rcx132
Philip
- Messages
- 2,848
- Location
- London, UK
Do any of our members know the MSA or Ultra4 regs and would double check my understanding?
I've designed a rock crawler type buggy and I'd like it to be compliant for trials, comp Safari or Ultra4. I read through all the MSA rules when I first designed the project years ago, but career change, having kids etc put everything on hold for several years before I started the build earlier this year.
I've had the main tubes CNC bent and are now tacked in place. I'm starting on the secondary tubes such as the diagonals.
For starters I can't make any sense of the last half sentence of rule 1.3.4 at all, the underlined bit:
1.3.4. Diagonal Members. At least one diagonal member must be fitted. Their location must be in accordance with drawings K5 or K6 and they must be straight. The combination of several
diagonal members is permitted. Where two diagonals in the form of a cross are used, at least one of the diagonals must be a single piece tube. The attachment points of the diagonal members must be so located that they cannot cause injuries. They may be made removable but must be in place during events. The lower end of the diagonal must join the main rollbar or back-stay not further than 100mm from the mounting foot. The upper end must join the main rollbar not further than 100mm from the junction of the backstay joint, or the backstay not more than 100mm from its junction with the main rollbar.
I've designed a rock crawler type buggy and I'd like it to be compliant for trials, comp Safari or Ultra4. I read through all the MSA rules when I first designed the project years ago, but career change, having kids etc put everything on hold for several years before I started the build earlier this year.
I've had the main tubes CNC bent and are now tacked in place. I'm starting on the secondary tubes such as the diagonals.
For starters I can't make any sense of the last half sentence of rule 1.3.4 at all, the underlined bit:
1.3.4. Diagonal Members. At least one diagonal member must be fitted. Their location must be in accordance with drawings K5 or K6 and they must be straight. The combination of several
diagonal members is permitted. Where two diagonals in the form of a cross are used, at least one of the diagonals must be a single piece tube. The attachment points of the diagonal members must be so located that they cannot cause injuries. They may be made removable but must be in place during events. The lower end of the diagonal must join the main rollbar or back-stay not further than 100mm from the mounting foot. The upper end must join the main rollbar not further than 100mm from the junction of the backstay joint, or the backstay not more than 100mm from its junction with the main rollbar.
Last edited: