v8burbling
Member
- Messages
- 89
- Location
- UK
Hi All,
Repairing the front face of the chassis rear cross member on my Range Rover. Chassis repaired now need to fabricate the chassis hanger that supported the rear of the fuel tank. It's a triangular x-section box-type section that runs across the car.
The old hanger had 3 x M8 x 25mm captured bolts (fully threaded - set screws) pointing downwards that supported the tank rear flange. I was going to use A2 stainless set screws and weld the head into the inside of the section but understand that they are not as strong as high tensile.
Not sure if the old ones were high tensile or not they are so rusted.
The tank could be around 75 litres, so assuming that could weigh around 100kg (tank + fuel + safety margin), do I need high tensile bolts ? There are 2 at the front flange and 3 at the rear so 5 bolts holding the weight altogether but note that this is an off-road vehicle so they wil get loaded more than a normal car (I've had the front axle off the floor before now).
Could use regular steel high tensile but once welded in, the bolts will only be changeable by cutting into the box section so stainless would be better if they can take the weight.
Anyone know how to do the calculations ?
Repairing the front face of the chassis rear cross member on my Range Rover. Chassis repaired now need to fabricate the chassis hanger that supported the rear of the fuel tank. It's a triangular x-section box-type section that runs across the car.
The old hanger had 3 x M8 x 25mm captured bolts (fully threaded - set screws) pointing downwards that supported the tank rear flange. I was going to use A2 stainless set screws and weld the head into the inside of the section but understand that they are not as strong as high tensile.
Not sure if the old ones were high tensile or not they are so rusted.
The tank could be around 75 litres, so assuming that could weigh around 100kg (tank + fuel + safety margin), do I need high tensile bolts ? There are 2 at the front flange and 3 at the rear so 5 bolts holding the weight altogether but note that this is an off-road vehicle so they wil get loaded more than a normal car (I've had the front axle off the floor before now).
Could use regular steel high tensile but once welded in, the bolts will only be changeable by cutting into the box section so stainless would be better if they can take the weight.
Anyone know how to do the calculations ?