MoTeC Global Forum

I'm currently updating my paddle shift system.
Previously had a M800 & Geartronics GCU & Motec Air Tank Kit now updating to M150 GPRP.

The Geartronics GCU kit supplied a pressure regulator to fit to the Tank. Do i really need this? I notice there's no regulator on the Motec Kit.

Also is there any benefit to increasing the size of the air tank? or not necessary?

Thanks

My experience is that a consistent pressure to the solenoid will make shifting more predictable and tunable. You just need to make sure that your pressure sensor is on the tank so you can keep adequate pressure to the regulator.

Ok, Thanks, so better to have the regulator than not. I think it set at 8bar.

Yes, I have the pressure sensor on the tank.

Any benefit to having a larger Air tank?

Thanks

A larger tank will give the compressor more time to cool down between activations.

A larger tank will give the compressor more time to cool down between activations.

The Pump that is supplied in the kit is rated for 100% duty cycle operation, this is one of the reasons for using that pump, it has also been tested in a 12 hour endurance race where a hose fitting leaked at the start of the race and it was in a location that it couldn't be resolved in a pit stop, so the pump ran non stop for most of the race (38°C temps that day as well) without issues. There is a bleed off valve supplied in the kit that activates ~140psi.

What I see with a number of Paddle shift installations is that the Pump threshold and Hysteresis values are not set correctly, so that the pressure in the system fluctuates too much for a consistent shift. I have seen one that had a 100psi variance between the high and low pressures in the system, it didn't shift well down low.