New Twin Plate Clutch, Very Bad In Rush Hour Traffic

[VSPEC-33]

I thought the nismo clutch was supposed to give you 'stock feel' and be very 'driveable'. I was hoping to get away from the on/off style of the old clutch. I guess i'll find out in a few weeks.....

if the larger nismo slave decreases pedal effort, it should also slightly increase the amount of pedal travel from disengaged to engaged?

[nsta]

hey vspec, the pedal feel is very light (i have a larger slave and nismo twin), but yeah the clutch is quite an on/off sort of one, me, and all my mates stalled it a few times, but im getting used to it, there is a bit of slack there, but not much, you need to give it a few good revs to get it to go, nothing big though, im used to it now.

P.s: yes i also though when people said that the clutch feels like stock, that they meant in pedal feel,and in progression between engaged/disengaged, the later is not true:)

[Beer Baron]

I thought the nismo clutch was supposed to give you 'stock feel' and be very 'driveable'. I was hoping to get away from the on/off style of the old clutch. I guess i'll find out in a few weeks.....

if the larger nismo slave decreases pedal effort, it should also slightly increase the amount of pedal travel from disengaged to engaged?

no it's the opposite. decrease in effort means decrease in travel too. basically it's a larger bore slave so for a given pedal movement it travels less distance now (but with less effort) that is the reason I went back to a stock slave.

[nsta]

So with the larger slave, progression is lost, but pedal feel is heavier?, that makes sense,mmm.....maybe is should go back to stock slave and see how it feels....not too hard to do i guess???, willl need to bleed the clutch again though.

[VSPEC-33]

no it's the opposite. decrease in effort means decrease in travel too. basically it's a larger bore slave so for a given pedal movement it travels less distance now (but with less effort) that is the reason I went back to a stock slave.

Ok looks like i might leave the standard slave in as long as its not too heavy.

I was imagining it like changing the pivot point, giving it move leverage. Lighter feel and and more pedal movement reqd to do the same work(but with less effort)

Hydraulics i'll admit i dont know too much about....

[Cubes]

I think some of you have misunderstood.

no it's the opposite. decrease in effort means decrease in travel too. basically it's a larger bore slave so for a given pedal movement it travels less distance now (but with less effort) that is the reason I went back to a stock slave.

The way I understood what Beer Baron said was:

With the larger slave cylinder you decrease clutch movement for a given pedal movement which results in a lighter pedal (due to increased leverage) but also less clutch travel.

Reduce clutch travel and the take up point will be super close to the max pedal movement (i.e the floor); which can be a bad thing depending how close the take up point is to the floor as it can increase the frequency of missed gears or crunching when shifting fast.

[wrxhoon]

no it's the opposite. decrease in effort means decrease in travel too. basically it's a larger bore slave so for a given pedal movement it travels less distance now (but with less effort) that is the reason I went back to a stock slave.

You could have ajusted your rod so you get more travel, if you was running out of pedal travel .

The bigger slave is much better , less effort and more progresive.

Nismo twins are about the best you will find as far as driveability goes .

Don't forget you will never have the same feel as a normal stock clutch , what you hvae is heaps more grip and lighter pedal in twin plates ( if you compare same clamping single and twin the twin will be lighter). The other reason you stall your twin is the much lighter flywheel, you have better response but you loose out on the torque of the much heavier stock flywheel. You can't have it both ways but a twin will take a lot more punishment and it will last as long as you DONT ride it , ride a twin and you will wear it out very quick, especially when you ride it between gears ..

[Beer Baron]

yeah what cubes says is correct. nismo slave gives lighter pedal, but less travel for a given pedal movement. stock slave is heavier pedal but more travel for a given pedal movement.

wrxhoon, I did adjust the rod at the pedal, and maybe my nismo slave was a bit worn (it was on the car when I got it). it wasn't leaking though. anyway the pedal effort is not too bad with stock slave (that's with both my OS twin, and my OS tripple). as you pointed out to get a heavy duty single to grip they need massive pressure plates, you can have a twin hold the same power with a ligther cover pressure so to me the pedal is not too bad at all even with stock slave.

[VSPEC-33]

no it's the opposite. decrease in effort means decrease in travel too

The bigger slave is much better , less effort and more progresive.

OK now i'm confused

more progressive means less on/off switch style performance right, thats what i'm after....

Heres a pic that help explains what i'm trying to figure out:

[Ronin 09]

"you need to drive it hard when you see it play up"??

I don't even know what this means...

You will need at least 1000k's to break it in....

Then you will need to drive hard every time you see it playing up.

[phunky_monkey]

Referring to uneven clutch plate wear perhaps?

I never experience it with my twin plate in the 180, but when the clubbie starts squealing it's button I just slip it from a 3rd gear launch to even it out again. It works a treat.

[TokyoTaxi]

Don't know if it helps any but I've driven R32's with the following clutches: OS Giken TS2CD, R3C, STR2CD, TR2B-C ( Carbon Twin Plate ) and NISMO Coppermix and all were very grabby when they get warm ( STR2CD being the best of that bunch and R3C being the worst ).

You just have to get used to it

[Topaz]

First few days I had my Nismo twin I thought it was horrible, I wanted my old standard and very worn clutch back . Its still not broken in yet and is still quite annoying and embarrassing doing the hops away from lights but I am getting used to it. I get heaps more bumps and knocks coming from all over the car, probably the diffs clunking and engine mounts straining....

Can't wait to give this thing a 7k launch at the drags

[nsta]

hahaha, i know what you mean, its so hard to get used to,im slowly getting used to it though:). Hill starts are the worst for me, i cant count the no. of times i have stalled on a semi steep hill, its embarassing yeah, but those guys have no clue what i have to drive hahahaa

[SimonR32]

ive driven with twins, singles, super singles and use a triple in the gtr

they are all different and nothing is too hard to live with, you just have to deal with it...

saying that the triple is actually the best clutch i have used, twins tend to be very bitey

the worst clutch i ever used was a 3 puck solid centre single. was very light but was litterally a clutch dump at 3500rpm or stall

[stolen_s15]

My 33 had an exedy twin plate in when i collected it, and the drive home was hell! Looked like such a d!(k over revving and stalling this line all over the place. But now i'm use to it and its great! Just need to use handbrake starts on any hills.

But after driving a mates 34 with stock clutch I would never go back, when you can use a tuff clutch it makes driving that much better.

[nsta]

yeah i look like a tool when i drive my clutch sometimes. get laughed at and everything, little do some of these ppl know how hard it can be at times....i love my clutch though

[bezender]

lol yeah, i have an orc twin plate in my 32. took me a little while to get used to it, peak hour, and hill starts ftl... that being said i would not have it any other way...

"i call the big one bitey"

[Beer Baron]

I think you guys need some serious driving practice. I haven't driven a clutch yet I couldn't get the hang of within half an hour.

I my own cars I've had standard, nismo single, heaving duty exedy single, OS twin (solid centre) OS tripple (solid centre) and quickly adapted to all of them. I've also driven tilton twin, carbon single, and various twins, singles and tripples.

with my OS tripple I never stall it, can do hill starts no problem. even with a small 'take up zone' all you need is a small amount of clutch control to drive it easily. so practice up.

[Bunta]

A friend of mine with a Nismo twin plate of some kind says all Skyline drivers should stall at least once every time they drive the car.

ha ha! I like that

I always stall my TS2BD when I am tired and not concerntrating, but apart from that it is fine, and Im with Barron, the stock slave make the clutch easier to use IMO