Thursday, May 28, 2015 at 09:10
Hi Alby
To the extent the problem manifests will be determined by many factors I suspect, vehicle loading, the actual condition of the surface being driven and speed figuring highly. Some of these factors can be controlled, others not as easily.
Loading is not too much of a problem as we are diligent in how we approach it and consider loading carefully. And whilst it appears we have a big canopy that can be filled, it is never filled “to the brim” but simply provides us with loading options and a lockable canopy for security.
But clearly, all dual cabs will suffer from the rearward effect of the load being carried given most have an over-hang of varying degrees.
MDT Engineering, the Tru-tracker people, actually has an engineered solution for the over-hang and is achieved by extending the chassis by either 200mm or 500mm. Mind you that can create its own problems, including vehicle length and a turning circle like the cruise ship the “Queen Mary”.
But it is worth noting, that modification is more designed to improve handling of the vehicle, the chassis in its original unmodified form is designed and quite capable of taking loaded weights to the rear axle maximum. Mind you, the driven speed for any vehicle should be adjusted to account for the load being carried. Heavier should equate to lower...at least that is what we practice!
To your question on GVM, essentially whenever an engineer looks at your vehicle they have a responsibility that it is presented in a roadworthy condition and meets any State registration requirements at that point of time.
The original certifier does not need to view the Tru-tracker modification, but the engineer’s sign-off for the modification meant they needed to ensure the vehicle as a whole is roadworthy, including the impact of the current modification on previous modifications.
To this point, the GVM upgrade and weight of “The Landy” meant that it was required to have Cat 6 lighting, which in practical terms meant a larger indicator on the front panel. This was not done due to an oversight at the time of the GVM upgrade and I was required to comply prior to certification of the Tru-tracker modification.
As I discussed in an earlier blog, the Lovell GVM upgrade is to a weight of 3,900kg, which is above the combined axle weight for the VDJ79 Dual Cab. The Tru-tacker modification is approved to 3,780kg which is the total of the combined axle weight as it rolls out of the Toyota factory.
To get around this issue I had the GVM amended from 3,900kg to 3,780kg to comply. Noting, I was able to retain an increase in the front axle weight from the original 1,480kg to 1,540kg, but overall GVM still limited to 3,780kg.
This is not an issue for me as the additional GVM capacity I had above 3,780kg was only available on the front axle due to the limitation of the rear axle load limit.
It is worth highlighting that only the Lovell’s GVM upgrade for this vehicle is permitted to 3,900kg and many, including them (apparently), are puzzled how it was ever approved by DOTAR – many believe it was in error.
Cheers, Baz – The Landy
FollowupID:
840371