Gotcha. As a new Dimond owner I was concerned about not being able to do TTs as well. But after reviewing the USAC rules, I don't think it's going to be an issue for my local TTs. Now I haven't tested this at a local TT yet, but I'll have the rules handy when I do.
Quote:
1I. Bicycles 1I1. Bicycles used in competition must be propelled solely by the rider's legs and shall have the following characteristics:
(a) Dimensions. Bicycles may be no more than 2 meters long and 75 cm wide, except that tandems may be up to 3 meters long
(b) There may be no protective shield, fairing, or other device on any part of the bicycle, which has the effect of reducing air resistance except that spoke covers may be used.
(c) Wheels may be made with spokes or solid construction. No wheel may contain special mechanisms to store and release energy
(d) The handlebar ends shall be solidly plugged and attachments thereto shall be fashioned in such a way as to minimize danger without impairing steering. In road, track, or cyclo-cross races, handlebars with ends, features, or attachments that extend forward or upward or that provide support for other than the rider's hands are permitted only in 31 time trial and pursuit events (not in Team Sprint); however, attachments that point upward on the brakehoods of road bicycles are allowed if the distance between them is greater than 25 cm (9.8 inches).
(e) Bicycles must meet current UCI technical regulations at events that select 17-18, U23 and Elite riders for international competition or national teams. All bicycles used in National Championships (for UCI recognized classes listed above) and NRC races must comply with the current UCI regulations. At the discretion of USA Cycling, UCI rules may be adopted or modified for other National Championships. (f) Bicycles commonly known as recumbent may not be raced in USA Cycling races unless there is a separate race for this category of bicycle, and then may be used only in that category.
(g) A massed-start bicycle is a road or track bicycle that is legal in all events within the road or track discipline, rather than a bicycle that is restricted to particular events. Handlebars for massed-start bicycles may not have forearm supports nor handlebar extensions or attachments that point forward.
(h) Time trial events may restrict the competitors to massstart bicycles in one or more classes, provided that the restriction is stated in the race announcement and technical guide. This includes time trials in stage races.
(i) A Single Speed is any type of bicycle possessing only one rear cog and only one front chainring and with no means of altering the gear ratio in any way during the race.
1I2. Riders are responsible for their selection of competition equipment and for taking reasonable precautions to ensure that its condition is adequate and safe for use in competition.
(a) To maintain compliance with these regulations, the equipment and uniform of one or more riders may be examined at any time to discover the use of items which are not allowed or which are obviously improperly adjusted, insecurely fastened, or which may present a danger to the 32 rider(s). The Chief Referee shall prohibit the use of any such items discovered during the examination. Such examinations are conducted at the discretion of the Chief Referee. An examination of every rider's equipment is not required.
(b) USA Cycling and any Race Director or sponsor, and their respective agents, officials, employees and volunteers, shall not be liable for any damages or injuries arising from or connected in any way with the condition or adequacy of any rider's competition equipment or uniform, regardless of whether or not such competition equipment or uniform was examined or was not determined to be in violation of the rules.
