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re: Question for gearheads

Posted on 3/2/16 at 2:14 pm to
Posted by AwesomeSauce
Das Boot
Member since May 2015
11633 posts
Posted on 3/2/16 at 2:14 pm to
quote:

You're advocating for coasting around out of gear,

I said it was better than engine braking, which it is. Neither would be my choice method.
Posted by Spirit of Dunson
Member since Mar 2007
23112 posts
Posted on 3/2/16 at 2:15 pm to
So you are saying the answer is
c) slow down in the higher gear, then down shift when the lower speed is reached?
Posted by CAD703X
Liberty Island
Member since Jul 2008
94691 posts
Posted on 3/2/16 at 2:15 pm to
I downshift all the time and just replaced both master and slave cylinders on my clutch. Maybe that contributed to it failing.....or it's because I have 322,0000 miles on it.
Posted by AwesomeSauce
Das Boot
Member since May 2015
11633 posts
Posted on 3/2/16 at 2:15 pm to
quote:

He didn't expressly say that anywhere in the OP.

quote:

downshift and then slow down in gear

He didn't?
Posted by LNCHBOX
70448
Member since Jun 2009
89397 posts
Posted on 3/2/16 at 2:16 pm to
quote:

He didn't?


Where in that can you say with certainty that he isn't using the brakes also?
Posted by AwesomeSauce
Das Boot
Member since May 2015
11633 posts
Posted on 3/2/16 at 2:17 pm to
quote:

So you are saying the answer is
c) slow down in the higher gear, then down shift when the lower speed is reached?


Reduce engine speed while in the range for the gear then move to the lower gear?! Yes.
Posted by AwesomeSauce
Das Boot
Member since May 2015
11633 posts
Posted on 3/2/16 at 2:20 pm to
quote:

Where in that can you say with certainty that he isn't using the brakes also?

He's asking how to downshift on the internet. Excuse me for assuming he was asking coast or engine brake.
Posted by LNCHBOX
70448
Member since Jun 2009
89397 posts
Posted on 3/2/16 at 2:21 pm to
quote:

He's asking how to downshift on the internet


Technically he's asking how to slow down.

ETA: You're not going to slow down much just coasting out of gear, so that's basically the worst advice possible under most conditions. And for the 3rd time, I'm not saying he needs to drop from 5th to 2nd.
This post was edited on 3/2/16 at 2:22 pm
Posted by soccerfüt
Location: A Series of Tubes
Member since May 2013
76156 posts
Posted on 3/2/16 at 2:27 pm to
I slow down like the Shuttle did on re-entry.

I make broad, long Esses to expose a side profile of the vehicle and peel off speed.

I make my passenger(s) stick their arms out the window(s) too.

The right answer is coast to a stop, don't use your clutch, etc.
Posted by AwesomeSauce
Das Boot
Member since May 2015
11633 posts
Posted on 3/2/16 at 2:27 pm to
quote:

echnically he's asking how to slow down.

Touche

quote:

And for the 3rd time, I'm not saying he needs to drop from 5th to 2nd.

Did I say you did?!

quote:

You're not going to slow down much just coasting out of gear

Yea, without the brakes I agree. The way the OP was worded it seemed the question was a.) use gears to slow down or b.) use brakes to slow down.
Posted by LNCHBOX
70448
Member since Jun 2009
89397 posts
Posted on 3/2/16 at 2:28 pm to
quote:


The right answer is coast to a stop, don't use your clutch, etc.


Posted by LNCHBOX
70448
Member since Jun 2009
89397 posts
Posted on 3/2/16 at 2:29 pm to
quote:

Did I say you did?!


It wasn't just for you. Based off the way people are downvoting my post here, they are either misinterpreting or are all shitty drivers.
Posted by Old Money
LSU
Member since Sep 2012
41977 posts
Posted on 3/2/16 at 2:45 pm to
I drive a manual everyday, I:
- brake
- throw gear into neutral
- pump gas pedal so the revs catch up
- downshift


I rev match. I don't know how to downshift any other way.
This post was edited on 3/2/16 at 2:46 pm
Posted by Spirit of Dunson
Member since Mar 2007
23112 posts
Posted on 3/2/16 at 3:05 pm to
Sorry for not being more specific. I thought Rev matching when shifting was assumed.
My question was really about braking/slowing out of gear vs engine braking.

ETA.. i never knew the term engine braking, only the concept.
This post was edited on 3/2/16 at 3:14 pm
Posted by DownshiftAndFloorIt
Here
Member since Jan 2011
72804 posts
Posted on 3/2/16 at 3:23 pm to
Due to my handle, I'm more qualified than anyone here to answer this.

1) Downshifting is no harder on the clutch than upshifting if you do it correctly. Keep the relative speed of the clutch to the flywheel at zero and you aren't hurting anything.

2) downshifting is hard on syncronizers. How hard it is depends on how hard you downshift. Don't skip gears. If you want to downshift from 6th to 4th, go 6-5-4 even if you don't let out of the clutch in 5th. It helps keep the shaft speeds close so you aren't banging stuff. If you do go direct 6-4, let out the clutch while in neutral to get the transmission guts all sync'd up.

Moral of the story-if it all feels extremely smooth, it isn't hurting anything. If you're having to force shite and it isn't rev-matched when you let out than you're obviously accelerating wear. This isn't rocket science by any stretch.
This post was edited on 3/2/16 at 3:27 pm
Posted by Hardy_Har
MS
Member since Nov 2012
16333 posts
Posted on 3/2/16 at 3:26 pm to
If you rev match it's really no more harmless than an upshift I'd suppose.
Posted by Hardy_Har
MS
Member since Nov 2012
16333 posts
Posted on 3/2/16 at 3:31 pm to
quote:

downshifting is hard on syncronizers. How hard it is depends on how hard you downshift. Don't skip gears. If you want to downshift from 6th to 4th, go 6-5-4 even if you don't let out of the clutch in 5th. It helps keep the shaft speeds close so you aren't banging stuff. If you do go direct 6-4, let out the clutch while in neutral to get the transmission guts all sync'd up.


This post was edited on 3/2/16 at 3:35 pm
Posted by Coon
La 56 Southbound
Member since Feb 2005
18579 posts
Posted on 3/2/16 at 3:34 pm to
I use the pedal in the middle to slow down.
Posted by Old Money
LSU
Member since Sep 2012
41977 posts
Posted on 3/2/16 at 3:46 pm to
quote:

Moral of the story-if it all feels extremely smooth, it isn't hurting anything. If you're having to force shite and it isn't rev-matched when you let out than you're obviously accelerating wear. This isn't rocket science by any stretch.


I raced shifter karts for years so I translated that experience into on the road driving. I know people who drive manual but don't rev match. Seems so foreign to me.

quote:

ETA.. i never knew the term engine braking, only the concept.


Ahh, well I don't engine brake often. Very seldom. Seems rough. Smooth is fast after all.
This post was edited on 3/2/16 at 3:46 pm
Posted by bovine1
Member since Dec 2004
1383 posts
Posted on 3/2/16 at 5:54 pm to
Coasting is a moving violation in some states. In a big rig it is for sure. Brake in the higher gear until road speed and rpms are right for the lower gear then downshift. It's a good thing ya'll got synchronized transmissions.
This post was edited on 3/2/16 at 5:55 pm
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