Information translated from a message posted by SFRO (Gjutna spindlar/uprights i GOX GT40) in Swedish.
Announcement by The Swedish national organization for amateur built vehicles, SFRO – February 23, 2010
Information on defects in cast aluminum uprights delivered by GOX Teknik
This letter regards serious doubts in the construction and performance of cast aluminum uprights marketed by GOX to GT40s. The details examined by SFRO in regards to SFRO inspections shows serious problems.
The details show signs of deficits in the casting process. There are pores, sinkings and other defects that affect the strength.
On top of these problems, it is also unclear what material that has actually been used in the casting process. Two independent analysis show that the hardness is significantly lower than what is accepted by those who makes serial production of similar details.
The geometry also shows deficits for being on a modern sports car, where fore mostly the scrubs radius is too large.
SFRO performs inspections of amateur-built vehicles and can therefore not approve nor disapprove single components. It is up to the individual builder to prove that the components fulfill requirements. Still, it may happen that SFRO take a common view on single components.
In terms of cast uprights (from GOX) the decision until otherwise changed is that they shall not be approved in an inspection by SFRO.
The supplier (GOX Teknik AB, GOX Teknik - Sveriges just nu hetaste bilbyggare) was informed on these deficits in December 2009 and was given the possibility to inform its current and potential clients about these problems, through the GOX webpage. No such information has been disclosed (by GOX) as at February 2010. Therefore SFRO is publicizing this information through the SFRO webpage at www.sfro.com.
Clients that have acquired this type of cast uprights should contact the supplier (GOX) to return the components.
SFRO Board and Technical Committee
SFRO (Sveriges fordonsbyggares riksorganisation) is a Swedish national organization founded in 1982 with the goal of making it possible to register amateur built vehicles. The goal of SFRO is to help builders to build their own vehicles and register them for road use. The types of vehicles SFRO handles are rebuilt vehicles (like hot rods, low riders and so on) and amateur built vehicles (specials or kit cars). SFRO can also inspect imported vehicles that it otherwise wouldn't be possible to import. They are then regarded as rebuilt vehicles. Source: Wikipedia
Announcement by The Swedish national organization for amateur built vehicles, SFRO – February 23, 2010
Information on defects in cast aluminum uprights delivered by GOX Teknik
This letter regards serious doubts in the construction and performance of cast aluminum uprights marketed by GOX to GT40s. The details examined by SFRO in regards to SFRO inspections shows serious problems.
The details show signs of deficits in the casting process. There are pores, sinkings and other defects that affect the strength.
On top of these problems, it is also unclear what material that has actually been used in the casting process. Two independent analysis show that the hardness is significantly lower than what is accepted by those who makes serial production of similar details.
The geometry also shows deficits for being on a modern sports car, where fore mostly the scrubs radius is too large.
SFRO performs inspections of amateur-built vehicles and can therefore not approve nor disapprove single components. It is up to the individual builder to prove that the components fulfill requirements. Still, it may happen that SFRO take a common view on single components.
In terms of cast uprights (from GOX) the decision until otherwise changed is that they shall not be approved in an inspection by SFRO.
The supplier (GOX Teknik AB, GOX Teknik - Sveriges just nu hetaste bilbyggare) was informed on these deficits in December 2009 and was given the possibility to inform its current and potential clients about these problems, through the GOX webpage. No such information has been disclosed (by GOX) as at February 2010. Therefore SFRO is publicizing this information through the SFRO webpage at www.sfro.com.
Clients that have acquired this type of cast uprights should contact the supplier (GOX) to return the components.
SFRO Board and Technical Committee
SFRO (Sveriges fordonsbyggares riksorganisation) is a Swedish national organization founded in 1982 with the goal of making it possible to register amateur built vehicles. The goal of SFRO is to help builders to build their own vehicles and register them for road use. The types of vehicles SFRO handles are rebuilt vehicles (like hot rods, low riders and so on) and amateur built vehicles (specials or kit cars). SFRO can also inspect imported vehicles that it otherwise wouldn't be possible to import. They are then regarded as rebuilt vehicles. Source: Wikipedia