How differentials work

IlChengis · 05-17-2010, 09:00 AM

Here's how our crappy 335i differentials work.

Excellent video, no? I'll pass the torch... let's see who can find a video just as well made that explain LSD.

Enjoy,

-Walter

PS=Notice at the end how they didn't say "do not attempt this - performed by professionals on a close circuit". None of this bull needed back then.

jpsimon · 05-17-2010, 09:19 AM

wow that is the most simple/perfect explanation ever, thanks for that link!

gian335 · 05-17-2010, 09:25 AM

Nice, kickin it old school... Very simple explanation

kjrulz · 05-17-2010, 09:41 AM

awesome

RON1X · 05-17-2010, 10:40 AM

very informative, thanks! I guess its always nice to go back to the roots

Mr. 5 · 05-17-2010, 11:13 AM

I can't see the vid here at work but i think it's been posted before if I'm remembering it correctly. It's a good vid.
Is it the one with pencils or tinker toys?
I took a quick clip of how the Wavetrac LSD worked in my car with transfering the power to the ground.
http://www.e90post.com/forums/showth...5069&highlight

Maestro · 05-17-2010, 11:46 AM

Back during a simpler time, they had time to explain how things really worked.

There is a good show on the Science Channel that does a pretty good job of explaining things like this.

Maestro · 05-17-2010, 11:55 AM

Here is one on torch converts, not the 1930's vintage but this guys does an okay job, but he commentary is a bit distracting

scottp999 · 05-17-2010, 12:01 PM

Great video. It just shows how pathetic it is that BMW does not offer the option of an LSD in non-M cars.

SoQuick · 05-17-2010, 12:16 PM

IT IS CALLED!!!!! THE DIFFERENTIAL!!

cool find +1

KyLu II · 05-17-2010, 01:42 PM

now i know!!!

yandy · 05-17-2010, 02:00 PM

That was awesome!

Jeff@TopGearSolutions · 05-17-2010, 02:05 PM

LOL that was actually pretty helpful

thwgw24 · 05-17-2010, 02:32 PM

great video!! I now understand what I was paying for.

IlChengis · 05-17-2010, 08:52 PM

Hehe, glad you guys enjoyed it as much as I did. I feel like explaining how open diffs work to the whole world now.

Mr.5, this video did not involve pencils or similar props. Did you get a chance to see it from home? If they're different videos, could you share the one you were referring to if you find it? Your video demo was pretty cool. Did you actually drive forward with a normal car jack on one side, or was that a special jack made to roll? Balls of steel either way.

-Walter

BrianMN · 05-18-2010, 03:03 PM

This makes me beg the question: Why can't we weld the spiders together and make it Posi?

It might seem like a joke to do that to a BMW...but why not?

Welding diffs is nothing new, and something I actually have experience with...just hesitant to do to my precious 335.
I've welded diffs in 3 trucks, 4 muscle cars, 2 golf carts and it works perfectly. A differential is a differential is a differential.

Granted, the inside tire spins/chirps when cornering, but why not do this?

I'd much rather have Posi for free than get a LSD for $2500.

marcel b · 05-18-2010, 03:18 PM

Quote:

Originally Posted by scottp999

Great video. It just shows how pathetic it is that BMW does not offer the option of an LSD in non-M cars.

this video shows what we have in a 335i, an (open) differential. A Limited Slip Differential is a next step in evolution

IlChengis · 05-18-2010, 04:34 PM

Quote:

Originally Posted by BrianMN

This makes me beg the question: Why can't we weld the spiders together and make it Posi?

It might seem like a joke to do that to a BMW...but why not?

Welding diffs is nothing new, and something I actually have experience with...just hesitant to do to my precious 335.
I've welded diffs in 3 trucks, 4 muscle cars, 2 golf carts and it works perfectly. A differential is a differential is a differential.

Granted, the inside tire spins/chirps when cornering, but why not do this?

I'd much rather have Posi for free than get a LSD for $2500.

I hear your point. Very common in the DSM world... makes the drivetrain last longer on 6k rpm AWD launches. Don't ask how I know.

-Walter

Mr. 5 · 05-18-2010, 08:59 PM

Quote:

Originally Posted by Treppiede

Hehe, glad you guys enjoyed it as much as I did. I feel like explaining how open diffs work to the whole world now.

Mr.5, this video did not involve pencils or similar props. Did you get a chance to see it from home? If they're different videos, could you share the one you were referring to if you find it? Your video demo was pretty cool. Did you actually drive forward with a normal car jack on one side, or was that a special jack made to roll? Balls of steel either way.

