hydraulic throttle pedal assemmbly

Alain V · Dec 21, 2002

I recently saw this on a VW sandrail "dunebuggy",, and thought it may be an alternative to using a throttle cable for applications such as the GT40.

I have not tried this myself. For those having trouble with cables/mounting etc, it might be an easier solution?

look here: http://www.cbperformance.com/catalog.asp?ProductID=920

GT40 NZ · Dec 21, 2002

I have a one fitted to my car Alain and I can support your comments. They work and beat cables onto big carbs.

Bob Putnam · Dec 27, 2002

Dave,

How smoothly does it work? I've got one here (the CB unit)for evaluation and it seems to be rather sticky.

The CB piece is also a sealed design, and I'd rather use hard lines for most of the run.

Alain V · Dec 27, 2002

Maybe the system requires the use of a softer than usual return spring???

I did not look close enough to the one on the buggy to notice it's plumbing was sealed.
That is a drawback, since it would be a much cleaner installation using only the amount of hose needed.

Is there a "bleeder" at the slave unit?

[ December 27, 2002: Message edited by: Alain Vanhollebeke ]

Bo Eliasson · Dec 29, 2002

I too have a hydraulic throttle pedal assembly and it works beautifully.
I decided to use the hydraulic one after a friend of mine had some really nasty experiences with a sticky throttle cable in his Countach replica.
I use a standard return spring. The only thing you have to worry about is bleeding it completely or you may find the idle to raise when it't getting really hot under the rear clip.
I bought it from Summit Racing katalogue in 1997. I don't know if they still have it.

Bob Putnam · Dec 30, 2002

Alain,

The CB unit has a filler/bleeder at one end only. The only way that I can see it being bled is to have the tubing on a continuous rise from the non-vented end to the bleeder. I'll have to see whether the other unit is a different design.

GT40 NZ · Dec 30, 2002

Hi ya Bob,

Can confirm all the above. The feel it good. I have a dual pumper 650 Holley at present on my race 302. Bleeding is the most important and takes a little time. One valve is present on mine (at he carb end) and its a two person but simple job of turning the valve and adding additional fluid in the resevior after it is taken down into the system.

I had to do this twice. Bled then drove it encountered the air expansion at orperating temperature and did again. Problems over and a smooth action.

Hope this helps,

FredGT40 · Jan 2, 2003

Alain,

Nylon tubing dims should be how much for the GT40?

Tx
Rgds
Fred

Alain V · Jan 2, 2003

Hi Fred,
I do not completely understand your question.

Are you asking about the dimensions of the kit? (how long of a tube to use)

I'm not sure which kit would be best for the GT40. I have only seen this system used on a VW powered dune buggy.

Dave or GeeTee may be able to help since they both are using this type of system.

I see you are in Brussels. This is where I was born. Most of my family is still living in Belgium. Have you ever heard of
"manu-service"?

FredGT40 · Jan 3, 2003

Alain,

Manu Service:The name rings a bell but what are they doing?
My question was on the
lenght of the tube between pedal and carb as engines is on the back and is the tube long enough?
Hope you will understand my Belgian accent...
Rgds
fred

Alain V · Jan 3, 2003

Manu-Service is my Uncle's company in Brussels.
They do the distribution and shipping of books, videos,collectibles
etc, such as(editions atlas).

If it is easier for you, I can still read and speak french very well....
....but my spelling/writing is terrible.

The hydraulic accelorator is available in two lengths,

the short one has an 8 foot hose, this is 2.4meters long.

The long one is 10 feet= 3 meters long.

Which one you need depends on how you plan to route the hose.
....But to be safe,it is always better to have a little too long, than a little too short.

jimbo · Jan 4, 2003

Hi Alain: Do you know if this hydraulic throttle assembly could be adapted to a pedal cluster such as the original GT40 system, or does it have to be used with the pedal and mount that come with it...I have not seen one of these units and I can't tell from the catalog illustration.

Alain V · Jan 4, 2003

Jim,
I think you can buy the hydraulic system without the pedal.
I could not find the part number, but did find the contact info for the manufacturer of this system.

CNC Inc.
1221 West Morena Blvd
San Diego CA. 92110
Phone : 619-257-1663
Fax : 619-275-0729

I could not find a dedicated website for them, but they do have a catalog available.

I hope this helps.

jimbo · Jan 5, 2003

Alain, thanks so much. I will phone them up tomorrow. This would beat a cable-operated linkage I think by a long shot. And all the other control pedal linkages in a GT40 are hydraulic as well...thanks again.
When I have some information to post on this application I will do so.

Eric · Jan 6, 2003

I was wondering if those of you who have seen this setup think that it would be possible to cut the line then use compression fittings to adapt it to use on a hard line or at the very least to be able to vary the length.

Bob Putnam · Jan 6, 2003

Eric,

It uses standard 5/16" OD tubing with compression fittings so I don't think it would be hard to add an intermediate hard line. My biggest concern is the difficulty of bleeding.

I'm thinking about adding standard brake bleeders in strategic places.

FredGT40 · May 30, 2003

Alain,

I got my pedal assembly from the US and will assemble it soon.
I have put the line and is just ok between foot and trottl(rather just short..).I am awaiting my new carb to assemble it.
Let you know experience but I am all excited. /ubbthreads/images/graemlins/tongue.gif
Fred

hydraulic throttle pedal assemmbly

Alain Vanhollebeke

Bob Putnam

Alain Vanhollebeke

Bo Eliasson

Bob Putnam

Fred/Belgium

Alain Vanhollebeke

Fred/Belgium

Alain Vanhollebeke

Jim Rosenthal

Alain Vanhollebeke

Jim Rosenthal

Bob Putnam

Fred/Belgium

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