• A product called "J-Disc" used to be on the market in the late 80's, and it was a production disc wheel with a plastic/kevlar cover. For whatever reason, they discontinued production, but you can still find the occasional 7 speed tubular J-Disc on ebay for $400 or $500.
• Also, a company called excel sports makes 'CH wheel covers' but they weigh around a pound. Wheelbuilders.com also makes a bolt on wheel cover, around the same weight.

• IMPORTANT : These covers are not meant to stand up to torsional abuse. That being said, under normal use (no poking holes with a screwdriver) the disc wheel will stand up to the elements for quite some time. Be careful with your wheel, if subject to normal use without puncturing or undue lateral pressure, it should last you a long time. We suggest that you have an extra wheel for training as to not compromise the integrity of your FlyWheel. Unfortunately, we can't guarantee our covers, because it's impossible to tell if the cover was damaged from neglect or normal wear and tear. However, we offer a 55% price discount for customers purchasing a re-covered wheel.

• Yes

• Wheels built with our covers make more of a "whoosh whoosh noise", distinctive and similar to the 'wump wump'.

What types of wheels do you cover?

• Any kind of wheel with 1CM + (apprx) of rim below the braking surface.

What about custom designs?

• Our wheels ship with contrasting black/white background and "FLY" emblazoned across the wheel. For a small fee you can emboss your own custom text. We do not offer custom graphics, but almost any color is possible, including chrome, neons, flat blacks, and transparent (not recommended (they're ugly). It is possible to spray paint / stencil designs or vinyl decals after market, however.

• Submit further questions to sales@ttflywheels.com and they might make this list!