What you need to do now:
1. compile a report of your own. Write down everything you recall from that event to include:
a. date and time and location of accident
b. road conditions
c. traffic conditions
d. weather conditions
e. direction of travel
f. estimated (your guess) speed
g. what precipitated the accident
h. what occurred during the accident
i. events after the accident
J. any and all witnesses (names, phone numbers, addresses)
K. condition (mechanically) of motorcycle prior to accident
In addition to your notes, contact any witnesses and secure reports from responding agencies (fire, police, EMS, 911, etc.)
Who called in the accident? What information was given to dispatch? Immediately request a copy of the accident report.
You are entitled to "Discovery" (court rule: defendant is entitled to all notes, recordings, photos, witness list, gist of any testimony from witnesses, etc.), make sure you request this (must be done prior to {usually 10 - 30 days min.} court date). The officer is compelled to supply you any and all reports he produced regarding the event.
Often, part of the element of any MV related charge is that it has to occur on a "public way". If this is the case, file a request with the court (again, well in advance of the hearing date), that the county has to prove "public way". This typically involves calling in a state engineer, having to supply and submit to the court certified blueprints of the roadway, etc. It is often such a hassle that the prosecution hopes you forgot your request and never subpoenas the state engineer. If that is the situation, the court will dismiss the case.
Just have all the information you can possible gather with you. Review it, look for flaws in the submitted reports, ask for clarification on how measurements were made, speed was calculated, etc. Ask for proof of certification regarding investigation, report writing etc.
If properly prepared chances are you have a good shot of exoneration if it goes to a hearing. Prior to that though, request a pre-trial conference with the county attorney (or whomever prosecutes for the agency). Explain how the incident happened, give a brief synopsis on what you plan to present as evidence and how you feel you will prevail. Be polite and professional. Don't belittle the agency or officer or imply that "I won't file a police complaint if it is dropped" attitude. Just point out that you have better knowledge of what happened, you have witnesses that can attest to it, that the officer has flaws in his investigation and chances are the prosecutor will probably pick up on the same things.
Prosecutors would rather invest their time in preparing to try more complex cases (burglary, assault, etc.) instead of being burdened with a motor vehicle violation. You may also discover that the officer in question has already developed a reputation for cheap pinches and prosecutors do not like bringing those in front of the judge.
Prosecutors want solid winnable cases. Most of them want to further their careers, so minor violations, especially if they are based on minimal evidence or appear to be questionable anyways, can often be dismissed or negotiated without having to go to trial.