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Attessa Manual Locking

exXU1
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exXU1 Mentor

exXU1

Posted
Posted

Gents ,

can any one shed a little light on the most effective way of manually pumping up the clutch pack from in the cab and can one mount a guage to decipher as to how much lock up ones applying - eg 10% through to full.

I don't really need as a street car but more for drag situation.

We have been working on the electrical side of things and have hit a wall - so for now i would like to look at this option,

Another approach may be finding a way of manually stimulating the hydraulic pump via electrical switching .

Any thoughts or experience here.

I have started another thread in regard to simply attempting to trigger the Attessa to work with no ABS in place and have all but given up , we are so near as well.

Oh well lets have a look at this in the interim.

All input taken seriuosly and appreciated. :P

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https://www.sau.com.au/forums/topic/167186-attessa-manual-locking/
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Gav Mentor

Gav

Posted
Posted
Gents ,

can any one shed a little light on the most effective way of manually pumping up the clutch pack from in the cab and can one mount a guage to decipher as to how much lock up ones applying - eg 10% through to full.

I don't really need as a street car but more for drag situation.

We have been working on the electrical side of things and have hit a wall - so for now i would like to look at this option,

Another approach may be finding a way of manually stimulating the hydraulic pump via electrical switching .

Any thoughts or experience here.

I have started another thread in regard to simply attempting to trigger the Attessa to work with no ABS in place and have all but given up , we are so near as well.

Oh well lets have a look at this in the interim.

All input taken seriuosly and appreciated. :wave:

Ahhh....

I've just moved back to Oz and realised I've left a lot of GT-R info on my old computer overseas - including an article on how to set up a manual hydraulic transfer case lock-up!

I'll see if I can get the article back from old contacts, but from memory it is common in Japanese drag racing circles to use a manual hydraulic lever to pump up pressure in the ATESSA system to lock up the clutch packs. The pressure is held until you manually release the pressure via a solenoid controlled by a remote (and conveniently mounted) button which then converts back to rear wheel drive. An intermediate bleed valve can be inserted and adjusted so that the pressure is released slowly, thereby progressively releasing drive from the front axles. As it's an electronic solenoid releasing the pressure, there is no reason why this couldn't be activated automatically based on a signal from the vehicle speed.

Give me a day and I'll see what I can retrieve back.

exXU1 Mentor

exXU1

Posted
  • Author
Posted
Ahhh....

I've just moved back to Oz and realised I've left a lot of GT-R info on my old computer overseas - including an article on how to set up a manual hydraulic transfer case lock-up!

I'll see if I can get the article back from old contacts, but from memory it is common in Japanese drag racing circles to use a manual hydraulic lever to pump up pressure in the ATESSA system to lock up the clutch packs. The pressure is held until you manually release the pressure via a solenoid controlled by a remote (and conveniently mounted) button which then converts back to rear wheel drive. An intermediate bleed valve can be inserted and adjusted so that the pressure is released slowly, thereby progressively releasing drive from the front axles. As it's an electronic solenoid releasing the pressure, there is no reason why this couldn't be activated automatically based on a signal from the vehicle speed.

Give me a day and I'll see what I can retrieve back.

Hi Gav ,

hows things ? As you would appreciate this has to be done properly . i have heard of a few chaps doing it very primitively and running into a few problems.

What you have described sounds logical, retrieving the info would be much appreciated. I shall wait .

Thanks for your effort Gav.

Stronzo Collaborator

Stronzo

Posted
Posted

I had a problem installing powerfc to my enr33 -- the problem was locked e-ts clutch because of constant 4.5v at tps output pin @powerfc. So give e-ts control unit constant 4.5v at this pin and see if it helps.

exXU1 Mentor

exXU1

Posted
  • Author
Posted
I had a problem installing powerfc to my enr33 -- the problem was locked e-ts clutch because of constant 4.5v at tps output pin @powerfc. So give e-ts control unit constant 4.5v at this pin and see if it helps.

Hi stronzo,

there is a little more behind mine than that , do quick search - exXU1 - and attessa, you will see where it's all at .

Thanks for the in put though and i am glad you got yours sorted relatively easy.

  • 2 weeks later...
Swiper the Fox Grand Master

Swiper the Fox

Posted
Posted
What - nobody out there knows ?? Thats surprising! :O

What about running a variable voltage controller on the hydraulic pump...just a thought.

just buy a HKS ETC-EDA it l do exactly what you want.

or buy an Apex'i manual pump lever.

easy

Fitzpatrick Speed Works Mentor

Fitzpatrick Speed Works

Posted
Posted

apexi dont make those anymore, tried to order one last year no good. ADVAN in silverwater make one but it doesnt look as nice. I am making one on a wilwood brake pedal and floor mounting it, but I still dont know if it will work how I hope.

  • 1 month later...
exXU1 Mentor

exXU1

Posted
  • Author
Posted
apexi dont make those anymore, tried to order one last year no good. ADVAN in silverwater make one but it doesnt look as nice. I am making one on a wilwood brake pedal and floor mounting it, but I still dont know if it will work how I hope.

Hi Daniel ,

how are you?

Alls good so far with the project - your plate worked fine .

Who are these people who make this , and or have you got your attessa manually operated - if so what is the best way- remember i have no abs and we cant seem to get working correctly - so i we would like to do in another fashion, either set up another electronic way or manually with gauge , any suggestion or links please?

thanks.

GeeTR Grand Master

GeeTR

Posted
Posted

Don’t you guys feel like savages, operating the ATTESA in such a crude manor. Gone is the controlling of torque delivery to the front wheels in a nice progressive manor while exiting corners. Your using up all the spares, dragging em up strips :(

M

exXU1 Mentor

exXU1

Posted
  • Author
Posted
I have gone the HKS ETC+EDA route, but would be intersted in a manual controller.

Me too! I have had limited luck on attaining info in this area - i am interested in your set up Daniel - if it works of course, maybe if Next time and me order you to make one or get hold of some for us we could get at a reasonable cost. what's your thoughts?

Guys have a look at these, i think i am going to buy one - can't help my self ? http://www.ikeya-f.co.jp/en/car_type/bnr32.html

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