Kyosho Ultima Pro XL Chassis

thingiverse

Chassis model for the Kyosho Ultima Pro XL. This model was based on a pretty badly damaged Pro XL chassis that I purchased. The previous owner had drilled several additional holes in the rear to attach, I assume, different transmissions. This left the rear mounting holes a bit of a mess so this design is based on a combination of known components/spacing. I can update if this does not seem correct but thought I would provide this to anyone who needs it. I have also included the Pro XL front upper brace. This could be a bit tricky to make yourself if trying to make this out of fiberglass/carbon fiber. However, it probably would not be that difficult to make out of aluminum. If aluminum is chosen, I would recommend an upper deck spanning from the rear bulkhead to the front bulkhead to prevent bending (similar to the original Ultima Pro but would need to be longer). An Ultima II upper deck may work. Alternatively, you could probably design and print off mudguards that could probably provide the required stiffness. NOTE: These are all model/measurement based - so I have not yet made this myself to completely confirm dimensions. UPDATE 01/23/22: Updated the design very slightly at the front servo mount. After printing out a variant of the servo plate, I confirmed that it should be positioned out by 0.5 mm from the earlier version. I have left the original in the posting, but will eventually remove it.