-Walter

It is the vid that I was thinking of. I couldn't exactly remember what they used. they used sticks and tinker toys to fit in the sticks for the dif.
I did use a jack stand.

I made sure that the wheels were pointed in the right direction and it rolled fine.

This is a pretty cool video that shows how the wavetrac works. It kind of takes a while to load.

[u2b]WluaaGy0HwA&feature=related[/u2b]

fruition3000 · 05-18-2010, 09:10 PM

Good post thanks

euromoda84 · 05-19-2010, 02:10 PM

wow thats a great lil video! good find!

BrianMN · 05-19-2010, 09:00 PM

Any other input about welding the spiders?

Quote:

Originally Posted by BrianMN

This makes me beg the question: Why can't we weld the spiders together and make it Posi?

It might seem like a joke to do that to a BMW...but why not?

Welding diffs is nothing new, and something I actually have experience with...just hesitant to do to my precious 335.
I've welded diffs in 3 trucks, 4 muscle cars, 2 golf carts and it works perfectly. A differential is a differential is a differential.

Granted, the inside tire spins/chirps when cornering, but why not do this?

I'd much rather have Posi for free than get a LSD for $2500.

05-17-2010, 09:00 AM	#1
IlChengis once Treppiede 63 Rep 915 Posts Drives: 2012 E92 M3 Join Date: Aug 2008 Location: Miami and Atlanta iTrader: (4)	How differentials work - must watch Here's how our crappy 335i differentials work. Excellent video, no? I'll pass the torch... let's see who can find a video just as well made that explain LSD. Enjoy, -Walter PS=Notice at the end how they didn't say "do not attempt this - performed by professionals on a close circuit". None of this bull needed back then. __________________ 2013 E92 M3 \| 6MT \| AlpWhite \| SilverNovillo \| CarbonTrim \| ZCP \| PremiumPkg \| Alarm 2009 E92 335i \| 6MT \| AlpWhite \| CoralRed \| AlumTrim \| M-Sport \| Nav \| Logic7 \| Alarm (sold to a friend - still in the family)
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05-17-2010, 09:19 AM	#2
jpsimon Team Zissou 3084 Rep 10,198 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	wow that is the most simple/perfect explanation ever, thanks for that link!
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05-17-2010, 09:25 AM	#3
gian335 Major 37 Rep 1,031 Posts Drives: e92 335 Join Date: Apr 2008 Location: uknown iTrader: (1)	Nice, kickin it old school... Very simple explanation
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05-17-2010, 09:41 AM	#4
kjrulz Mastermind 71 Rep 1,360 Posts Drives: girls krazy Join Date: Jan 2009 Location: your mother iTrader: (5)	awesome
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05-17-2010, 10:40 AM	#5
RON1X Colonel 75 Rep 2,491 Posts Drives: 991 C2S Guards Red Join Date: Aug 2009 Location: Nashville, TN iTrader: (8) Garage List 2008 E92 M3 [9.00]	very informative, thanks! I guess its always nice to go back to the roots __________________ 991.1 C2S PDK, Guards Red \| PDCC \| Sport Chrono + \| Clear Tail Lights \| Alcantara Steering Wheel \| HRE FF01 \| TechArt Springs \| Sport Exhaust Previous: Porsche 997 Turbo 6MT, Atlas Gray \| Cobb Stage 2 \| HRE FF01 \| Europipe Stg. 2 Exhaust \| GMG LMS Rollbar \| GT2 Exhaust Tips \| Pagid RS-29 \| Rennline Pedals \| SSK 997.2 Track Car, heavily modded & E92 M3 DCT, still miss her daily & E92 335i heavily modded
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05-17-2010, 11:13 AM	#6
Mr. 5 Modder Raider 760 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	I can't see the vid here at work but i think it's been posted before if I'm remembering it correctly. It's a good vid. Is it the one with pencils or tinker toys? I took a quick clip of how the Wavetrac LSD worked in my car with transfering the power to the ground. http://www.e90post.com/forums/showth...5069&highlight __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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05-17-2010, 11:46 AM	#7
Maestro Major 1038 Rep 1,268 Posts Drives: 2007 335i Sedan, 2021 X3 Join Date: Nov 2006 Location: Philadelphia iTrader: (0)	Back during a simpler time, they had time to explain how things really worked. There is a good show on the Science Channel that does a pretty good job of explaining things like this.
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05-17-2010, 11:55 AM	#8
