YZ-2 with B-Max rear end.

[J'MM'N]

Converted my YZ-2 to the B-Max2 gearbox using parts obtained from Fibrelyte. Although this set up is for low grip situations, people may find it useful over the Winter months and where tracks have variable grip levels around the circuit. Swapping from one gearbox to the other trackside, takes less than 10 mins.

Consists of:
Battery Brace 2.4mm
Rear shock tower 4mm
Shock tower spacer 3mm

Work involved:
Drilling two countersunk holes in chassis where waterfall fits. This was done using old B-Max2 chassis as a template.

Fitting a 2mm spacer between waterfall and chassis, this could also be done using washers. Some people may wish to go 3mm if your lipos are a little fatter.

Fitting a 2mm spacer between rear camber support and gearbox lug.

The B-Max2 forward/rear hinge pin support fits straight on. I opted to use the one from the YZ-2. Which will need a small amount of filing, to get the full motor travel on motor plate.

A small area needs to be removed from the plastic chassis sideframes, for battery placement.

The wing mounts need 2mm removed to correct the angle of wing. If using B-Max2 plastic shock tower, this process doesn't require doing.

On the bottom corners of the carbon shock tower, a small angle will need to be filed to clear gearbox casing. This is something Fibrelyte couldn't do themselves, but is an easy operation with just a few small strokes of a file.

You could opt for the plastic shock tower from the B-Max2, but the carbon tower gives an extra shock mounting hole. Holes 1, 2 & 3 are the same as the YZ-2 and holes 3 & 4 are the same as the two inner holes on the B-Max2.