Wheel Riser for Bike Trainer

This is a front wheel riser for use with a bike trainer. One slot will accommodate up to a 25 mm road tire, and the other slot will accommodate up to a 2.2 in mountain bike tire. It raises the wheel about 70 mm or 2.75 inches (because that's the thickness of the book my road bike tire is sitting on).

I printed the pictured riser with a .8 mm nozzle at .32 resolution. Without supports, the legs are prone to tip during the print process.

As you can see in the pictures, I had some flow problems early on because I forgot to adjust for winter weather.

I left the tree supports in and have been steadily using this riser for about a year.