Geez, you guys are really making it difficult for yourselves...
The 300mm Guzzi discs are paired with the same P08 calipers as the Laverda, their relative positions are identical. Suitable Guzzi discs have the same offset as for the Laverda wheel (Cast wheel Guzzis have larger disc offset).
It is agreed that the caliper lugs are 108mm apart. Because the disc offset remains the same, the caliper lugs remain on the same plane as before. The lugs lie parallel to the fork stanchion centreline. Disc diametre is to be increased from 280 to 300mm which means the calipers need to be spaced 10mm further from the axle and rotated a bit.
All that is now required to know is the distance between the fork centreline and the lug axis as well as the distance from axle centre to bottom lug centre.
Position the lugs as a set 10mm outwards from the axle and rotate them around the axle and away from the fork leg until a substantial distance between what will end up as the bolt holes appears, maybe around 15-20°?
I'll now go rummage through my stash to find a 35mm fork leg for a P08 caliper and measure the required dimensions... fuckin' 22:40, I must be crazy.
OK, now 23:00, started Fusion, here's what I've come up with. This is the "rear" side, for LH slider with calipers mounted behind leg.

Steph, If you would like to supply your address via PM, I'd be happy to print it out in plastic and send it to you to check fit. Easy enough to fettle once one knows where one stands.
Feel free to correct me if I'm wrong!
piet
The 300mm Guzzi discs are paired with the same P08 calipers as the Laverda, their relative positions are identical. Suitable Guzzi discs have the same offset as for the Laverda wheel (Cast wheel Guzzis have larger disc offset).
It is agreed that the caliper lugs are 108mm apart. Because the disc offset remains the same, the caliper lugs remain on the same plane as before. The lugs lie parallel to the fork stanchion centreline. Disc diametre is to be increased from 280 to 300mm which means the calipers need to be spaced 10mm further from the axle and rotated a bit.
All that is now required to know is the distance between the fork centreline and the lug axis as well as the distance from axle centre to bottom lug centre.
Position the lugs as a set 10mm outwards from the axle and rotate them around the axle and away from the fork leg until a substantial distance between what will end up as the bolt holes appears, maybe around 15-20°?
I'll now go rummage through my stash to find a 35mm fork leg for a P08 caliper and measure the required dimensions... fuckin' 22:40, I must be crazy.
OK, now 23:00, started Fusion, here's what I've come up with. This is the "rear" side, for LH slider with calipers mounted behind leg.

Steph, If you would like to supply your address via PM, I'd be happy to print it out in plastic and send it to you to check fit. Easy enough to fettle once one knows where one stands.
Feel free to correct me if I'm wrong!
piet
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