dom14
28th September 2015, 07:41 AM
Hey guys,
This is how I managed to repair the thermostatic auto choke of the RB30 Patrol Nikki carby.
It's a fairly easy and quick fix, but can be improved.
I did it in a hurry, but pretty sure this works well.
Basically, this was a bad design. Simply the factory way of attaching the heater element disk
onto the bi-metal spring assembly is not that good. It's a some kinda metallic conductive glue or a brazing method, but comes off over time due to heat and vibration. Once it falls off from it's location, it simply rattles inside and doesn't do anything. So, if you hear the plastic auto choke unit has a rattle when you remove and give it a shake, it's 100% sure that it is not working. I suspect it is the case for many RB30 Patrols auto chokes out there, and they are running rich and the fuel economy is suffering as a result of that. So, I reckon this post is useful to many RB30 Patrol Nikki carby model fans out there.
If anybody has any ideas of how to improve the way the heater element disk attaches to the bi-metal spring, do post some ideas, please.
Special thanks to Rodney(Yendor) for donating his valuable time with advice & tips during my effort to understand the mechanics+electrics behind the auto choke system in RB30 Patrol. Without his help, I would still be scratching my head.
This is how I managed to repair the thermostatic auto choke of the RB30 Patrol Nikki carby.
It's a fairly easy and quick fix, but can be improved.
I did it in a hurry, but pretty sure this works well.
Basically, this was a bad design. Simply the factory way of attaching the heater element disk
onto the bi-metal spring assembly is not that good. It's a some kinda metallic conductive glue or a brazing method, but comes off over time due to heat and vibration. Once it falls off from it's location, it simply rattles inside and doesn't do anything. So, if you hear the plastic auto choke unit has a rattle when you remove and give it a shake, it's 100% sure that it is not working. I suspect it is the case for many RB30 Patrols auto chokes out there, and they are running rich and the fuel economy is suffering as a result of that. So, I reckon this post is useful to many RB30 Patrol Nikki carby model fans out there.
If anybody has any ideas of how to improve the way the heater element disk attaches to the bi-metal spring, do post some ideas, please.
Special thanks to Rodney(Yendor) for donating his valuable time with advice & tips during my effort to understand the mechanics+electrics behind the auto choke system in RB30 Patrol. Without his help, I would still be scratching my head.