question he asked makes me think he is looking at thing we have been around speeding up a low mount/altering the ratio to get it closer or better than the 8274.

[red-devil]

im not trying to get any more out of the winch.

i just plainly dont under stand it.

does any one know the ratio of the factory landcruiser elecy winch off an 80.

so i take it that all three planetary gears inside the drum are all the same on it unless its a 3 speed.

how does it change the gears or is that something the human has to do.

[red-devil]

ps i have a long way to go to get 2400 posts.

arrr SMOKEY is lookin. now wish man please teach the grass hopper

[Pedro]

im not trying to get any more out of the winch.

i just plainly dont under stand it.

does any one know the ratio of the factory landcruiser elecy winch off an 80.

so i take it that all three planetary gears inside the drum are all the same on it unless its a 3 speed.

how does it change the gears or is that something the human has to do.

by plantary gears do you mean, outer ring, inner gear and then three gears evenly spaced around the center gear, if so the three gears give one ratio, the three plantary gear balance the load on the center and ring, so any forces trying to force the gears out of mesh are cancelled out by each other, if the load is low then it can drive striaght thru, load increases then it starts using the planatery for further reduction, (I think)

Pedro

[red-devil]

all most pedro.

i understand the sun, plants and the outter ring.
to me that is a set of planetary gear.

the vx has 3 of these sets. is this just to spread the load/tourque evenly over the input shaft and drum.

[Pedro]

all most pedro.

i understand the sun, plants and the outter ring.
to me that is a set of planetary gear.

the vx has 3 of these sets. is this just to spread the load/tourque evenly over the input shaft and drum.

if the inner gear extends all the way thru the sets of gears yes, if it only reaches into one set, then it steps into the next from the plantary gears then it would have a 3 step reduction i guess

pedro

[sibainmud]

Each set of gears (outer + 3 inner gears give a reduction.)
There are three sets to achieve the over-all reduction.
1/3rd x 1/3rd x 1/3rd.
Common as in In-line marine anchor winches (my line of work)
Cheers,

[Jungle]

That is my understanding too. You need all three to get the final drive ratio. It is not a selectable thing. It doesn't chose which path to travel.

They are a very compact and effective way of dropping speed and increasing torque.

I had to pull one apart the other day to see why the engage mechanism wasn't working. It was working fine. You just have to push the handle down. Doh!

Cheers
Jungle

[Jungle]

Just testing out my photobucket account.
Woo hoo.

Pic of planetary gear set off a cruiser winch.