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 The_Bronze.
A.k.a.: Bronze
Custom Title Time!
Minister of Volkswagenism
Posts: 1922
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Location: Toronto - Westlakes NSW
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 posted on January 18th, 2004 at 02:30 AM |
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Semi-automatic boxes- What do you think?
Yes I know I have raised this before on the old forum a couple of years ago but since this section did so well on the scoop quiz proving there is a
lot of talent walking it halls I was hoping to raise it again.
Please argue the pro's and con's of semi-automatic over manual as an Offroad tranny?
Examples:
 Con - Hotter and no more roll start (Solution if any)
 Pro - Better traction control (Debatable).
Also - suggested types / models, improvements, anecdotes, engine combinations, expert rebuild shops etc.
I was fortunate enough to go for a ride in MR930's semi-auto gold fleck manx and it was a real treat. Just like a go-kart - Stop and Go! that was
it. I have no idea and didn't ask what it was like offroad on the slopes and soft stuff though.
The Bronze.
[size=4]Bronze.[/size]
Rathmines, Lake Macquarie, NSW.
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The_Bronze.
A.k.a.: Bronze
Custom Title Time!
Minister of Volkswagenism
Posts: 1922
Threads: 238
Registered: September 1st, 2002
Member Is Offline
Location: Toronto - Westlakes NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Enlightened.
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| posted on January 18th, 2004 at 02:34 AM |
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Semi-automatic boxes- What do you think?
Yes I know I have raised this before on the old forum a couple of years ago but since this section did so well on the scoop quiz proving there is a
lot of talent walking it halls I was hoping to raise it again.
Please argue the pro's and con's of semi-automatic over manual as an Offroad tranny?
Examples:
Con - Hotter and no more roll start (Solution if any)
Pro - Better traction control (Debatable).
Also - suggested types / models, improvements, anecdotes, engine combinations, expert rebuild shops etc.
[size=6]V[/size]
I was fortunate enough to go for a ride in MR930's semi-auto gold fleck manx and it was a real treat. Just like a go-kart - Stop and Go! that was
it. I have no idea and didn't ask what it was like offroad on the slopes and soft stuff though.
The Bronze.
[size=4]Bronze.[/size]
Rathmines, Lake Macquarie, NSW.
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56astro
Custom Title Time!
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| posted on January 18th, 2004 at 07:57 PM |
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"7 replies" ????
Can only see 2
:alien
VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa |
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Craig Torrens
A.k.a.: Craig Torrens
Scirocco Rare
6 times Australian, 7 times State Hillclimb Class Champion
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| posted on January 18th, 2004 at 08:14 PM |
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sorry Bronze that I'm not complying with your request  just
thinking out aloud...............how sensitive is the switch on the gear lever, would the rough roads etc trigger the disengaging mechanism ?
Is there lots of oil lines etc to consider re-routing?...............diff ratio with large tyres?
I have seen a type 3 auto box being used in a buggy, worked very well.
sorry not much help although I know new auto's are a pleasure to go
offroading with.
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68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
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 posted on January 18th, 2004 at 08:29 PM |
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they are great in a semi auto beetle.....
There wouldn't be any problems in the rough stuff unless Your leg accidently knocked the gearlever, and disengaged the clutch....
Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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MR930
Wolfsburg Wizard
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| posted on January 19th, 2004 at 05:47 AM |
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My Manx was using a type3 auto not a semiauto . It drove real good on and offroad . I think a semi auto would be good offroad too. There is a Manx in
Grafton running one and he's real happy with it .
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The_Bronze.
A.k.a.: Bronze
Custom Title Time!
Minister of Volkswagenism
Posts: 1922
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| posted on January 19th, 2004 at 08:15 AM |
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This is how much I know because I didn't know there was a straight auto available. Other wise I would have asked about that. I was actually
considering a type 2 auto into a buggy project.
How was yours for 'over heat' and 'traction' Mark?
Bronze
[size=4]Bronze.[/size]
Rathmines, Lake Macquarie, NSW.
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Baja Wes
Bishop of Volkswagenism
V6 Baja Pioneer
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| posted on January 19th, 2004 at 08:42 AM |
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The type 3 auto's can be fitted, but will require some fairly major mods to the frame horns, as the auto box is wide and won't fit between
them. I think it is part of the reason why IRS type 3's got rid of the frame horns, to make way for an auto box.
type 2 autos have the same prob.
The real advantage of an auto / semi-auto / anything with a torque convertor, is that it has a torque convertor.
Torque convertors are not just nice auto clutches, they are actually torque multipliers. They effectively multiply the engine torque a number of times
while the inital take-up is occuring. This is good offroad, and makes hill starts on slippery hills much easier than a car with a clutch.
I haven't had any experience with the VW auto's, but have had mates with auto and manual 4wds that I've driven and noticed the
auto's were more capable.
I probably wouldn't go for a stick shift as I hear it is difficult to get it to work with anything bigger than the stock 1600.
I also know some of the serious offroad racing boy's use tricked up 2lt auto's in their race buggies. They install some very special plates
in the sump part of the auto to change the internal shifting circuitry of the gearbox. This allows them to make the auto's a manually shifted
sequential clutchless gearbox. I would love to use this set-up one day, but with the torquey V6 it probably isn't really needed.
As for temp, well I guess it all depends on what your doing. I would try it and see, if it gets hot fit an oil cooler to the auto. Shouldn't be
too hard.
A guy with a red manx in the Manx Club is running a type 3 auto, and he thinks it's great in the sand and offroad.
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The_Bronze.
A.k.a.: Bronze
Custom Title Time!
Minister of Volkswagenism
Posts: 1922
Threads: 238
Registered: September 1st, 2002
Member Is Offline
Location: Toronto - Westlakes NSW
Theme: UltimaBB Pro Blue ( Default )
Mood: Enlightened.
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| posted on January 19th, 2004 at 10:25 PM |
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Thanks Wes-
The physics of having a torque converter seems to add up for me. Having fluid application of power to the wheels can only be an advantage but at what
expense? I have not had the opportunity to experience it or sit around the camp fire and ask it hence why the Forum is an excellent vehicle for such a
discussion.
I recall now about the horns and the fitting is an issue.
My auto experience was 4 cyl underpowered Auto Hilux heading up Barrington Tops. Whined for 1/2 an hour before mashing the cam. 2nd was to low and 3rd
to high. Eventually died 3/4 of the way up. Hasn't laft a good impression. I hope to change that.
Anyone else?
[size=4]Bronze.[/size]
Rathmines, Lake Macquarie, NSW.
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