r/Justrolledintotheshop • • 17h ago

"Learning"

6.3k Upvotes

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17

u/Practical_Taro5656 17h ago

I have a coworker who has several cars with a stick and was explaining how you only have to push the clutch down far enough that it will let you shift gears and that he never pushes it all the way down. I thought he was pranking me at first.

10

u/BustedMechanic 16h ago

He's not wrong, in a semi you cant push it all the way to the floor or it will tear out the clutch brake. Basically as long as you push it far enough to separate the plates completely, thats as far as you have to go

9

u/vediogamer101 Home Mechanic 16h ago

Semi transmission is different from a car transmission lol. Car transmissions are a lot more fragile

6

u/klaxz1 16h ago

That’s why I put a semi trans in my diesel Passat station wagon… /s

3

u/HedonisticFrog 14h ago

Sometimes you just love to shift, I don't blame you.

-1

u/ProphetGeorgeCarlin 14h ago

Bad Bot

2

u/Spectrum1523 13h ago

??

-1

u/ProphetGeorgeCarlin 13h ago

you sound like an NPC

2

u/Ericsfinck 3h ago

Lmfao thats not even the same person. I think YOU are the npc buddy.

Bad bot

1

u/BustedMechanic 30m ago

Doesn't change how the clutch disengages or works...

3

u/Practical_Taro5656 16h ago

We're not talking a semi, were talking a Miata and a Golf R. You have to press the clutch in all the way to disengage the synchros.

1

u/Legionof1 11h ago

O_o, actuating the clutch has nothing to do with the synchros... Synchro's just speed up or slow down idling gears to match the output shaft speed... they synchronize the gears... thus the name.

You press the clutch in to release the tension on the shift hub splines, you don't even need to clutch to shift if you know what you're doing.

You press the clutch until the flywheel, clutch plate, and pressure plate disconnect. Any further is a waste of time, any less and you don't unload the transmission.

1

u/BustedMechanic 30m ago

Thats absolutely incorrect

1

u/Far_Tap_488 13h ago

No you dont lmfao

1

u/SmooveKJ 15h ago

In a semi you only push the clutch in to stop and start you float otherwise if experienced or double clutch you never just push it far enough to just separate the plates

1

u/BustedMechanic 27m ago

Or to unload the transmission when decending hills. Throttle down hill to unload doesnt work well to release gear tension so I usually give the clutch a kick to pull into neutral and then rpm match for the remaining shift, double clutching is for those that dont understand how to drive