The parts came in today!

The hubs, wheels, brake rotors, and rear axles for the Mini Sprint-T came in the mail today! Yay!

Everything is going to require some kind of modification from the delivered state except the brake rotors for the front wheels, they are within a couple thousandths of an inch of being the right size and only the rears will require any change in diameter since they are about a half-inch smaller in 1/1 scale and that would be noticeable in 1/25 scale.

The wheels measured out as 10″ wide bead-to-bead in scale, with the street tire wheel needing to be 8″ and the race tire wheel needing to be 14″, some work needs to be done on all of them. The back half of the wheel measures out about 2″ too wide for the street version, so narrowing that to the right width will get most of the adjustment for the street tire. The back half measured too narrow for the race wheel by a couple hundredths of an inch and the front half was over 0.1″ too narrow for the race tires. Both of those will require some finicky work to get the right width.

One thing that will require work is getting the rotors the right distance away from the back side of the hubs. As delivered the rotors mount to the rear face of the hub with no clearance, but 1/1 the rotors are spaced away from the hubs in different widths depending on the brake calipers being used. The solution for that is very easy. The rear axle tube is just the right size material for this and the tube will have to be trimmed a large amount to get the width right in the back. So the hubs and rotors will be glued to the rear axle after trimming for the right width and brake rotor offset, then the leftover bits of the rear axle tube will be used to build the front spindles to the right size and brake rotor offset. The tires won’t roll, but that is a small price to pay to get the offset right. That does leave me with two metal axles that run inside the rear axle for the tires to roll that are redundant. The front wheels won’t turn left and right either as my tools won’t let me work that small.

Naturally all of these modifications will work much easier with a lathe for making square cuts in round parts. Hint, hint.

I’ll have pictures ready for tomorrow’s post, I promise.

Billed @€0.02, Opus the Poet

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