- 47
- Doncaster UK
like i said nixim buffer is not long enough for me, If it was long enough pedal would cut through it.
You being someone who was involed with the development of nixim buffer could you
tell me what it's made up of?
Well of course if it was long enough the internal spring guides would cut it, thats exactly what happened with the first NIXIM mod.
So in the second version we uprated the actual spring and made it into a two stage spring and reduced the rubber buffer from 35 to 25mm in length. As previously mentioned this means the spring itself is giving some of the feel we want, with the final rapid stiffness being given by the rubber buffer.
Overall with the NIXIM 2, the pedal at its fullest travel requires a little more pressure than the GTEYE, if this is felt to be too strong then the buffer can be trimmed to reduce the foot pressure rquired.
If you do not use the buffer then the foot pressure required at full stroke is about 25% less with the NIXIM 2 mod compared to GTEYE, - which sort of makes a mockery of his comments.
Also the first stage of the NIXIM 2 is 25% lower than the GTEYE first stage. This is important because the initial pressure in all real brake pedals starts from virtually zero because at first you are only pressing a spring which returns a real brake pedal to its rest position. Then as the gap from the brake disc to the brake pads closes that it when you feel the pedal start to really stiffen.
Any further movement in the pedal requires rapidly increasing foot pressure which is taken care of by the second stage of the NIXIM spring - finally backed up by the buffer. Presumably this is exactly why you feel the need to use a rubber buffer type modification yourself - in effect mimicking the NIXIM mod, yeah?
GT EYE have tried to accomplish this without the buffer but the effect is impossible to achieve with just a simple spring alone no matter how many stages it has, we know - we have tried many various systems for many years, this for our own product development not for the Logi G27 mod alone.
The wider the difference in foot pressure from the start of pedal movement to its fullest travel - the more the driver has to work with in terms of feel, which in turn makes it easier to find the point of threshold braking.
The stiffer the pedal is to begin with and softer it is at its fullest travel means that the driver has less to work with in terms of feel or feedback, this is the problem with the stock spring.
Of course the GTeye spring is better than stock in the same way that the NIXIM 2 without the buffer is better than stock, but with the buffer the NIXIM 2 is much better because of the bigger change in spring rate. Otherwise why would we go to the extent of buying a sheet of rubber costing hundreds of pounds to spend time and effort making those little rubber buffers.
It may only be a little peice of rubber to you, but to us it is a considerable investment - but it gives the pedal the feel we think it needs to help with high performance driving.
Obviously you feel the same because you have found your own piece of rubber to put in the GTEYE spring. Agreed?
You may not appreciate it, but the NIXIM 2 mod is better because the initial spring rate is much lower than the GTEYE mod so you have less to work with in terms of feel, though as I said still much better than the stock setup.
Dave
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