How does the semi automatic transmission work.

[bcoulter19]

When I saw the title I was going to say Very well .

[vided]

I think it works real nice.

[gypsy_100]

Here are two posts I put in some time ago. Maybe this will help.

First post:
The SE is not an "automatic" transmission. The transmission is the same as the SM -- a manual transmission with a conventional motorcycle-type multiplate wet clutch. The difference is that BRP designed an automatic clutch control system and shifting system to shift the manual transmission. They also added a centrifugal clutch mechanism to keep the clutch disengaged at idle when not moving. Conventional thinking and experience with "automatic" transmissions does not apply. If you downshift the SE or downshift the SM, you are doing the same thing and with the same results.

Second post:
The clutches for both SM and SE's are essentially the same -- multi-plate wet motorcycle clutches. The centrifugal part of the SE arrangement is a centrifugally actuated mechanism that disengaged the conventional multi-plate clutch when the rev's dropped low such as when you were stopped and the engine is idling. For normal shifting, the clutch operation was not centrifugal but was operated by oil pressure and control solenoids that would quickly disengage the clutch perfectly synchronized with the shifting solenoids to get the next higher or lower gear. The 2014's did away with the centrifugal mechanism for the SE's and use computer programming to gradually engage the clutch from a standstill so you get a smooth start without stalling the engine or without excessive clutch slipping. The same way the automotive "dual clutch" transmissions do.

[Bob Denman]

Thanks for the explanation.
But we sure could have used Scotty batting clean-up, for this one!

[SNOOPY]

What's a Scotty?

Isnt that an English dog?

[Bob Denman]

What's a Scotty?

Isnt that an English dog?

Everybody knows knows that they are Scottish Dogs...
Scottish Terrier.jpg

English...
We are surrounded by the "Death of Intellect"

[MikeinGA]

The SE5 is an computer controlled with hydraulic shifting and clutch control using the SM5 transmission. It uses things like engine speed, mph, clutching, and keeping track of what gear your in and much more. It's one of the better systems I have seen. If you want more information buy a workshop manual and read up on it. For me to sit down and explain the system, we would need a few hours to show you how it works. That's about the best I can do online.


Mike

[BajaRon]

Everybody knows knows that they are Scottish Dogs...
Scottish Terrier.jpg

English...
We are surrounded by the "Death of Intellect"

Intellect has not died.... It has simply moved on....

[NZSpyderRyder]

What's a Scotty?

Isnt that an English dog?

SCOTTY.....doesn't the name give you some sort of clue ?

A short lesson, Great Britain/United Kingdom is made up of four countries, England, Scotland, Wales & Northern Ireland.

Now it's homework time.

Where does a Welsh border collie come from ?
Where does an Old English sheepdog come from ?
Where does an Irish wolfhound come from ?

Answers on a postcard please.

[Bob Denman]

SCOTTY.....doesn't the name give you some sort of clue ?

A short lesson, Great Britain/United Kingdom is made up of four countries, England, Scotland, Wales & Northern Ireland.

Now it's homework time.

Where does a Welsh border collie come from ?
Where does an Old English sheepdog come from ?
Where does an Irish wolfhound come from ?

Answers on a postcard please.

What should we have expected from a "Beagel"?

[SNOOPY]

SCOTTY.....doesn't the name give you some sort of clue ?

A short lesson, Great Britain/United Kingdom is made up of four countries, England, Scotland, Wales & Northern Ireland.

Now it's homework time.

Where does a Welsh border collie come from ?
Where does an Old English sheepdog come from ?
Where does an Irish wolfhound come from ?

Answers on a postcard please.

Engalnd
Scotland
Iceberg
Goldberg

Whatever

From this side of the pond, no difference in. England and Scotland.


Hope that English guy doesn't see this...or is he Scottish?

.

[wd8ajj]

SCOTTY.....doesn't the name give you some sort of clue ?

A short lesson, Great Britain/United Kingdom is made up of four countries, England, Scotland, Wales & Northern Ireland.

Now it's homework time.

Where does a Welsh border collie come from ?
Where does an Old English sheepdog come from ?
Where does an Irish wolfhound come from ?

Answers on a postcard please.

Most come from the local Animal Shelter

[SNOOPY]

Here are two posts I put in some time ago. Maybe this will help.

First post:
The SE is not an "automatic" transmission. The transmission is the same as the SM -- a manual transmission with a conventional motorcycle-type multiplate wet clutch. The difference is that BRP designed an automatic clutch control system and shifting system to shift the manual transmission. They also added a centrifugal clutch mechanism to keep the clutch disengaged at idle when not moving. Conventional thinking and experience with "automatic" transmissions does not apply. If you downshift the SE or downshift the SM, you are doing the same thing and with the same results.

Second post:
The clutches for both SM and SE's are essentially the same -- multi-plate wet motorcycle clutches. The centrifugal part of the SE arrangement is a centrifugally actuated mechanism that disengaged the conventional multi-plate clutch when the rev's dropped low such as when you were stopped and the engine is idling. For normal shifting, the clutch operation was not centrifugal but was operated by oil pressure and control solenoids that would quickly disengage the clutch perfectly synchronized with the shifting solenoids to get the next higher or lower gear. The 2014's did away with the centrifugal mechanism for the SE's and use computer programming to gradually engage the clutch from a standstill so you get a smooth start without stalling the engine or without excessive clutch slipping. The same way the automotive "dual clutch" transmissions do.

Great post.

.