Official Gramps' Memorial Eternal OT Thread

#88,956
#88,956
NorthDallas40 said:
If you tried to spin the shaft at the motor end with you fingers it would spin relatively easy. If you tried to spin the shaft at the owl end it wouldn’t budge. Let’s say the gearing is 100,000:1. 1 in-oz of friction at the motor end becomes 100,000 in-oz of friction at the owl. 1 in-oz of friction at the owl is 0.000001 in-oz of friction at the motor.
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NorthDallas40 said:
Friction is present yes but friction seen at the drive motor is reduced by each stage is passes back from the friction generating stage. For example the friction at the forth gearing stage gets reduced by three multiplicative stages as it’s reflected back to the driver motor. Sorry for the nerd out but this is what I do 😬
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so with gears the efficiency loss isn't due to friction but just the number of stages?

I imagine there are different gear "patterns" that are more or less efficient. also figure vector changes make it take a hit too. you are introducing some sort of "strain/force at different angles". I am sure there is a way to design around that, or even to use it, just curious about how much a lego version of this makes it that much less efficient. even though I am sure its the most manageable way to do it.

I guess legos would be a decent way to prove an idea is valid without going full scale. proof of concept wise.

I am pretty sure its the same guy who has another video on a "useless" geared machine or something. it was a set of gears/joints where if you moved one end, it didn't impact the other, even though they were all tied together.
 
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#88,957
#88,957
LouderVol said:
so with gears the efficiency loss isn't due to friction but just the number of stages?

I imagine there are different gear "patterns" that are more or less efficient. also figure vector changes make it take a hit too. you are introducing some sort of "strain/force at different angles". I am sure there is a way to design around that, or even to use it, just curious about how much a lego version of this makes it that much less efficient. even though I am sure its the most manageable way to do it.

I guess legos would be a decent way to prove an idea is valid without going full scale. proof of concept wise.

I am pretty sure its the same guy who has another video on a "useless" geared machine or something. it was a set of gears/joints where if you moved one end, it didn't impact the other, even though they were all tied together.
Click to expand...
 
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#88,959
#88,959
Ran into a skunk on our morning walk, little f^cker came running out of some bushes just a few feet away. So I grabbed my wife's arm and started going backwards, ended up on my ass half in the road and half in the ditch a couple feet away from the stinker. What I can't figure out is if my wife accidently tripped me or if she pushed me.
 
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#88,960
#88,960
hog88 said:
Ran into a skunk on our morning walk, little f^cker came running out of some bushes just a few feet away. So I grabbed my wife's arm and started going backwards, ended up on my ass half in the road and half in the ditch a couple feet away from the stinker. What I can't figure out is if my wife accidently tripped me or if she pushed me.
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I wouldn't be so certain of her guilt. its not like the skunk spraying you makes the smell any worse than what she already experiences with you.
 
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#88,963
#88,963
LouderVol said:
alright, for some Monday morning pessimism. I think Georgia hits on the cover.

I think Joey is due for 2 pics. his accuracy is not ideal, we have just out athleted the two teams we have played so far. Against Georgia quality DBs our WRs won't be able to play defense as much, and we won't have the ball bounce into Matthews hands for a 50 yard TD.

Our OL has been good so far, and Georgia usually don't generate a ton of sacks, but they still control the line pretty well.

I think we have a chance to make some plays, but I don't think its enough to win it.

defense should hold up pretty good, just worried about getting pushed around with interior depth on the DL.
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I think it's an all out rock fight and the game comes down to 2 or 3 plays.

What makes me nervous? Snapping the damn ball.
 
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#88,964
#88,964
hog88 said:
Ran into a skunk on our morning walk, little f^cker came running out of some bushes just a few feet away. So I grabbed my wife's arm and started going backwards, ended up on my ass half in the road and half in the ditch a couple feet away from the stinker. What I can't figure out is if my wife accidently tripped me or if she pushed me.
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She smartly sacrificed you so she could get away un-sprayed.

Smart woman. Brutal and heartless, but really intelligent.
 
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#88,967
#88,967
LouderVol said:
so with gears the efficiency loss isn't due to friction but just the number of stages?

I imagine there are different gear "patterns" that are more or less efficient. also figure vector changes make it take a hit too. you are introducing some sort of "strain/force at different angles". I am sure there is a way to design around that, or even to use it, just curious about how much a lego version of this makes it that much less efficient. even though I am sure its the most manageable way to do it.

I guess legos would be a decent way to prove an idea is valid without going full scale. proof of concept wise.

I am pretty sure its the same guy who has another video on a "useless" geared machine or something. it was a set of gears/joints where if you moved one end, it didn't impact the other, even though they were all tied together.
Click to expand...
Yeah different gear designs have different efficiencies my 95% straight cut spur gear number is just for that type of gear. They also used worm gears which while I have used I don’t remember their efficiency off the top of my head.

Also friction, specifically coulombic friction, is an efficiency hit but it’s a different type of loss. It’s non linear. The efficiency hit is a multiplicative loss for all motor applied torque and I guess really is another form of friction as it’s the tooth sliding losses. Gear trains get hot due to the efficiency losses. Generally speaking for a given system power out <= power in and that differential is usually considered to manifest as heat.

There are several different types of friction also.
 
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#88,969
#88,969
Orangeslice13 said:
I was standing on the bed railing of one of the F250s today securing a ladder on the rack. I stepped down to the tire like I have 1000 times before but this time I missed. Since my right foot was still on the truck this flipped me upside down and I landed hard on my back in the gravel lot at the shop.


Everything hurts.
Nothing broken.
Hope yall had as good a day as I did.
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This getting older thing can kinda suck sometimes. Not quite the agile ass kickers we used to be.
 
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#88,972
#88,972
JOEY’S ALL VOL !!! said:
This getting older thing can kinda suck sometimes. Not quite the agile ass kickers we used to be.
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I **** you not. At 56 years old if I wasn’t in shape I could have been hurt bad. I went to heated yoga, where Heather try’s to kill you while giving a motivational speech, that seems to have helped. Lots of things still hurt
 
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