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How an automatic transmission works #5333435 01/27/20 08:08 AM
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supton Offline OP
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[Linked Image]


2011 Toyota Camry, base, 2.5L/6MT, 201k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 157k, ours
1999 Toyota Camry LE, 2.2L/4AT, 223k, his
Re: How an automatic transmission works [Re: supton] #5333436 01/27/20 08:10 AM
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supton Offline OP
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Of course I ripped that off from the web, it's not my idea. And someone else retaliated, at some point.

[Linked Image]


2011 Toyota Camry, base, 2.5L/6MT, 201k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 157k, ours
1999 Toyota Camry LE, 2.2L/4AT, 223k, his
Re: How an automatic transmission works [Re: supton] #5333442 01/27/20 08:18 AM
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Davejam Offline
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Haha thankyou

Re: How an automatic transmission works [Re: supton] #5333457 01/27/20 08:34 AM
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skyactiv Offline
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Wife: 15' Audi A4 quattro 6 speed manual
Me: 18' Elantra Sport 6 speed manual
The rude guy that points out reality


Re: How an automatic transmission works [Re: supton] #5333459 01/27/20 08:42 AM
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RDY4WAR Online Content
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I made a version of that a while back...

[Linked Image]

A torque converter does something that a clutch simply can't and that's multiply torque.

The NHRA Pro Stock cars will always have a special place with me though.


Last edited by RDY4WAR; 01/27/20 08:50 AM.

"He who is without oil, shall throw the first rod." - Compressions 9:1
Re: How an automatic transmission works [Re: RDY4WAR] #5333465 01/27/20 08:45 AM
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supton Offline OP
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Originally Posted by RDY4WAR
I made a version of that a while back...

[Linked Image]

A torque converter does something that a clutch simply can't and that's multiply torque.

I think I saw that version too--I had come across the first one and wanted to find a better version to post, saw a few variants.

All fun and games of course.


2011 Toyota Camry, base, 2.5L/6MT, 201k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 157k, ours
1999 Toyota Camry LE, 2.2L/4AT, 223k, his
Re: How an automatic transmission works [Re: supton] #5333479 01/27/20 08:56 AM
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Chris142 Online Content
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I bought my cousin that shirt for xmas!


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
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Re: How an automatic transmission works [Re: supton] #5333482 01/27/20 08:58 AM
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gman2304 Online Content
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Nice video, Ronnie Sox was called Mr shifter back in the day. It will be a sad day indeed when pro stock goes to automatics!

Re: How an automatic transmission works [Re: supton] #5333486 01/27/20 09:04 AM
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jeepman3071 Online Content
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Whether I prefer manual or auto depends on the vehicle application. There are some really dreadful autos that are programmed for fuel economy, and there are some that are far superior to manual. The ZF 8-speed with proper programming is a great transmission. Then you have the manuals with rubber band shift feel or gear lock-outs to meet CAFE. duh


1998 Jeep Wrangler Sahara 4.0L/5MT (156k) - PHM 10w30, Wix 51085
2009 BMW 328i N51 (58k) - Liqui Moly 5w40, MANN HU816X
Re: How an automatic transmission works [Re: supton] #5333499 01/27/20 09:28 AM
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JohnG Offline
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How does a Dual Clutch automatic transmission work?

Probably like the regular automatic, but 2 seconds faster in the end!

Re: How an automatic transmission works [Re: jeepman3071] #5333514 01/27/20 09:44 AM
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Originally Posted by jeepman3071
Whether I prefer manual or auto depends on the vehicle application. There are some really dreadful autos that are programmed for fuel economy, and there are some that are far superior to manual. The ZF 8-speed with proper programming is a great transmission. Then you have the manuals with rubber band shift feel or gear lock-outs to meet CAFE. duh


The ZF in my Ram is the first automatic I've ever had that I couldn't shift any better than myself.. its a great transmission.


2016 Ram 1500 5.7 Hemi 30k QSUD 5w-20 and Mopar filter
1988 F-150. 4.9 I6 251k. 10w-40 QSHM Motorcraft FL1A
2007 Mazda 3 2.3 130k 5w-30 syn-blend and Denso filter
Re: How an automatic transmission works [Re: supton] #5333570 01/27/20 10:42 AM
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Ronnie Sox, FTW!

Re: How an automatic transmission works [Re: supton] #5333625 01/27/20 11:24 AM
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JLTD Offline
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LOL Those are all great!

With all the newfangled transmissions nowadays, some racing seems like more of a science than a driving skill test.

Loved the cigar in that video! Also like the elbow flying up in preparation for each shift.

If my vehicle came with a manual, that's what I would be driving…


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Re: How an automatic transmission works [Re: supton] #5333626 01/27/20 11:25 AM
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Kestas Offline
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My dad made a career of designing automatic transmissions for the automotive industry. They were once tasked to build transmissions for racing. He said they could not design something to outperform existing manual transmissions and the drivers who use them. I'm sure weight, power loss, and shifting protocols were considered were parts of the variables.

Conversely, he chuckled anytime somebody tried to drive an automatic like a manual. The automatic picks the best shift points. Just leave it in Drive and go!

Re: How an automatic transmission works [Re: Kestas] #5333652 01/27/20 11:47 AM
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Originally Posted by Kestas
Conversely, he chuckled anytime somebody tried to drive an automatic like a manual. The automatic picks the best shift points. Just leave it in Drive and go!

Back in the day that WAS funny.

However with modern automatics set at the factory in many cases just for mpg, the "best" shift point - which is different between vehicles, their drivers, and how they are used - isn't available without a tune. Same goes for throttle response.


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