Maestro Major 1038 Rep 1,268 Posts Drives: 2007 335i Sedan, 2021 X3 Join Date: Nov 2006 Location: Philadelphia iTrader: (0)	Here is one on torch converts, not the 1930's vintage but this guys does an okay job, but he commentary is a bit distracting
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05-17-2010, 12:01 PM	#9
scottp999 Brigadier General 133 Rep 4,764 Posts Drives: 4runner SR5 Join Date: Mar 2007 Location: MD iTrader: (2) Garage List 2007 BMW 335 [9.00]	Great video. It just shows how pathetic it is that BMW does not offer the option of an LSD in non-M cars.
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05-17-2010, 12:16 PM	#10
SoQuick Stock 10 Rep 243 Posts Drives: Nothing now Join Date: Nov 2008 Location: Southern NH iTrader: (0) Garage List 2009 135i [0.00] 2001 S8 [0.00]	IT IS CALLED!!!!! THE DIFFERENTIAL!! cool find +1
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05-17-2010, 01:42 PM	#11
KyLu II FREE DREAMK 162 Rep 9,321 Posts Drives: the shiiit! Join Date: Aug 2009 Location: Vineland, NJ iTrader: (6) Garage List 2011 Lexus LFA [3.76]	now i know!!! __________________
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05-17-2010, 02:00 PM	#12
yandy Lieutenant Colonel 108 Rep 1,973 Posts Drives: 2009 e92 MR "Civic" ///M3 Join Date: Feb 2009 Location: Miami, FL iTrader: (3) Garage List 2009 BMW M3 [0.00]	That was awesome! __________________ \|\| DCT \| ESS Tune \| ACM Test-pipes \| AA Green Filter \| Swift Spec-R Springs \| Stoptech ST-40 F \|\| \|\| My Youtube Channel \|\|
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05-17-2010, 02:05 PM	#13
Jeff@TopGearSolutions 3442 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	LOL that was actually pretty helpful
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05-17-2010, 02:32 PM	#14
thwgw24 Major 60 Rep 1,065 Posts Drives: RB PWRED E90 N54 6MT Join Date: Aug 2006 Location: Bellevue, WA iTrader: (19) Garage List 07' E90 335i [0.00]	great video!! I now understand what I was paying for. __________________ RB Turbo/Procede V5/Vishnu PWM Meth Injection Kit/Vishnu DCI/AR Catless DP/AE Performance Exhaust(Sold)/Helix FMIC/Forge DVs/Rixster Vent Boost Gauge/Wavetrac LSD/KW V3/ACT Street Clutch Kit
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05-17-2010, 08:52 PM	#15
IlChengis once Treppiede 63 Rep 915 Posts Drives: 2012 E92 M3 Join Date: Aug 2008 Location: Miami and Atlanta iTrader: (4)	Hehe, glad you guys enjoyed it as much as I did. I feel like explaining how open diffs work to the whole world now. Mr.5, this video did not involve pencils or similar props. Did you get a chance to see it from home? If they're different videos, could you share the one you were referring to if you find it? Your video demo was pretty cool. Did you actually drive forward with a normal car jack on one side, or was that a special jack made to roll? Balls of steel either way. -Walter __________________ 2013 E92 M3 \| 6MT \| AlpWhite \| SilverNovillo \| CarbonTrim \| ZCP \| PremiumPkg \| Alarm 2009 E92 335i \| 6MT \| AlpWhite \| CoralRed \| AlumTrim \| M-Sport \| Nav \| Logic7 \| Alarm (sold to a friend - still in the family)
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05-18-2010, 03:03 PM	#16
BrianMN Banned 114 Rep 2,428 Posts Drives: 4 Door Family Sedan Join Date: Sep 2009 Location: Minneapolis iTrader: (7)	This makes me beg the question: Why can't we weld the spiders together and make it Posi? It might seem like a joke to do that to a BMW...but why not? Welding diffs is nothing new, and something I actually have experience with...just hesitant to do to my precious 335. I've welded diffs in 3 trucks, 4 muscle cars, 2 golf carts and it works perfectly. A differential is a differential is a differential. Granted, the inside tire spins/chirps when cornering, but why not do this? I'd much rather have Posi for free than get a LSD for $2500.
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05-18-2010, 09:10 PM	#20
fruition3000 Captain 29 Rep 769 Posts Drives: Down Ocean Drive Join Date: Apr 2010 Location: Le-Bron Town iTrader: (0)	Good post thanks __________________
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05-19-2010, 02:10 PM	#21
euromoda84 Private 10 Rep 77 Posts Drives: f30 335i Join Date: Nov 2009 Location: So Cal iTrader: (0)	wow thats a great lil video! good find!
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