Synchro'd vs. non-synchro'd

[wentz912]

So I was reading an article in one of the popular 4wd mags today at school, and there was an article in there about manual transmissions, and the whole deal with synchronized and non-synchronized gears. Anyways, I thought for one I would open it to discussion over which you prefer to have in your tranny, as well as try and find out which gears are which type in my 84 toyota pickup so I can drive it the absolute best without trying to force it to do something it won't do.

Let the carnage begin.

 

[TreeClimber]

Please post a link to the article, or the mags' home page, where I can read this article. I've not driven a non-syncro'd tranny.

 

[Avanteone]

There are transmissions /w a non-synchro'd first gear, but not completely non-syncro'd transmissions.

J

 

[Glenn]

My brother drove a non-synchro...that was in a Freightliner conventional. What do you know about double clutching? :redneck:

 

[CrustyJeep]

Non synchro'd trannies are a thing of the distant past for anything like you'd put in a wheeling rig. Unless you're talking about granny first, that's still commonly non-syncro.

All else being equal, I can't imagine why you'd ever choose non-syncro'd over syncro'd in anything, including the x-case.

 

[wentz912]

Alright working on it, it was OFF ROAD mag, not sure waht issue, I'm workingo n getting the link though.

 

[wentz912]

Non synchro'd trannies are a thing of the distant past for anything like you'd put in a wheeling rig. Unless you're talking about granny first, that's still commonly non-syncro.

All else being equal, I can't imagine why you'd ever choose non-syncro'd over syncro'd in anything, including the x-case.

See that's why I brought up the topic, I was curious about what was what anymore you know. Aren't almost all reverse girls still Non-Synchro so that you can't slam it from a forward gear to reverse? It's always felt like the one in my yota is.

There are transmissions /w a non-synchro'd first gear, but not completely non-syncro'd transmissions.

J

That's what else I was trying to find out, just doing more and more learning you know?

 

[Dain Bramage]

i dunno about the reverse girls, not sure i want to, either :eeek: but reverse gear is not synchro'd, and i think it might be straight cut, too.

 

[CrustyJeep]

reverse gear is not synchro'd, and i think it might be straight cut, too.

All that I have seen are.

It has nothing to do with not being able to slam into reverse. It's just the way reverse is used, synchros would be of little benefit for the extra cost and complexity.

 

[JThompson]

I do know that many of the Land Cruiser trannies of old had synchro reverse... great for getting into reverse when speed and momentum were lost whilst hillclimbing. Also, VW's have a synchro reverse most of the time. My buddy used it when it was icy on the pass and slipped into oncoming traffic and spun 'em about 6g's to slow down and drift back into safety.

They took it out because of the people who accidentally would just "slam" it in, I suppose.

 

[Dain Bramage]

so with a synchro'd reverse, you can go straight from 5th to reverse?

 

[skrause]

so with a synchro'd reverse, you can go straight from 5th to reverse?

Not on a 5 speed, there's an interlock so you don't try to shift to "6th" at high speed. :redneck:

 

[skrause]

So I was reading an article in one of the popular 4wd mags today at school, and there was an article in there about manual transmissions, and the whole deal with synchronized and non-synchronized gears. Anyways, I thought for one I would open it to discussion over which you prefer to have in your tranny, as well as try and find out which gears are which type in my 84 toyota pickup so I can drive it the absolute best without trying to force it to do something it won't do.

Let the carnage begin.

As far as in your truck, reverse and the transfer case are not synchronized. 1-5 are.

 

[skrause]

All that I have seen are.

It has nothing to do with not being able to slam into reverse. It's just the way reverse is used, synchros would be of little benefit for the extra cost and complexity.

Reverse is in my nv6500. :fawkdancesmiley:

 

[mark]

I you ever get in an OLD truck (I'm talking 40's/50's and OLDER) you'll find out what a non-syncro'd tranny is. Gear crashers. You have to match engine RPM to road/gear speed to shift.... or grind and push


most modern trannys (90's and newer) are fully syncro'd 1st through whatever. Older truck tranny's might not have a syncro first cause it was less necessary, and a strait cut gear is stronger than a helical cut gear usually used with a synco. And for 1st (granny) gear you trypicaly wanted the extra strength.
________
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[Totalled]

My '61 Falcon had a non syncro first in it's 3 on the tree.

 

[Glenn]

I you ever get in an OLD truck (I'm talking 40's/50's and OLDER) you'll find out what a non-syncro'd tranny is. Gear crashers. You have to match engine RPM to road/gear speed to shift.... or grind and push...

Or double clutch a lot.

 

[bobracing]

If you must know what it's like, go drive your truck without the clutch.
2-4 range usually are the easiest to change when learning. 1-2 & 4-5 (overdrive) are pains.