Roy Cruse

Spoon…..

The A extrusions are 745mm…

If you subtract the 2 x 80mm end spaces and the 4 x 40mm C extrusions your left with 425mm to split between 3 gaps this is 141.67 mm per gap

Not sure where your getting 90mm gaps from ?

Not

Definitely easier like this https://photos.app.goo.gl/kbvK63fX3PLrHr...

https://photos.app.goo.gl/v4qxfQNAckXePU...

I found it much easier to assemble all 4 solid wheel assemblies at once with the inner plate lying flat on its back holding the bolts in place. Otherwise its fiddly and hard to get the shim and 6mm spacer on the last one. Once all 4 are done place the outer plate on top and add the shims and nuts. Just make sure the eccentric nut has located properly before tightening